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algorithms.c: Add bindings for STROBE.
[catacomb-python] / algorithms.c
CommitLineData
d7ab1bab 1/* -*-c-*-
d7ab1bab 2 *
3 * Symmetric cryptography
4 *
5 * (c) 2004 Straylight/Edgeware
6 */
7
b2687a0a 8/*----- Licensing notice --------------------------------------------------*
d7ab1bab 9 *
10 * This file is part of the Python interface to Catacomb.
11 *
12 * Catacomb/Python is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
b2687a0a 16 *
d7ab1bab 17 * Catacomb/Python is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
b2687a0a 21 *
d7ab1bab 22 * You should have received a copy of the GNU General Public License
23 * along with Catacomb/Python; if not, write to the Free Software Foundation,
24 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 */
26
27/*----- Header files ------------------------------------------------------*/
28
29#include "catacomb-python.h"
6640e060 30PUBLIC_SYMBOLS;
d7ab1bab 31#include "algorithms.h"
6640e060 32PRIVATE_SYMBOLS;
d7ab1bab 33
34/*----- Key sizes ---------------------------------------------------------*/
35
c6e89d48
MW		 36static PyTypeObject *keysz_pytype;
37static PyTypeObject *keyszany_pytype, *keyszrange_pytype, *keyszset_pytype;
38
39typedef struct keysz_pyobj {
40 PyObject_HEAD
41 int dfl;
42} keysz_pyobj;
43
44typedef struct keyszrange_pyobj {
45 PyObject_HEAD
46 int dfl;
47 int min, max, mod;
48} keyszrange_pyobj;
49
50typedef struct keyszset_pyobj {
51 PyObject_HEAD
52 int dfl;
53 PyObject *set;
54} keyszset_pyobj;
55
56#define KEYSZ_PYCHECK(o) PyObject_TypeCheck((o), keysz_pytype)
d7ab1bab 57
cfe23cf8
MW		 58#ifndef KSZ_OPMASK
59# define KSZ_OPMASK 0x1f
60#endif
61
62#ifndef KSZ_16BIT
63# define KSZ_16BIT 0x20
64#endif
65
d7ab1bab 66PyObject *keysz_pywrap(const octet *k)
67{
cfe23cf8
MW		 68 unsigned op = *k++;
69#define ARG(i) (op&KSZ_16BIT ? LOAD16(k + 2*(i)) : k[i])
70 switch (op&KSZ_OPMASK) {
d7ab1bab 71 case KSZ_ANY: {
72 keysz_pyobj *o = PyObject_New(keysz_pyobj, keyszany_pytype);
cfe23cf8 73 o->dfl = ARG(0);
d7ab1bab 74 return ((PyObject *)o);
75 } break;
76 case KSZ_RANGE: {
77 keyszrange_pyobj *o =
b2687a0a 78 PyObject_New(keyszrange_pyobj, keyszrange_pytype);
cfe23cf8
MW		 79 o->dfl = ARG(0);
80 o->min = ARG(1);
81 o->max = ARG(2);
82 o->mod = ARG(3);
d7ab1bab 83 if (!o->mod) o->mod = 1;
84 return ((PyObject *)o);
85 } break;
86 case KSZ_SET: {
87 keyszset_pyobj *o =
b2687a0a 88 PyObject_New(keyszset_pyobj, keyszset_pytype);
fd46a88d 89 PyObject *l;
d7ab1bab 90 int i, n;
cfe23cf8
MW		 91 o->dfl = ARG(0);
92 for (i = 0; ARG(i); i++) ;
fd46a88d
MW		 93 n = i; l = PyList_New(n);
94 for (i = 0; i < n; i++) PyList_SET_ITEM(l, i, PyInt_FromLong(ARG(i)));
95 o->set = PyFrozenSet_New(l); Py_DECREF(l);
d7ab1bab 96 return ((PyObject *)o);
97 } break;
98 default:
99 abort();
100 }
cfe23cf8 101#undef ARG
d7ab1bab 102}
103
104static PyObject *keyszany_pynew(PyTypeObject *ty,
105 PyObject *arg, PyObject *kw)
106{
827f89d7 107 static const char *const kwlist[] = { "default", 0 };
d7ab1bab 108 int dfl;
109 keysz_pyobj *o;
110
827f89d7 111 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i:new", KWLIST, &dfl))
d7ab1bab 112 goto end;
113 if (dfl < 0) VALERR("key size cannot be negative");
114 o = (keysz_pyobj *)ty->tp_alloc(ty, 0);
115 o->dfl = dfl;
116 return ((PyObject *)o);
117end:
118 return (0);
119}
120
121static PyObject *keyszrange_pynew(PyTypeObject *ty,
122 PyObject *arg, PyObject *kw)
123{
827f89d7 124 static const char *const kwlist[] = { "default", "min", "max", "mod", 0 };
a9410db7
MW		 125 int dfl, min = 0, max, mod = 1;
126 PyObject *maxobj = Py_None;
d7ab1bab 127 keyszrange_pyobj *o;
128
a9410db7
MW		 129 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|iOi:new", KWLIST,
130 &dfl, &min, &maxobj, &mod))
d7ab1bab 131 goto end;
a9410db7
MW		 132 if (maxobj == Py_None)
133 max = 0;
134 else {
135 max = PyInt_AsLong(maxobj);
136 if (max == -1 && PyErr_Occurred()) goto end;
137 }
138 if (dfl < 0 || min < 0 || max < 0) VALERR("key size cannot be negative");
838ab173
MW		 139 if (min > dfl || (max && dfl > max)) VALERR("bad key size bounds");
140 if (mod <= 0 || dfl%mod || min%mod || max%mod)
d7ab1bab 141 VALERR("bad key size modulus");
142 o = (keyszrange_pyobj *)ty->tp_alloc(ty, 0);
143 o->dfl = dfl;
144 o->min = min;
145 o->max = max;
146 o->mod = mod;
147 return ((PyObject *)o);
148end:
149 return (0);
150}
151
152static PyObject *keyszset_pynew(PyTypeObject *ty,
153 PyObject *arg, PyObject *kw)
154{
827f89d7 155 static const char *const kwlist[] = { "default", "set", 0 };
fd46a88d 156 int dfl, xx;
d7ab1bab 157 PyObject *set = 0;
fd46a88d 158 PyObject *x = 0, *l = 0, *i = 0;
d7ab1bab 159 keyszset_pyobj *o = 0;
160
827f89d7 161 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|O:new", KWLIST, &dfl, &set))
d7ab1bab 162 goto end;
fd46a88d
MW		 163 if (set) i = PyObject_GetIter(set);
164 else { set = PyTuple_New(0); i = PyObject_GetIter(set); Py_DECREF(set); }
165 if (!i) goto end;
4281a7ee 166 l = PyList_New(0); if (!l) goto end;
d7ab1bab 167 if (dfl < 0) VALERR("key size cannot be negative");
fd46a88d
MW		 168 x = PyInt_FromLong(dfl); PyList_Append(l, x); Py_DECREF(x); x = 0;
169 for (;;) {
170 x = PyIter_Next(i); if (!x) break;
171 xx = PyInt_AsLong(x); if (xx == -1 && PyErr_Occurred()) goto end;
d7ab1bab 172 if (xx < 0) VALERR("key size cannot be negative");
fd46a88d 173 PyList_Append(l, x); Py_DECREF(x); x = 0;
d7ab1bab 174 }
fd46a88d 175 if ((set = PyFrozenSet_New(l)) == 0) goto end;
d7ab1bab 176 o = (keyszset_pyobj *)ty->tp_alloc(ty, 0);
177 o->dfl = dfl;
178 o->set = set;
d7ab1bab 179end:
d7ab1bab 180 Py_XDECREF(l);
181 Py_XDECREF(x);
182 return ((PyObject *)o);
183}
184
185static PyObject *kaget_min(PyObject *me, void *hunoz)
186 { return (PyInt_FromLong(0)); }
a9410db7
MW		 187static PyObject *kaget_max(PyObject *me, void *hunoz)
188 { RETURN_NONE; }
189
190static PyObject *krget_max(PyObject *me, void *hunoz)
191{
192 int max = ((keyszrange_pyobj *)me)->max;
193 if (max) return (PyInt_FromLong(max));
194 else RETURN_NONE;
195}
d7ab1bab 196
197static PyObject *ksget_min(PyObject *me, void *hunoz)
198{
fd46a88d
MW		 199 PyObject *i = PyObject_GetIter(((keyszset_pyobj *)me)->set);
200 PyObject *v = 0;
201 int y, x = -1;
202 for (;;) {
203 v = PyIter_Next(i); if (!v) break;
204 y = PyInt_AsLong(v); assert(y >= 0);
d7ab1bab 205 if (x == -1 || y < x) x = y;
206 }
fd46a88d
MW		 207 Py_DECREF(i); Py_XDECREF(v);
208 if (PyErr_Occurred()) return (0);
d7ab1bab 209 return (PyInt_FromLong(x));
210}
211
212static PyObject *ksget_max(PyObject *me, void *hunoz)
213{
fd46a88d
MW		 214 PyObject *i = PyObject_GetIter(((keyszset_pyobj *)me)->set);
215 PyObject *v = 0;
216 int y, x = -1;
217 for (;;) {
218 v = PyIter_Next(i); if (!v) break;
219 y = PyInt_AsLong(v); assert(y >= 0);
d7ab1bab 220 if (y > x) x = y;
221 }
fd46a88d
MW		 222 Py_DECREF(i); Py_XDECREF(v);
223 if (PyErr_Occurred()) return (0);
d7ab1bab 224 return (PyInt_FromLong(x));
225}
226
c90f712e 227static const PyMemberDef keysz_pymembers[] = {
d7ab1bab 228#define MEMBERSTRUCT keysz_pyobj
8dfb09a7 229 MEMRNM(default, T_INT, dfl, READONLY, "KSZ.default -> default key size")
d7ab1bab 230#undef MEMBERSTRUCT
231 { 0 }
232};
233
f281293c 234#define KSZCONVOP(op) \
a157093f 235 static PyObject *kszmeth_##op(PyObject *me, PyObject *arg) \
f281293c
MW		 236 { \
237 double x, y; \
a157093f 238 if (!PyArg_ParseTuple(arg, "d:" #op, &x)) return (0); \
f281293c
MW		 239 y = keysz_##op(x); \
240 return (PyFloat_FromDouble(y)); \
241 }
242KSZCONVOP(fromdl)
243KSZCONVOP(fromschnorr)
244KSZCONVOP(fromif)
245KSZCONVOP(fromec)
246KSZCONVOP(todl)
247KSZCONVOP(toschnorr)
248KSZCONVOP(toif)
249KSZCONVOP(toec)
250#undef KSZCONVOP
251
a157093f
MW		 252static const PyMethodDef keysz_pymethods[] = {
253#define METHNAME(name) kszmeth_##name
254 SMTH (fromdl, "fromdl(N) -> M: "
255 "convert integer discrete log field size to work factor")
256 SMTH (fromschnorr, "fromschnorr(N) -> M: "
257 "convert Schnorr group order to work factor")
258 SMTH (fromif, "fromif(N) -> M: "
259 "convert integer factorization problem size to work factor")
260 SMTH (fromec, "fromec(N) -> M: "
261 "convert elliptic curve group order to work factor")
262 SMTH (todl, "todl(N) -> M: "
263 "convert work factor to integer discrete log field size")
264 SMTH (toschnorr, "toschnorr(N) -> M: "
265 "convert work factor to Schnorr group order")
266 SMTH (toif, "toif(N) -> M: "
267 "convert work factor to integer factorization problem size")
268 SMTH (toec, "toec(N) -> M: "
269 "convert work factor to elliptic curve group order")
270 SMTH (toec, "toec(N) -> M: "
271 "convert work factor to elliptic curve group order")
272#undef METHNAME
273 { 0 }
274};
275
c90f712e 276static const PyGetSetDef keyszany_pygetset[] = {
d7ab1bab 277#define GETSETNAME(op, name) ka##op##_##name
d96c882e
MW		 278 GET (min, "KSZ.min -> smallest allowed key size")
279 GET (max, "KSZ.max -> largest allowed key size")
d7ab1bab 280#undef GETSETNAME
281 { 0 }
282};
283
c90f712e 284static const PyMemberDef keyszrange_pymembers[] = {
d7ab1bab 285#define MEMBERSTRUCT keyszrange_pyobj
d96c882e 286 MEMBER(min, T_INT, READONLY, "KSZ.min -> smallest allowed key size")
d96c882e
MW		 287 MEMBER(mod, T_INT, READONLY,
288 "KSZ.mod -> key size must be a multiple of this")
d7ab1bab 289#undef MEMBERSTRUCT
290 { 0 }
291};
292
a9410db7
MW		 293static const PyGetSetDef keyszrange_pygetset[] = {
294#define GETSETNAME(op, name) kr##op##_##name
295 GET (max, "KSZ.max -> largest allowed key size")
296#undef GETSETNAME
297 { 0 }
298};
299
c90f712e 300static const PyGetSetDef keyszset_pygetset[] = {
d7ab1bab 301#define GETSETNAME(op, name) ks##op##_##name
d96c882e
MW		 302 GET (min, "KSZ.min -> smallest allowed key size")
303 GET (max, "KSZ.max -> largest allowed key size")
d7ab1bab 304#undef GETSETNAME
305 { 0 }
306};
307
c90f712e 308static const PyMemberDef keyszset_pymembers[] = {
d7ab1bab 309#define MEMBERSTRUCT keyszset_pyobj
d96c882e 310 MEMBER(set, T_OBJECT, READONLY, "KSZ.set -> allowed key sizes")
d7ab1bab 311#undef MEMBERSTRUCT
312 { 0 }
313};
314
c263b05c 315static const PyTypeObject keysz_pytype_skel = {
591bf41b 316 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 317 "KeySZ", /* @tp_name@ */
d7ab1bab 318 sizeof(keysz_pyobj), /* @tp_basicsize@ */
319 0, /* @tp_itemsize@ */
320
3aa33042 321 0, /* @tp_dealloc@ */
d7ab1bab 322 0, /* @tp_print@ */
323 0, /* @tp_getattr@ */
324 0, /* @tp_setattr@ */
325 0, /* @tp_compare@ */
326 0, /* @tp_repr@ */
327 0, /* @tp_as_number@ */
328 0, /* @tp_as_sequence@ */
329 0, /* @tp_as_mapping@ */
330 0, /* @tp_hash@ */
331 0, /* @tp_call@ */
332 0, /* @tp_str@ */
333 0, /* @tp_getattro@ */
334 0, /* @tp_setattro@ */
335 0, /* @tp_as_buffer@ */
336 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
337 Py_TPFLAGS_BASETYPE,
338
339 /* @tp_doc@ */
d96c882e 340 "Key size constraints. Abstract.",
d7ab1bab 341
342 0, /* @tp_traverse@ */
343 0, /* @tp_clear@ */
344 0, /* @tp_richcompare@ */
345 0, /* @tp_weaklistoffset@ */
346 0, /* @tp_iter@ */
963a6148 347 0, /* @tp_iternext@ */
a157093f 348 PYMETHODS(keysz), /* @tp_methods@ */
c90f712e 349 PYMEMBERS(keysz), /* @tp_members@ */
d7ab1bab 350 0, /* @tp_getset@ */
351 0, /* @tp_base@ */
352 0, /* @tp_dict@ */
353 0, /* @tp_descr_get@ */
354 0, /* @tp_descr_set@ */
355 0, /* @tp_dictoffset@ */
356 0, /* @tp_init@ */
357 PyType_GenericAlloc, /* @tp_alloc@ */
358 abstract_pynew, /* @tp_new@ */
3aa33042 359 0, /* @tp_free@ */
d7ab1bab 360 0 /* @tp_is_gc@ */
361};
362
c263b05c 363static const PyTypeObject keyszany_pytype_skel = {
591bf41b 364 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 365 "KeySZAny", /* @tp_name@ */
d7ab1bab 366 sizeof(keysz_pyobj), /* @tp_basicsize@ */
367 0, /* @tp_itemsize@ */
368
3aa33042 369 0, /* @tp_dealloc@ */
d7ab1bab 370 0, /* @tp_print@ */
371 0, /* @tp_getattr@ */
372 0, /* @tp_setattr@ */
373 0, /* @tp_compare@ */
374 0, /* @tp_repr@ */
375 0, /* @tp_as_number@ */
376 0, /* @tp_as_sequence@ */
377 0, /* @tp_as_mapping@ */
378 0, /* @tp_hash@ */
379 0, /* @tp_call@ */
380 0, /* @tp_str@ */
381 0, /* @tp_getattro@ */
382 0, /* @tp_setattro@ */
383 0, /* @tp_as_buffer@ */
384 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
385 Py_TPFLAGS_BASETYPE,
386
387 /* @tp_doc@ */
d96c882e
MW		 388 "KeySZAny(DEFAULT)\n"
389 " Key size constraints. This object imposes no constraints on size.",
d7ab1bab 390
391 0, /* @tp_traverse@ */
392 0, /* @tp_clear@ */
393 0, /* @tp_richcompare@ */
394 0, /* @tp_weaklistoffset@ */
395 0, /* @tp_iter@ */
963a6148 396 0, /* @tp_iternext@ */
d7ab1bab 397 0, /* @tp_methods@ */
398 0, /* @tp_members@ */
c90f712e 399 PYGETSET(keyszany), /* @tp_getset@ */
d7ab1bab 400 0, /* @tp_base@ */
401 0, /* @tp_dict@ */
402 0, /* @tp_descr_get@ */
403 0, /* @tp_descr_set@ */
404 0, /* @tp_dictoffset@ */
405 0, /* @tp_init@ */
406 PyType_GenericAlloc, /* @tp_alloc@ */
407 keyszany_pynew, /* @tp_new@ */
3aa33042 408 0, /* @tp_free@ */
d7ab1bab 409 0 /* @tp_is_gc@ */
410};
411
c263b05c 412static const PyTypeObject keyszrange_pytype_skel = {
591bf41b 413 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 414 "KeySZRange", /* @tp_name@ */
d7ab1bab 415 sizeof(keyszrange_pyobj), /* @tp_basicsize@ */
416 0, /* @tp_itemsize@ */
417
3aa33042 418 0, /* @tp_dealloc@ */
d7ab1bab 419 0, /* @tp_print@ */
420 0, /* @tp_getattr@ */
421 0, /* @tp_setattr@ */
422 0, /* @tp_compare@ */
423 0, /* @tp_repr@ */
424 0, /* @tp_as_number@ */
425 0, /* @tp_as_sequence@ */
426 0, /* @tp_as_mapping@ */
427 0, /* @tp_hash@ */
428 0, /* @tp_call@ */
429 0, /* @tp_str@ */
430 0, /* @tp_getattro@ */
431 0, /* @tp_setattro@ */
432 0, /* @tp_as_buffer@ */
433 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
434 Py_TPFLAGS_BASETYPE,
435
436 /* @tp_doc@ */
d96c882e
MW		 437 "KeySZRange(DEFAULT, [min = 0], [max = 0], [mod = 1])\n"
438 " Key size constraints: size must be between MIN and MAX inclusive, and\n"
439 " be a multiple of MOD.",
d7ab1bab 440
441 0, /* @tp_traverse@ */
442 0, /* @tp_clear@ */
443 0, /* @tp_richcompare@ */
444 0, /* @tp_weaklistoffset@ */
445 0, /* @tp_iter@ */
963a6148 446 0, /* @tp_iternext@ */
d7ab1bab 447 0, /* @tp_methods@ */
c90f712e 448 PYMEMBERS(keyszrange), /* @tp_members@ */
a9410db7 449 PYGETSET(keyszrange), /* @tp_getset@ */
d7ab1bab 450 0, /* @tp_base@ */
451 0, /* @tp_dict@ */
452 0, /* @tp_descr_get@ */
453 0, /* @tp_descr_set@ */
454 0, /* @tp_dictoffset@ */
455 0, /* @tp_init@ */
456 PyType_GenericAlloc, /* @tp_alloc@ */
457 keyszrange_pynew, /* @tp_new@ */
3aa33042 458 0, /* @tp_free@ */
d7ab1bab 459 0 /* @tp_is_gc@ */
460};
461
c263b05c 462static const PyTypeObject keyszset_pytype_skel = {
591bf41b 463 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 464 "KeySZSet", /* @tp_name@ */
d7ab1bab 465 sizeof(keyszset_pyobj), /* @tp_basicsize@ */
466 0, /* @tp_itemsize@ */
467
3aa33042 468 0, /* @tp_dealloc@ */
d7ab1bab 469 0, /* @tp_print@ */
470 0, /* @tp_getattr@ */
471 0, /* @tp_setattr@ */
472 0, /* @tp_compare@ */
473 0, /* @tp_repr@ */
474 0, /* @tp_as_number@ */
475 0, /* @tp_as_sequence@ */
476 0, /* @tp_as_mapping@ */
477 0, /* @tp_hash@ */
478 0, /* @tp_call@ */
479 0, /* @tp_str@ */
480 0, /* @tp_getattro@ */
481 0, /* @tp_setattro@ */
482 0, /* @tp_as_buffer@ */
483 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
484 Py_TPFLAGS_BASETYPE,
485
486 /* @tp_doc@ */
fd46a88d
MW		 487 "KeySZSet(DEFAULT, ITER)\n"
488 " Key size constraints: size must be DEFAULT or an element of ITER.",
d7ab1bab 489
490 0, /* @tp_traverse@ */
491 0, /* @tp_clear@ */
492 0, /* @tp_richcompare@ */
493 0, /* @tp_weaklistoffset@ */
494 0, /* @tp_iter@ */
963a6148 495 0, /* @tp_iternext@ */
d7ab1bab 496 0, /* @tp_methods@ */
c90f712e
MW		 497 PYMEMBERS(keyszset), /* @tp_members@ */
498 PYGETSET(keyszset), /* @tp_getset@ */
d7ab1bab 499 0, /* @tp_base@ */
500 0, /* @tp_dict@ */
501 0, /* @tp_descr_get@ */
502 0, /* @tp_descr_set@ */
503 0, /* @tp_dictoffset@ */
504 0, /* @tp_init@ */
505 PyType_GenericAlloc, /* @tp_alloc@ */
506 keyszset_pynew, /* @tp_new@ */
3aa33042 507 0, /* @tp_free@ */
d7ab1bab 508 0 /* @tp_is_gc@ */
509};
510
511/*----- Symmetric encryption ----------------------------------------------*/
512
c6e89d48
MW		 513static PyTypeObject *gccipher_pytype, *gcipher_pytype;
514
515typedef struct gccipher_pyobj {
516 PyHeapTypeObject ty;
517 gccipher *cc;
518} gccipher_pyobj;
519
520#define GCCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gccipher_pytype)
521#define GCCIPHER_CC(o) (((gccipher_pyobj *)(o))->cc)
522
523typedef struct gcipher_pyobj {
524 PyObject_HEAD
525 gcipher *c;
526} gcipher_pyobj;
527
528#define GCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gcipher_pytype)
529#define GCIPHER_C(o) (((gcipher_pyobj *)(o))->c)
d7ab1bab 530
531CONVFUNC(gccipher, gccipher *, GCCIPHER_CC)
d7ab1bab 532
c6e89d48 533static PyObject *gcipher_pywrap(PyObject *cobj, gcipher *c)
d7ab1bab 534{
535 gcipher_pyobj *g;
536 if (!cobj) cobj = gccipher_pywrap((/*unconst*/ gccipher *)GC_CLASS(c));
537 else Py_INCREF(cobj);
538 g = PyObject_NEW(gcipher_pyobj, (PyTypeObject *)cobj);
539 g->c = c;
b2687a0a 540 return ((PyObject *)g);
d7ab1bab 541}
542
543static PyObject *gcipher_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
544{
827f89d7 545 static const char *const kwlist[] = { "k", 0 };
67c75893 546 struct bin k;
d7ab1bab 547
67c75893 548 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
d7ab1bab 549 goto end;
67c75893 550 if (keysz(k.sz, GCCIPHER_CC(ty)->keysz) != k.sz) VALERR("bad key length");
d7ab1bab 551 return (gcipher_pywrap((PyObject *)ty,
67c75893 552 GC_INIT(GCCIPHER_CC(ty), k.p, k.sz)));
d7ab1bab 553end:
b2687a0a 554 return (0);
d7ab1bab 555}
556
557PyObject *gccipher_pywrap(gccipher *cc)
558{
df9f8366 559 gccipher_pyobj *g = newtype(gccipher_pytype, 0, cc->name);
d7ab1bab 560 g->cc = cc;
24b3d57b
MW		 561 g->ty.ht_type.tp_basicsize = sizeof(gcipher_pyobj);
562 g->ty.ht_type.tp_base = gcipher_pytype;
d7ab1bab 563 Py_INCREF(gcipher_pytype);
24b3d57b
MW		 564 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
565 Py_TPFLAGS_BASETYPE |
566 Py_TPFLAGS_HEAPTYPE);
567 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
568 g->ty.ht_type.tp_free = 0;
569 g->ty.ht_type.tp_new = gcipher_pynew;
dc075750 570 typeready(&g->ty.ht_type);
d7ab1bab 571 return ((PyObject *)g);
572}
573
574static void gcipher_pydealloc(PyObject *me)
575{
c41d0371 576 GC_DESTROY(GCIPHER_C(me));
2a448f86 577 Py_DECREF(Py_TYPE(me));
3aa33042 578 FREEOBJ(me);
d7ab1bab 579}
580
581static PyObject *gccget_name(PyObject *me, void *hunoz)
2135a6d3 582 { return (TEXT_FROMSTR(GCCIPHER_CC(me)->name)); }
d7ab1bab 583
584static PyObject *gccget_keysz(PyObject *me, void *hunoz)
585 { return (keysz_pywrap(GCCIPHER_CC(me)->keysz)); }
586
587static PyObject *gccget_blksz(PyObject *me, void *hunoz)
588 { return (PyInt_FromLong(GCCIPHER_CC(me)->blksz)); }
589
590static PyObject *gcmeth_encrypt(PyObject *me, PyObject *arg)
591{
67c75893 592 struct bin m;
d7ab1bab 593 PyObject *rc = 0;
594
67c75893
MW		 595 if (!PyArg_ParseTuple(arg, "O&:encrypt", convbin, &m)) return (0);
596 rc = bytestring_pywrap(0, m.sz);
2135a6d3 597 GC_ENCRYPT(GCIPHER_C(me), m.p, BIN_PTR(rc), m.sz);
d7ab1bab 598 return (rc);
599}
600
601static PyObject *gcmeth_enczero(PyObject *me, PyObject *arg)
602{
603 char *p;
604 int sz;
605 PyObject *rc = 0;
606
607 if (!PyArg_ParseTuple(arg, "i:enczero", &sz)) return (0);
608 rc = bytestring_pywrap(0, sz);
2135a6d3 609 p = BIN_PTR(rc);
d7ab1bab 610 memset(p, 0, sz);
611 GC_ENCRYPT(GCIPHER_C(me), p, p, sz);
612 return (rc);
613}
614
615static PyObject *gcmeth_decrypt(PyObject *me, PyObject *arg)
616{
67c75893 617 struct bin c;
d7ab1bab 618 PyObject *rc = 0;
619
67c75893
MW		 620 if (!PyArg_ParseTuple(arg, "O&:decrypt", convbin, &c)) return (0);
621 rc = bytestring_pywrap(0, c.sz);
2135a6d3 622 GC_DECRYPT(GCIPHER_C(me), c.p, BIN_PTR(rc), c.sz);
d7ab1bab 623 return (rc);
624}
625
626static PyObject *gcmeth_deczero(PyObject *me, PyObject *arg)
627{
628 char *p;
629 int sz;
630 PyObject *rc = 0;
631
632 if (!PyArg_ParseTuple(arg, "i:deczero", &sz)) return (0);
633 rc = bytestring_pywrap(0, sz);
2135a6d3 634 p = BIN_PTR(rc);
d7ab1bab 635 memset(p, 0, sz);
636 GC_DECRYPT(GCIPHER_C(me), p, p, sz);
637 return (rc);
638}
639
640static PyObject *gcmeth_setiv(PyObject *me, PyObject *arg)
641{
67c75893 642 struct bin iv;
d7ab1bab 643
67c75893 644 if (!PyArg_ParseTuple(arg, "O&:setiv", convbin, &iv)) goto end;
30eef666 645 if (!GCIPHER_C(me)->ops->setiv) VALERR("`setiv' not supported");
d7ab1bab 646 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
67c75893
MW		 647 if (iv.sz != GC_CLASS(GCIPHER_C(me))->blksz) VALERR("bad IV length");
648 GC_SETIV(GCIPHER_C(me), iv.p);
d7ab1bab 649 RETURN_ME;
650end:
651 return (0);
652}
653
91e56f06 654static PyObject *gcmeth_bdry(PyObject *me)
d7ab1bab 655{
30eef666 656 if (!GCIPHER_C(me)->ops->bdry) VALERR("`bdry' not supported");
d7ab1bab 657 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
658 GC_BDRY(GCIPHER_C(me));
659 RETURN_ME;
660end:
661 return (0);
662}
663
c90f712e 664static const PyGetSetDef gccipher_pygetset[] = {
d7ab1bab 665#define GETSETNAME(op, name) gcc##op##_##name
d96c882e
MW		 666 GET (keysz, "CC.keysz -> acceptable key sizes")
667 GET (blksz, "CC.blksz -> block size, or zero")
668 GET (name, "CC.name -> name of this kind of cipher")
d7ab1bab 669#undef GETSETNAME
670 { 0 }
671};
672
c90f712e 673static const PyMethodDef gcipher_pymethods[] = {
d7ab1bab 674#define METHNAME(name) gcmeth_##name
d96c882e
MW		 675 METH (encrypt, "C.encrypt(PT) -> CT")
676 METH (enczero, "C.enczero(N) -> CT")
677 METH (decrypt, "C.decrypt(CT) -> PT")
678 METH (deczero, "C.deczero(N) -> PT")
679 METH (setiv, "C.setiv(IV)")
91e56f06 680 NAMETH(bdry, "C.bdry()")
d7ab1bab 681#undef METHNAME
682 { 0 }
683};
684
c263b05c 685static const PyTypeObject gccipher_pytype_skel = {
591bf41b 686 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 687 "GCCipher", /* @tp_name@ */
d7ab1bab 688 sizeof(gccipher_pyobj), /* @tp_basicsize@ */
689 0, /* @tp_itemsize@ */
690
691 0, /* @tp_dealloc@ */
692 0, /* @tp_print@ */
693 0, /* @tp_getattr@ */
694 0, /* @tp_setattr@ */
695 0, /* @tp_compare@ */
696 0, /* @tp_repr@ */
697 0, /* @tp_as_number@ */
698 0, /* @tp_as_sequence@ */
699 0, /* @tp_as_mapping@ */
700 0, /* @tp_hash@ */
701 0, /* @tp_call@ */
702 0, /* @tp_str@ */
703 0, /* @tp_getattro@ */
704 0, /* @tp_setattro@ */
705 0, /* @tp_as_buffer@ */
706 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
707 Py_TPFLAGS_BASETYPE,
708
709 /* @tp_doc@ */
d96c882e 710 "Symmetric cipher metaclass.",
d7ab1bab 711
712 0, /* @tp_traverse@ */
713 0, /* @tp_clear@ */
714 0, /* @tp_richcompare@ */
715 0, /* @tp_weaklistoffset@ */
716 0, /* @tp_iter@ */
963a6148 717 0, /* @tp_iternext@ */
d7ab1bab 718 0, /* @tp_methods@ */
719 0, /* @tp_members@ */
c90f712e 720 PYGETSET(gccipher), /* @tp_getset@ */
d7ab1bab 721 0, /* @tp_base@ */
722 0, /* @tp_dict@ */
723 0, /* @tp_descr_get@ */
724 0, /* @tp_descr_set@ */
725 0, /* @tp_dictoffset@ */
726 0, /* @tp_init@ */
727 PyType_GenericAlloc, /* @tp_alloc@ */
728 abstract_pynew, /* @tp_new@ */
3aa33042 729 0, /* @tp_free@ */
d7ab1bab 730 0 /* @tp_is_gc@ */
731};
732
c263b05c 733static const PyTypeObject gcipher_pytype_skel = {
591bf41b 734 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 735 "GCipher", /* @tp_name@ */
d7ab1bab 736 sizeof(gcipher_pyobj), /* @tp_basicsize@ */
737 0, /* @tp_itemsize@ */
738
739 gcipher_pydealloc, /* @tp_dealloc@ */
740 0, /* @tp_print@ */
741 0, /* @tp_getattr@ */
742 0, /* @tp_setattr@ */
743 0, /* @tp_compare@ */
744 0, /* @tp_repr@ */
745 0, /* @tp_as_number@ */
746 0, /* @tp_as_sequence@ */
747 0, /* @tp_as_mapping@ */
748 0, /* @tp_hash@ */
749 0, /* @tp_call@ */
750 0, /* @tp_str@ */
751 0, /* @tp_getattro@ */
752 0, /* @tp_setattro@ */
753 0, /* @tp_as_buffer@ */
754 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
755 Py_TPFLAGS_BASETYPE,
756
757 /* @tp_doc@ */
d96c882e 758 "Symmetric cipher, abstract base class.",
d7ab1bab 759
760 0, /* @tp_traverse@ */
761 0, /* @tp_clear@ */
762 0, /* @tp_richcompare@ */
763 0, /* @tp_weaklistoffset@ */
764 0, /* @tp_iter@ */
963a6148 765 0, /* @tp_iternext@ */
c90f712e 766 PYMETHODS(gcipher), /* @tp_methods@ */
d7ab1bab 767 0, /* @tp_members@ */
768 0, /* @tp_getset@ */
769 0, /* @tp_base@ */
770 0, /* @tp_dict@ */
771 0, /* @tp_descr_get@ */
772 0, /* @tp_descr_set@ */
773 0, /* @tp_dictoffset@ */
774 0, /* @tp_init@ */
775 PyType_GenericAlloc, /* @tp_alloc@ */
776 abstract_pynew, /* @tp_new@ */
3aa33042 777 0, /* @tp_free@ */
d7ab1bab 778 0 /* @tp_is_gc@ */
779};
780
bebf03ab
MW		 781/*----- Authenticated encryption ------------------------------------------*/
782
c6e89d48
MW		 783static PyTypeObject *gcaead_pytype, *gaeadkey_pytype;
784static PyTypeObject *gcaeadaad_pytype, *gaeadaad_pytype;
785static PyTypeObject *gcaeadenc_pytype, *gaeadenc_pytype;
786static PyTypeObject *gcaeaddec_pytype, *gaeaddec_pytype;
787
788typedef struct gcaead_pyobj {
789 PyHeapTypeObject ty;
790 gcaead *aec;
791 struct gcaeadaad_pyobj *aad;
792 struct gcaeadenc_pyobj *enc;
793 struct gcaeaddec_pyobj *dec;
794} gcaead_pyobj;
795
796#define GCAEAD_PYCHECK(o) PyObject_TypeCheck((o), gcaead_pytype)
797#define GCAEAD_AEC(o) (((gcaead_pyobj *)(o))->aec)
798#define GCAEAD_AAD(o) (((gcaead_pyobj *)(o))->aad)
799#define GCAEAD_ENC(o) (((gcaead_pyobj *)(o))->enc)
800#define GCAEAD_DEC(o) (((gcaead_pyobj *)(o))->dec)
801static PyObject *gcaead_pywrap(gcaead *);
802
803typedef struct gaeadkey_pyobj {
804 PyObject_HEAD
805 gaead_key *k;
806} gaeadkey_pyobj;
807
808#define GAEADKEY_PYCHECK(o) PyObject_TypeCheck((o), gaeadkey_pytype)
809#define GAEADKEY_K(o) (((gaeadkey_pyobj *)(o))->k)
810
811typedef struct gcaeadaad_pyobj {
812 PyHeapTypeObject ty;
813 gcaead_pyobj *key;
814} gcaeadaad_pyobj;
815
816#define GCAEADAAD_KEY(o) (((gcaeadaad_pyobj *)(o))->key)
817static PyObject *gaeadaad_pywrap(PyObject *, gaead_aad *, unsigned, size_t);
818
819typedef struct gaeadaad_pyobj {
820 PyObject_HEAD
821 gaead_aad *a;
822 unsigned f;
823#define AEADF_DEAD 32768u
824 size_t hsz, hlen;
825} gaeadaad_pyobj;
826
827#define GAEADAAD_PYCHECK(o) PyObject_TypeCheck((o), gaeadaad_pytype)
828#define GAEADAAD_A(o) (((gaeadaad_pyobj *)(o))->a)
829#define GAEADAAD_F(o) (((gaeadaad_pyobj *)(o))->f)
830#define GAEADAAD_HSZ(o) (((gaeadaad_pyobj *)(o))->hsz)
831#define GAEADAAD_HLEN(o) (((gaeadaad_pyobj *)(o))->hlen)
832
833typedef struct gcaeadenc_pyobj {
834 PyHeapTypeObject ty;
835 gcaead_pyobj *key;
836} gcaeadenc_pyobj;
837
838#define GCAEADENC_KEY(o) (((gcaeadenc_pyobj *)(o))->key)
839static PyObject *gaeadenc_pywrap(PyObject *, gaead_enc *, unsigned,
840 size_t, size_t, size_t);
841
842typedef struct gaeadenc_pyobj {
843 PyObject_HEAD
844 gaead_enc *e;
845 gaeadaad_pyobj *aad;
846 unsigned f;
847 size_t hsz, msz, tsz;
848 size_t mlen;
849} gaeadenc_pyobj;
850
851#define GAEADENC_PYCHECK(o) PyObject_TypeCheck((o), gaeadenc_pytype)
852#define GAEADENC_AAD(o) (((gaeadenc_pyobj *)(o))->aad)
853#define GAEADENC_E(o) (((gaeadenc_pyobj *)(o))->e)
854#define GAEADENC_F(o) (((gaeadenc_pyobj *)(o))->f)
855#define GAEADENC_HSZ(o) (((gaeadenc_pyobj *)(o))->hsz)
856#define GAEADENC_MSZ(o) (((gaeadenc_pyobj *)(o))->msz)
857#define GAEADENC_TSZ(o) (((gaeadenc_pyobj *)(o))->tsz)
858#define GAEADENC_MLEN(o) (((gaeadenc_pyobj *)(o))->mlen)
859
860typedef struct gcaeaddec_pyobj {
861 PyHeapTypeObject ty;
862 gcaead_pyobj *key;
863} gcaeaddec_pyobj;
864
865#define GCAEADDEC_KEY(o) (((gcaeaddec_pyobj *)(o))->key)
866static PyObject *gaeaddec_pywrap(PyObject *, gaead_dec *, unsigned,
867 size_t, size_t, size_t);
868
869typedef struct gaeaddec_pyobj {
870 PyObject_HEAD
871 gaead_dec *d;
872 gaeadaad_pyobj *aad;
873 unsigned f;
874 size_t hsz, csz, tsz;
875 size_t clen;
876} gaeaddec_pyobj;
877
878#define GAEADDEC_PYCHECK(o) PyObject_TypeCheck((o), gaeaddec_pytype)
879#define GAEADDEC_AAD(o) (((gaeaddec_pyobj *)(o))->aad)
880#define GAEADDEC_D(o) (((gaeaddec_pyobj *)(o))->d)
881#define GAEADDEC_F(o) (((gaeaddec_pyobj *)(o))->f)
882#define GAEADDEC_HSZ(o) (((gaeaddec_pyobj *)(o))->hsz)
883#define GAEADDEC_CSZ(o) (((gaeaddec_pyobj *)(o))->csz)
884#define GAEADDEC_TSZ(o) (((gaeaddec_pyobj *)(o))->tsz)
885#define GAEADDEC_CLEN(o) (((gaeaddec_pyobj *)(o))->clen)
886
887static PyObject *gaeadkey_pywrap(PyObject *cobj, gaead_key *k)
bebf03ab
MW		 888{
889 gaeadkey_pyobj *gk;
890
891 if (!cobj) cobj = gcaead_pywrap((/*unconst*/ gcaead *)GAEAD_CLASS(k));
892 else Py_INCREF(cobj);
893 gk = PyObject_NEW(gaeadkey_pyobj, (PyTypeObject *)cobj);
894 gk->k = k;
895 return ((PyObject *)gk);
896}
897
898static PyObject *gaeadkey_pynew(PyTypeObject *ty,
899 PyObject *arg, PyObject *kw)
900{
901 static const char *const kwlist[] = { "k", 0 };
67c75893 902 struct bin k;
bebf03ab 903
67c75893 904 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
bebf03ab 905 goto end;
67c75893 906 if (keysz(k.sz, GCAEAD_AEC(ty)->keysz) != k.sz) VALERR("bad key length");
bebf03ab 907 return (gaeadkey_pywrap((PyObject *)ty,
67c75893 908 GAEAD_KEY(GCAEAD_AEC(ty), k.p, k.sz)));
bebf03ab
MW		 909end:
910 return (0);
911}
912
c6e89d48 913static PyObject *gcaead_pywrap(gcaead *aec)
bebf03ab
MW		 914{
915 gcaead_pyobj *gck;
916 gcaeadaad_pyobj *gca;
917 gcaeadenc_pyobj *gce;
918 gcaeaddec_pyobj *gcd;
919
920#define MKTYPE(obj, thing, newfn, namefmt) do { \
921 (obj) = newtype(gcaead_pytype, 0, 0); \
2135a6d3
MW		 922 (obj)->ty.ht_name = TEXT_FORMAT(namefmt, aec->name); \
923 (obj)->ty.ht_type.tp_name = TEXT_PTR((obj)->ty.ht_name); \
bebf03ab
MW		 924 (obj)->ty.ht_type.tp_basicsize = sizeof(gaead##thing##_pyobj); \
925 (obj)->ty.ht_type.tp_base = gaead##thing##_pytype; \
926 Py_INCREF(gaead##thing##_pytype); \
927 (obj)->ty.ht_type.tp_flags = \
928 (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE); \
929 (obj)->ty.ht_type.tp_alloc = PyType_GenericAlloc; \
930 (obj)->ty.ht_type.tp_free = 0; \
931 (obj)->ty.ht_type.tp_new = newfn; \
932 typeready(&(obj)->ty.ht_type); \
933} while (0)
934
935 MKTYPE(gck, key, gaeadkey_pynew, "%s(key)");
936 MKTYPE(gca, aad, abstract_pynew, "%s(aad-hash)");
937 MKTYPE(gce, enc, abstract_pynew, "%s(encrypt)");
938 MKTYPE(gcd, dec, abstract_pynew, "%s(decrypt)");
939
940#undef MKTYPE
941
942 gck->aec = aec; gck->aad = gca; gck->enc = gce; gck->dec = gcd;
943 gca->key = gce->key = gcd->key = gck;
944 return ((PyObject *)gck);
945}
946
947static void gaeadkey_pydealloc(PyObject *me)
2a448f86 948 { GAEAD_DESTROY(GAEADKEY_K(me)); Py_DECREF(Py_TYPE(me)); FREEOBJ(me); }
bebf03ab
MW		 949
950static PyObject *gcaeget_name(PyObject *me, void *hunoz)
2135a6d3 951 { return (TEXT_FROMSTR(GCAEAD_AEC(me)->name)); }
bebf03ab
MW		 952
953static PyObject *gcaeget_keysz(PyObject *me, void *hunoz)
954 { return (keysz_pywrap(GCAEAD_AEC(me)->keysz)); }
955
956static PyObject *gcaeget_noncesz(PyObject *me, void *hunoz)
957 { return (keysz_pywrap(GCAEAD_AEC(me)->noncesz)); }
958
959static PyObject *gcaeget_tagsz(PyObject *me, void *hunoz)
960 { return (keysz_pywrap(GCAEAD_AEC(me)->tagsz)); }
961
962static PyObject *gcaeget_blksz(PyObject *me, void *hunoz)
963 { return (PyInt_FromLong(GCAEAD_AEC(me)->blksz)); }
964
965static PyObject *gcaeget_bufsz(PyObject *me, void *hunoz)
966 { return (PyInt_FromLong(GCAEAD_AEC(me)->bufsz)); }
967
968static PyObject *gcaeget_ohd(PyObject *me, void *hunoz)
969 { return (PyInt_FromLong(GCAEAD_AEC(me)->ohd)); }
970
971static PyObject *gcaeget_flags(PyObject *me, void *hunoz)
972 { return (PyInt_FromLong(GCAEAD_AEC(me)->f)); }
973
c90f712e 974static const PyGetSetDef gcaead_pygetset[] = {
bebf03ab 975#define GETSETNAME(op, name) gcae##op##_##name
d96c882e
MW		 976 GET (keysz, "AEC.keysz -> acceptable key sizes")
977 GET (noncesz, "AEC.noncesz -> acceptable nonce sizes")
978 GET (tagsz, "AEC.tagsz -> acceptable tag sizes")
979 GET (blksz, "AEC.blksz -> block size, or zero")
980 GET (bufsz, "AEC.bufsz -> amount of data buffered internally")
981 GET (ohd, "AEC.ohd -> maximum encryption overhead")
982 GET (name, "AEC.name -> name of this kind of AEAD scheme")
983 GET (flags, "AEC.flags -> mask of `AEADF_...' flags")
bebf03ab
MW		 984#undef GETSETNAME
985 { 0 }
986};
987
91e56f06 988static PyObject *gaekmeth_aad(PyObject *me)
bebf03ab
MW		 989{
990 const gaead_key *k = GAEADKEY_K(me);
991 PyObject *rc = 0;
992
bebf03ab
MW		 993 if (k->ops->c->f&AEADF_AADNDEP)
994 VALERR("aad must be associated with enc/dec op");
2a448f86 995 rc = gaeadaad_pywrap((PyObject *)GCAEAD_AAD(Py_TYPE(me)),
bebf03ab
MW		 996 GAEAD_AAD(k), 0, 0);
997end:
998 return (rc);
999}
1000
1001static int check_aead_encdec(const gcaead *aec, unsigned *f_out, size_t nsz,
1002 PyObject *hszobj, size_t *hsz_out,
1003 PyObject *mszobj, size_t *msz_out,
1004 PyObject *tszobj, size_t *tsz_out)
1005{
1006 unsigned f = 0, miss;
1007 int rc = -1;
1008
1009 if (hszobj != Py_None)
1010 { f |= AEADF_PCHSZ; if (!convszt(hszobj, hsz_out)) goto end; }
1011 if (mszobj != Py_None)
1012 { f |= AEADF_PCMSZ; if (!convszt(mszobj, msz_out)) goto end; }
1013 if (tszobj != Py_None)
1014 { f |= AEADF_PCTSZ; if (!convszt(tszobj, tsz_out)) goto end; }
1015 miss = aec->f&~f;
1016 if (miss&AEADF_PCHSZ) VALERR("header length precommitment required");
1017 if (miss&AEADF_PCMSZ) VALERR("message length precommitment required");
1018 if (miss&AEADF_PCTSZ) VALERR("tag length precommitment required");
1019 if (keysz(nsz, aec->noncesz) != nsz) VALERR("bad nonce length");
1020 if (tszobj != Py_None && keysz(*tsz_out, aec->tagsz) != *tsz_out)
1021 VALERR("bad tag length");
1022 *f_out = f | aec->f; rc = 0;
1023end:
1024 return (rc);
1025}
1026
1027static PyObject *gaekmeth_enc(PyObject *me, PyObject *arg, PyObject *kw)
1028{
1029 static const char *const kwlist[] = { "nonce", "hsz", "msz", "tsz", 0 };
1030 const gaead_key *k = GAEADKEY_K(me);
1031 gaead_enc *e;
1032 PyObject *rc = 0;
67c75893 1033 struct bin n;
bebf03ab
MW		 1034 PyObject *hszobj = Py_None, *mszobj = Py_None, *tszobj = Py_None;
1035 size_t hsz = 0, msz = 0, tsz = 0;
1036 unsigned f;
1037
67c75893
MW		 1038 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|OOO:enc", KWLIST,
1039 convbin, &n, &hszobj, &mszobj, &tszobj))
bebf03ab 1040 goto end;
67c75893 1041 if (check_aead_encdec(k->ops->c, &f, n.sz,
bebf03ab
MW		 1042 hszobj, &hsz, mszobj, &msz, tszobj, &tsz))
1043 goto end;
67c75893 1044 e = GAEAD_ENC(GAEADKEY_K(me), n.p, n.sz, hsz, msz, tsz);
bebf03ab 1045 if (!e) VALERR("bad aead parameter combination");
2a448f86 1046 rc = gaeadenc_pywrap((PyObject *)GCAEAD_ENC(Py_TYPE(me)),
bebf03ab
MW		 1047 e, f, hsz, msz, tsz);
1048end:
1049 return (rc);
1050}
1051
1052static PyObject *gaekmeth_dec(PyObject *me, PyObject *arg, PyObject *kw)
1053{
1054 static const char *const kwlist[] = { "nonce", "hsz", "csz", "tsz", 0 };
1055 const gaead_key *k = GAEADKEY_K(me);
1056 gaead_dec *d;
1057 PyObject *rc = 0;
67c75893 1058 struct bin n;
bebf03ab
MW		 1059 PyObject *hszobj = Py_None, *cszobj = Py_None, *tszobj = Py_None;
1060 size_t hsz = 0, csz = 0, tsz = 0;
1061 unsigned f;
1062
67c75893
MW		 1063 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|OOO:dec", KWLIST,
1064 convbin, &n, &hszobj, &cszobj, &tszobj))
bebf03ab 1065 goto end;
67c75893 1066 if (check_aead_encdec(k->ops->c, &f, n.sz,
bebf03ab
MW		 1067 hszobj, &hsz, cszobj, &csz, tszobj, &tsz))
1068 goto end;
67c75893 1069 d = GAEAD_DEC(GAEADKEY_K(me), n.p, n.sz, hsz, csz, tsz);
bebf03ab 1070 if (!d) VALERR("bad aead parameter combination");
2a448f86 1071 rc = gaeaddec_pywrap((PyObject *)GCAEAD_DEC(Py_TYPE(me)),
bebf03ab
MW		 1072 d, f, hsz, csz, tsz);
1073end:
1074 return (rc);
1075}
1076
c90f712e 1077static const PyMethodDef gaeadkey_pymethods[] = {
bebf03ab 1078#define METHNAME(name) gaekmeth_##name
91e56f06 1079 NAMETH(aad, "KEY.aad() -> AAD")
d96c882e
MW		 1080 KWMETH(enc, "KEY.enc(NONCE, [hsz], [msz], [tsz]) -> ENC")
1081 KWMETH(dec, "KEY.dec(NONCE, [hsz], [csz], [tsz]) -> DEC")
bebf03ab
MW		 1082#undef METHNAME
1083 { 0 }
1084};
1085
c6e89d48
MW		 1086static PyObject *gaeadaad_pywrap(PyObject *cobj, gaead_aad *a,
1087 unsigned f, size_t hsz)
bebf03ab
MW		 1088{
1089 gaeadaad_pyobj *ga;
1090
1091 assert(cobj); Py_INCREF(cobj);
1092 ga = PyObject_NEW(gaeadaad_pyobj, (PyTypeObject *)cobj);
1093 ga->a = a; ga->f = f; ga->hsz = hsz; ga->hlen = 0;
1094 return ((PyObject *)ga);
1095}
1096
1097static void gaeadaad_pydealloc(PyObject *me)
1098{
1099 gaeadaad_pyobj *ga = (gaeadaad_pyobj *)me;
1100
1101 if (ga->a) GAEAD_DESTROY(ga->a);
2a448f86 1102 Py_DECREF(Py_TYPE(me)); FREEOBJ(me);
bebf03ab
MW		 1103}
1104
1105static int gaea_check(PyObject *me)
1106{
1107 gaeadaad_pyobj *ga = (gaeadaad_pyobj *)me;
1108 int rc = -1;
1109
1110 if ((ga->f&AEADF_DEAD) || !ga->a) VALERR("aad object no longer active");
1111 rc = 0;
1112end:
1113 return (rc);
1114}
1115
1116static void gaea_invalidate(gaeadaad_pyobj *ga)
1117 { if (ga) ga->f |= AEADF_DEAD; }
1118
1119static void gaea_sever(gaeadaad_pyobj **ga_inout)
1120{
1121 gaeadaad_pyobj *ga = *ga_inout;
1122 if (ga) { ga->f |= AEADF_DEAD; ga->a = 0; Py_DECREF(ga); *ga_inout = 0; }
1123}
1124
1125static PyObject *gaeaget_hsz(PyObject *me, void *hunoz)
1126{
1127 if (gaea_check(me)) return (0);
1128 else if (GAEADAAD_F(me)&AEADF_PCHSZ) return getulong(GAEADAAD_HSZ(me));
1129 else RETURN_NONE;
1130}
1131
1132static PyObject *gaeaget_hlen(PyObject *me, void *hunoz)
1133 { return (gaea_check(me) ? 0 : getulong(GAEADAAD_HLEN(me))); }
1134
c90f712e 1135static const PyGetSetDef gaeadaad_pygetset[] = {
bebf03ab 1136#define GETSETNAME(op, name) gaea##op##_##name
d96c882e
MW		 1137 GET (hsz, "AAD.hsz -> precommitted header length or `None'")
1138 GET (hlen, "AAD.hlen -> header length so far")
bebf03ab
MW		 1139#undef GETSETNAME
1140 { 0 }
1141};
1142
91e56f06 1143static PyObject *gaeameth_copy(PyObject *me)
bebf03ab
MW		 1144{
1145 PyObject *rc = 0;
1146
bebf03ab
MW		 1147 if (gaea_check(me)) goto end;
1148 if (GAEADAAD_F(me)&AEADF_AADNDEP)
1149 VALERR("can't duplicate nonce-dependent aad");
2a448f86 1150 rc = gaeadaad_pywrap((PyObject *)Py_TYPE(me),
bebf03ab 1151 GAEAD_DUP(GAEADAAD_A(me)), 0, 0);
de7abe02 1152 GAEADAAD_HLEN(rc) = GAEADAAD_HLEN(me);
bebf03ab
MW		 1153end:
1154 return (rc);
1155}
1156
1157static int gaeadaad_hash(PyObject *me, const void *h, size_t hsz)
1158{
1159 gaeadaad_pyobj *ga = (gaeadaad_pyobj *)me;
1160 int rc = -1;
1161
1162 if (gaea_check(me)) goto end;
1163 if ((ga->f&AEADF_NOAAD) && hsz)
1164 VALERR("header data not permitted");
1165 if ((ga->f&AEADF_PCHSZ) && hsz > ga->hsz - ga->hlen)
1166 VALERR("too large for precommitted header length");
1167 GAEAD_HASH(ga->a, h, hsz); ga->hlen += hsz;
1168 rc = 0;
1169end:
1170 return (rc);
1171}
1172
bebf03ab
MW		 1173static PyObject *gaeameth_hash(PyObject *me, PyObject *arg)
1174{
67c75893 1175 struct bin h;
bebf03ab 1176
67c75893
MW		 1177 if (!PyArg_ParseTuple(arg, "O&:hash", convbin, &h)) return (0);
1178 if (gaeadaad_hash(me, h.p, h.sz)) return (0);
bebf03ab
MW		 1179 RETURN_ME;
1180}
1181
1182#define GAEAMETH_HASHU_(n, W, w) \
1183 static PyObject *gaeameth_hashu##w(PyObject *me, PyObject *arg) \
1184 { \
1185 uint##n x; octet b[SZ_##W]; \
1186 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
1187 STORE##W(b, x); if (gaeadaad_hash(me, b, sizeof(b))) return (0); \
1188 RETURN_ME; \
1189 }
1190DOUINTCONV(GAEAMETH_HASHU_)
1191
1192#define GAEAMETH_HASHBUF_(n, W, w) \
1193 static PyObject *gaeameth_hashbuf##w(PyObject *me, PyObject *arg) \
1194 { \
67c75893
MW		 1195 struct bin in; octet b[SZ_##W]; \
1196 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
e01ab3c9 1197 if (in.sz > MASK##n) VALERR("too large"); \
67c75893
MW		 1198 STORE##W(b, in.sz); if (gaeadaad_hash(me, b, sizeof(b))) goto end; \
1199 if (gaeadaad_hash(me, in.p, in.sz)) goto end; \
bebf03ab
MW		 1200 RETURN_ME; \
1201 end: \
1202 return (0); \
1203 }
1204DOUINTCONV(GAEAMETH_HASHBUF_)
1205
1206static PyObject *gaeameth_hashstrz(PyObject *me, PyObject *arg)
1207{
1208 char *p;
1209 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
1210 if (gaeadaad_hash(me, p, strlen(p) + 1)) return (0);
1211 RETURN_ME;
1212}
1213
c90f712e 1214static const PyMethodDef gaeadaad_pymethods[] = {
bebf03ab 1215#define METHNAME(name) gaeameth_##name
91e56f06 1216 NAMETH(copy, "AAD.copy() -> AAD'")
d96c882e 1217 METH (hash, "AAD.hash(H)")
bebf03ab
MW		 1218#define METHU_(n, W, w) METH(hashu##w, "AAD.hashu" #w "(WORD)")
1219 DOUINTCONV(METHU_)
1220#undef METHU_
1221#define METHBUF_(n, W, w) METH(hashbuf##w, "AAD.hashbuf" #w "(BYTES)")
1222 DOUINTCONV(METHBUF_)
1223#undef METHBUF_
d96c882e 1224 METH (hashstrz, "AAD.hashstrz(STRING)")
bebf03ab
MW		 1225#undef METHNAME
1226 { 0 }
1227};
1228
c6e89d48
MW		 1229static PyObject *gaeadenc_pywrap(PyObject *cobj, gaead_enc *e, unsigned f,
1230 size_t hsz, size_t msz, size_t tsz)
bebf03ab
MW		 1231{
1232 gaeadenc_pyobj *ge;
1233
1234 assert(cobj); Py_INCREF(cobj);
1235 ge = PyObject_NEW(gaeadenc_pyobj, (PyTypeObject *)cobj);
1236 ge->e = e; ge->f = f; ge->hsz = hsz; ge->msz = msz; ge->tsz = tsz;
1237 ge->aad = 0; ge->mlen = 0;
1238 return ((PyObject *)ge);
1239}
1240
1241static void gaeadenc_pydealloc(PyObject *me)
1242{
1243 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
1244
1245 gaea_sever(&ge->aad); GAEAD_DESTROY(ge->e);
2a448f86 1246 Py_DECREF(Py_TYPE(me)); FREEOBJ(me);
bebf03ab
MW		 1247}
1248
1249static PyObject *gaeeget_hsz(PyObject *me, void *hunoz)
1250{
1251 if (GAEADENC_F(me)&AEADF_PCHSZ) return getulong(GAEADENC_HSZ(me));
1252 else RETURN_NONE;
1253}
1254
1255static PyObject *gaeeget_msz(PyObject *me, void *hunoz)
1256{
1257 if (GAEADENC_F(me)&AEADF_PCMSZ) return getulong(GAEADENC_MSZ(me));
1258 else RETURN_NONE;
1259}
1260
1261static PyObject *gaeeget_tsz(PyObject *me, void *hunoz)
1262{
1263 if (GAEADENC_F(me)&AEADF_PCTSZ) return getulong(GAEADENC_TSZ(me));
1264 else RETURN_NONE;
1265}
1266
1267static PyObject *gaeeget_mlen(PyObject *me, void *hunoz)
1268 { return getulong(GAEADENC_MLEN(me)); }
1269
c90f712e 1270static const PyGetSetDef gaeadenc_pygetset[] = {
bebf03ab 1271#define GETSETNAME(op, name) gaee##op##_##name
d96c882e
MW		 1272 GET (hsz, "ENC.hsz -> precommitted header length or `None'")
1273 GET (msz, "ENC.msz -> precommitted message length or `None'")
1274 GET (tsz, "ENC.tsz -> precommitted tag length or `None'")
1275 GET (mlen, "ENC.mlen -> message length so far")
bebf03ab
MW		 1276#undef GETSETNAME
1277 { 0 }
1278};
1279
91e56f06 1280static PyObject *gaeemeth_aad(PyObject *me)
bebf03ab
MW		 1281{
1282 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
1283 PyObject *rc = 0;
1284
bebf03ab 1285 if (!(ge->f&AEADF_AADNDEP))
2a448f86 1286 rc = gaeadaad_pywrap((PyObject *)GCAEADENC_KEY(Py_TYPE(ge))->aad,
bebf03ab
MW		 1287 GAEAD_AAD(ge->e), 0, 0);
1288 else {
1289 if ((ge->f&AEADF_AADFIRST) && ge->mlen)
1290 VALERR("too late for aad");
1291 if (!ge->aad)
1292 ge->aad = (gaeadaad_pyobj *)
2a448f86 1293 gaeadaad_pywrap((PyObject *)GCAEADENC_KEY(Py_TYPE(ge))->aad,
f77c6b68
MW		 1294 GAEAD_AAD(ge->e), ge->f&(AEADF_PCHSZ | AEADF_NOAAD),
1295 ge->hsz);
bebf03ab
MW		 1296 Py_INCREF(ge->aad);
1297 rc = (PyObject *)ge->aad;
1298 }
1299end:
1300 return (rc);
1301}
1302
1303static PyObject *gaeemeth_reinit(PyObject *me, PyObject *arg, PyObject *kw)
1304{
1305 static const char *const kwlist[] = { "nonce", "hsz", "msz", "tsz", 0 };
1306 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
67c75893 1307 struct bin n;
bebf03ab
MW		 1308 PyObject *hszobj = Py_None, *mszobj = Py_None, *tszobj = Py_None;
1309 size_t hsz = 0, msz = 0, tsz = 0;
1310 unsigned f;
1311
67c75893
MW		 1312 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|OOO:enc", KWLIST,
1313 convbin, &n, &hszobj, &mszobj, &tszobj))
bebf03ab 1314 goto end;
67c75893 1315 if (check_aead_encdec(ge->e->ops->c, &f, n.sz,
bebf03ab
MW		 1316 hszobj, &hsz, mszobj, &msz, tszobj, &tsz))
1317 goto end;
67c75893 1318 if (GAEAD_REINIT(ge->e, n.p, n.sz, hsz, msz, tsz))
bebf03ab
MW		 1319 VALERR("bad aead parameter combination");
1320 gaea_sever(&ge->aad);
1321 ge->f = f; ge->hsz = hsz; ge->msz = msz; ge->tsz = tsz;
1322end:
1323 return (0);
1324}
1325
1326static PyObject *gaeemeth_encrypt(PyObject *me, PyObject *arg)
1327{
1328 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
67c75893 1329 struct bin m;
bebf03ab
MW		 1330 char *c = 0; size_t csz; buf b;
1331 int err;
1332 PyObject *rc = 0;
1333
67c75893 1334 if (!PyArg_ParseTuple(arg, "O&:encrypt", convbin, &m)) goto end;
bebf03ab
MW		 1335 if (ge->f&AEADF_AADFIRST) {
1336 if ((ge->f&AEADF_PCHSZ) && (ge->aad ? ge->aad->hlen : 0) != ge->hsz)
1337 VALERR("header doesn't match precommitted length");
1338 gaea_invalidate(ge->aad);
1339 }
67c75893 1340 if ((ge->f&AEADF_PCMSZ) && m.sz > ge->msz - ge->mlen)
bebf03ab 1341 VALERR("too large for precommitted message length");
67c75893
MW		 1342 csz = m.sz + ge->e->ops->c->bufsz; c = xmalloc(csz); buf_init(&b, c, csz);
1343 err = GAEAD_ENCRYPT(ge->e, m.p, m.sz, &b); assert(!err); (void)err;
1344 buf_flip(&b); rc = bytestring_pywrapbuf(&b); ge->mlen += m.sz;
bebf03ab
MW		 1345end:
1346 xfree(c);
1347 return (rc);
1348}
1349
1350static PyObject *gaeemeth_done(PyObject *me, PyObject *arg, PyObject *kw)
1351{
1352 static const char *const kwlist[] = { "tsz", "aad", 0 };
1353 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
1354 PyObject *aad = Py_None;
1355 char *c = 0; size_t csz; buf b;
1356 PyObject *tszobj = Py_None; PyObject *tag; size_t tsz;
1357 int err;
1358 PyObject *rc = 0;
1359
1360 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|OO:done", KWLIST,
1361 &tszobj, &aad))
1362 goto end;
1363 if (tszobj != Py_None && !convszt(tszobj, &tsz)) goto end;
1364 if (aad != Py_None &&
1365 !PyObject_TypeCheck(aad,
2a448f86 1366 (PyTypeObject *)GCAEADENC_KEY(Py_TYPE(me))->aad))
bebf03ab
MW		 1367 TYERR("wanted aad");
1368 if ((ge->f&AEADF_AADNDEP) && aad != Py_None && aad != (PyObject *)ge->aad)
1369 VALERR("mismatched aad");
1370 if ((ge->f&AEADF_PCHSZ) &&
1371 (aad == Py_None ? 0 : GAEADAAD_HLEN(aad)) != ge->hsz)
1372 VALERR("header doesn't match precommitted length");
1373 if ((ge->f&AEADF_PCMSZ) && ge->mlen != ge->msz)
1374 VALERR("message doesn't match precommitted length");
1375 if (tszobj == Py_None) {
1376 if (ge->f&AEADF_PCTSZ) tsz = ge->tsz;
1377 else tsz = keysz(0, ge->e->ops->c->tagsz);
1378 } else {
1379 if ((ge->f&AEADF_PCTSZ) && tsz != ge->tsz)
1380 VALERR("tag length doesn't match precommitted value");
1381 if (keysz(tsz, ge->e->ops->c->tagsz) != tsz) VALERR("bad tag length");
1382 }
1383 csz = ge->e->ops->c->bufsz; c = xmalloc(csz); buf_init(&b, c, csz);
1384 tag = bytestring_pywrap(0, tsz);
1385 err = GAEAD_DONE(ge->e, aad == Py_None ? 0 : GAEADAAD_A(aad), &b,
2135a6d3 1386 BIN_PTR(tag), tsz);
bebf03ab
MW		 1387 assert(!err); (void)err;
1388 buf_flip(&b); rc = Py_BuildValue("NN", bytestring_pywrapbuf(&b), tag);
1389end:
1390 xfree(c);
1391 return (rc);
1392}
1393
c90f712e 1394static const PyMethodDef gaeadenc_pymethods[] = {
bebf03ab 1395#define METHNAME(name) gaeemeth_##name
91e56f06 1396 NAMETH(aad, "ENC.aad() -> AAD")
d96c882e
MW		 1397 KWMETH(reinit, "ENC.reinit(NONCE, [hsz], [msz], [tsz])")
1398 METH (encrypt, "ENC.encrypt(MSG) -> CT")
1399 KWMETH(done, "ENC.done([tsz], [aad]) -> CT, TAG")
bebf03ab
MW		 1400#undef METHNAME
1401 { 0 }
1402};
1403
c6e89d48
MW		 1404static PyObject *gaeaddec_pywrap(PyObject *cobj, gaead_dec *d, unsigned f,
1405 size_t hsz, size_t csz, size_t tsz)
bebf03ab
MW		 1406{
1407 gaeaddec_pyobj *gd;
1408 assert(cobj); Py_INCREF(cobj);
1409 gd = PyObject_NEW(gaeaddec_pyobj, (PyTypeObject *)cobj);
1410 gd->d = d; gd->f = f; gd->hsz = hsz; gd->csz = csz; gd->tsz = tsz;
1411 gd->aad = 0; gd->clen = 0;
1412 return ((PyObject *)gd);
1413}
1414
1415static void gaeaddec_pydealloc(PyObject *me)
1416{
1417 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
1418
1419 gaea_sever(&gd->aad); GAEAD_DESTROY(GAEADDEC_D(me));
2a448f86 1420 Py_DECREF(Py_TYPE(me)); FREEOBJ(me);
bebf03ab
MW		 1421}
1422
1423static PyObject *gaedget_hsz(PyObject *me, void *hunoz)
1424{
1425 if (GAEADDEC_F(me)&AEADF_PCHSZ) return getulong(GAEADDEC_HSZ(me));
1426 else RETURN_NONE;
1427}
1428
1429static PyObject *gaedget_csz(PyObject *me, void *hunoz)
1430{
1431 if (GAEADDEC_F(me)&AEADF_PCMSZ) return getulong(GAEADDEC_CSZ(me));
1432 else RETURN_NONE;
1433}
1434
1435static PyObject *gaedget_tsz(PyObject *me, void *hunoz)
1436{
1437 if (GAEADDEC_F(me)&AEADF_PCTSZ) return getulong(GAEADDEC_TSZ(me));
1438 else RETURN_NONE;
1439}
1440
1441static PyObject *gaedget_clen(PyObject *me, void *hunoz)
1442 { return getulong(GAEADDEC_CLEN(me)); }
1443
c90f712e 1444static const PyGetSetDef gaeaddec_pygetset[] = {
bebf03ab 1445#define GETSETNAME(op, name) gaed##op##_##name
d96c882e
MW		 1446 GET (hsz, "DEC.hsz -> precommitted header length or `None'")
1447 GET (csz, "DEC.csz -> precommitted ciphertext length or `None'")
1448 GET (tsz, "DEC.tsz -> precommitted tag length or `None'")
1449 GET (clen, "DEC.clen -> ciphertext length so far")
bebf03ab
MW		 1450#undef GETSETNAME
1451 { 0 }
1452};
1453
91e56f06 1454static PyObject *gaedmeth_aad(PyObject *me)
bebf03ab
MW		 1455{
1456 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
1457
bebf03ab 1458 if (!(gd->f&AEADF_AADNDEP))
2a448f86 1459 return (gaeadaad_pywrap((PyObject *)GCAEADDEC_KEY(Py_TYPE(gd))->aad,
bebf03ab
MW		 1460 GAEAD_AAD(gd->d), 0, 0));
1461 else {
1462 if (!gd->aad)
1463 gd->aad = (gaeadaad_pyobj *)
2a448f86 1464 gaeadaad_pywrap((PyObject *)GCAEADENC_KEY(Py_TYPE(gd))->aad,
f77c6b68
MW		 1465 GAEAD_AAD(gd->d), gd->f&(AEADF_PCHSZ | AEADF_NOAAD),
1466 gd->hsz);
bebf03ab
MW		 1467 Py_INCREF(gd->aad);
1468 return ((PyObject *)gd->aad);
1469 }
1470}
1471
1472static PyObject *gaedmeth_reinit(PyObject *me, PyObject *arg, PyObject *kw)
1473{
1474 static const char *const kwlist[] = { "nonce", "hsz", "csz", "tsz", 0 };
1475 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
67c75893 1476 struct bin n;
bebf03ab
MW		 1477 PyObject *hszobj = Py_None, *cszobj = Py_None, *tszobj = Py_None;
1478 size_t hsz = 0, csz = 0, tsz = 0;
1479 unsigned f;
1480
67c75893
MW		 1481 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|OOO:enc", KWLIST,
1482 convbin, &n, &hszobj, &cszobj, &tszobj))
bebf03ab 1483 goto end;
67c75893 1484 if (check_aead_encdec(gd->d->ops->c, &f, n.sz,
bebf03ab
MW		 1485 hszobj, &hsz, cszobj, &csz, tszobj, &tsz))
1486 goto end;
67c75893 1487 if (GAEAD_REINIT(gd->d, n.p, n.sz, hsz, csz, tsz))
bebf03ab
MW		 1488 VALERR("bad aead parameter combination");
1489 gaea_sever(&gd->aad);
1490 gd->f = f; gd->hsz = hsz; gd->csz = csz; gd->tsz = tsz;
1491end:
1492 return (0);
1493}
1494
1495static PyObject *gaedmeth_decrypt(PyObject *me, PyObject *arg)
1496{
1497 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
67c75893 1498 struct bin c;
bebf03ab
MW		 1499 char *m = 0; size_t msz; buf b;
1500 int err;
1501 PyObject *rc = 0;
1502
67c75893 1503 if (!PyArg_ParseTuple(arg, "O&:decrypt", convbin, &c)) goto end;
bebf03ab
MW		 1504 if (gd->f&AEADF_AADFIRST) {
1505 if ((gd->f&AEADF_PCHSZ) && (gd->aad ? gd->aad->hlen : 0) != gd->hsz)
1506 VALERR("header doesn't match precommitted length");
1507 gaea_invalidate(gd->aad);
1508 }
67c75893 1509 if ((gd->f&AEADF_PCMSZ) && c.sz > gd->csz - gd->clen)
bebf03ab 1510 VALERR("too large for precommitted message length");
67c75893
MW		 1511 msz = c.sz + gd->d->ops->c->bufsz; m = xmalloc(msz); buf_init(&b, m, msz);
1512 err = GAEAD_DECRYPT(gd->d, c.p, c.sz, &b); assert(!err); (void)err;
1513 buf_flip(&b); rc = bytestring_pywrapbuf(&b); gd->clen += c.sz;
bebf03ab
MW		 1514end:
1515 xfree(m);
1516 return (rc);
1517}
1518
1519static PyObject *gaedmeth_done(PyObject *me, PyObject *arg, PyObject *kw)
1520{
1521 static const char *const kwlist[] = { "tag", "aad", 0 };
1522 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
1523 PyObject *aad = Py_None;
67c75893 1524 struct bin t;
bebf03ab
MW		 1525 char *m = 0; size_t msz; buf b;
1526 int err;
1527 PyObject *rc = 0;
1528
67c75893
MW		 1529 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O:done", KWLIST,
1530 convbin, &t, &aad))
bebf03ab
MW		 1531 goto end;
1532 if (aad != Py_None &&
1533 !PyObject_TypeCheck(aad,
2a448f86 1534 (PyTypeObject *)GCAEADENC_KEY(Py_TYPE(me))->aad))
bebf03ab
MW		 1535 TYERR("wanted aad");
1536 if ((gd->f&AEADF_AADNDEP) && aad != Py_None && aad != (PyObject *)gd->aad)
1537 VALERR("mismatched aad");
1538 if ((gd->f&AEADF_PCHSZ) &&
1539 (aad == Py_None ? 0 : GAEADAAD_HLEN(aad)) != gd->hsz)
1540 VALERR("header doesn't match precommitted length");
1541 if ((gd->f&AEADF_PCMSZ) && gd->clen != gd->csz)
1542 VALERR("message doesn't match precommitted length");
67c75893 1543 if ((gd->f&AEADF_PCTSZ) && t.sz != gd->tsz)
bebf03ab 1544 VALERR("tag length doesn't match precommitted value");
67c75893 1545 if (keysz(t.sz, gd->d->ops->c->tagsz) != t.sz) VALERR("bad tag length");
bebf03ab 1546 msz = gd->d->ops->c->bufsz; m = xmalloc(msz); buf_init(&b, m, msz);
67c75893
MW		 1547 err = GAEAD_DONE(gd->d, aad == Py_None ? 0 : GAEADAAD_A(aad),
1548 &b, t.p, t.sz);
bebf03ab
MW		 1549 assert(err >= 0);
1550 if (!err) VALERR("decryption failed");
1551 buf_flip(&b); rc = bytestring_pywrapbuf(&b);
1552end:
1553 xfree(m);
1554 return (rc);
1555}
1556
c90f712e 1557static const PyMethodDef gaeaddec_pymethods[] = {
bebf03ab 1558#define METHNAME(name) gaedmeth_##name
91e56f06 1559 NAMETH(aad, "DEC.aad() -> AAD")
d96c882e
MW		 1560 KWMETH(reinit, "DEC.reinit(NONCE, [hsz], [csz], [tsz])")
1561 METH (decrypt, "DEC.decrypt(CT) -> MSG")
1562 KWMETH(done, "DEC.done(TAG, [aad]) -> MSG | None")
bebf03ab
MW		 1563#undef METHNAME
1564 { 0 }
1565};
1566
c263b05c 1567static const PyTypeObject gcaead_pytype_skel = {
591bf41b 1568 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1569 "GCAEAD", /* @tp_name@ */
1570 sizeof(gcaead_pyobj), /* @tp_basicsize@ */
1571 0, /* @tp_itemsize@ */
1572
1573 0, /* @tp_dealloc@ */
1574 0, /* @tp_print@ */
1575 0, /* @tp_getattr@ */
1576 0, /* @tp_setattr@ */
1577 0, /* @tp_compare@ */
1578 0, /* @tp_repr@ */
1579 0, /* @tp_as_number@ */
1580 0, /* @tp_as_sequence@ */
1581 0, /* @tp_as_mapping@ */
1582 0, /* @tp_hash@ */
1583 0, /* @tp_call@ */
1584 0, /* @tp_str@ */
1585 0, /* @tp_getattro@ */
1586 0, /* @tp_setattro@ */
1587 0, /* @tp_as_buffer@ */
1588 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1589 Py_TPFLAGS_BASETYPE,
1590
1591 /* @tp_doc@ */
d96c882e 1592 "Authenticated encryption (key) metaclass.",
bebf03ab
MW		 1593
1594 0, /* @tp_traverse@ */
1595 0, /* @tp_clear@ */
1596 0, /* @tp_richcompare@ */
1597 0, /* @tp_weaklistoffset@ */
1598 0, /* @tp_iter@ */
1599 0, /* @tp_iternext@ */
1600 0, /* @tp_methods@ */
1601 0, /* @tp_members@ */
c90f712e 1602 PYGETSET(gcaead), /* @tp_getset@ */
bebf03ab
MW		 1603 0, /* @tp_base@ */
1604 0, /* @tp_dict@ */
1605 0, /* @tp_descr_get@ */
1606 0, /* @tp_descr_set@ */
1607 0, /* @tp_dictoffset@ */
1608 0, /* @tp_init@ */
1609 PyType_GenericAlloc, /* @tp_alloc@ */
1610 abstract_pynew, /* @tp_new@ */
1611 0, /* @tp_free@ */
1612 0 /* @tp_is_gc@ */
1613};
1614
c263b05c 1615static const PyTypeObject gaeadkey_pytype_skel = {
591bf41b 1616 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1617 "GAEKey", /* @tp_name@ */
1618 sizeof(gaeadkey_pyobj), /* @tp_basicsize@ */
1619 0, /* @tp_itemsize@ */
1620
1621 gaeadkey_pydealloc, /* @tp_dealloc@ */
1622 0, /* @tp_print@ */
1623 0, /* @tp_getattr@ */
1624 0, /* @tp_setattr@ */
1625 0, /* @tp_compare@ */
1626 0, /* @tp_repr@ */
1627 0, /* @tp_as_number@ */
1628 0, /* @tp_as_sequence@ */
1629 0, /* @tp_as_mapping@ */
1630 0, /* @tp_hash@ */
1631 0, /* @tp_call@ */
1632 0, /* @tp_str@ */
1633 0, /* @tp_getattro@ */
1634 0, /* @tp_setattro@ */
1635 0, /* @tp_as_buffer@ */
1636 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1637 Py_TPFLAGS_BASETYPE,
1638
1639 /* @tp_doc@ */
d96c882e 1640 "Authenticated encryption key.",
bebf03ab
MW		 1641
1642 0, /* @tp_traverse@ */
1643 0, /* @tp_clear@ */
1644 0, /* @tp_richcompare@ */
1645 0, /* @tp_weaklistoffset@ */
1646 0, /* @tp_iter@ */
1647 0, /* @tp_iternext@ */
c90f712e 1648 PYMETHODS(gaeadkey), /* @tp_methods@ */
bebf03ab
MW		 1649 0, /* @tp_members@ */
1650 0, /* @tp_getset@ */
1651 0, /* @tp_base@ */
1652 0, /* @tp_dict@ */
1653 0, /* @tp_descr_get@ */
1654 0, /* @tp_descr_set@ */
1655 0, /* @tp_dictoffset@ */
1656 0, /* @tp_init@ */
1657 PyType_GenericAlloc, /* @tp_alloc@ */
1658 abstract_pynew, /* @tp_new@ */
1659 0, /* @tp_free@ */
1660 0 /* @tp_is_gc@ */
1661};
1662
c263b05c 1663static const PyTypeObject gcaeadaad_pytype_skel = {
591bf41b 1664 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1665 "GAEAADClass", /* @tp_name@ */
1666 sizeof(gcaeadaad_pyobj), /* @tp_basicsize@ */
1667 0, /* @tp_itemsize@ */
1668
1669 0, /* @tp_dealloc@ */
1670 0, /* @tp_print@ */
1671 0, /* @tp_getattr@ */
1672 0, /* @tp_setattr@ */
1673 0, /* @tp_compare@ */
1674 0, /* @tp_repr@ */
1675 0, /* @tp_as_number@ */
1676 0, /* @tp_as_sequence@ */
1677 0, /* @tp_as_mapping@ */
1678 0, /* @tp_hash@ */
1679 0, /* @tp_call@ */
1680 0, /* @tp_str@ */
1681 0, /* @tp_getattro@ */
1682 0, /* @tp_setattro@ */
1683 0, /* @tp_as_buffer@ */
1684 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1685 Py_TPFLAGS_BASETYPE,
1686
1687 /* @tp_doc@ */
d96c882e 1688 "Authenticated encryption additional-data hash metaclass.",
bebf03ab
MW		 1689
1690 0, /* @tp_traverse@ */
1691 0, /* @tp_clear@ */
1692 0, /* @tp_richcompare@ */
1693 0, /* @tp_weaklistoffset@ */
1694 0, /* @tp_iter@ */
1695 0, /* @tp_iternext@ */
1696 0, /* @tp_methods@ */
1697 0, /* @tp_members@ */
1698 0, /* @tp_getset@ */
1699 0, /* @tp_base@ */
1700 0, /* @tp_dict@ */
1701 0, /* @tp_descr_get@ */
1702 0, /* @tp_descr_set@ */
1703 0, /* @tp_dictoffset@ */
1704 0, /* @tp_init@ */
1705 PyType_GenericAlloc, /* @tp_alloc@ */
1706 abstract_pynew, /* @tp_new@ */
1707 0, /* @tp_free@ */
1708 0 /* @tp_is_gc@ */
1709};
1710
c263b05c 1711static const PyTypeObject gaeadaad_pytype_skel = {
591bf41b 1712 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1713 "GAEAAD", /* @tp_name@ */
1714 sizeof(gaeadaad_pyobj), /* @tp_basicsize@ */
1715 0, /* @tp_itemsize@ */
1716
1717 gaeadaad_pydealloc, /* @tp_dealloc@ */
1718 0, /* @tp_print@ */
1719 0, /* @tp_getattr@ */
1720 0, /* @tp_setattr@ */
1721 0, /* @tp_compare@ */
1722 0, /* @tp_repr@ */
1723 0, /* @tp_as_number@ */
1724 0, /* @tp_as_sequence@ */
1725 0, /* @tp_as_mapping@ */
1726 0, /* @tp_hash@ */
1727 0, /* @tp_call@ */
1728 0, /* @tp_str@ */
1729 0, /* @tp_getattro@ */
1730 0, /* @tp_setattro@ */
1731 0, /* @tp_as_buffer@ */
1732 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1733 Py_TPFLAGS_BASETYPE,
1734
1735 /* @tp_doc@ */
d96c882e 1736 "Authenticated encryption AAD hash.",
bebf03ab
MW		 1737
1738 0, /* @tp_traverse@ */
1739 0, /* @tp_clear@ */
1740 0, /* @tp_richcompare@ */
1741 0, /* @tp_weaklistoffset@ */
1742 0, /* @tp_iter@ */
1743 0, /* @tp_iternext@ */
c90f712e 1744 PYMETHODS(gaeadaad), /* @tp_methods@ */
bebf03ab 1745 0, /* @tp_members@ */
c90f712e 1746 PYGETSET(gaeadaad), /* @tp_getset@ */
bebf03ab
MW		 1747 0, /* @tp_base@ */
1748 0, /* @tp_dict@ */
1749 0, /* @tp_descr_get@ */
1750 0, /* @tp_descr_set@ */
1751 0, /* @tp_dictoffset@ */
1752 0, /* @tp_init@ */
1753 PyType_GenericAlloc, /* @tp_alloc@ */
1754 abstract_pynew, /* @tp_new@ */
1755 0, /* @tp_free@ */
1756 0 /* @tp_is_gc@ */
1757};
1758
c263b05c 1759static const PyTypeObject gcaeadenc_pytype_skel = {
591bf41b 1760 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1761 "GAEEncClass", /* @tp_name@ */
1762 sizeof(gcaeadenc_pyobj), /* @tp_basicsize@ */
1763 0, /* @tp_itemsize@ */
1764
1765 0, /* @tp_dealloc@ */
1766 0, /* @tp_print@ */
1767 0, /* @tp_getattr@ */
1768 0, /* @tp_setattr@ */
1769 0, /* @tp_compare@ */
1770 0, /* @tp_repr@ */
1771 0, /* @tp_as_number@ */
1772 0, /* @tp_as_sequence@ */
1773 0, /* @tp_as_mapping@ */
1774 0, /* @tp_hash@ */
1775 0, /* @tp_call@ */
1776 0, /* @tp_str@ */
1777 0, /* @tp_getattro@ */
1778 0, /* @tp_setattro@ */
1779 0, /* @tp_as_buffer@ */
1780 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1781 Py_TPFLAGS_BASETYPE,
1782
1783 /* @tp_doc@ */
d96c882e 1784 "Authenticated encryption operation metaclass.",
bebf03ab
MW		 1785
1786 0, /* @tp_traverse@ */
1787 0, /* @tp_clear@ */
1788 0, /* @tp_richcompare@ */
1789 0, /* @tp_weaklistoffset@ */
1790 0, /* @tp_iter@ */
1791 0, /* @tp_iternext@ */
1792 0, /* @tp_methods@ */
1793 0, /* @tp_members@ */
1794 0, /* @tp_getset@ */
1795 0, /* @tp_base@ */
1796 0, /* @tp_dict@ */
1797 0, /* @tp_descr_get@ */
1798 0, /* @tp_descr_set@ */
1799 0, /* @tp_dictoffset@ */
1800 0, /* @tp_init@ */
1801 PyType_GenericAlloc, /* @tp_alloc@ */
1802 abstract_pynew, /* @tp_new@ */
1803 0, /* @tp_free@ */
1804 0 /* @tp_is_gc@ */
1805};
1806
c263b05c 1807static const PyTypeObject gaeadenc_pytype_skel = {
591bf41b 1808 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1809 "GAEEnc", /* @tp_name@ */
1810 sizeof(gaeadenc_pyobj), /* @tp_basicsize@ */
1811 0, /* @tp_itemsize@ */
1812
1813 gaeadenc_pydealloc, /* @tp_dealloc@ */
1814 0, /* @tp_print@ */
1815 0, /* @tp_getattr@ */
1816 0, /* @tp_setattr@ */
1817 0, /* @tp_compare@ */
1818 0, /* @tp_repr@ */
1819 0, /* @tp_as_number@ */
1820 0, /* @tp_as_sequence@ */
1821 0, /* @tp_as_mapping@ */
1822 0, /* @tp_hash@ */
1823 0, /* @tp_call@ */
1824 0, /* @tp_str@ */
1825 0, /* @tp_getattro@ */
1826 0, /* @tp_setattro@ */
1827 0, /* @tp_as_buffer@ */
1828 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1829 Py_TPFLAGS_BASETYPE,
1830
1831 /* @tp_doc@ */
d96c882e 1832 "Authenticated encryption operation.",
bebf03ab
MW		 1833
1834 0, /* @tp_traverse@ */
1835 0, /* @tp_clear@ */
1836 0, /* @tp_richcompare@ */
1837 0, /* @tp_weaklistoffset@ */
1838 0, /* @tp_iter@ */
1839 0, /* @tp_iternext@ */
c90f712e 1840 PYMETHODS(gaeadenc), /* @tp_methods@ */
bebf03ab 1841 0, /* @tp_members@ */
c90f712e 1842 PYGETSET(gaeadenc), /* @tp_getset@ */
bebf03ab
MW		 1843 0, /* @tp_base@ */
1844 0, /* @tp_dict@ */
1845 0, /* @tp_descr_get@ */
1846 0, /* @tp_descr_set@ */
1847 0, /* @tp_dictoffset@ */
1848 0, /* @tp_init@ */
1849 PyType_GenericAlloc, /* @tp_alloc@ */
1850 abstract_pynew, /* @tp_new@ */
1851 0, /* @tp_free@ */
1852 0 /* @tp_is_gc@ */
1853};
1854
c263b05c 1855static const PyTypeObject gcaeaddec_pytype_skel = {
591bf41b 1856 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1857 "GAEDecClass", /* @tp_name@ */
1858 sizeof(gcaeaddec_pyobj), /* @tp_basicsize@ */
1859 0, /* @tp_itemsize@ */
1860
1861 0, /* @tp_dealloc@ */
1862 0, /* @tp_print@ */
1863 0, /* @tp_getattr@ */
1864 0, /* @tp_setattr@ */
1865 0, /* @tp_compare@ */
1866 0, /* @tp_repr@ */
1867 0, /* @tp_as_number@ */
1868 0, /* @tp_as_sequence@ */
1869 0, /* @tp_as_mapping@ */
1870 0, /* @tp_hash@ */
1871 0, /* @tp_call@ */
1872 0, /* @tp_str@ */
1873 0, /* @tp_getattro@ */
1874 0, /* @tp_setattro@ */
1875 0, /* @tp_as_buffer@ */
1876 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1877 Py_TPFLAGS_BASETYPE,
1878
1879 /* @tp_doc@ */
d96c882e 1880 "Authenticated decryption operation metaclass.",
bebf03ab
MW		 1881
1882 0, /* @tp_traverse@ */
1883 0, /* @tp_clear@ */
1884 0, /* @tp_richcompare@ */
1885 0, /* @tp_weaklistoffset@ */
1886 0, /* @tp_iter@ */
1887 0, /* @tp_iternext@ */
1888 0, /* @tp_methods@ */
1889 0, /* @tp_members@ */
1890 0, /* @tp_getset@ */
1891 0, /* @tp_base@ */
1892 0, /* @tp_dict@ */
1893 0, /* @tp_descr_get@ */
1894 0, /* @tp_descr_set@ */
1895 0, /* @tp_dictoffset@ */
1896 0, /* @tp_init@ */
1897 PyType_GenericAlloc, /* @tp_alloc@ */
1898 abstract_pynew, /* @tp_new@ */
1899 0, /* @tp_free@ */
1900 0 /* @tp_is_gc@ */
1901};
1902
c263b05c 1903static const PyTypeObject gaeaddec_pytype_skel = {
591bf41b 1904 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1905 "GAEDec", /* @tp_name@ */
1906 sizeof(gaeaddec_pyobj), /* @tp_basicsize@ */
1907 0, /* @tp_itemsize@ */
1908
1909 gaeaddec_pydealloc, /* @tp_dealloc@ */
1910 0, /* @tp_print@ */
1911 0, /* @tp_getattr@ */
1912 0, /* @tp_setattr@ */
1913 0, /* @tp_compare@ */
1914 0, /* @tp_repr@ */
1915 0, /* @tp_as_number@ */
1916 0, /* @tp_as_sequence@ */
1917 0, /* @tp_as_mapping@ */
1918 0, /* @tp_hash@ */
1919 0, /* @tp_call@ */
1920 0, /* @tp_str@ */
1921 0, /* @tp_getattro@ */
1922 0, /* @tp_setattro@ */
1923 0, /* @tp_as_buffer@ */
1924 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1925 Py_TPFLAGS_BASETYPE,
1926
1927 /* @tp_doc@ */
d96c882e 1928 "Authenticated decryption operation.",
bebf03ab
MW		 1929
1930 0, /* @tp_traverse@ */
1931 0, /* @tp_clear@ */
1932 0, /* @tp_richcompare@ */
1933 0, /* @tp_weaklistoffset@ */
1934 0, /* @tp_iter@ */
1935 0, /* @tp_iternext@ */
c90f712e 1936 PYMETHODS(gaeaddec), /* @tp_methods@ */
bebf03ab 1937 0, /* @tp_members@ */
c90f712e 1938 PYGETSET(gaeaddec), /* @tp_getset@ */
bebf03ab
MW		 1939 0, /* @tp_base@ */
1940 0, /* @tp_dict@ */
1941 0, /* @tp_descr_get@ */
1942 0, /* @tp_descr_set@ */
1943 0, /* @tp_dictoffset@ */
1944 0, /* @tp_init@ */
1945 PyType_GenericAlloc, /* @tp_alloc@ */
1946 abstract_pynew, /* @tp_new@ */
1947 0, /* @tp_free@ */
1948 0 /* @tp_is_gc@ */
1949};
1950
d7ab1bab 1951/*----- Hash functions ----------------------------------------------------*/
1952
c6e89d48
MW		 1953PyTypeObject *gchash_pytype;
1954static PyTypeObject *ghash_pytype;
1955PyObject *sha_pyobj, *has160_pyobj;
1956
1957typedef struct ghash_pyobj {
1958 PyObject_HEAD
1959 ghash *h;
1960} ghash_pyobj;
1961
1962#define GHASH_PYCHECK(o) PyObject_TypeCheck((o), ghash_pytype)
1963#define GHASH_H(o) (((ghash_pyobj *)(o))->h)
d7ab1bab 1964
1965CONVFUNC(gchash, gchash *, GCHASH_CH)
1966CONVFUNC(ghash, ghash *, GHASH_H)
1967
1968static PyObject *ghash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1969{
827f89d7
MW		 1970 static const char *const kwlist[] = { 0 };
1971 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST))
d7ab1bab 1972 goto end;
c41d0371 1973 return (ghash_pywrap((PyObject *)ty, GH_INIT(GCHASH_CH(ty))));
d7ab1bab 1974end:
b2687a0a 1975 return (0);
d7ab1bab 1976}
1977
c6e89d48 1978static PyObject *gchash_pywrap(gchash *ch)
d7ab1bab 1979{
df9f8366 1980 gchash_pyobj *g = newtype(gchash_pytype, 0, ch->name);
d7ab1bab 1981 g->ch = ch;
24b3d57b
MW		 1982 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
1983 g->ty.ht_type.tp_base = ghash_pytype;
d7ab1bab 1984 Py_INCREF(ghash_pytype);
24b3d57b
MW		 1985 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1986 Py_TPFLAGS_BASETYPE |
1987 Py_TPFLAGS_HEAPTYPE);
1988 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1989 g->ty.ht_type.tp_free = 0;
1990 g->ty.ht_type.tp_new = ghash_pynew;
dc075750 1991 typeready(&g->ty.ht_type);
d7ab1bab 1992 return ((PyObject *)g);
1993}
1994
c41d0371 1995PyObject *ghash_pywrap(PyObject *cobj, ghash *h)
d7ab1bab 1996{
1997 ghash_pyobj *g;
1998 if (!cobj) cobj = gchash_pywrap((/*unconst*/ gchash *)GH_CLASS(h));
1999 else Py_INCREF(cobj);
2000 g = PyObject_NEW(ghash_pyobj, (PyTypeObject *)cobj);
2001 g->h = h;
b2687a0a 2002 return ((PyObject *)g);
d7ab1bab 2003}
2004
2005static void ghash_pydealloc(PyObject *me)
2006{
c41d0371 2007 GH_DESTROY(GHASH_H(me));
2a448f86 2008 Py_DECREF(Py_TYPE(me));
3aa33042 2009 FREEOBJ(me);
d7ab1bab 2010}
2011
2012static PyObject *gchget_name(PyObject *me, void *hunoz)
2135a6d3 2013 { return (TEXT_FROMSTR(GCHASH_CH(me)->name)); }
d7ab1bab 2014
2015static PyObject *gchget_hashsz(PyObject *me, void *hunoz)
2016 { return (PyInt_FromLong(GCHASH_CH(me)->hashsz)); }
2017
2018static PyObject *gchget_bufsz(PyObject *me, void *hunoz)
2019 { return (PyInt_FromLong(GCHASH_CH(me)->bufsz)); }
2020
91e56f06 2021static PyObject *ghmeth_copy(PyObject *me)
2a448f86 2022 { return (ghash_pywrap((PyObject *)Py_TYPE(me), GH_COPY(GHASH_H(me)))); }
cfe80e51 2023
d7ab1bab 2024static PyObject *ghmeth_hash(PyObject *me, PyObject *arg)
2025{
67c75893
MW		 2026 struct bin m;
2027 if (!PyArg_ParseTuple(arg, "O&:hash", convbin, &m)) return (0);
2028 GH_HASH(GHASH_H(me), m.p, m.sz);
d7ab1bab 2029 RETURN_ME;
2030}
2031
46e6ad89 2032#define GHMETH_HASHU_(n, W, w) \
2033 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
2034 { \
2035 uint##n x; \
0e5c668c 2036 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
46e6ad89 2037 GH_HASHU##W(GHASH_H(me), x); \
2038 RETURN_ME; \
46e6ad89 2039 }
2040DOUINTCONV(GHMETH_HASHU_)
2041
2042#define GHMETH_HASHBUF_(n, W, w) \
2043 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
2044 { \
67c75893
MW		 2045 struct bin in; \
2046 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
e01ab3c9 2047 if (in.sz > MASK##n) VALERR("too large"); \
67c75893 2048 GH_HASHBUF##W(GHASH_H(me), in.p, in.sz); \
46e6ad89 2049 RETURN_ME; \
2050 end: \
2051 return (0); \
2052 }
2053DOUINTCONV(GHMETH_HASHBUF_)
2054
2055static PyObject *ghmeth_hashstrz(PyObject *me, PyObject *arg)
2056{
2057 char *p;
2058 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
2059 GH_HASHSTRZ(GHASH_H(me), p);
2060 RETURN_ME;
2061}
2062
91e56f06 2063static PyObject *ghmeth_done(PyObject *me)
07bcd768
MW		 2064{
2065 ghash *g;
2066 PyObject *rc;
07bcd768
MW		 2067 g = GH_COPY(GHASH_H(me));
2068 rc = bytestring_pywrap(0, g->ops->c->hashsz);
2135a6d3 2069 GH_DONE(g, BIN_PTR(rc));
07bcd768
MW		 2070 GH_DESTROY(g);
2071 return (rc);
2072}
2073
c90f712e 2074static const PyGetSetDef gchash_pygetset[] = {
07bcd768 2075#define GETSETNAME(op, name) gch##op##_##name
d96c882e
MW		 2076 GET (bufsz, "CH.bufsz -> hash buffer size, or zero")
2077 GET (hashsz, "CH.hashsz -> hash output size")
2078 GET (name, "CH.name -> name of this kind of hash")
07bcd768
MW		 2079#undef GETSETNAME
2080 { 0 }
2081};
2082
c90f712e 2083static const PyMethodDef ghash_pymethods[] = {
d7ab1bab 2084#define METHNAME(name) ghmeth_##name
91e56f06 2085 NAMETH(copy, "H.copy() -> HH")
d96c882e 2086 METH (hash, "H.hash(M)")
46e6ad89 2087#define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
2088 DOUINTCONV(METHU_)
07bcd768 2089#undef METHU_
46e6ad89 2090#define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
2091 DOUINTCONV(METHBUF_)
07bcd768 2092#undef METHBUF_
d96c882e 2093 METH (hashstrz, "H.hashstrz(STRING)")
91e56f06 2094 NAMETH(done, "H.done() -> HASH")
d7ab1bab 2095#undef METHNAME
2096 { 0 }
2097};
2098
c263b05c 2099static const PyTypeObject gchash_pytype_skel = {
591bf41b 2100 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2101 "GCHash", /* @tp_name@ */
d7ab1bab 2102 sizeof(gchash_pyobj), /* @tp_basicsize@ */
2103 0, /* @tp_itemsize@ */
2104
2105 0, /* @tp_dealloc@ */
2106 0, /* @tp_print@ */
2107 0, /* @tp_getattr@ */
2108 0, /* @tp_setattr@ */
2109 0, /* @tp_compare@ */
2110 0, /* @tp_repr@ */
2111 0, /* @tp_as_number@ */
2112 0, /* @tp_as_sequence@ */
2113 0, /* @tp_as_mapping@ */
2114 0, /* @tp_hash@ */
2115 0, /* @tp_call@ */
2116 0, /* @tp_str@ */
2117 0, /* @tp_getattro@ */
2118 0, /* @tp_setattro@ */
2119 0, /* @tp_as_buffer@ */
2120 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2121 Py_TPFLAGS_BASETYPE,
2122
2123 /* @tp_doc@ */
d96c882e 2124 "Hash function metaclass.",
d7ab1bab 2125
2126 0, /* @tp_traverse@ */
2127 0, /* @tp_clear@ */
2128 0, /* @tp_richcompare@ */
2129 0, /* @tp_weaklistoffset@ */
2130 0, /* @tp_iter@ */
963a6148 2131 0, /* @tp_iternext@ */
d7ab1bab 2132 0, /* @tp_methods@ */
2133 0, /* @tp_members@ */
c90f712e 2134 PYGETSET(gchash), /* @tp_getset@ */
d7ab1bab 2135 0, /* @tp_base@ */
2136 0, /* @tp_dict@ */
2137 0, /* @tp_descr_get@ */
2138 0, /* @tp_descr_set@ */
2139 0, /* @tp_dictoffset@ */
2140 0, /* @tp_init@ */
2141 PyType_GenericAlloc, /* @tp_alloc@ */
2142 abstract_pynew, /* @tp_new@ */
3aa33042 2143 0, /* @tp_free@ */
d7ab1bab 2144 0 /* @tp_is_gc@ */
2145};
2146
c263b05c 2147static const PyTypeObject ghash_pytype_skel = {
591bf41b 2148 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2149 "GHash", /* @tp_name@ */
d7ab1bab 2150 sizeof(ghash_pyobj), /* @tp_basicsize@ */
2151 0, /* @tp_itemsize@ */
2152
2153 ghash_pydealloc, /* @tp_dealloc@ */
2154 0, /* @tp_print@ */
2155 0, /* @tp_getattr@ */
2156 0, /* @tp_setattr@ */
2157 0, /* @tp_compare@ */
2158 0, /* @tp_repr@ */
2159 0, /* @tp_as_number@ */
2160 0, /* @tp_as_sequence@ */
2161 0, /* @tp_as_mapping@ */
2162 0, /* @tp_hash@ */
2163 0, /* @tp_call@ */
2164 0, /* @tp_str@ */
2165 0, /* @tp_getattro@ */
2166 0, /* @tp_setattro@ */
2167 0, /* @tp_as_buffer@ */
2168 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2169 Py_TPFLAGS_BASETYPE,
2170
2171 /* @tp_doc@ */
d96c882e 2172 "Hash function, abstract base class.",
d7ab1bab 2173
2174 0, /* @tp_traverse@ */
2175 0, /* @tp_clear@ */
2176 0, /* @tp_richcompare@ */
2177 0, /* @tp_weaklistoffset@ */
2178 0, /* @tp_iter@ */
963a6148 2179 0, /* @tp_iternext@ */
c90f712e 2180 PYMETHODS(ghash), /* @tp_methods@ */
d7ab1bab 2181 0, /* @tp_members@ */
2182 0, /* @tp_getset@ */
2183 0, /* @tp_base@ */
2184 0, /* @tp_dict@ */
2185 0, /* @tp_descr_get@ */
2186 0, /* @tp_descr_set@ */
2187 0, /* @tp_dictoffset@ */
2188 0, /* @tp_init@ */
2189 PyType_GenericAlloc, /* @tp_alloc@ */
2190 abstract_pynew, /* @tp_new@ */
3aa33042 2191 0, /* @tp_free@ */
d7ab1bab 2192 0 /* @tp_is_gc@ */
2193};
2194
2195/*----- Message authentication --------------------------------------------*/
2196
c6e89d48 2197static PyTypeObject *gcmac_pytype, *gmac_pytype, *gmhash_pytype;
d7ab1bab 2198
c6e89d48
MW		 2199typedef struct gcmac_pyobj {
2200 PyHeapTypeObject ty;
2201 gcmac *cm;
2202} gcmac_pyobj;
2203
2204#define GCMAC_PYCHECK(o) PyObject_TypeCheck((o), gcmac_pytype)
2205#define GCMAC_CM(o) (((gcmac_pyobj *)(o))->cm)
2206#define GCMAC_F(o) (((gcmac_pyobj *)(o))->f)
d7ab1bab 2207CONVFUNC(gcmac, gcmac *, GCMAC_CM)
c6e89d48
MW		 2208static PyObject *gmac_pywrap(PyObject *, gmac *);
2209
2210typedef struct gmac_pyobj {
2211 PyHeapTypeObject ty;
2212 gmac *m;
2213} gmac_pyobj;
2214
2215extern PyTypeObject *gmac_pytype;
2216#define GMAC_PYCHECK(o) PyObject_TypeCheck((o), gmac_pytype)
2217#define GMAC_M(o) (((gmac_pyobj *)(o))->m)
2218#define GMAC_F(o) (((gmac_pyobj *)(o))->f)
2219extern PyObject *gmac_pywrap(PyObject *, gmac *);
2220extern int convgmac(PyObject *, void *);
d7ab1bab 2221
2222static PyObject *gmac_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
2223{
827f89d7 2224 static const char *const kwlist[] = { "k", 0 };
67c75893 2225 struct bin k;
d7ab1bab 2226
67c75893 2227 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
d7ab1bab 2228 goto end;
67c75893 2229 if (keysz(k.sz, GCMAC_CM(ty)->keysz) != k.sz) VALERR("bad key length");
d7ab1bab 2230 return (gmac_pywrap((PyObject *)ty,
67c75893 2231 GM_KEY(GCMAC_CM(ty), k.p, k.sz)));
d7ab1bab 2232end:
b2687a0a 2233 return (0);
d7ab1bab 2234}
2235
2236static PyObject *gmhash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
2237{
827f89d7 2238 static const char *const kwlist[] = { 0 };
d7ab1bab 2239 ghash_pyobj *g;
2240
827f89d7 2241 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST)) return (0);
d7ab1bab 2242 g = PyObject_NEW(ghash_pyobj, ty);
2243 g->h = GM_INIT(GMAC_M(ty));
d7ab1bab 2244 Py_INCREF(ty);
2245 return ((PyObject *)g);
2246}
2247
c6e89d48 2248static PyObject *gcmac_pywrap(gcmac *cm)
d7ab1bab 2249{
df9f8366 2250 gcmac_pyobj *g = newtype(gcmac_pytype, 0, cm->name);
d7ab1bab 2251 g->cm = cm;
24b3d57b
MW		 2252 g->ty.ht_type.tp_basicsize = sizeof(gmac_pyobj);
2253 g->ty.ht_type.tp_base = gmac_pytype;
d7ab1bab 2254 Py_INCREF(gmac_pytype);
24b3d57b
MW		 2255 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2256 Py_TPFLAGS_BASETYPE |
2257 Py_TPFLAGS_HEAPTYPE);
2258 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2259 g->ty.ht_type.tp_free = 0;
2260 g->ty.ht_type.tp_new = gmac_pynew;
dc075750 2261 typeready(&g->ty.ht_type);
d7ab1bab 2262 return ((PyObject *)g);
2263}
2264
c6e89d48 2265static PyObject *gmac_pywrap(PyObject *cobj, gmac *m)
d7ab1bab 2266{
2267 gmac_pyobj *g;
2268 if (!cobj) cobj = gcmac_pywrap((/*unconst*/ gcmac *)GM_CLASS(m));
2269 else Py_INCREF(cobj);
df9f8366 2270 g = newtype((PyTypeObject *)cobj, 0, 0);
828b1388 2271 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
2135a6d3
MW		 2272 g->ty.ht_name = TEXT_FORMAT("%s(keyed)", m->ops->c->name);
2273 g->ty.ht_type.tp_name = TEXT_PTR(g->ty.ht_name);
24b3d57b 2274 g->ty.ht_type.tp_base = gmhash_pytype;
d7ab1bab 2275 Py_INCREF(gmac_pytype);
24b3d57b
MW		 2276 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2277 Py_TPFLAGS_BASETYPE |
2278 Py_TPFLAGS_HEAPTYPE);
2279 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2280 g->ty.ht_type.tp_free = 0;
2281 g->ty.ht_type.tp_new = gmhash_pynew;
dc075750 2282 typeready(&g->ty.ht_type);
d7ab1bab 2283 g->m = m;
b2687a0a 2284 return ((PyObject *)g);
d7ab1bab 2285}
2286
2287static void gmac_pydealloc(PyObject *me)
2288{
c41d0371 2289 GM_DESTROY(GMAC_M(me));
2a448f86 2290 Py_DECREF(Py_TYPE(me));
d7ab1bab 2291 PyType_Type.tp_dealloc(me);
2292}
2293
2294static PyObject *gcmget_name(PyObject *me, void *hunoz)
2135a6d3 2295 { return (TEXT_FROMSTR(GCMAC_CM(me)->name)); }
d7ab1bab 2296
2297static PyObject *gcmget_keysz(PyObject *me, void *hunoz)
2298 { return (keysz_pywrap(GCMAC_CM(me)->keysz)); }
2299
2300static PyObject *gcmget_tagsz(PyObject *me, void *hunoz)
2301 { return (PyInt_FromLong(GCMAC_CM(me)->hashsz)); }
2302
c90f712e 2303static const PyGetSetDef gcmac_pygetset[] = {
d7ab1bab 2304#define GETSETNAME(op, name) gcm##op##_##name
d96c882e
MW		 2305 GET (keysz, "CM.keysz -> acceptable key sizes")
2306 GET (tagsz, "CM.tagsz -> MAC output size")
2307 GET (name, "CM.name -> name of this kind of MAC")
d7ab1bab 2308#undef GETSETNAME
2309 { 0 }
2310};
2311
71574cba
MW		 2312static PyObject *gmget_name(PyObject *me, void *hunoz)
2313 { return (TEXT_FROMSTR(GMAC_M(me)->ops->c->name)); }
2314
2315static PyObject *gmget_hashsz(PyObject *me, void *hunoz)
2316 { return (PyInt_FromLong(GMAC_M(me)->ops->c->hashsz)); }
2317#define gmget_tagsz gmget_hashsz
2318
2319static const PyGetSetDef gmac_pygetset[] = {
2320#define GETSETNAME(op, name) gm##op##_##name
2321 GET (hashsz, "M.hashsz -> MAC output size")
2322 GET (tagsz, "M.tagsz -> MAC output size")
2323 GET (name, "M.name -> name of this kind of MAC")
2324#undef GETSETNAME
2325 { 0 }
2326};
2327
c263b05c 2328static const PyTypeObject gcmac_pytype_skel = {
591bf41b 2329 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2330 "GCMAC", /* @tp_name@ */
d7ab1bab 2331 sizeof(gchash_pyobj), /* @tp_basicsize@ */
2332 0, /* @tp_itemsize@ */
2333
2334 0, /* @tp_dealloc@ */
2335 0, /* @tp_print@ */
2336 0, /* @tp_getattr@ */
2337 0, /* @tp_setattr@ */
2338 0, /* @tp_compare@ */
2339 0, /* @tp_repr@ */
2340 0, /* @tp_as_number@ */
2341 0, /* @tp_as_sequence@ */
2342 0, /* @tp_as_mapping@ */
2343 0, /* @tp_hash@ */
2344 0, /* @tp_call@ */
2345 0, /* @tp_str@ */
2346 0, /* @tp_getattro@ */
2347 0, /* @tp_setattro@ */
2348 0, /* @tp_as_buffer@ */
2349 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2350 Py_TPFLAGS_BASETYPE,
2351
2352 /* @tp_doc@ */
d96c882e 2353 "Message authentication code metametaclass.",
d7ab1bab 2354
2355 0, /* @tp_traverse@ */
2356 0, /* @tp_clear@ */
2357 0, /* @tp_richcompare@ */
2358 0, /* @tp_weaklistoffset@ */
2359 0, /* @tp_iter@ */
963a6148 2360 0, /* @tp_iternext@ */
d7ab1bab 2361 0, /* @tp_methods@ */
2362 0, /* @tp_members@ */
c90f712e 2363 PYGETSET(gcmac), /* @tp_getset@ */
d7ab1bab 2364 0, /* @tp_base@ */
2365 0, /* @tp_dict@ */
2366 0, /* @tp_descr_get@ */
2367 0, /* @tp_descr_set@ */
2368 0, /* @tp_dictoffset@ */
2369 0, /* @tp_init@ */
2370 PyType_GenericAlloc, /* @tp_alloc@ */
2371 abstract_pynew, /* @tp_new@ */
3aa33042 2372 0, /* @tp_free@ */
d7ab1bab 2373 0 /* @tp_is_gc@ */
2374};
2375
c263b05c 2376static const PyTypeObject gmac_pytype_skel = {
591bf41b 2377 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2378 "GMAC", /* @tp_name@ */
d7ab1bab 2379 sizeof(gmac_pyobj), /* @tp_basicsize@ */
2380 0, /* @tp_itemsize@ */
2381
2382 gmac_pydealloc, /* @tp_dealloc@ */
2383 0, /* @tp_print@ */
2384 0, /* @tp_getattr@ */
2385 0, /* @tp_setattr@ */
2386 0, /* @tp_compare@ */
2387 0, /* @tp_repr@ */
2388 0, /* @tp_as_number@ */
2389 0, /* @tp_as_sequence@ */
2390 0, /* @tp_as_mapping@ */
2391 0, /* @tp_hash@ */
2392 0, /* @tp_call@ */
2393 0, /* @tp_str@ */
2394 0, /* @tp_getattro@ */
2395 0, /* @tp_setattro@ */
2396 0, /* @tp_as_buffer@ */
2397 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2398 Py_TPFLAGS_BASETYPE,
2399
2400 /* @tp_doc@ */
d96c882e 2401 "Message authentication code metaclass, abstract base class.",
d7ab1bab 2402
2403 0, /* @tp_traverse@ */
2404 0, /* @tp_clear@ */
2405 0, /* @tp_richcompare@ */
2406 0, /* @tp_weaklistoffset@ */
2407 0, /* @tp_iter@ */
963a6148 2408 0, /* @tp_iternext@ */
d7ab1bab 2409 0, /* @tp_methods@ */
2410 0, /* @tp_members@ */
71574cba 2411 PYGETSET(gmac), /* @tp_getset@ */
d7ab1bab 2412 0, /* @tp_base@ */
2413 0, /* @tp_dict@ */
2414 0, /* @tp_descr_get@ */
2415 0, /* @tp_descr_set@ */
2416 0, /* @tp_dictoffset@ */
2417 0, /* @tp_init@ */
2418 PyType_GenericAlloc, /* @tp_alloc@ */
2419 abstract_pynew, /* @tp_new@ */
3aa33042 2420 0, /* @tp_free@ */
d7ab1bab 2421 0 /* @tp_is_gc@ */
2422};
2423
c263b05c 2424static const PyTypeObject gmhash_pytype_skel = {
591bf41b 2425 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2426 "GMACHash", /* @tp_name@ */
d7ab1bab 2427 sizeof(ghash_pyobj), /* @tp_basicsize@ */
2428 0, /* @tp_itemsize@ */
2429
2430 ghash_pydealloc, /* @tp_dealloc@ */
2431 0, /* @tp_print@ */
2432 0, /* @tp_getattr@ */
2433 0, /* @tp_setattr@ */
2434 0, /* @tp_compare@ */
2435 0, /* @tp_repr@ */
2436 0, /* @tp_as_number@ */
2437 0, /* @tp_as_sequence@ */
2438 0, /* @tp_as_mapping@ */
2439 0, /* @tp_hash@ */
2440 0, /* @tp_call@ */
2441 0, /* @tp_str@ */
2442 0, /* @tp_getattro@ */
2443 0, /* @tp_setattro@ */
2444 0, /* @tp_as_buffer@ */
2445 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2446 Py_TPFLAGS_BASETYPE,
2447
2448 /* @tp_doc@ */
d96c882e 2449 "Message authentication code, abstract base class.",
d7ab1bab 2450
2451 0, /* @tp_traverse@ */
2452 0, /* @tp_clear@ */
2453 0, /* @tp_richcompare@ */
2454 0, /* @tp_weaklistoffset@ */
2455 0, /* @tp_iter@ */
963a6148 2456 0, /* @tp_iternext@ */
d7ab1bab 2457 0, /* @tp_methods@ */
2458 0, /* @tp_members@ */
2459 0, /* @tp_getset@ */
2460 0, /* @tp_base@ */
2461 0, /* @tp_dict@ */
2462 0, /* @tp_descr_get@ */
2463 0, /* @tp_descr_set@ */
2464 0, /* @tp_dictoffset@ */
2465 0, /* @tp_init@ */
2466 PyType_GenericAlloc, /* @tp_alloc@ */
2467 abstract_pynew, /* @tp_new@ */
3aa33042 2468 0, /* @tp_free@ */
d7ab1bab 2469 0 /* @tp_is_gc@ */
2470};
2471
204d480b
MW		 2472/*----- Special snowflake for Poly1305 ------------------------------------*/
2473
2474PyTypeObject *poly1305cls_pytype, *poly1305key_pytype, *poly1305hash_pytype;
2475
2476typedef struct poly1305key_pyobj {
2477 PyHeapTypeObject ty;
2478 poly1305_key k;
2479} poly1305key_pyobj;
2480
2481typedef struct poly1305hash_pyobj {
2482 PyObject_HEAD
2483 unsigned f;
2484#define f_mask 1u
2485 poly1305_ctx ctx;
2486} poly1305hash_pyobj;
2487
2488#define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
2489#define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
2490CONVFUNC(poly1305hash, poly1305_ctx *, P1305_CTX)
2491
2492static PyObject *poly1305hash_pynew(PyTypeObject *ty,
2493 PyObject *arg, PyObject *kw)
2494{
827f89d7 2495 static const char *const kwlist[] = { "mask", 0 };
204d480b
MW		 2496 poly1305key_pyobj *pk = (poly1305key_pyobj *)ty;
2497 poly1305hash_pyobj *ph;
67c75893 2498 struct bin m = { 0, 0 };
204d480b 2499
67c75893 2500 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convbin, &m))
204d480b 2501 return (0);
67c75893 2502 if (m.p && m.sz != POLY1305_MASKSZ) VALERR("bad mask length");
204d480b
MW		 2503 ph = PyObject_NEW(poly1305hash_pyobj, ty);
2504 ph->f = 0;
67c75893
MW		 2505 if (m.p) ph->f |= f_mask;
2506 poly1305_macinit(&ph->ctx, &pk->k, m.p);
204d480b
MW		 2507 Py_INCREF(ty);
2508 return ((PyObject *)ph);
2509end:
2510 return (0);
2511}
2512
2513static PyObject *poly1305key_pynew(PyTypeObject *ty,
2514 PyObject *arg, PyObject *kw)
2515{
827f89d7 2516 static const char *const kwlist[] = { "k", 0 };
204d480b 2517 poly1305key_pyobj *pk;
67c75893 2518 struct bin k;
204d480b 2519
67c75893 2520 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
204d480b 2521 goto end;
67c75893 2522 if (keysz(k.sz, poly1305_keysz) != k.sz) VALERR("bad key length");
204d480b
MW		 2523
2524 pk = newtype(ty, 0, 0);
2135a6d3 2525 pk->ty.ht_name = TEXT_FROMSTR("poly1305(keyed)");
204d480b 2526 pk->ty.ht_type.tp_basicsize = sizeof(poly1305hash_pyobj);
2135a6d3 2527 pk->ty.ht_type.tp_name = TEXT_PTR(pk->ty.ht_name);
204d480b
MW		 2528 pk->ty.ht_type.tp_base = poly1305hash_pytype;
2529 Py_INCREF(poly1305key_pytype);
2530 pk->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2531 Py_TPFLAGS_BASETYPE |
2532 Py_TPFLAGS_HEAPTYPE);
2533 pk->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2534 pk->ty.ht_type.tp_free = 0;
2535 pk->ty.ht_type.tp_new = poly1305hash_pynew;
2536 typeready(&pk->ty.ht_type);
2537
67c75893 2538 poly1305_keyinit(&pk->k, k.p, k.sz);
204d480b
MW		 2539 return ((PyObject *)pk);
2540
2541end:
2542 return (0);
2543}
2544
2545static PyObject *poly1305clsget_name(PyObject *me, void *hunoz)
2135a6d3 2546 { return (TEXT_FROMSTR("poly1305")); }
204d480b
MW		 2547
2548static PyObject *poly1305clsget_keysz(PyObject *me, void *hunoz)
2549 { return (keysz_pywrap(poly1305_keysz)); }
2550
2551static PyObject *poly1305clsget_masksz(PyObject *me, void *hunoz)
2552 { return (PyInt_FromLong(POLY1305_MASKSZ)); }
2553
2554static PyObject *poly1305clsget_tagsz(PyObject *me, void *hunoz)
2555 { return (PyInt_FromLong(POLY1305_TAGSZ)); }
2556
91e56f06 2557static PyObject *polymeth_copy(PyObject *me)
204d480b
MW		 2558{
2559 poly1305hash_pyobj *ph;
2a448f86 2560 ph = PyObject_NEW(poly1305hash_pyobj, Py_TYPE(me));
204d480b 2561 poly1305_copy(&ph->ctx, P1305_CTX(me));
2a448f86 2562 Py_INCREF(Py_TYPE(me));
204d480b
MW		 2563 return ((PyObject *)ph);
2564}
2565
2566static PyObject *polymeth_hash(PyObject *me, PyObject *arg)
2567{
67c75893
MW		 2568 struct bin m;
2569 if (!PyArg_ParseTuple(arg, "O&:hash", convbin, &m)) return (0);
2570 poly1305_hash(P1305_CTX(me), m.p, m.sz);
204d480b
MW		 2571 RETURN_ME;
2572}
2573
2574#define POLYMETH_HASHU_(n, W, w) \
2575 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
2576 { \
2577 uint##n x; \
2578 octet b[SZ_##W]; \
0e5c668c 2579 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
0c87e818 2580 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
204d480b 2581 RETURN_ME; \
204d480b
MW		 2582 }
2583DOUINTCONV(POLYMETH_HASHU_)
2584
2585#define POLYMETH_HASHBUF_(n, W, w) \
2586 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
2587 { \
67c75893 2588 struct bin in; \
204d480b 2589 octet b[SZ_##W]; \
67c75893 2590 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
e01ab3c9 2591 if (in.sz > MASK##n) VALERR("too large"); \
67c75893
MW		 2592 STORE##W(b, in.sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2593 poly1305_hash(P1305_CTX(me), in.p, in.sz); \
204d480b
MW		 2594 RETURN_ME; \
2595 end: \
2596 return (0); \
2597 }
2598DOUINTCONV(POLYMETH_HASHBUF_)
2599
2600static PyObject *polymeth_hashstrz(PyObject *me, PyObject *arg)
2601{
2602 char *p;
2603 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
2604 poly1305_hash(P1305_CTX(me), p, strlen(p) + 1);
2605 RETURN_ME;
2606}
2607
91e56f06
MW		 2608static PyObject *polymeth_flush(PyObject *me)
2609 { poly1305_flush(P1305_CTX(me)); RETURN_ME; }
204d480b 2610
91e56f06
MW		 2611static PyObject *polymeth_flushzero(PyObject *me)
2612 { poly1305_flushzero(P1305_CTX(me)); RETURN_ME; }
5c17375a 2613
204d480b
MW		 2614static PyObject *polymeth_concat(PyObject *me, PyObject *arg)
2615{
2616 PyObject *pre, *suff;
2617 if (!PyArg_ParseTuple(arg, "OO:concat", &pre, &suff)) return (0);
2618 if (!PyObject_TypeCheck(pre, poly1305hash_pytype) ||
2619 !PyObject_TypeCheck(suff, poly1305hash_pytype))
2620 TYERR("wanted a poly1305hash");
2a448f86 2621 if (Py_TYPE(me) != Py_TYPE(pre) || Py_TYPE(me) != Py_TYPE(suff))
204d480b
MW		 2622 TYERR("key mismatch");
2623 if (P1305_CTX(pre)->nbuf) VALERR("prefix is not block-aligned");
2624 poly1305_concat(P1305_CTX(me), P1305_CTX(pre), P1305_CTX(suff));
2625 RETURN_ME;
2626end:
2627 return (0);
2628}
2629
91e56f06 2630static PyObject *polymeth_done(PyObject *me)
204d480b
MW		 2631{
2632 PyObject *rc;
204d480b
MW		 2633 if (!(P1305_F(me) & f_mask)) VALERR("no mask");
2634 rc = bytestring_pywrap(0, POLY1305_TAGSZ);
2135a6d3 2635 poly1305_done(P1305_CTX(me), BIN_PTR(rc));
204d480b
MW		 2636 return (rc);
2637end:
2638 return (0);
2639}
2640
c90f712e 2641static const PyGetSetDef poly1305cls_pygetset[] = {
204d480b 2642#define GETSETNAME(op, name) poly1305cls##op##_##name
d96c882e
MW		 2643 GET (keysz, "PC.keysz -> acceptable key sizes")
2644 GET (masksz, "PC.masksz -> mask size")
2645 GET (tagsz, "PC.tagsz -> MAC output size")
2646 GET (name, "PC.name -> name of this kind of MAC")
204d480b
MW		 2647#undef GETSETNAME
2648 { 0 }
2649};
2650
71574cba
MW		 2651static PyObject *poly1305get_name(PyObject *me, void *hunoz)
2652 { RETURN_OBJ(((PyHeapTypeObject *)poly1305key_pytype)->ht_name); }
2653
2654static PyObject *poly1305get_tagsz(PyObject *me, void *hunoz)
2655 { return (PyInt_FromLong(16)); }
2656
2657static const PyGetSetDef poly1305_pygetset[] = {
2658#define GETSETNAME(op, name) poly1305##op##_##name
2659 GET (tagsz, "PK.tagsz -> MAC output size")
2660 GET (name, "PK.name -> name of this kind of MAC")
2661#undef GETSETNAME
2662 { 0 }
2663};
2664
c90f712e 2665static const PyMethodDef poly1305hash_pymethods[] = {
204d480b 2666#define METHNAME(name) polymeth_##name
91e56f06 2667 NAMETH(copy, "P.copy() -> PP")
d96c882e 2668 METH (hash, "P.hash(M)")
204d480b
MW		 2669#define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
2670 DOUINTCONV(METHU_)
2671#undef METHU_
2672#define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
2673 DOUINTCONV(METHBUF_)
2674#undef METHBUF_
d96c882e 2675 METH (hashstrz, "P.hashstrz(STRING)")
91e56f06
MW		 2676 NAMETH(flush, "P.flush()")
2677 NAMETH(flushzero, "P.flushzero()")
d96c882e 2678 METH (concat, "P.concat(PREFIX, SUFFIX)")
91e56f06 2679 NAMETH(done, "P.done() -> TAG")
204d480b
MW		 2680#undef METHNAME
2681 { 0 }
2682};
2683
c263b05c 2684static const PyTypeObject poly1305cls_pytype_skel = {
591bf41b 2685 PyVarObject_HEAD_INIT(0, 0) /* Header */
2edb633e 2686 "_Poly1305Class", /* @tp_name@ */
204d480b
MW		 2687 sizeof(PyHeapTypeObject), /* @tp_basicsize@ */
2688 0, /* @tp_itemsize@ */
2689
2690 0, /* @tp_dealloc@ */
2691 0, /* @tp_print@ */
2692 0, /* @tp_getattr@ */
2693 0, /* @tp_setattr@ */
2694 0, /* @tp_compare@ */
2695 0, /* @tp_repr@ */
2696 0, /* @tp_as_number@ */
2697 0, /* @tp_as_sequence@ */
2698 0, /* @tp_as_mapping@ */
2699 0, /* @tp_hash@ */
2700 0, /* @tp_call@ */
2701 0, /* @tp_str@ */
2702 0, /* @tp_getattro@ */
2703 0, /* @tp_setattro@ */
2704 0, /* @tp_as_buffer@ */
2705 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2706 Py_TPFLAGS_BASETYPE,
2707
2708 /* @tp_doc@ */
d96c882e 2709 "Poly1305 metametaclass. Best not to ask.",
204d480b
MW		 2710
2711 0, /* @tp_traverse@ */
2712 0, /* @tp_clear@ */
2713 0, /* @tp_richcompare@ */
2714 0, /* @tp_weaklistoffset@ */
2715 0, /* @tp_iter@ */
2716 0, /* @tp_iternext@ */
2717 0, /* @tp_methods@ */
2718 0, /* @tp_members@ */
c90f712e 2719 PYGETSET(poly1305cls), /* @tp_getset@ */
204d480b
MW		 2720 0, /* @tp_base@ */
2721 0, /* @tp_dict@ */
2722 0, /* @tp_descr_get@ */
2723 0, /* @tp_descr_set@ */
2724 0, /* @tp_dictoffset@ */
2725 0, /* @tp_init@ */
2726 PyType_GenericAlloc, /* @tp_alloc@ */
2727 abstract_pynew, /* @tp_new@ */
2728 0, /* @tp_free@ */
2729 0 /* @tp_is_gc@ */
2730};
2731
c263b05c 2732static const PyTypeObject poly1305key_pytype_skel = {
591bf41b 2733 PyVarObject_HEAD_INIT(0, 0) /* Header */
204d480b
MW		 2734 "poly1305", /* @tp_name@ */
2735 sizeof(poly1305key_pyobj), /* @tp_basicsize@ */
2736 0, /* @tp_itemsize@ */
2737
2738 0, /* @tp_dealloc@ */
2739 0, /* @tp_print@ */
2740 0, /* @tp_getattr@ */
2741 0, /* @tp_setattr@ */
2742 0, /* @tp_compare@ */
2743 0, /* @tp_repr@ */
2744 0, /* @tp_as_number@ */
2745 0, /* @tp_as_sequence@ */
2746 0, /* @tp_as_mapping@ */
2747 0, /* @tp_hash@ */
2748 0, /* @tp_call@ */
2749 0, /* @tp_str@ */
2750 0, /* @tp_getattro@ */
2751 0, /* @tp_setattro@ */
2752 0, /* @tp_as_buffer@ */
2753 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2754 Py_TPFLAGS_BASETYPE,
2755
2756 /* @tp_doc@ */
d96c882e 2757 "poly1305(K): Poly1305 key.",
204d480b
MW		 2758
2759 0, /* @tp_traverse@ */
2760 0, /* @tp_clear@ */
2761 0, /* @tp_richcompare@ */
2762 0, /* @tp_weaklistoffset@ */
2763 0, /* @tp_iter@ */
2764 0, /* @tp_iternext@ */
2765 0, /* @tp_methods@ */
2766 0, /* @tp_members@ */
71574cba 2767 PYGETSET(poly1305), /* @tp_getset@ */
204d480b
MW		 2768 0, /* @tp_base@ */
2769 0, /* @tp_dict@ */
2770 0, /* @tp_descr_get@ */
2771 0, /* @tp_descr_set@ */
2772 0, /* @tp_dictoffset@ */
2773 0, /* @tp_init@ */
2774 PyType_GenericAlloc, /* @tp_alloc@ */
2775 poly1305key_pynew, /* @tp_new@ */
2776 0, /* @tp_free@ */
2777 0 /* @tp_is_gc@ */
2778};
2779
c263b05c 2780static const PyTypeObject poly1305hash_pytype_skel = {
591bf41b 2781 PyVarObject_HEAD_INIT(0, 0) /* Header */
204d480b
MW		 2782 "Poly1305Hash", /* @tp_name@ */
2783 sizeof(poly1305hash_pyobj), /* @tp_basicsize@ */
2784 0, /* @tp_itemsize@ */
2785
2786 0, /* @tp_dealloc@ */
2787 0, /* @tp_print@ */
2788 0, /* @tp_getattr@ */
2789 0, /* @tp_setattr@ */
2790 0, /* @tp_compare@ */
2791 0, /* @tp_repr@ */
2792 0, /* @tp_as_number@ */
2793 0, /* @tp_as_sequence@ */
2794 0, /* @tp_as_mapping@ */
2795 0, /* @tp_hash@ */
2796 0, /* @tp_call@ */
2797 0, /* @tp_str@ */
2798 0, /* @tp_getattro@ */
2799 0, /* @tp_setattro@ */
2800 0, /* @tp_as_buffer@ */
2801 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2802 Py_TPFLAGS_BASETYPE,
2803
2804 /* @tp_doc@ */
d96c882e 2805 "Poly1305 MAC context base class.",
204d480b
MW		 2806
2807 0, /* @tp_traverse@ */
2808 0, /* @tp_clear@ */
2809 0, /* @tp_richcompare@ */
2810 0, /* @tp_weaklistoffset@ */
2811 0, /* @tp_iter@ */
2812 0, /* @tp_iternext@ */
c90f712e 2813 PYMETHODS(poly1305hash), /* @tp_methods@ */
204d480b
MW		 2814 0, /* @tp_members@ */
2815 0, /* @tp_getset@ */
2816 0, /* @tp_base@ */
2817 0, /* @tp_dict@ */
2818 0, /* @tp_descr_get@ */
2819 0, /* @tp_descr_set@ */
2820 0, /* @tp_dictoffset@ */
2821 0, /* @tp_init@ */
2822 PyType_GenericAlloc, /* @tp_alloc@ */
2823 abstract_pynew, /* @tp_new@ */
2824 0, /* @tp_free@ */
2825 0 /* @tp_is_gc@ */
2826};
2827
a75e68c9
MW		 2828/*----- Special snowflake for HSalsa and HChaCha --------------------------*/
2829
2830#define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
2831 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
2832 { \
2833 dance##_ctx dance; \
67c75893 2834 struct bin k, n; \
a75e68c9 2835 PyObject *rc; \
67c75893
MW		 2836 if (!PyArg_ParseTuple(arg, "O&O&:" #hdance "_prf", \
2837 convbin, &k, convbin, &n)) \
a75e68c9 2838 goto end; \
67c75893
MW		 2839 if (k.sz != keysz(k.sz, dance##_keysz)) VALERR("bad key length"); \
2840 if (n.sz != HDANCE##_INSZ) VALERR("bad input length"); \
a75e68c9 2841 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
67c75893 2842 dance##_init(&dance, k.p, k.sz, 0); \
2135a6d3 2843 hdance##_prf(&dance, n.p, BIN_PTR(rc)); \
a75e68c9
MW		 2844 return (rc); \
2845 end: \
2846 return (0); \
2847 }
2848
2849DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa20)
2850DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa2012)
2851DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa208)
2852
2853DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha20)
2854DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha12)
2855DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha8)
204d480b 2856
b35fdbe6
MW		 2857/*----- Keccak-p[1600, n] -------------------------------------------------*/
2858
2859static PyTypeObject *kxvik_pytype;
2860
2861typedef struct kxvik_pyobj {
2862 PyObject_HEAD
2863 keccak1600_state s;
2864 unsigned n;
2865} kxvik_pyobj;
2866
8d2dd9dc 2867static PyObject *kxvik_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
b35fdbe6
MW		 2868{
2869 unsigned n = 24;
2870 kxvik_pyobj *rc = 0;
827f89d7
MW		 2871 static const char *const kwlist[] = { "nround", 0 };
2872 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST,
b35fdbe6
MW		 2873 convuint, &n))
2874 goto end;
2875 rc = (kxvik_pyobj *)ty->tp_alloc(ty, 0);
2876 rc->n = n;
2877 keccak1600_init(&rc->s);
2878end:
2879 return ((PyObject *)rc);
2880}
2881
91e56f06 2882static PyObject *kxvikmeth_copy(PyObject *me)
cfe80e51
MW		 2883{
2884 kxvik_pyobj *k = (kxvik_pyobj *)me, *rc = 0;
2a448f86 2885 rc = (kxvik_pyobj *)Py_TYPE(k)->tp_alloc(Py_TYPE(k), 0);
cfe80e51 2886 rc->s = k->s; rc->n = k->n;
cfe80e51
MW		 2887 return ((PyObject *)rc);
2888}
2889
b35fdbe6
MW		 2890static PyObject *kxvikmeth_mix(PyObject *me, PyObject *arg)
2891{
2892 kxvik_pyobj *k = (kxvik_pyobj *)me;
2893 kludge64 t[25];
2894 const octet *q;
2895 octet buf[8];
2896 unsigned i;
67c75893
MW		 2897 struct bin in;
2898 size_t n;
b35fdbe6 2899
67c75893
MW		 2900 if (!PyArg_ParseTuple(arg, "O&:mix", convbin, &in)) goto end;
2901 if (in.sz > 200) VALERR("out of range");
2902 q = in.p; n = in.sz;
b35fdbe6
MW		 2903 i = 0;
2904 while (n > 8) { LOAD64_L_(t[i], q); i++; q += 8; n -= 8; }
2905 if (n) {
2906 memcpy(buf, q, n); memset(buf + n, 0, 8 - n);
2907 LOAD64_L_(t[i], buf); i++;
2908 }
2909 keccak1600_mix(&k->s, t, i);
2910 RETURN_ME;
2911end:
2912 return (0);
2913}
2914
df0bd0f9
MW		 2915static PyObject *kxvikmeth_set(PyObject *me, PyObject *arg)
2916{
2917 kxvik_pyobj *k = (kxvik_pyobj *)me;
2918 kludge64 t[25];
2919 const octet *q;
2920 unsigned i;
2921 struct bin in;
2922 size_t n;
2923
2924 if (!PyArg_ParseTuple(arg, "O&:set", convbin, &in)) goto end;
2925 if (in.sz > 200) VALERR("out of range");
2926 q = in.p; n = in.sz;
2927 i = 0;
2928 while (n >= 8) { LOAD64_L_(t[i], q); i++; q += 8; n -= 8; }
2929 if (n) VALERR("not 64-bit aligned");
2930 keccak1600_set(&k->s, t, i);
2931 RETURN_ME;
2932end:
2933 return (0);
2934}
2935
b35fdbe6
MW		 2936static PyObject *kxvikmeth_extract(PyObject *me, PyObject *arg)
2937{
2938 kxvik_pyobj *k = (kxvik_pyobj *)me;
2939 PyObject *rc = 0;
2940 kludge64 t[25];
2941 octet *q, buf[8];
2942 unsigned i;
2943 unsigned n;
2944
ae5dbbad 2945 if (!PyArg_ParseTuple(arg, "O&:extract", convuint, &n)) goto end;
b35fdbe6
MW		 2946 if (n > 200) VALERR("out of range");
2947 rc = bytestring_pywrap(0, n);
2135a6d3 2948 q = (octet *)BIN_PTR(rc);
b35fdbe6
MW		 2949 keccak1600_extract(&k->s, t, (n + 7)/8);
2950 i = 0;
2951 while (n > 8) { STORE64_L_(q, t[i]); i++; q += 8; n -= 8; }
2952 if (n) { STORE64_L_(buf, t[i]); memcpy(q, buf, n); }
2953end:
2954 return (rc);
2955}
2956
91e56f06 2957static PyObject *kxvikmeth_step(PyObject *me)
b35fdbe6
MW		 2958{
2959 kxvik_pyobj *k = (kxvik_pyobj *)me;
b35fdbe6
MW		 2960 keccak1600_p(&k->s, &k->s, k->n);
2961 RETURN_ME;
2962}
2963
8e923c68
MW		 2964static const PyMemberDef kxvik_pymembers[] = {
2965#define MEMBERSTRUCT kxvik_pyobj
2966 MEMRNM(nround, T_UINT, n, 0, "KECCAC.nround -> number of rounds")
2967#undef MEMBERSTRUCT
b35fdbe6
MW		 2968 { 0 }
2969};
2970
c90f712e 2971static const PyMethodDef kxvik_pymethods[] = {
b35fdbe6 2972#define METHNAME(func) kxvikmeth_##func
91e56f06 2973 NAMETH(copy, "KECCAK.copy() -> KECCAK'")
d96c882e 2974 METH (mix, "KECCAK.mix(DATA)")
df0bd0f9 2975 METH (set, "KECCAK.set(DATA)")
d96c882e 2976 METH (extract, "KECCAK.extract(NOCTETS)")
91e56f06 2977 NAMETH(step, "KECCAK.step()")
b35fdbe6
MW		 2978#undef METHNAME
2979 { 0 }
2980};
2981
c263b05c 2982static const PyTypeObject kxvik_pytype_skel = {
591bf41b 2983 PyVarObject_HEAD_INIT(0, 0) /* Header */
b35fdbe6
MW		 2984 "Keccak1600", /* @tp_name@ */
2985 sizeof(kxvik_pyobj), /* @tp_basicsize@ */
2986 0, /* @tp_itemsize@ */
2987
2988 0, /* @tp_dealloc@ */
2989 0, /* @tp_print@ */
2990 0, /* @tp_getattr@ */
2991 0, /* @tp_setattr@ */
2992 0, /* @tp_compare@ */
2993 0, /* @tp_repr@ */
2994 0, /* @tp_as_number@ */
2995 0, /* @tp_as_sequence@ */
2996 0, /* @tp_as_mapping@ */
2997 0, /* @tp_hash@ */
2998 0, /* @tp_call@ */
2999 0, /* @tp_str@ */
3000 0, /* @tp_getattro@ */
3001 0, /* @tp_setattro@ */
3002 0, /* @tp_as_buffer@ */
3003 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3004 Py_TPFLAGS_BASETYPE,
3005
3006 /* @tp_doc@ */
d96c882e 3007 "Keccak1600([nround = 24]): Keccak-p[1600, n] state.",
b35fdbe6
MW		 3008
3009 0, /* @tp_traverse@ */
3010 0, /* @tp_clear@ */
3011 0, /* @tp_richcompare@ */
3012 0, /* @tp_weaklistoffset@ */
3013 0, /* @tp_iter@ */
3014 0, /* @tp_iternext@ */
c90f712e 3015 PYMETHODS(kxvik), /* @tp_methods@ */
8e923c68
MW		 3016 PYMEMBERS(kxvik), /* @tp_members@ */
3017 0, /* @tp_getset@ */
b35fdbe6
MW		 3018 0, /* @tp_base@ */
3019 0, /* @tp_dict@ */
3020 0, /* @tp_descr_get@ */
3021 0, /* @tp_descr_set@ */
3022 0, /* @tp_dictoffset@ */
3023 0, /* @tp_init@ */
3024 PyType_GenericAlloc, /* @tp_alloc@ */
3025 kxvik_pynew, /* @tp_new@ */
3026 0, /* @tp_free@ */
3027 0 /* @tp_is_gc@ */
3028};
3029
6bd22b53
MW		 3030static PyTypeObject *shake_pytype, *shake128_pytype, *shake256_pytype;
3031
3032typedef struct shake_pyobj {
3033 PyObject_HEAD
3034 int st;
3035 shake_ctx h;
3036} shake_pyobj;
3037
3038#define SHAKE_H(o) (&((shake_pyobj *)(o))->h)
3039#define SHAKE_ST(o) (((shake_pyobj *)(o))->st)
3040
3041static PyObject *shake_dopynew(void (*initfn)(shake_ctx *,
3042 const void *, size_t,
3043 const void *, size_t),
3044 PyTypeObject *ty,
3045 PyObject *arg, PyObject *kw)
3046{
3047 shake_pyobj *rc = 0;
04b75d71 3048 PyObject *pobj = Py_None, *fobj = Py_None;
67c75893 3049 struct bin p = { 0, 0 }, f = { 0, 0 };
827f89d7 3050 static const char *const kwlist[] = { "perso", "func", 0 };
6bd22b53 3051
04b75d71
MW		 3052 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|OO:new", KWLIST, &pobj, &fobj))
3053 goto end;
3054 if (pobj != Py_None && !convbin(pobj, &p)) goto end;
3055 if (fobj != Py_None && !convbin(fobj, &f)) goto end;
6bd22b53 3056 rc = (shake_pyobj *)ty->tp_alloc(ty, 0);
67c75893 3057 initfn(&rc->h, f.p, f.sz, p.p, p.sz);
6bd22b53
MW		 3058 rc->st = 0;
3059end:
3060 return ((PyObject *)rc);
3061}
3062
3063static PyObject *shake128_pynew(PyTypeObject *ty,
3064 PyObject *arg, PyObject *kw)
3065 { return (shake_dopynew(cshake128_init, ty, arg, kw)); }
3066
3067static PyObject *shake256_pynew(PyTypeObject *ty,
3068 PyObject *arg, PyObject *kw)
3069 { return (shake_dopynew(cshake256_init, ty, arg, kw)); }
3070
3071static int shake_check(PyObject *me, int st)
3072{
3073 if (SHAKE_ST(me) != st) VALERR("wrong state");
3074 return (0);
3075end:
3076 return (-1);
3077}
3078
3079static PyObject *shakemeth_hash(PyObject *me, PyObject *arg)
3080{
67c75893
MW		 3081 struct bin m;
3082 if (!PyArg_ParseTuple(arg, "O&:hash", convbin, &m)) return (0);
6bd22b53 3083 if (shake_check(me, 0)) return (0);
67c75893 3084 shake_hash(SHAKE_H(me), m.p, m.sz);
6bd22b53
MW		 3085 RETURN_ME;
3086}
3087
3088#define SHAKEMETH_HASHU_(n, W, w) \
3089 static PyObject *shakemeth_hashu##w(PyObject *me, PyObject *arg) \
3090 { \
3091 uint##n x; \
3092 octet b[SZ_##W]; \
0e5c668c
MW		 3093 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
3094 if (shake_check(me, 0)) return (0); \
6bd22b53
MW		 3095 STORE##W(b, x); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3096 RETURN_ME; \
6bd22b53
MW		 3097 }
3098DOUINTCONV(SHAKEMETH_HASHU_)
3099
3100#define SHAKEMETH_HASHBUF_(n, W, w) \
3101 static PyObject *shakemeth_hashbuf##w(PyObject *me, PyObject *arg) \
3102 { \
67c75893 3103 struct bin in; \
6bd22b53 3104 octet b[SZ_##W]; \
67c75893 3105 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
e01ab3c9 3106 if (in.sz > MASK##n) VALERR("too large"); \
6bd22b53 3107 if (shake_check(me, 0)) goto end; \
67c75893
MW		 3108 STORE##W(b, in.sz); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3109 shake_hash(SHAKE_H(me), in.p, in.sz); \
6bd22b53
MW		 3110 RETURN_ME; \
3111 end: \
3112 return (0); \
3113 }
3114DOUINTCONV(SHAKEMETH_HASHBUF_)
3115
3116static PyObject *shakemeth_hashstrz(PyObject *me, PyObject *arg)
3117{
3118 char *p;
3119 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
3120 if (shake_check(me, 0)) return (0);
3121 shake_hash(SHAKE_H(me), p, strlen(p) + 1);
3122 RETURN_ME;
3123}
3124
91e56f06 3125static PyObject *shakemeth_xof(PyObject *me)
6bd22b53 3126{
6bd22b53
MW		 3127 if (shake_check(me, 0)) goto end;
3128 shake_xof(SHAKE_H(me));
3129 SHAKE_ST(me) = 1;
3130 RETURN_ME;
3131end:
3132 return (0);
3133}
3134
aaf8c7aa 3135static PyObject *shakemeth_done(PyObject *me, PyObject *arg, PyObject *kw)
6bd22b53
MW		 3136{
3137 PyObject *rc = 0;
aaf8c7aa
MW		 3138 size_t n = 100 - SHAKE_H(me)->h.r/2;
3139 static const char *const kwlist[] = { "hsz", 0 };
3140 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:done", KWLIST, convszt, &n))
3141 goto end;
6bd22b53
MW		 3142 if (shake_check(me, 0)) goto end;
3143 rc = bytestring_pywrap(0, n);
2135a6d3 3144 shake_done(SHAKE_H(me), BIN_PTR(rc), n);
6bd22b53
MW		 3145 SHAKE_ST(me) = -1;
3146end:
3147 return (rc);
3148}
3149
91e56f06 3150static PyObject *shakemeth_copy(PyObject *me)
6bd22b53
MW		 3151{
3152 shake_pyobj *rc = 0;
3153
2a448f86 3154 rc = PyObject_NEW(shake_pyobj, Py_TYPE(me));
6bd22b53
MW		 3155 rc->h = *SHAKE_H(me);
3156 rc->st = SHAKE_ST(me);
9b5c9816 3157 return ((PyObject *)rc);
6bd22b53
MW		 3158}
3159
3160static PyObject *shakemeth_get(PyObject *me, PyObject *arg)
3161{
3162 PyObject *rc = 0;
3163 size_t sz;
3164
3165 if (!PyArg_ParseTuple(arg, "O&:get", convszt, &sz)) goto end;
3166 if (shake_check(me, 1)) goto end;
3167 rc = bytestring_pywrap(0, sz);
2135a6d3 3168 shake_get(SHAKE_H(me), BIN_PTR(rc), sz);
6bd22b53
MW		 3169end:
3170 return (rc);
3171}
3172
3173static PyObject *shakemeth_mask(PyObject *me, PyObject *arg)
3174{
3175 PyObject *rc = 0;
67c75893 3176 struct bin in;
6bd22b53 3177
67c75893 3178 if (!PyArg_ParseTuple(arg, "O&:mask", convbin, &in)) goto end;
6bd22b53 3179 if (shake_check(me, 1)) goto end;
67c75893 3180 rc = bytestring_pywrap(0, in.sz);
2135a6d3 3181 shake_mask(SHAKE_H(me), in.p, BIN_PTR(rc), in.sz);
6bd22b53
MW		 3182end:
3183 return (rc);
3184}
3185
6bd22b53
MW		 3186static PyObject *shakeget_state(PyObject *me, void *hunoz)
3187{
3188 int st = SHAKE_ST(me);
2135a6d3
MW		 3189 return (TEXT_FROMSTR(st == 0 ? "absorb" :
3190 st == 1 ? "squeeze" : "dead"));
6bd22b53
MW		 3191}
3192
8e923c68
MW		 3193static const PyMemberDef shake_pymembers[] = {
3194#define MEMBERSTRUCT shake_pyobj
3195 MEMRNM(rate, T_UINT, h.h.r, READONLY, "S.rate -> rate, in bytes")
3196 MEMRNM(buffered, T_UINT, h.h.n, READONLY,
3197 "S.buffered -> amount currently buffered")
3198#undef MEMBERSTRUCT
3199 { 0 }
3200};
3201
c90f712e 3202static const PyGetSetDef shake_pygetset[] = {
6bd22b53 3203#define GETSETNAME(op, name) shake##op##_##name
d96c882e 3204 GET (state, "S.state -> `absorb', `squeeze', `dead'")
6bd22b53
MW		 3205#undef GETSETNAME
3206 { 0 }
3207};
3208
c90f712e 3209static const PyMethodDef shake_pymethods[] = {
6bd22b53 3210#define METHNAME(func) shakemeth_##func
91e56f06 3211 NAMETH(copy, "S.copy() -> SS")
d96c882e 3212 METH (hash, "S.hash(M)")
6bd22b53
MW		 3213#define METHU_(n, W, w) METH(hashu##w, "S.hashu" #w "(WORD)")
3214 DOUINTCONV(METHU_)
3215#undef METHU_
3216#define METHBUF_(n, W, w) METH(hashbuf##w, "S.hashbuf" #w "(BYTES)")
3217 DOUINTCONV(METHBUF_)
3218#undef METHBUF_
d96c882e 3219 METH (hashstrz, "S.hashstrz(STRING)")
91e56f06 3220 NAMETH(xof, "S.xof()")
aaf8c7aa 3221 KWMETH(done, "S.done([hsz = CAP]) -> H")
d96c882e
MW		 3222 METH (get, "S.get(LEN) -> H")
3223 METH (mask, "S.mask(M) -> C")
6bd22b53
MW		 3224#undef METHNAME
3225 { 0 }
3226};
3227
c263b05c 3228static const PyTypeObject shake_pytype_skel = {
591bf41b 3229 PyVarObject_HEAD_INIT(0, 0) /* Header */
6bd22b53
MW		 3230 "Shake", /* @tp_name@ */
3231 sizeof(shake_pyobj), /* @tp_basicsize@ */
3232 0, /* @tp_itemsize@ */
3233
3234 0, /* @tp_dealloc@ */
3235 0, /* @tp_print@ */
3236 0, /* @tp_getattr@ */
3237 0, /* @tp_setattr@ */
3238 0, /* @tp_compare@ */
3239 0, /* @tp_repr@ */
3240 0, /* @tp_as_number@ */
3241 0, /* @tp_as_sequence@ */
3242 0, /* @tp_as_mapping@ */
3243 0, /* @tp_hash@ */
3244 0, /* @tp_call@ */
3245 0, /* @tp_str@ */
3246 0, /* @tp_getattro@ */
3247 0, /* @tp_setattro@ */
3248 0, /* @tp_as_buffer@ */
3249 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3250 Py_TPFLAGS_BASETYPE,
3251
3252 /* @tp_doc@ */
d96c882e 3253 "SHAKE/cSHAKE/KMAC base class.",
6bd22b53
MW		 3254
3255 0, /* @tp_traverse@ */
3256 0, /* @tp_clear@ */
3257 0, /* @tp_richcompare@ */
3258 0, /* @tp_weaklistoffset@ */
3259 0, /* @tp_iter@ */
3260 0, /* @tp_iternext@ */
c90f712e 3261 PYMETHODS(shake), /* @tp_methods@ */
8e923c68 3262 PYMEMBERS(shake), /* @tp_members@ */
c90f712e 3263 PYGETSET(shake), /* @tp_getset@ */
6bd22b53
MW		 3264 0, /* @tp_base@ */
3265 0, /* @tp_dict@ */
3266 0, /* @tp_descr_get@ */
3267 0, /* @tp_descr_set@ */
3268 0, /* @tp_dictoffset@ */
3269 0, /* @tp_init@ */
3270 PyType_GenericAlloc, /* @tp_alloc@ */
3271 abstract_pynew, /* @tp_new@ */
3272 0, /* @tp_free@ */
3273 0 /* @tp_is_gc@ */
3274};
3275
c263b05c 3276static const PyTypeObject shake128_pytype_skel = {
591bf41b 3277 PyVarObject_HEAD_INIT(0, 0) /* Header */
6bd22b53
MW		 3278 "Shake128", /* @tp_name@ */
3279 0, /* @tp_basicsize@ */
3280 0, /* @tp_itemsize@ */
3281
3282 0, /* @tp_dealloc@ */
3283 0, /* @tp_print@ */
3284 0, /* @tp_getattr@ */
3285 0, /* @tp_setattr@ */
3286 0, /* @tp_compare@ */
3287 0, /* @tp_repr@ */
3288 0, /* @tp_as_number@ */
3289 0, /* @tp_as_sequence@ */
3290 0, /* @tp_as_mapping@ */
3291 0, /* @tp_hash@ */
3292 0, /* @tp_call@ */
3293 0, /* @tp_str@ */
3294 0, /* @tp_getattro@ */
3295 0, /* @tp_setattro@ */
3296 0, /* @tp_as_buffer@ */
3297 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3298 Py_TPFLAGS_BASETYPE,
3299
3300 /* @tp_doc@ */
d96c882e 3301 "Shake128([perso = STR], [func = STR]): SHAKE128/cSHAKE128 XOF.",
6bd22b53
MW		 3302
3303 0, /* @tp_traverse@ */
3304 0, /* @tp_clear@ */
3305 0, /* @tp_richcompare@ */
3306 0, /* @tp_weaklistoffset@ */
3307 0, /* @tp_iter@ */
3308 0, /* @tp_iternext@ */
3309 0, /* @tp_methods@ */
3310 0, /* @tp_members@ */
3311 0, /* @tp_getset@ */
3312 0, /* @tp_base@ */
3313 0, /* @tp_dict@ */
3314 0, /* @tp_descr_get@ */
3315 0, /* @tp_descr_set@ */
3316 0, /* @tp_dictoffset@ */
3317 0, /* @tp_init@ */
3318 PyType_GenericAlloc, /* @tp_alloc@ */
3319 shake128_pynew, /* @tp_new@ */
3320 0, /* @tp_free@ */
3321 0 /* @tp_is_gc@ */
3322};
3323
c263b05c 3324static const PyTypeObject shake256_pytype_skel = {
591bf41b 3325 PyVarObject_HEAD_INIT(0, 0) /* Header */
6bd22b53
MW		 3326 "Shake256", /* @tp_name@ */
3327 0, /* @tp_basicsize@ */
3328 0, /* @tp_itemsize@ */
3329
3330 0, /* @tp_dealloc@ */
3331 0, /* @tp_print@ */
3332 0, /* @tp_getattr@ */
3333 0, /* @tp_setattr@ */
3334 0, /* @tp_compare@ */
3335 0, /* @tp_repr@ */
3336 0, /* @tp_as_number@ */
3337 0, /* @tp_as_sequence@ */
3338 0, /* @tp_as_mapping@ */
3339 0, /* @tp_hash@ */
3340 0, /* @tp_call@ */
3341 0, /* @tp_str@ */
3342 0, /* @tp_getattro@ */
3343 0, /* @tp_setattro@ */
3344 0, /* @tp_as_buffer@ */
3345 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3346 Py_TPFLAGS_BASETYPE,
3347
3348 /* @tp_doc@ */
d96c882e 3349 "Shake256([perso = STR], [func = STR]): SHAKE256/cSHAKE256 XOF.",
6bd22b53
MW		 3350
3351 0, /* @tp_traverse@ */
3352 0, /* @tp_clear@ */
3353 0, /* @tp_richcompare@ */
3354 0, /* @tp_weaklistoffset@ */
3355 0, /* @tp_iter@ */
3356 0, /* @tp_iternext@ */
3357 0, /* @tp_methods@ */
3358 0, /* @tp_members@ */
3359 0, /* @tp_getset@ */
3360 0, /* @tp_base@ */
3361 0, /* @tp_dict@ */
3362 0, /* @tp_descr_get@ */
3363 0, /* @tp_descr_set@ */
3364 0, /* @tp_dictoffset@ */
3365 0, /* @tp_init@ */
3366 PyType_GenericAlloc, /* @tp_alloc@ */
3367 shake256_pynew, /* @tp_new@ */
3368 0, /* @tp_free@ */
3369 0 /* @tp_is_gc@ */
3370};
3371
668b5f54
MW		 3372static PyTypeObject *kmac_pytype, *kmac128_pytype, *kmac256_pytype;
3373
3374static PyObject *kmac_dopynew(void (*initfn)(shake_ctx *,
3375 const void *, size_t,
3376 const void *, size_t),
3377 PyTypeObject *ty,
3378 PyObject *arg, PyObject *kw)
3379{
3380 shake_pyobj *rc = 0;
3381 PyObject *pobj = Py_None;
3382 struct bin k = { 0, 0 }, p = { 0, 0 };
3383 static const char *const kwlist[] = { "key", "perso", 0 };
3384
3385 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O:new", KWLIST,
3386 convbin, &k, &pobj))
3387 goto end;
3388 if (pobj != Py_None && !convbin(pobj, &p)) goto end;
3389 rc = (shake_pyobj *)ty->tp_alloc(ty, 0);
3390 initfn(&rc->h, p.p, p.sz, k.p, k.sz);
3391 rc->st = 0;
3392end:
3393 return ((PyObject *)rc);
3394}
3395
3396static PyObject *kmac128_pynew(PyTypeObject *ty,
3397 PyObject *arg, PyObject *kw)
3398 { return (kmac_dopynew(kmac128_init, ty, arg, kw)); }
3399
3400static PyObject *kmac256_pynew(PyTypeObject *ty,
3401 PyObject *arg, PyObject *kw)
3402 { return (kmac_dopynew(kmac256_init, ty, arg, kw)); }
3403
3404static PyObject *kmacmeth_xof(PyObject *me)
3405{
3406 if (shake_check(me, 0)) goto end;
3407 kmac_xof(SHAKE_H(me));
3408 SHAKE_ST(me) = 1;
3409 RETURN_ME;
3410end:
3411 return (0);
3412}
3413
3414static PyObject *kmacmeth_done(PyObject *me, PyObject *arg, PyObject *kw)
3415{
3416 PyObject *rc = 0;
3417 size_t n = 100 - SHAKE_H(me)->h.r/2;
3418 static const char *const kwlist[] = { "hsz", 0 };
3419 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:done", KWLIST, convszt, &n))
3420 goto end;
3421 if (shake_check(me, 0)) goto end;
3422 rc = bytestring_pywrap(0, n);
3423 kmac_done(SHAKE_H(me), BIN_PTR(rc), n);
3424 SHAKE_ST(me) = -1;
3425end:
3426 return (rc);
3427}
3428
3429static const PyMethodDef kmac_pymethods[] = {
3430#define METHNAME(func) kmacmeth_##func
3431 NAMETH(xof, "K.xof()")
3432 KWMETH(done, "K.done([hsz = CAP/2]) -> T")
3433#undef METHNAME
3434 { 0 }
3435};
3436
3437static const PyTypeObject kmac_pytype_skel = {
3438 PyVarObject_HEAD_INIT(0, 0) /* Header */
3439 "KMAC", /* @tp_name@ */
3440 sizeof(shake_pyobj), /* @tp_basicsize@ */
3441 0, /* @tp_itemsize@ */
3442
3443 0, /* @tp_dealloc@ */
3444 0, /* @tp_print@ */
3445 0, /* @tp_getattr@ */
3446 0, /* @tp_setattr@ */
3447 0, /* @tp_compare@ */
3448 0, /* @tp_repr@ */
3449 0, /* @tp_as_number@ */
3450 0, /* @tp_as_sequence@ */
3451 0, /* @tp_as_mapping@ */
3452 0, /* @tp_hash@ */
3453 0, /* @tp_call@ */
3454 0, /* @tp_str@ */
3455 0, /* @tp_getattro@ */
3456 0, /* @tp_setattro@ */
3457 0, /* @tp_as_buffer@ */
3458 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3459 Py_TPFLAGS_BASETYPE,
3460
3461 /* @tp_doc@ */
3462 "KMAC base class.",
3463
3464 0, /* @tp_traverse@ */
3465 0, /* @tp_clear@ */
3466 0, /* @tp_richcompare@ */
3467 0, /* @tp_weaklistoffset@ */
3468 0, /* @tp_iter@ */
3469 0, /* @tp_iternext@ */
3470 PYMETHODS(kmac), /* @tp_methods@ */
3471 0, /* @tp_members@ */
3472 0, /* @tp_getset@ */
3473 0, /* @tp_base@ */
3474 0, /* @tp_dict@ */
3475 0, /* @tp_descr_get@ */
3476 0, /* @tp_descr_set@ */
3477 0, /* @tp_dictoffset@ */
3478 0, /* @tp_init@ */
3479 PyType_GenericAlloc, /* @tp_alloc@ */
3480 abstract_pynew, /* @tp_new@ */
3481 0, /* @tp_free@ */
3482 0 /* @tp_is_gc@ */
3483};
3484
3485static const PyTypeObject kmac128_pytype_skel = {
3486 PyVarObject_HEAD_INIT(0, 0) /* Header */
3487 "KMAC128", /* @tp_name@ */
3488 0, /* @tp_basicsize@ */
3489 0, /* @tp_itemsize@ */
3490
3491 0, /* @tp_dealloc@ */
3492 0, /* @tp_print@ */
3493 0, /* @tp_getattr@ */
3494 0, /* @tp_setattr@ */
3495 0, /* @tp_compare@ */
3496 0, /* @tp_repr@ */
3497 0, /* @tp_as_number@ */
3498 0, /* @tp_as_sequence@ */
3499 0, /* @tp_as_mapping@ */
3500 0, /* @tp_hash@ */
3501 0, /* @tp_call@ */
3502 0, /* @tp_str@ */
3503 0, /* @tp_getattro@ */
3504 0, /* @tp_setattro@ */
3505 0, /* @tp_as_buffer@ */
3506 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3507 Py_TPFLAGS_BASETYPE,
3508
3509 /* @tp_doc@ */
3510 "KMAC128(KEY, [perso = STR]): KMAC XOMAC.",
3511
3512 0, /* @tp_traverse@ */
3513 0, /* @tp_clear@ */
3514 0, /* @tp_richcompare@ */
3515 0, /* @tp_weaklistoffset@ */
3516 0, /* @tp_iter@ */
3517 0, /* @tp_iternext@ */
3518 0, /* @tp_methods@ */
3519 0, /* @tp_members@ */
3520 0, /* @tp_getset@ */
3521 0, /* @tp_base@ */
3522 0, /* @tp_dict@ */
3523 0, /* @tp_descr_get@ */
3524 0, /* @tp_descr_set@ */
3525 0, /* @tp_dictoffset@ */
3526 0, /* @tp_init@ */
3527 PyType_GenericAlloc, /* @tp_alloc@ */
3528 kmac128_pynew, /* @tp_new@ */
3529 0, /* @tp_free@ */
3530 0 /* @tp_is_gc@ */
3531};
3532
3533static const PyTypeObject kmac256_pytype_skel = {
3534 PyVarObject_HEAD_INIT(0, 0) /* Header */
3535 "KMAC256", /* @tp_name@ */
3536 0, /* @tp_basicsize@ */
3537 0, /* @tp_itemsize@ */
3538
3539 0, /* @tp_dealloc@ */
3540 0, /* @tp_print@ */
3541 0, /* @tp_getattr@ */
3542 0, /* @tp_setattr@ */
3543 0, /* @tp_compare@ */
3544 0, /* @tp_repr@ */
3545 0, /* @tp_as_number@ */
3546 0, /* @tp_as_sequence@ */
3547 0, /* @tp_as_mapping@ */
3548 0, /* @tp_hash@ */
3549 0, /* @tp_call@ */
3550 0, /* @tp_str@ */
3551 0, /* @tp_getattro@ */
3552 0, /* @tp_setattro@ */
3553 0, /* @tp_as_buffer@ */
3554 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3555 Py_TPFLAGS_BASETYPE,
3556
3557 /* @tp_doc@ */
3558 "KMAC256(KEY, [perso = STR]): KMAC XOMAC.",
3559
3560 0, /* @tp_traverse@ */
3561 0, /* @tp_clear@ */
3562 0, /* @tp_richcompare@ */
3563 0, /* @tp_weaklistoffset@ */
3564 0, /* @tp_iter@ */
3565 0, /* @tp_iternext@ */
3566 0, /* @tp_methods@ */
3567 0, /* @tp_members@ */
3568 0, /* @tp_getset@ */
3569 0, /* @tp_base@ */
3570 0, /* @tp_dict@ */
3571 0, /* @tp_descr_get@ */
3572 0, /* @tp_descr_set@ */
3573 0, /* @tp_dictoffset@ */
3574 0, /* @tp_init@ */
3575 PyType_GenericAlloc, /* @tp_alloc@ */
3576 kmac256_pynew, /* @tp_new@ */
3577 0, /* @tp_free@ */
3578 0 /* @tp_is_gc@ */
3579};
3580
a29f5426
MW		 3581static PyTypeObject *strobe_pytype;
3582
3583typedef struct strobe_pyobj {
3584 PyObject_HEAD
3585 strobe_ctx ctx;
3586} strobe_pyobj;
3587#define STROBE_CTX(o) (&((strobe_pyobj *)(o))->ctx)
3588
3589static int convstrbf(PyObject *x, void *p)
3590{
3591 unsigned *ff = p, f;
3592 const char *q;
3593 size_t sz;
3594 int rc = 0;
3595
3596 if (TEXT_CHECK(x)) {
3597 TEXT_PTRLEN(x, q, sz); f = 0;
3598 while (sz--) switch (*q++) {
3599 case 'I': f |= STRBF_I; break;
3600 case 'A': f |= STRBF_A; break;
3601 case 'C': f |= STRBF_C; break;
3602 case 'T': f |= STRBF_T; break;
3603 case 'M': f |= STRBF_M; break;
3604 default: if (!ISSPACE(q[-1])) VALERR("unknown flag character");
3605 }
3606 *ff = f; rc = 1;
3607 } else if (convuint(x, ff))
3608 rc = 1;
3609 else {
3610 PyErr_Clear();
3611 TYERR("expected string or int");
3612 }
3613end:
3614 return (rc);
3615}
3616
3617
3618static PyObject *strobe_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
3619{
3620 strobe_pyobj *rc = 0;
3621 unsigned lambda = 128;
3622 static const char *const kwlist[] = { "l", 0 };
3623
3624 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST,
3625 convuint, &lambda))
3626 goto end;
3627 if (lambda%32 || lambda > 704) VALERR("invalid security parameter");
3628 rc = (strobe_pyobj *)ty->tp_alloc(ty, 0);
3629 strobe_init(&rc->ctx, lambda);
3630end:
3631 return ((PyObject *)rc);
3632}
3633
3634static PyObject *strobemeth_copy(PyObject *me)
3635{
3636 strobe_pyobj *strobe = (strobe_pyobj *)me, *rc;
3637
3638 rc = PyObject_NEW(strobe_pyobj, me->ob_type);
3639 rc->ctx = strobe->ctx;
3640 return ((PyObject *)rc);
3641}
3642
3643static int strobe_checkinactive(PyObject *me)
3644{
3645 int rc = -1;
3646
3647 if (STROBE_CTX(me)->f&STRBF_ACTIVE) VALERR("operation already active");
3648 rc = 0;
3649end:
3650 return (rc);
3651}
3652
3653static int strobe_checkactive(PyObject *me)
3654{
3655 int rc = -1;
3656
3657 if (!(STROBE_CTX(me)->f&STRBF_ACTIVE)) VALERR("operation not active");
3658 rc = 0;
3659end:
3660 return (rc);
3661}
3662
3663static PyObject *strobemeth_begin(PyObject *me, PyObject *arg)
3664{
3665 unsigned f;
3666
3667 if (!PyArg_ParseTuple(arg, "O&:begin", convstrbf, &f)) goto end;
3668 if (strobe_checkinactive(me)) goto end;
3669 if (f&~STRBF_VALIDMASK) VALERR("bad flags");
3670 strobe_begin(STROBE_CTX(me), f);
3671 RETURN_ME;
3672end:
3673 return (0);
3674}
3675
3676static PyObject *strobe_pyprocess(PyObject *me,
3677 const void *p0, size_t sz0,
3678 const void *p1, size_t sz1)
3679{
3680 char *q;
3681 PyObject *rc = 0;
3682
3683 if (strobe_checkactive(me)) goto end;
3684 if (!(STROBE_CTX(me)->f&STRBF_WANTIN) && p0)
3685 VALERR("no input expected for current operation");
3686 if (!(STROBE_CTX(me)->f&STRBF_WANTOUT)) q = 0;
3687 else { rc = bytestring_pywrap(0, sz0 + sz1); q = BIN_PTR(rc); }
3688 strobe_process(STROBE_CTX(me), p0, q, sz0);
3689 if (sz1) strobe_process(STROBE_CTX(me), p1, q ? q + sz0 : 0, sz1);
3690 if (!q) RETURN_ME;
3691end:
3692 return (rc);
3693}
3694
3695static PyObject *strobemeth_process(PyObject *me, PyObject *arg)
3696{
3697 PyObject *inobj;
3698 struct bin in;
3699 PyObject *rc = 0;
3700
3701 in.p = 0;
3702 if (!PyArg_ParseTuple(arg, "O:process", &inobj)) goto end;
3703 if (!convszt(inobj, &in.sz) && (PyErr_Clear(), !convbin(inobj, &in))) {
3704 PyErr_Clear();
3705 TYERR("expected integer, string, unicode, or single-segment buffer");
3706 }
3707 rc = strobe_pyprocess(me, in.p, in.sz, 0, 0);
3708end:
3709 return (rc);
3710}
3711
3712static PyObject *strobemeth_done(PyObject *me)
3713{
3714 unsigned f;
3715 int rc;
3716
3717 if (strobe_checkactive(me)) return (0);
3718 f = STROBE_CTX(me)->f; rc = strobe_done(STROBE_CTX(me));
3719 if (f&STRBF_VRFOUT) return (getbool(!rc));
3720 else RETURN_ME;
3721}
3722
3723#define STROBEMETH_PROCESSU_(n, W, w) \
3724 static PyObject *strobemeth_processu##w(PyObject *me, PyObject *arg) \
3725 { \
3726 uint##n x; \
3727 octet b[SZ_##W]; \
3728 if (!PyArg_ParseTuple(arg, "O&:processu" #w, convu##n, &x)) return (0); \
3729 STORE##W(b, x); return (strobe_pyprocess(me, b, sizeof(b), 0, 0)); \
3730 }
3731DOUINTCONV(STROBEMETH_PROCESSU_)
3732
3733#define STROBEMETH_PROCESSBUF_(n, W, w) \
3734 static PyObject *strobemeth_processbuf##w(PyObject *me, PyObject *arg) \
3735 { \
3736 struct bin in; \
3737 octet b[SZ_##W]; \
3738 if (!PyArg_ParseTuple(arg, "O&:processbuf" #w, convbin, &in)) goto end; \
3739 if (in.sz > MASK##n) VALERR("too large"); \
3740 STORE##W(b, in.sz); \
3741 return (strobe_pyprocess(me, b, sizeof(b), in.p, in.sz)); \
3742 end: \
3743 return (0); \
3744 }
3745DOUINTCONV(STROBEMETH_PROCESSBUF_)
3746
3747static PyObject *strobemeth_processstrz(PyObject *me, PyObject *arg)
3748{
3749 char *p;
3750 if (!PyArg_ParseTuple(arg, "s:processstrz", &p)) return (0);
3751 return (strobe_pyprocess(me, p, strlen(p) + 1, 0, 0));
3752}
3753
3754#define STROBEMETH_INONLY_(meth, arg) \
3755 static PyObject *strobemeth_##meth(PyObject *me, \
3756 PyObject *arg, PyObject *kw) \
3757 { \
3758 struct bin in; unsigned f = 0; \
3759 static const char *const kwlist[] = { #arg, "f", 0 }; \
3760 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:" #meth, KWLIST, \
3761 convbin, &in, convstrbf, &f)) \
3762 goto end; \
3763 if (f&~STRBF_M) VALERR("bad flags"); \
3764 if (strobe_checkinactive(me)) goto end; \
3765 strobe_##meth(STROBE_CTX(me), f, in.p, in.sz); \
3766 RETURN_ME; \
3767 end: \
3768 return (0); \
3769 }
3770
3771#define STROBEMETH_OUTONLY_(meth) \
3772 static PyObject *strobemeth_##meth(PyObject *me, \
3773 PyObject *arg, PyObject *kw) \
3774 { \
3775 size_t sz; unsigned f = 0; PyObject *rc; \
3776 static const char *const kwlist[] = { "sz", "f", 0 }; \
3777 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:" #meth, KWLIST, \
3778 convszt, &sz, convstrbf, &f)) \
3779 goto end; \
3780 if (f&~STRBF_M) VALERR("bad flags"); \
3781 if (strobe_checkinactive(me)) goto end; \
3782 rc = bytestring_pywrap(0, sz); \
3783 strobe_##meth(STROBE_CTX(me), f, BIN_PTR(rc), sz); \
3784 return (rc); \
3785 end: \
3786 return (0); \
3787 }
3788
3789#define STROBEMETH_INOUT_(meth, arg) \
3790 static PyObject *strobemeth_##meth(PyObject *me, \
3791 PyObject *arg, PyObject *kw) \
3792 { \
3793 struct bin in; unsigned f = 0; PyObject *rc; \
3794 static const char *const kwlist[] = { #arg, "f", 0 }; \
3795 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:" #meth, KWLIST, \
3796 convbin, &in, convstrbf, &f)) \
3797 goto end; \
3798 if (f&~STRBF_M) VALERR("bad flags"); \
3799 if (strobe_checkinactive(me)) goto end; \
3800 rc = bytestring_pywrap(0, in.sz); \
3801 strobe_##meth(STROBE_CTX(me), f, in.p, BIN_PTR(rc), in.sz); \
3802 return (rc); \
3803 end: \
3804 return (0); \
3805 }
3806
3807STROBEMETH_INONLY_(key, key)
3808STROBEMETH_INONLY_(ad, msg)
3809STROBEMETH_OUTONLY_(prf)
3810STROBEMETH_INONLY_(clrout, msg)
3811STROBEMETH_INONLY_(clrin, msg)
3812STROBEMETH_INOUT_(encout, msg)
3813STROBEMETH_INOUT_(encin, ct)
3814STROBEMETH_OUTONLY_(macout)
3815
3816static PyObject *strobemeth_macin(PyObject *me, PyObject *arg, PyObject *kw)
3817{
3818 struct bin in; unsigned f = 0;
3819 static const char *const kwlist[] = { "tag", "f", 0 };
3820 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:macin", KWLIST,
3821 convbin, &in, convstrbf, &f))
3822 goto end;
3823 if (f&~STRBF_M) VALERR("bad flags");
3824 if (strobe_checkinactive(me)) goto end;
3825 return (getbool(!strobe_macin(STROBE_CTX(me), f, in.p, in.sz)));
3826end:
3827 return (0);
3828}
3829
3830static PyObject *strobemeth_ratchet(PyObject *me,
3831 PyObject *arg, PyObject *kw)
3832{
3833 size_t sz; unsigned f = 0;
3834 static const char *const kwlist[] = { "sz", "f", 0 };
3835 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:ratchet", KWLIST,
3836 convszt, &sz, convstrbf, &f))
3837 goto end;
3838 if (f&~STRBF_M) VALERR("bad flags");
3839 if (strobe_checkinactive(me)) goto end;
3840 strobe_ratchet(STROBE_CTX(me), f, sz); RETURN_ME;
3841end:
3842 return (0);
3843}
3844
3845static PyObject *strobeget_l(PyObject *me, void *hunoz)
3846 { return (PyInt_FromLong(4*(200 - STROBE_CTX(me)->r))); }
3847
3848static PyObject *strobeget_role(PyObject *me, void *hunoz)
3849 { return (PyInt_FromLong(STROBE_CTX(me)->f&STROBE_ROLEMASK)); }
3850
3851static PyObject *strobeget_activep(PyObject *me, void *hunoz)
3852 { return (getbool(STROBE_CTX(me)->f&STRBF_ACTIVE)); }
3853
3854static const PyGetSetDef strobe_pygetset[] = {
3855#define GETSETNAME(op, name) strobe##op##_##name
3856 GET (l, "STROBE.l -> security parameter")
3857 GET (role, "STROBE.role -> STRBRL_...")
3858 GET (activep, "STROBE.activep -> operation active?")
3859#undef GETSETNAME
3860 { 0 }
3861};
3862
3863static const PyMethodDef strobe_pymethods[] = {
3864#define METHNAME(func) strobemeth_##func
3865 NAMETH(copy, "S.copy() -> SS")
3866 METH (begin, "S.begin(MSGTY)")
3867 METH (process, "S.process(MSG | SZ) [-> OUT]")
3868#define METHU_(n, W, w) \
3869 METH(processu##w, "S.processu" #w "(WORD) [-> OUT]")
3870 DOUINTCONV(METHU_)
3871#undef METHU_
3872#define METHBUF_(n, W, w) \
3873 METH(processbuf##w, "S.processbuf" #w "(BYTES) [-> OUT]")
3874 DOUINTCONV(METHBUF_)
3875#undef METHBUF_
3876 METH (processstrz, "S.processstrz(STRING) [-> OUT]")
3877 NAMETH(done, "S.done() [-> OK?]")
3878 KWMETH(key, "S.key(KEY, [f = 0])")
3879 KWMETH(ad, "S.ad(MSG, [f = 0])")
3880 KWMETH(prf, "S.prf(SZ, [f = 0]) -> BYTES")
3881 KWMETH(clrout, "S.clrout(MSG, [f = 0])")
3882 KWMETH(clrin, "S.clrin(MSG, [f = 0])")
3883 KWMETH(encout, "S.encout(MSG, [f = 0]) -> CT")
3884 KWMETH(encin, "S.encin(CT, [f = 0]) -> MSG")
3885 KWMETH(macout, "S.macout(SZ, [f = 0]) -> TAG")
3886 KWMETH(macin, "S.macin(TAG, [f = 0]) -> OK?")
3887 KWMETH(ratchet, "S.ratchet(SZ, [f = 0])")
3888#undef METHNAME
3889 { 0 }
3890};
3891
3892static const PyTypeObject strobe_pytype_skel = {
3893 PyVarObject_HEAD_INIT(0, 0) /* Header */
3894 "Strobe", /* @tp_name@ */
3895 sizeof(strobe_pyobj), /* @tp_basicsize@ */
3896 0, /* @tp_itemsize@ */
3897
3898 0, /* @tp_dealloc@ */
3899 0, /* @tp_print@ */
3900 0, /* @tp_getattr@ */
3901 0, /* @tp_setattr@ */
3902 0, /* @tp_compare@ */
3903 0, /* @tp_repr@ */
3904 0, /* @tp_as_number@ */
3905 0, /* @tp_as_sequence@ */
3906 0, /* @tp_as_mapping@ */
3907 0, /* @tp_hash@ */
3908 0, /* @tp_call@ */
3909 0, /* @tp_str@ */
3910 0, /* @tp_getattro@ */
3911 0, /* @tp_setattro@ */
3912 0, /* @tp_as_buffer@ */
3913 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3914 Py_TPFLAGS_BASETYPE,
3915
3916 /* @tp_doc@ */
3917"STROBE symmetric-crypto framework.",
3918
3919 0, /* @tp_traverse@ */
3920 0, /* @tp_clear@ */
3921 0, /* @tp_richcompare@ */
3922 0, /* @tp_weaklistoffset@ */
3923 0, /* @tp_iter@ */
3924 0, /* @tp_iternext@ */
3925 PYMETHODS(strobe), /* @tp_methods@ */
3926 0, /* @tp_members@ */
3927 PYGETSET(strobe), /* @tp_getset@ */
3928 0, /* @tp_base@ */
3929 0, /* @tp_dict@ */
3930 0, /* @tp_descr_get@ */
3931 0, /* @tp_descr_set@ */
3932 0, /* @tp_dictoffset@ */
3933 0, /* @tp_init@ */
3934 PyType_GenericAlloc, /* @tp_alloc@ */
3935 strobe_pynew, /* @tp_new@ */
3936 0, /* @tp_free@ */
3937 0 /* @tp_is_gc@ */
3938};
3939
03ed9abb
MW		 3940/*----- Pseudorandom permutations -----------------------------------------*/
3941
3942static PyTypeObject *gcprp_pytype, *gprp_pytype;
3943
3944typedef struct prpinfo {
3945 const char *name;
3946 const octet *keysz;
3947 size_t ctxsz;
3948 size_t blksz;
3949 void (*init)(void *, const void *, size_t);
3950 void (*eblk)(void *, const void *, void *);
3951 void (*dblk)(void *, const void *, void *);
3952} prpinfo;
3953
3954#define PRP_DEF(PRE, pre) \
3955 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
3956 { pre##_init(ctx, k, ksz); } \
3957 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
3958 { \
3959 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3960 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3961 } \
3962 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
3963 { \
3964 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3965 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3966 } \
3967 static const prpinfo pre##_prpinfo = { \
3968 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
3969 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
3970 };
3971PRPS(PRP_DEF)
3972
3973static const struct prpinfo *const gprptab[] = {
3974#define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
3975 PRPS(PRP_ENTRY)
3976 0
b2687a0a 3977};
03ed9abb
MW		 3978
3979typedef struct gcprp_pyobj {
3980 PyHeapTypeObject ty;
3981 const prpinfo *prp;
3982} gcprp_pyobj;
3983#define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
3984
3985typedef struct gprp_pyobj {
3986 PyObject_HEAD
3987 const prpinfo *prp;
3988} gprp_pyobj;
3989#define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
3990#define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
3991
3992typedef struct prp {
3993 const prpinfo *prp;
3994 void *ctx;
3995} prp;
3996
3997static PyObject *gprp_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
3998{
827f89d7 3999 static const char *const kwlist[] = { "key", 0 };
67c75893 4000 struct bin k;
03ed9abb
MW		 4001 const prpinfo *prp = GCPRP_PRP(ty);
4002 PyObject *me;
4003
67c75893 4004 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
03ed9abb 4005 goto end;
67c75893 4006 if (keysz(k.sz, prp->keysz) != k.sz) VALERR("bad key length");
03ed9abb
MW		 4007 me = (PyObject *)ty->tp_alloc(ty, 0);
4008 GPRP_PRP(me) = prp;
67c75893 4009 prp->init(GPRP_CTX(me), k.p, k.sz);
cb8f9507 4010 RETURN_ME;
03ed9abb 4011end:
b2687a0a 4012 return (0);
03ed9abb
MW		 4013}
4014
4015static void gprp_pydealloc(PyObject *me)
2a448f86 4016 { Py_DECREF(Py_TYPE(me)); FREEOBJ(me); }
03ed9abb
MW		 4017
4018static PyObject *gcprp_pywrap(const prpinfo *prp)
4019{
4020 gcprp_pyobj *g = newtype(gcprp_pytype, 0, prp->name);
4021 g->prp = prp;
24b3d57b
MW		 4022 g->ty.ht_type.tp_basicsize = sizeof(gprp_pyobj) + prp->ctxsz;
4023 g->ty.ht_type.tp_base = gprp_pytype;
03ed9abb 4024 Py_INCREF(gprp_pytype);
24b3d57b
MW		 4025 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
4026 Py_TPFLAGS_BASETYPE |
4027 Py_TPFLAGS_HEAPTYPE);
4028 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
4029 g->ty.ht_type.tp_free = 0;
4030 g->ty.ht_type.tp_new = gprp_pynew;
dc075750 4031 typeready(&g->ty.ht_type);
03ed9abb
MW		 4032 return ((PyObject *)g);
4033}
4034
4035static PyObject *gcpget_name(PyObject *me, void *hunoz)
2135a6d3 4036 { return (TEXT_FROMSTR(GCPRP_PRP(me)->name)); }
03ed9abb
MW		 4037static PyObject *gcpget_keysz(PyObject *me, void *hunoz)
4038 { return (keysz_pywrap(GCPRP_PRP(me)->keysz)); }
4039static PyObject *gcpget_blksz(PyObject *me, void *hunoz)
4040 { return (PyInt_FromLong(GCPRP_PRP(me)->blksz)); }
4041
4042static PyObject *gpmeth_encrypt(PyObject *me, PyObject *arg)
4043{
67c75893 4044 struct bin m;
03ed9abb
MW		 4045 PyObject *rc = 0;
4046
67c75893
MW		 4047 if (!PyArg_ParseTuple(arg, "O&:encrypt", convbin, &m)) goto end;
4048 if (m.sz != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
4049 rc = bytestring_pywrap(0, m.sz);
2135a6d3 4050 GPRP_PRP(me)->eblk(GPRP_CTX(me), m.p, BIN_PTR(rc));
03ed9abb
MW		 4051end:
4052 return (rc);
4053}
4054
4055static PyObject *gpmeth_decrypt(PyObject *me, PyObject *arg)
4056{
67c75893 4057 struct bin c;
03ed9abb
MW		 4058 PyObject *rc = 0;
4059
67c75893
MW		 4060 if (!PyArg_ParseTuple(arg, "O&:decrypt", convbin, &c)) goto end;
4061 if (c.sz != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
4062 rc = bytestring_pywrap(0, c.sz);
2135a6d3 4063 GPRP_PRP(me)->dblk(GPRP_CTX(me), c.p, BIN_PTR(rc));
03ed9abb
MW		 4064end:
4065 return (rc);
4066}
4067
c90f712e 4068static const PyGetSetDef gcprp_pygetset[] = {
03ed9abb 4069#define GETSETNAME(op, name) gcp##op##_##name
d96c882e
MW		 4070 GET (keysz, "CP.keysz -> acceptable key sizes")
4071 GET (blksz, "CP.blksz -> block size")
4072 GET (name, "CP.name -> name of this kind of PRP")
03ed9abb
MW		 4073#undef GETSETNAME
4074 { 0 }
4075};
4076
c90f712e 4077static const PyMethodDef gprp_pymethods[] = {
03ed9abb 4078#define METHNAME(name) gpmeth_##name
d96c882e
MW		 4079 METH (encrypt, "P.encrypt(PT) -> CT")
4080 METH (decrypt, "P.decrypt(CT) -> PT")
03ed9abb
MW		 4081#undef METHNAME
4082 { 0 }
4083};
4084
c263b05c 4085static const PyTypeObject gcprp_pytype_skel = {
591bf41b 4086 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 4087 "GCPRP", /* @tp_name@ */
03ed9abb
MW		 4088 sizeof(gcprp_pyobj), /* @tp_basicsize@ */
4089 0, /* @tp_itemsize@ */
4090
4091 0, /* @tp_dealloc@ */
4092 0, /* @tp_print@ */
4093 0, /* @tp_getattr@ */
4094 0, /* @tp_setattr@ */
4095 0, /* @tp_compare@ */
4096 0, /* @tp_repr@ */
4097 0, /* @tp_as_number@ */
4098 0, /* @tp_as_sequence@ */
4099 0, /* @tp_as_mapping@ */
4100 0, /* @tp_hash@ */
4101 0, /* @tp_call@ */
4102 0, /* @tp_str@ */
4103 0, /* @tp_getattro@ */
4104 0, /* @tp_setattro@ */
4105 0, /* @tp_as_buffer@ */
4106 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
4107 Py_TPFLAGS_BASETYPE,
4108
4109 /* @tp_doc@ */
d96c882e 4110 "Pseudorandom permutation metaclass.",
03ed9abb
MW		 4111
4112 0, /* @tp_traverse@ */
4113 0, /* @tp_clear@ */
4114 0, /* @tp_richcompare@ */
4115 0, /* @tp_weaklistoffset@ */
4116 0, /* @tp_iter@ */
4117 0, /* @tp_iternext@ */
4118 0, /* @tp_methods@ */
4119 0, /* @tp_members@ */
c90f712e 4120 PYGETSET(gcprp), /* @tp_getset@ */
03ed9abb
MW		 4121 0, /* @tp_base@ */
4122 0, /* @tp_dict@ */
4123 0, /* @tp_descr_get@ */
4124 0, /* @tp_descr_set@ */
4125 0, /* @tp_dictoffset@ */
4126 0, /* @tp_init@ */
4127 PyType_GenericAlloc, /* @tp_alloc@ */
4128 abstract_pynew, /* @tp_new@ */
4129 0, /* @tp_free@ */
4130 0 /* @tp_is_gc@ */
4131};
4132
c263b05c 4133static const PyTypeObject gprp_pytype_skel = {
591bf41b 4134 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 4135 "GPRP", /* @tp_name@ */
03ed9abb
MW		 4136 sizeof(gprp_pyobj), /* @tp_basicsize@ */
4137 0, /* @tp_itemsize@ */
4138
4139 gprp_pydealloc, /* @tp_dealloc@ */
4140 0, /* @tp_print@ */
4141 0, /* @tp_getattr@ */
4142 0, /* @tp_setattr@ */
4143 0, /* @tp_compare@ */
4144 0, /* @tp_repr@ */
4145 0, /* @tp_as_number@ */
4146 0, /* @tp_as_sequence@ */
4147 0, /* @tp_as_mapping@ */
4148 0, /* @tp_hash@ */
4149 0, /* @tp_call@ */
4150 0, /* @tp_str@ */
4151 0, /* @tp_getattro@ */
4152 0, /* @tp_setattro@ */
4153 0, /* @tp_as_buffer@ */
4154 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
4155 Py_TPFLAGS_BASETYPE,
4156
4157 /* @tp_doc@ */
d96c882e 4158 "Pseudorandom permutation, abstract base class.",
03ed9abb
MW		 4159
4160 0, /* @tp_traverse@ */
4161 0, /* @tp_clear@ */
4162 0, /* @tp_richcompare@ */
4163 0, /* @tp_weaklistoffset@ */
4164 0, /* @tp_iter@ */
4165 0, /* @tp_iternext@ */
c90f712e 4166 PYMETHODS(gprp), /* @tp_methods@ */
03ed9abb
MW		 4167 0, /* @tp_members@ */
4168 0, /* @tp_getset@ */
4169 0, /* @tp_base@ */
4170 0, /* @tp_dict@ */
4171 0, /* @tp_descr_get@ */
4172 0, /* @tp_descr_set@ */
4173 0, /* @tp_dictoffset@ */
4174 0, /* @tp_init@ */
4175 PyType_GenericAlloc, /* @tp_alloc@ */
4176 abstract_pynew, /* @tp_new@ */
4177 0, /* @tp_free@ */
4178 0 /* @tp_is_gc@ */
4179};
4180
d7ab1bab 4181/*----- Main code ---------------------------------------------------------*/
4182
810542b0
MW		 4183static const struct nameval consts[] = {
4184 CONST(AEADF_PCHSZ), CONST(AEADF_PCMSZ), CONST(AEADF_PCTSZ),
4185 CONST(AEADF_AADNDEP), CONST(AEADF_AADFIRST), CONST(AEADF_NOAAD),
a29f5426
MW		 4186 CONST(STRBF_I), CONST(STRBF_A), CONST(STRBF_C), CONST(STRBF_T),
4187 CONST(STRBF_M), CONST(STROBE_KEY), CONST(STROBE_AD), CONST(STROBE_PRF),
4188 CONST(STROBE_CLROUT), CONST(STROBE_CLRIN), CONST(STROBE_ENCOUT),
4189 CONST(STROBE_ENCIN), CONST(STRBRL_UNDCD), CONST(STRBRL_INIT),
4190 CONST(STRBRL_RESP),
810542b0
MW		 4191 { 0 }
4192};
4193
c90f712e 4194static const PyMethodDef methods[] = {
89157adc 4195#define METHNAME(func) meth_##func
d96c882e
MW		 4196#define METH_HDANCE(hdance, HDance) METH(hdance##_prf, \
4197 "" #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
a75e68c9
MW		 4198 METH_HDANCE(hsalsa20, "HSalsa20")
4199 METH_HDANCE(hsalsa2012, "HSalsa20/12")
4200 METH_HDANCE(hsalsa208, "HSalsa20/8")
4201 METH_HDANCE(hchacha20, "HChaCha20")
4202 METH_HDANCE(hchacha12, "HChaCha12")
4203 METH_HDANCE(hchacha8, "HChaCha8")
4204#undef METH_DANCE
89157adc
MW		 4205#undef METHNAME
4206 { 0 }
4207};
4208
d7ab1bab 4209void algorithms_pyinit(void)
4210{
4211 INITTYPE(keysz, root);
4212 INITTYPE(keyszany, keysz);
4213 INITTYPE(keyszrange, keysz);
4214 INITTYPE(keyszset, keysz);
4215 INITTYPE(gccipher, type);
4216 INITTYPE(gcipher, root);
bebf03ab
MW		 4217 INITTYPE(gcaead, type);
4218 INITTYPE(gaeadkey, root);
4219 INITTYPE(gcaeadaad, type);
4220 INITTYPE(gaeadaad, root);
4221 INITTYPE(gcaeadenc, type);
4222 INITTYPE(gaeadenc, root);
4223 INITTYPE(gcaeaddec, type);
4224 INITTYPE(gaeaddec, root);
d7ab1bab 4225 INITTYPE(gchash, type);
4226 INITTYPE(ghash, root);
4227 INITTYPE(gcmac, type);
4228 INITTYPE(gmac, type);
4229 INITTYPE(gmhash, ghash);
204d480b
MW		 4230 INITTYPE(poly1305cls, type);
4231 INITTYPE_META(poly1305key, type, poly1305cls);
4232 INITTYPE(poly1305hash, root);
b35fdbe6 4233 INITTYPE(kxvik, root);
6bd22b53
MW		 4234 INITTYPE(shake, root);
4235 INITTYPE(shake128, shake);
4236 INITTYPE(shake256, shake);
668b5f54
MW		 4237 INITTYPE(kmac, shake);
4238 INITTYPE(kmac128, kmac);
4239 INITTYPE(kmac256, kmac);
a29f5426 4240 INITTYPE(strobe, root);
03ed9abb
MW		 4241 INITTYPE(gcprp, type);
4242 INITTYPE(gprp, root);
89157adc 4243 addmethods(methods);
d7ab1bab 4244}
4245
03ed9abb 4246#define gcprp prpinfo
a539ffb8
MW		 4247#define CLASS_TABLES(_) _(cipher) _(aead) _(hash) _(mac) _(prp)
4248#define TABLE_FNS(pre) \
4249 static const char *pre##_namefn(const void *p) \
4250 { const gc##pre *const *cls = p; return (*cls ? (*cls)->name : 0); } \
4251 static PyObject *pre##_valfn(const void *p) \
4252 { gc##pre *const*cls = p; return (gc##pre##_pywrap(*cls)); }
4253CLASS_TABLES(TABLE_FNS)
d7ab1bab 4254
4255void algorithms_pyinsert(PyObject *mod)
4256{
4257 PyObject *d;
4258 INSERT("KeySZ", keysz_pytype);
4259 INSERT("KeySZAny", keyszany_pytype);
4260 INSERT("KeySZRange", keyszrange_pytype);
4261 INSERT("KeySZSet", keyszset_pytype);
4262 INSERT("GCCipher", gccipher_pytype);
4263 INSERT("GCipher", gcipher_pytype);
a539ffb8
MW		 4264 INSERT("gcciphers", make_algtab(gciphertab, sizeof(gccipher *),
4265 cipher_namefn, cipher_valfn));
bebf03ab
MW		 4266 INSERT("GCAEAD", gcaead_pytype);
4267 INSERT("GAEKey", gaeadkey_pytype);
4268 INSERT("GAEAADClass", gcaeadaad_pytype);
4269 INSERT("GAEAAD", gaeadaad_pytype);
4270 INSERT("GAEEncClass", gcaeadenc_pytype);
4271 INSERT("GAEEnc", gaeadenc_pytype);
4272 INSERT("GAEDecClass", gcaeaddec_pytype);
4273 INSERT("GAEDec", gaeaddec_pytype);
a539ffb8
MW		 4274 INSERT("gcaeads", make_algtab(gaeadtab, sizeof(gcaead *),
4275 aead_namefn, aead_valfn));
d7ab1bab 4276 INSERT("GCHash", gchash_pytype);
4277 INSERT("GHash", ghash_pytype);
a539ffb8
MW		 4278 d = make_algtab(ghashtab, sizeof(gchash *), hash_namefn, hash_valfn);
4279 INSERT("gchashes", d);
4280 sha_pyobj = PyMapping_GetItemString(d, "sha"); Py_INCREF(sha_pyobj);
4281 has160_pyobj = PyMapping_GetItemString(d, "has160"); Py_INCREF(has160_pyobj);
d7ab1bab 4282 INSERT("GCMAC", gcmac_pytype);
4283 INSERT("GMAC", gmac_pytype);
4284 INSERT("GMACHash", gmhash_pytype);
a539ffb8
MW		 4285 INSERT("gcmacs", make_algtab(gmactab, sizeof(gcmac *),
4286 mac_namefn, mac_valfn));
2edb633e 4287 INSERT("_Poly1305Class", poly1305cls_pytype);
204d480b
MW		 4288 INSERT("poly1305", poly1305key_pytype);
4289 INSERT("Poly1305Hash", poly1305hash_pytype);
b35fdbe6 4290 INSERT("Keccak1600", kxvik_pytype);
6bd22b53
MW		 4291 INSERT("Shake", shake_pytype);
4292 INSERT("Shake128", shake128_pytype);
4293 INSERT("Shake256", shake256_pytype);
668b5f54
MW		 4294 INSERT("KMAC", kmac_pytype);
4295 INSERT("KMAC128", kmac128_pytype);
4296 INSERT("KMAC256", kmac256_pytype);
a29f5426 4297 INSERT("Strobe", strobe_pytype);
03ed9abb
MW		 4298 INSERT("GCPRP", gcprp_pytype);
4299 INSERT("GPRP", gprp_pytype);
a539ffb8
MW		 4300 INSERT("gcprps", make_algtab(gprptab, sizeof(gcprp *),
4301 prp_namefn, prp_valfn));
810542b0 4302 setconstants(mod, consts);
d7ab1bab 4303}
4304
4305/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings