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algorithms.c: Slightly simplify integer-hashing methods.
[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"
30#include "algorithms.h"
31
32/*----- Key sizes ---------------------------------------------------------*/
33
34PyTypeObject *keysz_pytype;
35PyTypeObject *keyszany_pytype, *keyszrange_pytype, *keyszset_pytype;
36PyObject *sha_pyobj, *has160_pyobj;
37
cfe23cf8
MW		 38#ifndef KSZ_OPMASK
39# define KSZ_OPMASK 0x1f
40#endif
41
42#ifndef KSZ_16BIT
43# define KSZ_16BIT 0x20
44#endif
45
d7ab1bab 46PyObject *keysz_pywrap(const octet *k)
47{
cfe23cf8
MW		 48 unsigned op = *k++;
49#define ARG(i) (op&KSZ_16BIT ? LOAD16(k + 2*(i)) : k[i])
50 switch (op&KSZ_OPMASK) {
d7ab1bab 51 case KSZ_ANY: {
52 keysz_pyobj *o = PyObject_New(keysz_pyobj, keyszany_pytype);
cfe23cf8 53 o->dfl = ARG(0);
d7ab1bab 54 return ((PyObject *)o);
55 } break;
56 case KSZ_RANGE: {
57 keyszrange_pyobj *o =
b2687a0a 58 PyObject_New(keyszrange_pyobj, keyszrange_pytype);
cfe23cf8
MW		 59 o->dfl = ARG(0);
60 o->min = ARG(1);
61 o->max = ARG(2);
62 o->mod = ARG(3);
d7ab1bab 63 if (!o->mod) o->mod = 1;
64 return ((PyObject *)o);
65 } break;
66 case KSZ_SET: {
67 keyszset_pyobj *o =
b2687a0a 68 PyObject_New(keyszset_pyobj, keyszset_pytype);
d7ab1bab 69 int i, n;
cfe23cf8
MW		 70 o->dfl = ARG(0);
71 for (i = 0; ARG(i); i++) ;
d7ab1bab 72 n = i; o->set = PyTuple_New(n);
73 for (i = 0; i < n; i++)
cfe23cf8 74 PyTuple_SET_ITEM(o->set, i, PyInt_FromLong(ARG(i)));
d7ab1bab 75 return ((PyObject *)o);
76 } break;
77 default:
78 abort();
79 }
cfe23cf8 80#undef ARG
d7ab1bab 81}
82
83static PyObject *keyszany_pynew(PyTypeObject *ty,
84 PyObject *arg, PyObject *kw)
85{
827f89d7 86 static const char *const kwlist[] = { "default", 0 };
d7ab1bab 87 int dfl;
88 keysz_pyobj *o;
89
827f89d7 90 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i:new", KWLIST, &dfl))
d7ab1bab 91 goto end;
92 if (dfl < 0) VALERR("key size cannot be negative");
93 o = (keysz_pyobj *)ty->tp_alloc(ty, 0);
94 o->dfl = dfl;
95 return ((PyObject *)o);
96end:
97 return (0);
98}
99
100static PyObject *keyszrange_pynew(PyTypeObject *ty,
101 PyObject *arg, PyObject *kw)
102{
827f89d7 103 static const char *const kwlist[] = { "default", "min", "max", "mod", 0 };
d7ab1bab 104 int dfl, min = 0, max = 0, mod = 1;
105 keyszrange_pyobj *o;
106
827f89d7 107 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|iii:new", KWLIST,
d7ab1bab 108 &dfl, &min, &max, &mod))
109 goto end;
838ab173
MW		 110 if (dfl < 0 || min < 0) VALERR("key size cannot be negative");
111 if (min > dfl || (max && dfl > max)) VALERR("bad key size bounds");
112 if (mod <= 0 || dfl%mod || min%mod || max%mod)
d7ab1bab 113 VALERR("bad key size modulus");
114 o = (keyszrange_pyobj *)ty->tp_alloc(ty, 0);
115 o->dfl = dfl;
116 o->min = min;
117 o->max = max;
118 o->mod = mod;
119 return ((PyObject *)o);
120end:
121 return (0);
122}
123
124static PyObject *keyszset_pynew(PyTypeObject *ty,
125 PyObject *arg, PyObject *kw)
126{
827f89d7 127 static const char *const kwlist[] = { "default", "set", 0 };
d7ab1bab 128 int dfl, i, n, xx;
129 PyObject *set = 0;
130 PyObject *x = 0, *l = 0;
131 keyszset_pyobj *o = 0;
132
827f89d7 133 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|O:new", KWLIST, &dfl, &set))
d7ab1bab 134 goto end;
135 if (!set) set = PyTuple_New(0);
136 else Py_INCREF(set);
137 if (!PySequence_Check(set)) TYERR("want a sequence");
138 n = PySequence_Size(set);
139 l = PyList_New(0);
140 if (PyErr_Occurred()) goto end;
141 if (dfl < 0) VALERR("key size cannot be negative");
142 x = PyInt_FromLong(dfl);
143 PyList_Append(l, x);
144 Py_DECREF(x);
145 x = 0;
146 for (i = 0; i < n; i++) {
147 if ((x = PySequence_GetItem(set, i)) == 0) goto end;
148 xx = PyInt_AsLong(x);
149 if (PyErr_Occurred()) goto end;
150 if (xx == dfl) continue;
151 if (xx < 0) VALERR("key size cannot be negative");
152 PyList_Append(l, x);
153 Py_DECREF(x);
b2687a0a 154 x = 0;
d7ab1bab 155 }
156 Py_DECREF(set);
157 if ((set = PySequence_Tuple(l)) == 0) goto end;
158 o = (keyszset_pyobj *)ty->tp_alloc(ty, 0);
159 o->dfl = dfl;
160 o->set = set;
161 Py_INCREF(set);
162end:
163 Py_XDECREF(set);
164 Py_XDECREF(l);
165 Py_XDECREF(x);
166 return ((PyObject *)o);
167}
168
169static PyObject *kaget_min(PyObject *me, void *hunoz)
170 { return (PyInt_FromLong(0)); }
171#define kaget_max kaget_min
172
173static PyObject *ksget_min(PyObject *me, void *hunoz)
174{
175 PyObject *set = ((keyszset_pyobj *)me)->set;
176 int i, n, y, x = -1;
177 n = PyTuple_Size(set);
178 for (i = 0; i < n; i++) {
179 y = PyInt_AsLong(PyTuple_GetItem(set, i));
180 if (x == -1 || y < x) x = y;
181 }
182 return (PyInt_FromLong(x));
183}
184
185static PyObject *ksget_max(PyObject *me, void *hunoz)
186{
187 PyObject *set = ((keyszset_pyobj *)me)->set;
188 int i, n, y, x = -1;
189 n = PyTuple_Size(set);
190 for (i = 0; i < n; i++) {
191 y = PyInt_AsLong(PyTuple_GetItem(set, i));
192 if (y > x) x = y;
193 }
194 return (PyInt_FromLong(x));
195}
196
197static PyMemberDef keysz_pymembers[] = {
198#define MEMBERSTRUCT keysz_pyobj
199#define default dfl /* ugh! */
200 MEMBER(default, T_INT, READONLY, "KSZ.default -> default key size")
201#undef default
202#undef MEMBERSTRUCT
203 { 0 }
204};
205
206static PyGetSetDef keyszany_pygetset[] = {
207#define GETSETNAME(op, name) ka##op##_##name
208 GET (min, "KSZ.min -> smallest allowed key size")
209 GET (max, "KSZ.min -> largest allowed key size")
210#undef GETSETNAME
211 { 0 }
212};
213
214static PyMemberDef keyszrange_pymembers[] = {
215#define MEMBERSTRUCT keyszrange_pyobj
216 MEMBER(min, T_INT, READONLY, "KSZ.min -> smallest allowed key size")
217 MEMBER(max, T_INT, READONLY, "KSZ.min -> largest allowed key size")
218 MEMBER(mod, T_INT, READONLY,
219 "KSZ.mod -> key size must be a multiple of this")
220#undef MEMBERSTRUCT
221 { 0 }
222};
223
224static PyGetSetDef keyszset_pygetset[] = {
225#define GETSETNAME(op, name) ks##op##_##name
226 GET (min, "KSZ.min -> smallest allowed key size")
227 GET (max, "KSZ.min -> largest allowed key size")
228#undef GETSETNAME
229 { 0 }
230};
231
232static PyMemberDef keyszset_pymembers[] = {
233#define MEMBERSTRUCT keyszset_pyobj
234 MEMBER(set, T_OBJECT, READONLY, "KSZ.set -> allowed key sizes")
235#undef MEMBERSTRUCT
236 { 0 }
237};
238
239static PyTypeObject keysz_pytype_skel = {
6d4db0bf 240 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 241 "KeySZ", /* @tp_name@ */
d7ab1bab 242 sizeof(keysz_pyobj), /* @tp_basicsize@ */
243 0, /* @tp_itemsize@ */
244
3aa33042 245 0, /* @tp_dealloc@ */
d7ab1bab 246 0, /* @tp_print@ */
247 0, /* @tp_getattr@ */
248 0, /* @tp_setattr@ */
249 0, /* @tp_compare@ */
250 0, /* @tp_repr@ */
251 0, /* @tp_as_number@ */
252 0, /* @tp_as_sequence@ */
253 0, /* @tp_as_mapping@ */
254 0, /* @tp_hash@ */
255 0, /* @tp_call@ */
256 0, /* @tp_str@ */
257 0, /* @tp_getattro@ */
258 0, /* @tp_setattro@ */
259 0, /* @tp_as_buffer@ */
260 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
261 Py_TPFLAGS_BASETYPE,
262
263 /* @tp_doc@ */
06cd26e8 264"Key size constraints. Abstract.",
d7ab1bab 265
266 0, /* @tp_traverse@ */
267 0, /* @tp_clear@ */
268 0, /* @tp_richcompare@ */
269 0, /* @tp_weaklistoffset@ */
270 0, /* @tp_iter@ */
963a6148 271 0, /* @tp_iternext@ */
d7ab1bab 272 0, /* @tp_methods@ */
273 keysz_pymembers, /* @tp_members@ */
274 0, /* @tp_getset@ */
275 0, /* @tp_base@ */
276 0, /* @tp_dict@ */
277 0, /* @tp_descr_get@ */
278 0, /* @tp_descr_set@ */
279 0, /* @tp_dictoffset@ */
280 0, /* @tp_init@ */
281 PyType_GenericAlloc, /* @tp_alloc@ */
282 abstract_pynew, /* @tp_new@ */
3aa33042 283 0, /* @tp_free@ */
d7ab1bab 284 0 /* @tp_is_gc@ */
285};
286
287static PyTypeObject keyszany_pytype_skel = {
6d4db0bf 288 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 289 "KeySZAny", /* @tp_name@ */
d7ab1bab 290 sizeof(keysz_pyobj), /* @tp_basicsize@ */
291 0, /* @tp_itemsize@ */
292
3aa33042 293 0, /* @tp_dealloc@ */
d7ab1bab 294 0, /* @tp_print@ */
295 0, /* @tp_getattr@ */
296 0, /* @tp_setattr@ */
297 0, /* @tp_compare@ */
298 0, /* @tp_repr@ */
299 0, /* @tp_as_number@ */
300 0, /* @tp_as_sequence@ */
301 0, /* @tp_as_mapping@ */
302 0, /* @tp_hash@ */
303 0, /* @tp_call@ */
304 0, /* @tp_str@ */
305 0, /* @tp_getattro@ */
306 0, /* @tp_setattro@ */
307 0, /* @tp_as_buffer@ */
308 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
309 Py_TPFLAGS_BASETYPE,
310
311 /* @tp_doc@ */
06cd26e8
MW		 312"KeySZAny(DEFAULT)\n\
313 Key size constraints. This object imposes no constraints on size.",
d7ab1bab 314
315 0, /* @tp_traverse@ */
316 0, /* @tp_clear@ */
317 0, /* @tp_richcompare@ */
318 0, /* @tp_weaklistoffset@ */
319 0, /* @tp_iter@ */
963a6148 320 0, /* @tp_iternext@ */
d7ab1bab 321 0, /* @tp_methods@ */
322 0, /* @tp_members@ */
323 keyszany_pygetset, /* @tp_getset@ */
324 0, /* @tp_base@ */
325 0, /* @tp_dict@ */
326 0, /* @tp_descr_get@ */
327 0, /* @tp_descr_set@ */
328 0, /* @tp_dictoffset@ */
329 0, /* @tp_init@ */
330 PyType_GenericAlloc, /* @tp_alloc@ */
331 keyszany_pynew, /* @tp_new@ */
3aa33042 332 0, /* @tp_free@ */
d7ab1bab 333 0 /* @tp_is_gc@ */
334};
335
336static PyTypeObject keyszrange_pytype_skel = {
6d4db0bf 337 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 338 "KeySZRange", /* @tp_name@ */
d7ab1bab 339 sizeof(keyszrange_pyobj), /* @tp_basicsize@ */
340 0, /* @tp_itemsize@ */
341
3aa33042 342 0, /* @tp_dealloc@ */
d7ab1bab 343 0, /* @tp_print@ */
344 0, /* @tp_getattr@ */
345 0, /* @tp_setattr@ */
346 0, /* @tp_compare@ */
347 0, /* @tp_repr@ */
348 0, /* @tp_as_number@ */
349 0, /* @tp_as_sequence@ */
350 0, /* @tp_as_mapping@ */
351 0, /* @tp_hash@ */
352 0, /* @tp_call@ */
353 0, /* @tp_str@ */
354 0, /* @tp_getattro@ */
355 0, /* @tp_setattro@ */
356 0, /* @tp_as_buffer@ */
357 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
358 Py_TPFLAGS_BASETYPE,
359
360 /* @tp_doc@ */
06cd26e8
MW		 361"KeySZRange(DEFAULT, [min = 0], [max = 0], [mod = 1])\n\
362 Key size constraints. Key size must be between MIN and MAX inclusive,\n\
363 and be a multiple of MOD.",
d7ab1bab 364
365 0, /* @tp_traverse@ */
366 0, /* @tp_clear@ */
367 0, /* @tp_richcompare@ */
368 0, /* @tp_weaklistoffset@ */
369 0, /* @tp_iter@ */
963a6148 370 0, /* @tp_iternext@ */
d7ab1bab 371 0, /* @tp_methods@ */
372 keyszrange_pymembers, /* @tp_members@ */
373 0, /* @tp_getset@ */
374 0, /* @tp_base@ */
375 0, /* @tp_dict@ */
376 0, /* @tp_descr_get@ */
377 0, /* @tp_descr_set@ */
378 0, /* @tp_dictoffset@ */
379 0, /* @tp_init@ */
380 PyType_GenericAlloc, /* @tp_alloc@ */
381 keyszrange_pynew, /* @tp_new@ */
3aa33042 382 0, /* @tp_free@ */
d7ab1bab 383 0 /* @tp_is_gc@ */
384};
385
386static PyTypeObject keyszset_pytype_skel = {
6d4db0bf 387 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 388 "KeySZSet", /* @tp_name@ */
d7ab1bab 389 sizeof(keyszset_pyobj), /* @tp_basicsize@ */
390 0, /* @tp_itemsize@ */
391
3aa33042 392 0, /* @tp_dealloc@ */
d7ab1bab 393 0, /* @tp_print@ */
394 0, /* @tp_getattr@ */
395 0, /* @tp_setattr@ */
396 0, /* @tp_compare@ */
397 0, /* @tp_repr@ */
398 0, /* @tp_as_number@ */
399 0, /* @tp_as_sequence@ */
400 0, /* @tp_as_mapping@ */
401 0, /* @tp_hash@ */
402 0, /* @tp_call@ */
403 0, /* @tp_str@ */
404 0, /* @tp_getattro@ */
405 0, /* @tp_setattro@ */
406 0, /* @tp_as_buffer@ */
407 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
408 Py_TPFLAGS_BASETYPE,
409
410 /* @tp_doc@ */
06cd26e8
MW		 411"KeySZSet(DEFAULT, SEQ)\n\
412 Key size constraints. Key size must be DEFAULT or one in SEQ.",
d7ab1bab 413
414 0, /* @tp_traverse@ */
415 0, /* @tp_clear@ */
416 0, /* @tp_richcompare@ */
417 0, /* @tp_weaklistoffset@ */
418 0, /* @tp_iter@ */
963a6148 419 0, /* @tp_iternext@ */
d7ab1bab 420 0, /* @tp_methods@ */
421 keyszset_pymembers, /* @tp_members@ */
422 keyszset_pygetset, /* @tp_getset@ */
423 0, /* @tp_base@ */
424 0, /* @tp_dict@ */
425 0, /* @tp_descr_get@ */
426 0, /* @tp_descr_set@ */
427 0, /* @tp_dictoffset@ */
428 0, /* @tp_init@ */
429 PyType_GenericAlloc, /* @tp_alloc@ */
430 keyszset_pynew, /* @tp_new@ */
3aa33042 431 0, /* @tp_free@ */
d7ab1bab 432 0 /* @tp_is_gc@ */
433};
434
89157adc
MW		 435#define KSZCONVOP(op) \
436 static PyObject *meth__KeySZ_##op(PyObject *me, PyObject *arg) \
437 { \
438 double x, y; \
439 if (!PyArg_ParseTuple(arg, "Od:" #op, &me, &x)) return (0); \
440 y = keysz_##op(x); \
441 return (PyFloat_FromDouble(y)); \
442 }
443KSZCONVOP(fromdl)
444KSZCONVOP(fromschnorr)
445KSZCONVOP(fromif)
446KSZCONVOP(fromec)
447KSZCONVOP(todl)
448KSZCONVOP(toschnorr)
449KSZCONVOP(toif)
450KSZCONVOP(toec)
451#undef KSZCONVOP
452
d7ab1bab 453/*----- Symmetric encryption ----------------------------------------------*/
454
455PyTypeObject *gccipher_pytype, *gcipher_pytype;
456
457CONVFUNC(gccipher, gccipher *, GCCIPHER_CC)
458CONVFUNC(gcipher, gcipher *, GCIPHER_C)
459
460PyObject *gcipher_pywrap(PyObject *cobj, gcipher *c, unsigned f)
461{
462 gcipher_pyobj *g;
463 if (!cobj) cobj = gccipher_pywrap((/*unconst*/ gccipher *)GC_CLASS(c));
464 else Py_INCREF(cobj);
465 g = PyObject_NEW(gcipher_pyobj, (PyTypeObject *)cobj);
466 g->c = c;
467 g->f = f;
b2687a0a 468 return ((PyObject *)g);
d7ab1bab 469}
470
471static PyObject *gcipher_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
472{
827f89d7 473 static const char *const kwlist[] = { "k", 0 };
d7ab1bab 474 char *k;
6b54260d 475 Py_ssize_t sz;
d7ab1bab 476
827f89d7 477 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &k, &sz))
d7ab1bab 478 goto end;
479 if (keysz(sz, GCCIPHER_CC(ty)->keysz) != sz) VALERR("bad key length");
480 return (gcipher_pywrap((PyObject *)ty,
481 GC_INIT(GCCIPHER_CC(ty), k, sz),
482 f_freeme));
483end:
b2687a0a 484 return (0);
d7ab1bab 485}
486
487PyObject *gccipher_pywrap(gccipher *cc)
488{
df9f8366 489 gccipher_pyobj *g = newtype(gccipher_pytype, 0, cc->name);
d7ab1bab 490 g->cc = cc;
24b3d57b
MW		 491 g->ty.ht_type.tp_basicsize = sizeof(gcipher_pyobj);
492 g->ty.ht_type.tp_base = gcipher_pytype;
d7ab1bab 493 Py_INCREF(gcipher_pytype);
24b3d57b
MW		 494 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
495 Py_TPFLAGS_BASETYPE |
496 Py_TPFLAGS_HEAPTYPE);
497 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
498 g->ty.ht_type.tp_free = 0;
499 g->ty.ht_type.tp_new = gcipher_pynew;
dc075750 500 typeready(&g->ty.ht_type);
d7ab1bab 501 return ((PyObject *)g);
502}
503
504static void gcipher_pydealloc(PyObject *me)
505{
506 if (GCIPHER_F(me) & f_freeme)
507 GC_DESTROY(GCIPHER_C(me));
508 Py_DECREF(me->ob_type);
3aa33042 509 FREEOBJ(me);
d7ab1bab 510}
511
512static PyObject *gccget_name(PyObject *me, void *hunoz)
513 { return (PyString_FromString(GCCIPHER_CC(me)->name)); }
514
515static PyObject *gccget_keysz(PyObject *me, void *hunoz)
516 { return (keysz_pywrap(GCCIPHER_CC(me)->keysz)); }
517
518static PyObject *gccget_blksz(PyObject *me, void *hunoz)
519 { return (PyInt_FromLong(GCCIPHER_CC(me)->blksz)); }
520
521static PyObject *gcmeth_encrypt(PyObject *me, PyObject *arg)
522{
523 char *p;
6b54260d 524 Py_ssize_t sz;
d7ab1bab 525 PyObject *rc = 0;
526
527 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &sz)) return (0);
528 rc = bytestring_pywrap(0, sz);
529 GC_ENCRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz);
530 return (rc);
531}
532
533static PyObject *gcmeth_enczero(PyObject *me, PyObject *arg)
534{
535 char *p;
536 int sz;
537 PyObject *rc = 0;
538
539 if (!PyArg_ParseTuple(arg, "i:enczero", &sz)) return (0);
540 rc = bytestring_pywrap(0, sz);
541 p = PyString_AS_STRING(rc);
542 memset(p, 0, sz);
543 GC_ENCRYPT(GCIPHER_C(me), p, p, sz);
544 return (rc);
545}
546
547static PyObject *gcmeth_decrypt(PyObject *me, PyObject *arg)
548{
549 char *p;
6b54260d 550 Py_ssize_t sz;
d7ab1bab 551 PyObject *rc = 0;
552
553 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &sz)) return (0);
554 rc = bytestring_pywrap(0, sz);
555 GC_DECRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz);
556 return (rc);
557}
558
559static PyObject *gcmeth_deczero(PyObject *me, PyObject *arg)
560{
561 char *p;
562 int sz;
563 PyObject *rc = 0;
564
565 if (!PyArg_ParseTuple(arg, "i:deczero", &sz)) return (0);
566 rc = bytestring_pywrap(0, sz);
567 p = PyString_AS_STRING(rc);
568 memset(p, 0, sz);
569 GC_DECRYPT(GCIPHER_C(me), p, p, sz);
570 return (rc);
571}
572
573static PyObject *gcmeth_setiv(PyObject *me, PyObject *arg)
574{
575 char *p;
6b54260d 576 Py_ssize_t sz;
d7ab1bab 577
578 if (!PyArg_ParseTuple(arg, "s#:setiv", &p, &sz)) goto end;
30eef666 579 if (!GCIPHER_C(me)->ops->setiv) VALERR("`setiv' not supported");
d7ab1bab 580 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
581 if (sz != GC_CLASS(GCIPHER_C(me))->blksz) VALERR("bad IV length");
582 GC_SETIV(GCIPHER_C(me), p);
583 RETURN_ME;
584end:
585 return (0);
586}
587
588static PyObject *gcmeth_bdry(PyObject *me, PyObject *arg)
589{
590 if (!PyArg_ParseTuple(arg, ":bdry")) goto end;
30eef666 591 if (!GCIPHER_C(me)->ops->bdry) VALERR("`bdry' not supported");
d7ab1bab 592 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
593 GC_BDRY(GCIPHER_C(me));
594 RETURN_ME;
595end:
596 return (0);
597}
598
599static PyGetSetDef gccipher_pygetset[] = {
600#define GETSETNAME(op, name) gcc##op##_##name
601 GET (keysz, "CC.keysz -> acceptable key sizes")
602 GET (blksz, "CC.blksz -> block size, or zero")
603 GET (name, "CC.name -> name of this kind of cipher")
604#undef GETSETNAME
605 { 0 }
606};
607
608static PyMethodDef gcipher_pymethods[] = {
609#define METHNAME(name) gcmeth_##name
610 METH (encrypt, "C.encrypt(PT) -> CT")
611 METH (enczero, "C.enczero(N) -> CT")
612 METH (decrypt, "C.decrypt(CT) -> PT")
613 METH (deczero, "C.deczero(N) -> PT")
614 METH (setiv, "C.setiv(IV)")
615 METH (bdry, "C.bdry()")
616#undef METHNAME
617 { 0 }
618};
619
620static PyTypeObject gccipher_pytype_skel = {
6d4db0bf 621 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 622 "GCCipher", /* @tp_name@ */
d7ab1bab 623 sizeof(gccipher_pyobj), /* @tp_basicsize@ */
624 0, /* @tp_itemsize@ */
625
626 0, /* @tp_dealloc@ */
627 0, /* @tp_print@ */
628 0, /* @tp_getattr@ */
629 0, /* @tp_setattr@ */
630 0, /* @tp_compare@ */
631 0, /* @tp_repr@ */
632 0, /* @tp_as_number@ */
633 0, /* @tp_as_sequence@ */
634 0, /* @tp_as_mapping@ */
635 0, /* @tp_hash@ */
636 0, /* @tp_call@ */
637 0, /* @tp_str@ */
638 0, /* @tp_getattro@ */
639 0, /* @tp_setattro@ */
640 0, /* @tp_as_buffer@ */
641 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
642 Py_TPFLAGS_BASETYPE,
643
644 /* @tp_doc@ */
645"Symmetric cipher metaclass.",
646
647 0, /* @tp_traverse@ */
648 0, /* @tp_clear@ */
649 0, /* @tp_richcompare@ */
650 0, /* @tp_weaklistoffset@ */
651 0, /* @tp_iter@ */
963a6148 652 0, /* @tp_iternext@ */
d7ab1bab 653 0, /* @tp_methods@ */
654 0, /* @tp_members@ */
655 gccipher_pygetset, /* @tp_getset@ */
656 0, /* @tp_base@ */
657 0, /* @tp_dict@ */
658 0, /* @tp_descr_get@ */
659 0, /* @tp_descr_set@ */
660 0, /* @tp_dictoffset@ */
661 0, /* @tp_init@ */
662 PyType_GenericAlloc, /* @tp_alloc@ */
663 abstract_pynew, /* @tp_new@ */
3aa33042 664 0, /* @tp_free@ */
d7ab1bab 665 0 /* @tp_is_gc@ */
666};
667
668static PyTypeObject gcipher_pytype_skel = {
6d4db0bf 669 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 670 "GCipher", /* @tp_name@ */
d7ab1bab 671 sizeof(gcipher_pyobj), /* @tp_basicsize@ */
672 0, /* @tp_itemsize@ */
673
674 gcipher_pydealloc, /* @tp_dealloc@ */
675 0, /* @tp_print@ */
676 0, /* @tp_getattr@ */
677 0, /* @tp_setattr@ */
678 0, /* @tp_compare@ */
679 0, /* @tp_repr@ */
680 0, /* @tp_as_number@ */
681 0, /* @tp_as_sequence@ */
682 0, /* @tp_as_mapping@ */
683 0, /* @tp_hash@ */
684 0, /* @tp_call@ */
685 0, /* @tp_str@ */
686 0, /* @tp_getattro@ */
687 0, /* @tp_setattro@ */
688 0, /* @tp_as_buffer@ */
689 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
690 Py_TPFLAGS_BASETYPE,
691
692 /* @tp_doc@ */
693"Symmetric cipher, abstract base class.",
694
695 0, /* @tp_traverse@ */
696 0, /* @tp_clear@ */
697 0, /* @tp_richcompare@ */
698 0, /* @tp_weaklistoffset@ */
699 0, /* @tp_iter@ */
963a6148 700 0, /* @tp_iternext@ */
d7ab1bab 701 gcipher_pymethods, /* @tp_methods@ */
702 0, /* @tp_members@ */
703 0, /* @tp_getset@ */
704 0, /* @tp_base@ */
705 0, /* @tp_dict@ */
706 0, /* @tp_descr_get@ */
707 0, /* @tp_descr_set@ */
708 0, /* @tp_dictoffset@ */
709 0, /* @tp_init@ */
710 PyType_GenericAlloc, /* @tp_alloc@ */
711 abstract_pynew, /* @tp_new@ */
3aa33042 712 0, /* @tp_free@ */
d7ab1bab 713 0 /* @tp_is_gc@ */
714};
715
716/*----- Hash functions ----------------------------------------------------*/
717
718PyTypeObject *gchash_pytype, *ghash_pytype;
719
720CONVFUNC(gchash, gchash *, GCHASH_CH)
721CONVFUNC(ghash, ghash *, GHASH_H)
722
723static PyObject *ghash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
724{
827f89d7
MW		 725 static const char *const kwlist[] = { 0 };
726 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST))
d7ab1bab 727 goto end;
728 return (ghash_pywrap((PyObject *)ty, GH_INIT(GCHASH_CH(ty)), f_freeme));
729end:
b2687a0a 730 return (0);
d7ab1bab 731}
732
733PyObject *gchash_pywrap(gchash *ch)
734{
df9f8366 735 gchash_pyobj *g = newtype(gchash_pytype, 0, ch->name);
d7ab1bab 736 g->ch = ch;
24b3d57b
MW		 737 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
738 g->ty.ht_type.tp_base = ghash_pytype;
d7ab1bab 739 Py_INCREF(ghash_pytype);
24b3d57b
MW		 740 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
741 Py_TPFLAGS_BASETYPE |
742 Py_TPFLAGS_HEAPTYPE);
743 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
744 g->ty.ht_type.tp_free = 0;
745 g->ty.ht_type.tp_new = ghash_pynew;
dc075750 746 typeready(&g->ty.ht_type);
d7ab1bab 747 return ((PyObject *)g);
748}
749
750PyObject *ghash_pywrap(PyObject *cobj, ghash *h, unsigned f)
751{
752 ghash_pyobj *g;
753 if (!cobj) cobj = gchash_pywrap((/*unconst*/ gchash *)GH_CLASS(h));
754 else Py_INCREF(cobj);
755 g = PyObject_NEW(ghash_pyobj, (PyTypeObject *)cobj);
756 g->h = h;
757 g->f = f;
b2687a0a 758 return ((PyObject *)g);
d7ab1bab 759}
760
761static void ghash_pydealloc(PyObject *me)
762{
763 if (GHASH_F(me) & f_freeme)
764 GH_DESTROY(GHASH_H(me));
765 Py_DECREF(me->ob_type);
3aa33042 766 FREEOBJ(me);
d7ab1bab 767}
768
769static PyObject *gchget_name(PyObject *me, void *hunoz)
770 { return (PyString_FromString(GCHASH_CH(me)->name)); }
771
772static PyObject *gchget_hashsz(PyObject *me, void *hunoz)
773 { return (PyInt_FromLong(GCHASH_CH(me)->hashsz)); }
774
775static PyObject *gchget_bufsz(PyObject *me, void *hunoz)
776 { return (PyInt_FromLong(GCHASH_CH(me)->bufsz)); }
777
778static PyObject *ghmeth_hash(PyObject *me, PyObject *arg)
779{
780 char *p;
6b54260d 781 Py_ssize_t sz;
d7ab1bab 782 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
783 GH_HASH(GHASH_H(me), p, sz);
784 RETURN_ME;
785}
786
46e6ad89 787#define GHMETH_HASHU_(n, W, w) \
788 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
789 { \
790 uint##n x; \
0e5c668c 791 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
46e6ad89 792 GH_HASHU##W(GHASH_H(me), x); \
793 RETURN_ME; \
46e6ad89 794 }
795DOUINTCONV(GHMETH_HASHU_)
796
797#define GHMETH_HASHBUF_(n, W, w) \
798 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
799 { \
800 char *p; \
6b54260d 801 Py_ssize_t sz; \
46e6ad89 802 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
803 if (sz > MASK##n) TYERR("string too long"); \
804 GH_HASHBUF##W(GHASH_H(me), p, sz); \
805 RETURN_ME; \
806 end: \
807 return (0); \
808 }
809DOUINTCONV(GHMETH_HASHBUF_)
810
811static PyObject *ghmeth_hashstrz(PyObject *me, PyObject *arg)
812{
813 char *p;
814 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
815 GH_HASHSTRZ(GHASH_H(me), p);
816 RETURN_ME;
817}
818
07bcd768
MW		 819static PyObject *ghmeth_done(PyObject *me, PyObject *arg)
820{
821 ghash *g;
822 PyObject *rc;
823 if (!PyArg_ParseTuple(arg, ":done")) return (0);
824 g = GH_COPY(GHASH_H(me));
825 rc = bytestring_pywrap(0, g->ops->c->hashsz);
826 GH_DONE(g, PyString_AS_STRING(rc));
827 GH_DESTROY(g);
828 return (rc);
829}
830
831static PyGetSetDef gchash_pygetset[] = {
832#define GETSETNAME(op, name) gch##op##_##name
833 GET (bufsz, "CH.bufsz -> hash buffer size, or zero")
834 GET (hashsz, "CH.hashsz -> hash output size")
835 GET (name, "CH.name -> name of this kind of hash")
836#undef GETSETNAME
837 { 0 }
838};
839
d7ab1bab 840static PyMethodDef ghash_pymethods[] = {
841#define METHNAME(name) ghmeth_##name
842 METH (hash, "H.hash(M)")
46e6ad89 843#define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
844 DOUINTCONV(METHU_)
07bcd768 845#undef METHU_
46e6ad89 846#define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
847 DOUINTCONV(METHBUF_)
07bcd768 848#undef METHBUF_
46e6ad89 849 METH (hashstrz, "H.hashstrz(STRING)")
d7ab1bab 850 METH (done, "H.done() -> HASH")
851#undef METHNAME
852 { 0 }
853};
854
855static PyTypeObject gchash_pytype_skel = {
6d4db0bf 856 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 857 "GCHash", /* @tp_name@ */
d7ab1bab 858 sizeof(gchash_pyobj), /* @tp_basicsize@ */
859 0, /* @tp_itemsize@ */
860
861 0, /* @tp_dealloc@ */
862 0, /* @tp_print@ */
863 0, /* @tp_getattr@ */
864 0, /* @tp_setattr@ */
865 0, /* @tp_compare@ */
866 0, /* @tp_repr@ */
867 0, /* @tp_as_number@ */
868 0, /* @tp_as_sequence@ */
869 0, /* @tp_as_mapping@ */
870 0, /* @tp_hash@ */
871 0, /* @tp_call@ */
872 0, /* @tp_str@ */
873 0, /* @tp_getattro@ */
874 0, /* @tp_setattro@ */
875 0, /* @tp_as_buffer@ */
876 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
877 Py_TPFLAGS_BASETYPE,
878
879 /* @tp_doc@ */
880"Hash function metaclass.",
881
882 0, /* @tp_traverse@ */
883 0, /* @tp_clear@ */
884 0, /* @tp_richcompare@ */
885 0, /* @tp_weaklistoffset@ */
886 0, /* @tp_iter@ */
963a6148 887 0, /* @tp_iternext@ */
d7ab1bab 888 0, /* @tp_methods@ */
889 0, /* @tp_members@ */
890 gchash_pygetset, /* @tp_getset@ */
891 0, /* @tp_base@ */
892 0, /* @tp_dict@ */
893 0, /* @tp_descr_get@ */
894 0, /* @tp_descr_set@ */
895 0, /* @tp_dictoffset@ */
896 0, /* @tp_init@ */
897 PyType_GenericAlloc, /* @tp_alloc@ */
898 abstract_pynew, /* @tp_new@ */
3aa33042 899 0, /* @tp_free@ */
d7ab1bab 900 0 /* @tp_is_gc@ */
901};
902
903static PyTypeObject ghash_pytype_skel = {
6d4db0bf 904 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 905 "GHash", /* @tp_name@ */
d7ab1bab 906 sizeof(ghash_pyobj), /* @tp_basicsize@ */
907 0, /* @tp_itemsize@ */
908
909 ghash_pydealloc, /* @tp_dealloc@ */
910 0, /* @tp_print@ */
911 0, /* @tp_getattr@ */
912 0, /* @tp_setattr@ */
913 0, /* @tp_compare@ */
914 0, /* @tp_repr@ */
915 0, /* @tp_as_number@ */
916 0, /* @tp_as_sequence@ */
917 0, /* @tp_as_mapping@ */
918 0, /* @tp_hash@ */
919 0, /* @tp_call@ */
920 0, /* @tp_str@ */
921 0, /* @tp_getattro@ */
922 0, /* @tp_setattro@ */
923 0, /* @tp_as_buffer@ */
924 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
925 Py_TPFLAGS_BASETYPE,
926
927 /* @tp_doc@ */
928"Hash function, abstract base class.",
929
930 0, /* @tp_traverse@ */
931 0, /* @tp_clear@ */
932 0, /* @tp_richcompare@ */
933 0, /* @tp_weaklistoffset@ */
934 0, /* @tp_iter@ */
963a6148 935 0, /* @tp_iternext@ */
d7ab1bab 936 ghash_pymethods, /* @tp_methods@ */
937 0, /* @tp_members@ */
938 0, /* @tp_getset@ */
939 0, /* @tp_base@ */
940 0, /* @tp_dict@ */
941 0, /* @tp_descr_get@ */
942 0, /* @tp_descr_set@ */
943 0, /* @tp_dictoffset@ */
944 0, /* @tp_init@ */
945 PyType_GenericAlloc, /* @tp_alloc@ */
946 abstract_pynew, /* @tp_new@ */
3aa33042 947 0, /* @tp_free@ */
d7ab1bab 948 0 /* @tp_is_gc@ */
949};
950
951/*----- Message authentication --------------------------------------------*/
952
953PyTypeObject *gcmac_pytype, *gmac_pytype, *gmhash_pytype;
954
955CONVFUNC(gcmac, gcmac *, GCMAC_CM)
956CONVFUNC(gmac, gmac *, GMAC_M)
957CONVFUNC(gmhash, ghash *, GHASH_H)
958
959static PyObject *gmac_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
960{
827f89d7 961 static const char *const kwlist[] = { "k", 0 };
d7ab1bab 962 char *k;
6b54260d 963 Py_ssize_t sz;
d7ab1bab 964
827f89d7 965 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &k, &sz))
d7ab1bab 966 goto end;
967 if (keysz(sz, GCMAC_CM(ty)->keysz) != sz) VALERR("bad key length");
968 return (gmac_pywrap((PyObject *)ty,
969 GM_KEY(GCMAC_CM(ty), k, sz),
970 f_freeme));
971end:
b2687a0a 972 return (0);
d7ab1bab 973}
974
975static PyObject *gmhash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
976{
827f89d7 977 static const char *const kwlist[] = { 0 };
d7ab1bab 978 ghash_pyobj *g;
979
827f89d7 980 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST)) return (0);
d7ab1bab 981 g = PyObject_NEW(ghash_pyobj, ty);
982 g->h = GM_INIT(GMAC_M(ty));
983 g->f = f_freeme;
984 Py_INCREF(ty);
985 return ((PyObject *)g);
986}
987
988PyObject *gcmac_pywrap(gcmac *cm)
989{
df9f8366 990 gcmac_pyobj *g = newtype(gcmac_pytype, 0, cm->name);
d7ab1bab 991 g->cm = cm;
24b3d57b
MW		 992 g->ty.ht_type.tp_basicsize = sizeof(gmac_pyobj);
993 g->ty.ht_type.tp_base = gmac_pytype;
d7ab1bab 994 Py_INCREF(gmac_pytype);
24b3d57b
MW		 995 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
996 Py_TPFLAGS_BASETYPE |
997 Py_TPFLAGS_HEAPTYPE);
998 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
999 g->ty.ht_type.tp_free = 0;
1000 g->ty.ht_type.tp_new = gmac_pynew;
dc075750 1001 typeready(&g->ty.ht_type);
d7ab1bab 1002 return ((PyObject *)g);
1003}
1004
1005PyObject *gmac_pywrap(PyObject *cobj, gmac *m, unsigned f)
1006{
1007 gmac_pyobj *g;
1008 if (!cobj) cobj = gcmac_pywrap((/*unconst*/ gcmac *)GM_CLASS(m));
1009 else Py_INCREF(cobj);
df9f8366 1010 g = newtype((PyTypeObject *)cobj, 0, 0);
828b1388 1011 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
24b3d57b
MW		 1012 g->ty.ht_name = PyString_FromFormat("%s(keyed)", m->ops->c->name);
1013 g->ty.ht_type.tp_name = PyString_AS_STRING(g->ty.ht_name);
1014 g->ty.ht_type.tp_base = gmhash_pytype;
d7ab1bab 1015 Py_INCREF(gmac_pytype);
24b3d57b
MW		 1016 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1017 Py_TPFLAGS_BASETYPE |
1018 Py_TPFLAGS_HEAPTYPE);
1019 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1020 g->ty.ht_type.tp_free = 0;
1021 g->ty.ht_type.tp_new = gmhash_pynew;
dc075750 1022 typeready(&g->ty.ht_type);
d7ab1bab 1023 g->m = m;
1024 g->f = f;
b2687a0a 1025 return ((PyObject *)g);
d7ab1bab 1026}
1027
1028static void gmac_pydealloc(PyObject *me)
1029{
1030 if (GMAC_F(me) & f_freeme)
1031 GM_DESTROY(GMAC_M(me));
1032 Py_DECREF(me->ob_type);
d7ab1bab 1033 PyType_Type.tp_dealloc(me);
1034}
1035
1036static PyObject *gcmget_name(PyObject *me, void *hunoz)
1037 { return (PyString_FromString(GCMAC_CM(me)->name)); }
1038
1039static PyObject *gcmget_keysz(PyObject *me, void *hunoz)
1040 { return (keysz_pywrap(GCMAC_CM(me)->keysz)); }
1041
1042static PyObject *gcmget_tagsz(PyObject *me, void *hunoz)
1043 { return (PyInt_FromLong(GCMAC_CM(me)->hashsz)); }
1044
1045static PyGetSetDef gcmac_pygetset[] = {
1046#define GETSETNAME(op, name) gcm##op##_##name
1047 GET (keysz, "CM.keysz -> acceptable key sizes")
1048 GET (tagsz, "CM.tagsz -> MAC output size")
1049 GET (name, "CM.name -> name of this kind of MAC")
1050#undef GETSETNAME
1051 { 0 }
1052};
1053
1054static PyTypeObject gcmac_pytype_skel = {
6d4db0bf 1055 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1056 "GCMAC", /* @tp_name@ */
d7ab1bab 1057 sizeof(gchash_pyobj), /* @tp_basicsize@ */
1058 0, /* @tp_itemsize@ */
1059
1060 0, /* @tp_dealloc@ */
1061 0, /* @tp_print@ */
1062 0, /* @tp_getattr@ */
1063 0, /* @tp_setattr@ */
1064 0, /* @tp_compare@ */
1065 0, /* @tp_repr@ */
1066 0, /* @tp_as_number@ */
1067 0, /* @tp_as_sequence@ */
1068 0, /* @tp_as_mapping@ */
1069 0, /* @tp_hash@ */
1070 0, /* @tp_call@ */
1071 0, /* @tp_str@ */
1072 0, /* @tp_getattro@ */
1073 0, /* @tp_setattro@ */
1074 0, /* @tp_as_buffer@ */
1075 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1076 Py_TPFLAGS_BASETYPE,
1077
1078 /* @tp_doc@ */
1079"Message authentication code metametaclass.",
1080
1081 0, /* @tp_traverse@ */
1082 0, /* @tp_clear@ */
1083 0, /* @tp_richcompare@ */
1084 0, /* @tp_weaklistoffset@ */
1085 0, /* @tp_iter@ */
963a6148 1086 0, /* @tp_iternext@ */
d7ab1bab 1087 0, /* @tp_methods@ */
1088 0, /* @tp_members@ */
1089 gcmac_pygetset, /* @tp_getset@ */
1090 0, /* @tp_base@ */
1091 0, /* @tp_dict@ */
1092 0, /* @tp_descr_get@ */
1093 0, /* @tp_descr_set@ */
1094 0, /* @tp_dictoffset@ */
1095 0, /* @tp_init@ */
1096 PyType_GenericAlloc, /* @tp_alloc@ */
1097 abstract_pynew, /* @tp_new@ */
3aa33042 1098 0, /* @tp_free@ */
d7ab1bab 1099 0 /* @tp_is_gc@ */
1100};
1101
1102static PyTypeObject gmac_pytype_skel = {
6d4db0bf 1103 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1104 "GMAC", /* @tp_name@ */
d7ab1bab 1105 sizeof(gmac_pyobj), /* @tp_basicsize@ */
1106 0, /* @tp_itemsize@ */
1107
1108 gmac_pydealloc, /* @tp_dealloc@ */
1109 0, /* @tp_print@ */
1110 0, /* @tp_getattr@ */
1111 0, /* @tp_setattr@ */
1112 0, /* @tp_compare@ */
1113 0, /* @tp_repr@ */
1114 0, /* @tp_as_number@ */
1115 0, /* @tp_as_sequence@ */
1116 0, /* @tp_as_mapping@ */
1117 0, /* @tp_hash@ */
1118 0, /* @tp_call@ */
1119 0, /* @tp_str@ */
1120 0, /* @tp_getattro@ */
1121 0, /* @tp_setattro@ */
1122 0, /* @tp_as_buffer@ */
1123 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1124 Py_TPFLAGS_BASETYPE,
1125
1126 /* @tp_doc@ */
1127"Message authentication code metaclass, abstract base class.",
1128
1129 0, /* @tp_traverse@ */
1130 0, /* @tp_clear@ */
1131 0, /* @tp_richcompare@ */
1132 0, /* @tp_weaklistoffset@ */
1133 0, /* @tp_iter@ */
963a6148 1134 0, /* @tp_iternext@ */
d7ab1bab 1135 0, /* @tp_methods@ */
1136 0, /* @tp_members@ */
1137 0, /* @tp_getset@ */
1138 0, /* @tp_base@ */
1139 0, /* @tp_dict@ */
1140 0, /* @tp_descr_get@ */
1141 0, /* @tp_descr_set@ */
1142 0, /* @tp_dictoffset@ */
1143 0, /* @tp_init@ */
1144 PyType_GenericAlloc, /* @tp_alloc@ */
1145 abstract_pynew, /* @tp_new@ */
3aa33042 1146 0, /* @tp_free@ */
d7ab1bab 1147 0 /* @tp_is_gc@ */
1148};
1149
1150static PyTypeObject gmhash_pytype_skel = {
6d4db0bf 1151 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1152 "GMACHash", /* @tp_name@ */
d7ab1bab 1153 sizeof(ghash_pyobj), /* @tp_basicsize@ */
1154 0, /* @tp_itemsize@ */
1155
1156 ghash_pydealloc, /* @tp_dealloc@ */
1157 0, /* @tp_print@ */
1158 0, /* @tp_getattr@ */
1159 0, /* @tp_setattr@ */
1160 0, /* @tp_compare@ */
1161 0, /* @tp_repr@ */
1162 0, /* @tp_as_number@ */
1163 0, /* @tp_as_sequence@ */
1164 0, /* @tp_as_mapping@ */
1165 0, /* @tp_hash@ */
1166 0, /* @tp_call@ */
1167 0, /* @tp_str@ */
1168 0, /* @tp_getattro@ */
1169 0, /* @tp_setattro@ */
1170 0, /* @tp_as_buffer@ */
1171 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1172 Py_TPFLAGS_BASETYPE,
1173
1174 /* @tp_doc@ */
1175"Message authentication code, abstract base class.",
1176
1177 0, /* @tp_traverse@ */
1178 0, /* @tp_clear@ */
1179 0, /* @tp_richcompare@ */
1180 0, /* @tp_weaklistoffset@ */
1181 0, /* @tp_iter@ */
963a6148 1182 0, /* @tp_iternext@ */
d7ab1bab 1183 0, /* @tp_methods@ */
1184 0, /* @tp_members@ */
1185 0, /* @tp_getset@ */
1186 0, /* @tp_base@ */
1187 0, /* @tp_dict@ */
1188 0, /* @tp_descr_get@ */
1189 0, /* @tp_descr_set@ */
1190 0, /* @tp_dictoffset@ */
1191 0, /* @tp_init@ */
1192 PyType_GenericAlloc, /* @tp_alloc@ */
1193 abstract_pynew, /* @tp_new@ */
3aa33042 1194 0, /* @tp_free@ */
d7ab1bab 1195 0 /* @tp_is_gc@ */
1196};
1197
204d480b
MW		 1198/*----- Special snowflake for Poly1305 ------------------------------------*/
1199
1200PyTypeObject *poly1305cls_pytype, *poly1305key_pytype, *poly1305hash_pytype;
1201
1202typedef struct poly1305key_pyobj {
1203 PyHeapTypeObject ty;
1204 poly1305_key k;
1205} poly1305key_pyobj;
1206
1207typedef struct poly1305hash_pyobj {
1208 PyObject_HEAD
1209 unsigned f;
1210#define f_mask 1u
1211 poly1305_ctx ctx;
1212} poly1305hash_pyobj;
1213
1214#define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
1215#define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
1216CONVFUNC(poly1305hash, poly1305_ctx *, P1305_CTX)
1217
1218static PyObject *poly1305hash_pynew(PyTypeObject *ty,
1219 PyObject *arg, PyObject *kw)
1220{
827f89d7 1221 static const char *const kwlist[] = { "mask", 0 };
204d480b
MW		 1222 poly1305key_pyobj *pk = (poly1305key_pyobj *)ty;
1223 poly1305hash_pyobj *ph;
1224 char *m = 0;
6b54260d 1225 Py_ssize_t sz;
204d480b 1226
827f89d7 1227 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|s#:new", KWLIST, &m, &sz))
204d480b
MW		 1228 return (0);
1229 if (m && sz != POLY1305_MASKSZ) VALERR("bad mask length");
1230 ph = PyObject_NEW(poly1305hash_pyobj, ty);
1231 ph->f = 0;
1232 if (m) ph->f |= f_mask;
1233 poly1305_macinit(&ph->ctx, &pk->k, m);
1234 Py_INCREF(ty);
1235 return ((PyObject *)ph);
1236end:
1237 return (0);
1238}
1239
1240static PyObject *poly1305key_pynew(PyTypeObject *ty,
1241 PyObject *arg, PyObject *kw)
1242{
827f89d7 1243 static const char *const kwlist[] = { "k", 0 };
204d480b
MW		 1244 poly1305key_pyobj *pk;
1245 char *k;
6b54260d 1246 Py_ssize_t sz;
204d480b 1247
827f89d7 1248 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &k, &sz))
204d480b
MW		 1249 goto end;
1250 if (keysz(sz, poly1305_keysz) != sz) VALERR("bad key length");
1251
1252 pk = newtype(ty, 0, 0);
1253 pk->ty.ht_name = PyString_FromString("poly1305(keyed)");
1254 pk->ty.ht_type.tp_basicsize = sizeof(poly1305hash_pyobj);
1255 pk->ty.ht_type.tp_name = PyString_AS_STRING(pk->ty.ht_name);
1256 pk->ty.ht_type.tp_base = poly1305hash_pytype;
1257 Py_INCREF(poly1305key_pytype);
1258 pk->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1259 Py_TPFLAGS_BASETYPE |
1260 Py_TPFLAGS_HEAPTYPE);
1261 pk->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1262 pk->ty.ht_type.tp_free = 0;
1263 pk->ty.ht_type.tp_new = poly1305hash_pynew;
1264 typeready(&pk->ty.ht_type);
1265
1266 poly1305_keyinit(&pk->k, k, sz);
1267 return ((PyObject *)pk);
1268
1269end:
1270 return (0);
1271}
1272
1273static PyObject *poly1305clsget_name(PyObject *me, void *hunoz)
1274 { return (PyString_FromString("poly1305")); }
1275
1276static PyObject *poly1305clsget_keysz(PyObject *me, void *hunoz)
1277 { return (keysz_pywrap(poly1305_keysz)); }
1278
1279static PyObject *poly1305clsget_masksz(PyObject *me, void *hunoz)
1280 { return (PyInt_FromLong(POLY1305_MASKSZ)); }
1281
1282static PyObject *poly1305clsget_tagsz(PyObject *me, void *hunoz)
1283 { return (PyInt_FromLong(POLY1305_TAGSZ)); }
1284
1285static PyObject *polymeth_copy(PyObject *me, PyObject *arg)
1286{
1287 poly1305hash_pyobj *ph;
1288 if (!PyArg_ParseTuple(arg, ":copy")) return (0);
1289 ph = PyObject_NEW(poly1305hash_pyobj, me->ob_type);
1290 poly1305_copy(&ph->ctx, P1305_CTX(me));
1291 Py_INCREF(me->ob_type);
1292 return ((PyObject *)ph);
1293}
1294
1295static PyObject *polymeth_hash(PyObject *me, PyObject *arg)
1296{
1297 char *p;
6b54260d 1298 Py_ssize_t sz;
204d480b
MW		 1299 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
1300 poly1305_hash(P1305_CTX(me), p, sz);
1301 RETURN_ME;
1302}
1303
1304#define POLYMETH_HASHU_(n, W, w) \
1305 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
1306 { \
1307 uint##n x; \
1308 octet b[SZ_##W]; \
0e5c668c 1309 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
0c87e818 1310 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
204d480b 1311 RETURN_ME; \
204d480b
MW		 1312 }
1313DOUINTCONV(POLYMETH_HASHU_)
1314
1315#define POLYMETH_HASHBUF_(n, W, w) \
1316 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
1317 { \
1318 char *p; \
6b54260d 1319 Py_ssize_t sz; \
204d480b
MW		 1320 octet b[SZ_##W]; \
1321 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1322 if (sz > MASK##n) TYERR("string too long"); \
0c87e818 1323 STORE##W(b, sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
204d480b
MW		 1324 poly1305_hash(P1305_CTX(me), p, sz); \
1325 RETURN_ME; \
1326 end: \
1327 return (0); \
1328 }
1329DOUINTCONV(POLYMETH_HASHBUF_)
1330
1331static PyObject *polymeth_hashstrz(PyObject *me, PyObject *arg)
1332{
1333 char *p;
1334 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
1335 poly1305_hash(P1305_CTX(me), p, strlen(p) + 1);
1336 RETURN_ME;
1337}
1338
1339static PyObject *polymeth_flush(PyObject *me, PyObject *arg)
1340{
1341 if (!PyArg_ParseTuple(arg, ":flush")) return (0);
1342 poly1305_flush(P1305_CTX(me));
1343 RETURN_ME;
1344}
1345
5c17375a
MW		 1346static PyObject *polymeth_flushzero(PyObject *me, PyObject *arg)
1347{
1348 if (!PyArg_ParseTuple(arg, ":flushzero")) return (0);
1349 poly1305_flushzero(P1305_CTX(me));
1350 RETURN_ME;
1351}
1352
204d480b
MW		 1353static PyObject *polymeth_concat(PyObject *me, PyObject *arg)
1354{
1355 PyObject *pre, *suff;
1356 if (!PyArg_ParseTuple(arg, "OO:concat", &pre, &suff)) return (0);
1357 if (!PyObject_TypeCheck(pre, poly1305hash_pytype) ||
1358 !PyObject_TypeCheck(suff, poly1305hash_pytype))
1359 TYERR("wanted a poly1305hash");
1360 if (me->ob_type != pre->ob_type || me->ob_type != suff->ob_type)
1361 TYERR("key mismatch");
1362 if (P1305_CTX(pre)->nbuf) VALERR("prefix is not block-aligned");
1363 poly1305_concat(P1305_CTX(me), P1305_CTX(pre), P1305_CTX(suff));
1364 RETURN_ME;
1365end:
1366 return (0);
1367}
1368
1369static PyObject *polymeth_done(PyObject *me, PyObject *arg)
1370{
1371 PyObject *rc;
1372 if (!PyArg_ParseTuple(arg, ":done")) return (0);
1373 if (!(P1305_F(me) & f_mask)) VALERR("no mask");
1374 rc = bytestring_pywrap(0, POLY1305_TAGSZ);
1375 poly1305_done(P1305_CTX(me), PyString_AS_STRING(rc));
1376 return (rc);
1377end:
1378 return (0);
1379}
1380
1381static PyGetSetDef poly1305cls_pygetset[] = {
1382#define GETSETNAME(op, name) poly1305cls##op##_##name
1383 GET (keysz, "PC.keysz -> acceptable key sizes")
1384 GET (masksz, "PC.masksz -> mask size")
1385 GET (tagsz, "PC.tagsz -> MAC output size")
1386 GET (name, "PC.name -> name of this kind of MAC")
1387#undef GETSETNAME
1388 { 0 }
1389};
1390
1391static PyMethodDef poly1305hash_pymethods[] = {
1392#define METHNAME(name) polymeth_##name
1393 METH (copy, "P.copy() -> PP")
1394 METH (hash, "P.hash(M)")
1395#define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
1396 DOUINTCONV(METHU_)
1397#undef METHU_
1398#define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
1399 DOUINTCONV(METHBUF_)
1400#undef METHBUF_
1401 METH (hashstrz, "P.hashstrz(STRING)")
1402 METH (flush, "P.flush()")
5c17375a 1403 METH (flushzero, "P.flushzero()")
204d480b
MW		 1404 METH (concat, "P.concat(PREFIX, SUFFIX)")
1405 METH (done, "P.done() -> TAG")
1406#undef METHNAME
1407 { 0 }
1408};
1409
1410static PyTypeObject poly1305cls_pytype_skel = {
1411 PyObject_HEAD_INIT(0) 0, /* Header */
1412 "Poly1305Class", /* @tp_name@ */
1413 sizeof(PyHeapTypeObject), /* @tp_basicsize@ */
1414 0, /* @tp_itemsize@ */
1415
1416 0, /* @tp_dealloc@ */
1417 0, /* @tp_print@ */
1418 0, /* @tp_getattr@ */
1419 0, /* @tp_setattr@ */
1420 0, /* @tp_compare@ */
1421 0, /* @tp_repr@ */
1422 0, /* @tp_as_number@ */
1423 0, /* @tp_as_sequence@ */
1424 0, /* @tp_as_mapping@ */
1425 0, /* @tp_hash@ */
1426 0, /* @tp_call@ */
1427 0, /* @tp_str@ */
1428 0, /* @tp_getattro@ */
1429 0, /* @tp_setattro@ */
1430 0, /* @tp_as_buffer@ */
1431 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1432 Py_TPFLAGS_BASETYPE,
1433
1434 /* @tp_doc@ */
1435"Poly1305 metametaclass. Best not to ask.",
1436
1437 0, /* @tp_traverse@ */
1438 0, /* @tp_clear@ */
1439 0, /* @tp_richcompare@ */
1440 0, /* @tp_weaklistoffset@ */
1441 0, /* @tp_iter@ */
1442 0, /* @tp_iternext@ */
1443 0, /* @tp_methods@ */
1444 0, /* @tp_members@ */
1445 poly1305cls_pygetset, /* @tp_getset@ */
1446 0, /* @tp_base@ */
1447 0, /* @tp_dict@ */
1448 0, /* @tp_descr_get@ */
1449 0, /* @tp_descr_set@ */
1450 0, /* @tp_dictoffset@ */
1451 0, /* @tp_init@ */
1452 PyType_GenericAlloc, /* @tp_alloc@ */
1453 abstract_pynew, /* @tp_new@ */
1454 0, /* @tp_free@ */
1455 0 /* @tp_is_gc@ */
1456};
1457
1458static PyTypeObject poly1305key_pytype_skel = {
1459 PyObject_HEAD_INIT(0) 0, /* Header */
1460 "poly1305", /* @tp_name@ */
1461 sizeof(poly1305key_pyobj), /* @tp_basicsize@ */
1462 0, /* @tp_itemsize@ */
1463
1464 0, /* @tp_dealloc@ */
1465 0, /* @tp_print@ */
1466 0, /* @tp_getattr@ */
1467 0, /* @tp_setattr@ */
1468 0, /* @tp_compare@ */
1469 0, /* @tp_repr@ */
1470 0, /* @tp_as_number@ */
1471 0, /* @tp_as_sequence@ */
1472 0, /* @tp_as_mapping@ */
1473 0, /* @tp_hash@ */
1474 0, /* @tp_call@ */
1475 0, /* @tp_str@ */
1476 0, /* @tp_getattro@ */
1477 0, /* @tp_setattro@ */
1478 0, /* @tp_as_buffer@ */
1479 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1480 Py_TPFLAGS_BASETYPE,
1481
1482 /* @tp_doc@ */
06cd26e8 1483"poly1305(K): Poly1305 key.",
204d480b
MW		 1484
1485 0, /* @tp_traverse@ */
1486 0, /* @tp_clear@ */
1487 0, /* @tp_richcompare@ */
1488 0, /* @tp_weaklistoffset@ */
1489 0, /* @tp_iter@ */
1490 0, /* @tp_iternext@ */
1491 0, /* @tp_methods@ */
1492 0, /* @tp_members@ */
1493 0, /* @tp_getset@ */
1494 0, /* @tp_base@ */
1495 0, /* @tp_dict@ */
1496 0, /* @tp_descr_get@ */
1497 0, /* @tp_descr_set@ */
1498 0, /* @tp_dictoffset@ */
1499 0, /* @tp_init@ */
1500 PyType_GenericAlloc, /* @tp_alloc@ */
1501 poly1305key_pynew, /* @tp_new@ */
1502 0, /* @tp_free@ */
1503 0 /* @tp_is_gc@ */
1504};
1505
1506static PyTypeObject poly1305hash_pytype_skel = {
1507 PyObject_HEAD_INIT(0) 0, /* Header */
1508 "Poly1305Hash", /* @tp_name@ */
1509 sizeof(poly1305hash_pyobj), /* @tp_basicsize@ */
1510 0, /* @tp_itemsize@ */
1511
1512 0, /* @tp_dealloc@ */
1513 0, /* @tp_print@ */
1514 0, /* @tp_getattr@ */
1515 0, /* @tp_setattr@ */
1516 0, /* @tp_compare@ */
1517 0, /* @tp_repr@ */
1518 0, /* @tp_as_number@ */
1519 0, /* @tp_as_sequence@ */
1520 0, /* @tp_as_mapping@ */
1521 0, /* @tp_hash@ */
1522 0, /* @tp_call@ */
1523 0, /* @tp_str@ */
1524 0, /* @tp_getattro@ */
1525 0, /* @tp_setattro@ */
1526 0, /* @tp_as_buffer@ */
1527 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1528 Py_TPFLAGS_BASETYPE,
1529
1530 /* @tp_doc@ */
1531"Poly1305 MAC context base class.",
1532
1533 0, /* @tp_traverse@ */
1534 0, /* @tp_clear@ */
1535 0, /* @tp_richcompare@ */
1536 0, /* @tp_weaklistoffset@ */
1537 0, /* @tp_iter@ */
1538 0, /* @tp_iternext@ */
1539 poly1305hash_pymethods, /* @tp_methods@ */
1540 0, /* @tp_members@ */
1541 0, /* @tp_getset@ */
1542 0, /* @tp_base@ */
1543 0, /* @tp_dict@ */
1544 0, /* @tp_descr_get@ */
1545 0, /* @tp_descr_set@ */
1546 0, /* @tp_dictoffset@ */
1547 0, /* @tp_init@ */
1548 PyType_GenericAlloc, /* @tp_alloc@ */
1549 abstract_pynew, /* @tp_new@ */
1550 0, /* @tp_free@ */
1551 0 /* @tp_is_gc@ */
1552};
1553
a75e68c9
MW		 1554/*----- Special snowflake for HSalsa and HChaCha --------------------------*/
1555
1556#define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
1557 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
1558 { \
1559 dance##_ctx dance; \
1560 char *k, *n; \
6b54260d 1561 Py_ssize_t ksz, nsz; \
a75e68c9
MW		 1562 PyObject *rc; \
1563 if (!PyArg_ParseTuple(arg, "s#s#:" #hdance "_prf", \
1564 &k, &ksz, &n, &nsz)) \
1565 goto end; \
1566 if (ksz != DANCE##_KEYSZ) VALERR("bad key length"); \
1567 if (nsz != HDANCE##_INSZ) VALERR("bad input length"); \
1568 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
1569 dance##_init(&dance, k, ksz, 0); \
1570 hdance##_prf(&dance, n, PyString_AS_STRING(rc)); \
1571 return (rc); \
1572 end: \
1573 return (0); \
1574 }
1575
1576DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa20)
1577DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa2012)
1578DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa208)
1579
1580DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha20)
1581DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha12)
1582DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha8)
204d480b 1583
b35fdbe6
MW		 1584/*----- Keccak-p[1600, n] -------------------------------------------------*/
1585
1586static PyTypeObject *kxvik_pytype;
1587
1588typedef struct kxvik_pyobj {
1589 PyObject_HEAD
1590 keccak1600_state s;
1591 unsigned n;
1592} kxvik_pyobj;
1593
1594static PyObject *kxvik_pynew(PyTypeObject *ty,
1595 PyObject *arg, PyObject *kw)
1596{
1597 unsigned n = 24;
1598 kxvik_pyobj *rc = 0;
827f89d7
MW		 1599 static const char *const kwlist[] = { "nround", 0 };
1600 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST,
b35fdbe6
MW		 1601 convuint, &n))
1602 goto end;
1603 rc = (kxvik_pyobj *)ty->tp_alloc(ty, 0);
1604 rc->n = n;
1605 keccak1600_init(&rc->s);
1606end:
1607 return ((PyObject *)rc);
1608}
1609
1610static PyObject *kxvikmeth_mix(PyObject *me, PyObject *arg)
1611{
1612 kxvik_pyobj *k = (kxvik_pyobj *)me;
1613 kludge64 t[25];
1614 const octet *q;
1615 octet buf[8];
1616 unsigned i;
1617 char *p; Py_ssize_t n;
1618
1619 if (!PyArg_ParseTuple(arg, "s#:mix", &p, &n)) goto end;
1620 if (n > 200) VALERR("out of range");
1621 q = (const octet *)p;
1622 i = 0;
1623 while (n > 8) { LOAD64_L_(t[i], q); i++; q += 8; n -= 8; }
1624 if (n) {
1625 memcpy(buf, q, n); memset(buf + n, 0, 8 - n);
1626 LOAD64_L_(t[i], buf); i++;
1627 }
1628 keccak1600_mix(&k->s, t, i);
1629 RETURN_ME;
1630end:
1631 return (0);
1632}
1633
1634static PyObject *kxvikmeth_extract(PyObject *me, PyObject *arg)
1635{
1636 kxvik_pyobj *k = (kxvik_pyobj *)me;
1637 PyObject *rc = 0;
1638 kludge64 t[25];
1639 octet *q, buf[8];
1640 unsigned i;
1641 unsigned n;
1642
1643 if (!PyArg_ParseTuple(arg, "O&:mix", convuint, &n)) goto end;
1644 if (n > 200) VALERR("out of range");
1645 rc = bytestring_pywrap(0, n);
1646 q = (octet *)PyString_AS_STRING(rc);
1647 keccak1600_extract(&k->s, t, (n + 7)/8);
1648 i = 0;
1649 while (n > 8) { STORE64_L_(q, t[i]); i++; q += 8; n -= 8; }
1650 if (n) { STORE64_L_(buf, t[i]); memcpy(q, buf, n); }
1651end:
1652 return (rc);
1653}
1654
1655static PyObject *kxvikmeth_step(PyObject *me, PyObject *arg)
1656{
1657 kxvik_pyobj *k = (kxvik_pyobj *)me;
1658 if (!PyArg_ParseTuple(arg, ":step")) return (0);
1659 keccak1600_p(&k->s, &k->s, k->n);
1660 RETURN_ME;
1661}
1662
1663static PyObject *kxvikget_nround(PyObject *me, void *hunoz)
1664{
1665 kxvik_pyobj *k = (kxvik_pyobj *)me;
1666 return (PyInt_FromLong(k->n));
1667}
1668
1669static int kxvikset_nround(PyObject *me, PyObject *val, void *hunoz)
1670{
1671 kxvik_pyobj *k = (kxvik_pyobj *)me;
1672 unsigned n;
1673
1674 if (!convuint(val, &n)) return (-1);
1675 k->n = n;
1676 return (0);
1677}
1678
1679static PyGetSetDef kxvik_pygetset[] = {
1680#define GETSETNAME(op, name) kxvik##op##_##name
1681 GETSET(nround, "KECCAK.nround -> number of rounds")
1682#undef GETSETNAME
1683 { 0 }
1684};
1685
1686static PyMethodDef kxvik_pymethods[] = {
1687#define METHNAME(func) kxvikmeth_##func
1688 METH (mix, "KECCAK.mix(DATA)")
1689 METH (extract, "KECCAK.extract(NOCTETS)")
1690 METH (step, "KECCAK.step()")
1691#undef METHNAME
1692 { 0 }
1693};
1694
1695static PyTypeObject kxvik_pytype_skel = {
1696 PyObject_HEAD_INIT(0) 0, /* Header */
1697 "Keccak1600", /* @tp_name@ */
1698 sizeof(kxvik_pyobj), /* @tp_basicsize@ */
1699 0, /* @tp_itemsize@ */
1700
1701 0, /* @tp_dealloc@ */
1702 0, /* @tp_print@ */
1703 0, /* @tp_getattr@ */
1704 0, /* @tp_setattr@ */
1705 0, /* @tp_compare@ */
1706 0, /* @tp_repr@ */
1707 0, /* @tp_as_number@ */
1708 0, /* @tp_as_sequence@ */
1709 0, /* @tp_as_mapping@ */
1710 0, /* @tp_hash@ */
1711 0, /* @tp_call@ */
1712 0, /* @tp_str@ */
1713 0, /* @tp_getattro@ */
1714 0, /* @tp_setattro@ */
1715 0, /* @tp_as_buffer@ */
1716 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1717 Py_TPFLAGS_BASETYPE,
1718
1719 /* @tp_doc@ */
06cd26e8 1720"Keccak1600([nround = 24]): Keccak-p[1600, n] state.",
b35fdbe6
MW		 1721
1722 0, /* @tp_traverse@ */
1723 0, /* @tp_clear@ */
1724 0, /* @tp_richcompare@ */
1725 0, /* @tp_weaklistoffset@ */
1726 0, /* @tp_iter@ */
1727 0, /* @tp_iternext@ */
1728 kxvik_pymethods, /* @tp_methods@ */
1729 0, /* @tp_members@ */
1730 kxvik_pygetset, /* @tp_getset@ */
1731 0, /* @tp_base@ */
1732 0, /* @tp_dict@ */
1733 0, /* @tp_descr_get@ */
1734 0, /* @tp_descr_set@ */
1735 0, /* @tp_dictoffset@ */
1736 0, /* @tp_init@ */
1737 PyType_GenericAlloc, /* @tp_alloc@ */
1738 kxvik_pynew, /* @tp_new@ */
1739 0, /* @tp_free@ */
1740 0 /* @tp_is_gc@ */
1741};
1742
6bd22b53
MW		 1743static PyTypeObject *shake_pytype, *shake128_pytype, *shake256_pytype;
1744
1745typedef struct shake_pyobj {
1746 PyObject_HEAD
1747 int st;
1748 shake_ctx h;
1749} shake_pyobj;
1750
1751#define SHAKE_H(o) (&((shake_pyobj *)(o))->h)
1752#define SHAKE_ST(o) (((shake_pyobj *)(o))->st)
1753
1754static PyObject *shake_dopynew(void (*initfn)(shake_ctx *,
1755 const void *, size_t,
1756 const void *, size_t),
1757 PyTypeObject *ty,
1758 PyObject *arg, PyObject *kw)
1759{
1760 shake_pyobj *rc = 0;
1761 char *p = 0, *f = 0;
1762 Py_ssize_t psz = 0, fsz = 0;
827f89d7 1763 static const char *const kwlist[] = { "perso", "func", 0 };
6bd22b53 1764
827f89d7 1765 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|s#s#:new", KWLIST,
6bd22b53
MW		 1766 &p, &psz, &f, &fsz))
1767 goto end;
1768 rc = (shake_pyobj *)ty->tp_alloc(ty, 0);
1769 initfn(&rc->h, f, fsz, p, psz);
1770 rc->st = 0;
1771end:
1772 return ((PyObject *)rc);
1773}
1774
1775static PyObject *shake128_pynew(PyTypeObject *ty,
1776 PyObject *arg, PyObject *kw)
1777 { return (shake_dopynew(cshake128_init, ty, arg, kw)); }
1778
1779static PyObject *shake256_pynew(PyTypeObject *ty,
1780 PyObject *arg, PyObject *kw)
1781 { return (shake_dopynew(cshake256_init, ty, arg, kw)); }
1782
1783static int shake_check(PyObject *me, int st)
1784{
1785 if (SHAKE_ST(me) != st) VALERR("wrong state");
1786 return (0);
1787end:
1788 return (-1);
1789}
1790
1791static PyObject *shakemeth_hash(PyObject *me, PyObject *arg)
1792{
1793 char *p;
1794 Py_ssize_t sz;
1795 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
1796 if (shake_check(me, 0)) return (0);
1797 shake_hash(SHAKE_H(me), p, sz);
1798 RETURN_ME;
1799}
1800
1801#define SHAKEMETH_HASHU_(n, W, w) \
1802 static PyObject *shakemeth_hashu##w(PyObject *me, PyObject *arg) \
1803 { \
1804 uint##n x; \
1805 octet b[SZ_##W]; \
0e5c668c
MW		 1806 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
1807 if (shake_check(me, 0)) return (0); \
6bd22b53
MW		 1808 STORE##W(b, x); shake_hash(SHAKE_H(me), b, sizeof(b)); \
1809 RETURN_ME; \
6bd22b53
MW		 1810 }
1811DOUINTCONV(SHAKEMETH_HASHU_)
1812
1813#define SHAKEMETH_HASHBUF_(n, W, w) \
1814 static PyObject *shakemeth_hashbuf##w(PyObject *me, PyObject *arg) \
1815 { \
1816 char *p; \
1817 Py_ssize_t sz; \
1818 octet b[SZ_##W]; \
1819 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1820 if (sz > MASK##n) TYERR("string too long"); \
1821 if (shake_check(me, 0)) goto end; \
1822 STORE##W(b, sz); shake_hash(SHAKE_H(me), b, sizeof(b)); \
1823 shake_hash(SHAKE_H(me), p, sz); \
1824 RETURN_ME; \
1825 end: \
1826 return (0); \
1827 }
1828DOUINTCONV(SHAKEMETH_HASHBUF_)
1829
1830static PyObject *shakemeth_hashstrz(PyObject *me, PyObject *arg)
1831{
1832 char *p;
1833 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
1834 if (shake_check(me, 0)) return (0);
1835 shake_hash(SHAKE_H(me), p, strlen(p) + 1);
1836 RETURN_ME;
1837}
1838
1839static PyObject *shakemeth_xof(PyObject *me, PyObject *arg)
1840{
1841 if (!PyArg_ParseTuple(arg, ":xof")) goto end;
1842 if (shake_check(me, 0)) goto end;
1843 shake_xof(SHAKE_H(me));
1844 SHAKE_ST(me) = 1;
1845 RETURN_ME;
1846end:
1847 return (0);
1848}
1849
1850static PyObject *shakemeth_done(PyObject *me, PyObject *arg)
1851{
1852 PyObject *rc = 0;
1853 size_t n;
1854 if (!PyArg_ParseTuple(arg, "O&:done", convszt, &n)) goto end;
1855 if (shake_check(me, 0)) goto end;
1856 rc = bytestring_pywrap(0, n);
1857 shake_done(SHAKE_H(me), PyString_AS_STRING(rc), n);
1858 SHAKE_ST(me) = -1;
1859end:
1860 return (rc);
1861}
1862
1863static PyObject *shakemeth_copy(PyObject *me, PyObject *arg)
1864{
1865 shake_pyobj *rc = 0;
1866
1867 if (!PyArg_ParseTuple(arg, ":copy")) goto end;
1868 rc = PyObject_NEW(shake_pyobj, me->ob_type);
1869 rc->h = *SHAKE_H(me);
1870 rc->st = SHAKE_ST(me);
1871end:
1872 return ((PyObject *)me);
1873}
1874
1875static PyObject *shakemeth_get(PyObject *me, PyObject *arg)
1876{
1877 PyObject *rc = 0;
1878 size_t sz;
1879
1880 if (!PyArg_ParseTuple(arg, "O&:get", convszt, &sz)) goto end;
1881 if (shake_check(me, 1)) goto end;
1882 rc = bytestring_pywrap(0, sz);
1883 shake_get(SHAKE_H(me), PyString_AS_STRING(rc), sz);
1884end:
1885 return (rc);
1886}
1887
1888static PyObject *shakemeth_mask(PyObject *me, PyObject *arg)
1889{
1890 PyObject *rc = 0;
1891 char *p; Py_ssize_t sz;
1892
1893 if (!PyArg_ParseTuple(arg, "s#:mask", &p, &sz)) goto end;
1894 if (shake_check(me, 1)) goto end;
1895 rc = bytestring_pywrap(0, sz);
1896 shake_mask(SHAKE_H(me), p, PyString_AS_STRING(rc), sz);
1897end:
1898 return (rc);
1899}
1900
1901static PyObject *shakeget_rate(PyObject *me, void *hunoz)
1902 { return (PyInt_FromLong(SHAKE_H(me)->h.r)); }
1903
1904static PyObject *shakeget_buffered(PyObject *me, void *hunoz)
1905 { return (PyInt_FromLong(SHAKE_H(me)->h.n)); }
1906
1907static PyObject *shakeget_state(PyObject *me, void *hunoz)
1908{
1909 int st = SHAKE_ST(me);
1910 return (PyString_FromString(st == 0 ? "absorb" :
1911 st == 1 ? "squeeze" : "dead"));
1912}
1913
1914static PyGetSetDef shake_pygetset[] = {
1915#define GETSETNAME(op, name) shake##op##_##name
1916 GET (rate, "S.rate -> rate, in bytes")
1917 GET (buffered, "S.buffered -> amount currently buffered")
1918 GET (state, "S.state -> `absorb', `squeeze', `dead'")
1919#undef GETSETNAME
1920 { 0 }
1921};
1922
1923static PyMethodDef shake_pymethods[] = {
1924#define METHNAME(func) shakemeth_##func
1925 METH (copy, "S.copy() -> SS")
1926 METH (hash, "S.hash(M)")
1927#define METHU_(n, W, w) METH(hashu##w, "S.hashu" #w "(WORD)")
1928 DOUINTCONV(METHU_)
1929#undef METHU_
1930#define METHBUF_(n, W, w) METH(hashbuf##w, "S.hashbuf" #w "(BYTES)")
1931 DOUINTCONV(METHBUF_)
1932#undef METHBUF_
1933 METH (hashstrz, "S.hashstrz(STRING)")
1934 METH (xof, "S.xof()")
1935 METH (done, "S.done(LEN) ->H")
1936 METH (get, "S.get(LEN) -> H")
1937 METH (mask, "S.mask(M) -> C")
1938#undef METHNAME
1939 { 0 }
1940};
1941
1942static PyTypeObject shake_pytype_skel = {
1943 PyObject_HEAD_INIT(0) 0, /* Header */
1944 "Shake", /* @tp_name@ */
1945 sizeof(shake_pyobj), /* @tp_basicsize@ */
1946 0, /* @tp_itemsize@ */
1947
1948 0, /* @tp_dealloc@ */
1949 0, /* @tp_print@ */
1950 0, /* @tp_getattr@ */
1951 0, /* @tp_setattr@ */
1952 0, /* @tp_compare@ */
1953 0, /* @tp_repr@ */
1954 0, /* @tp_as_number@ */
1955 0, /* @tp_as_sequence@ */
1956 0, /* @tp_as_mapping@ */
1957 0, /* @tp_hash@ */
1958 0, /* @tp_call@ */
1959 0, /* @tp_str@ */
1960 0, /* @tp_getattro@ */
1961 0, /* @tp_setattro@ */
1962 0, /* @tp_as_buffer@ */
1963 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1964 Py_TPFLAGS_BASETYPE,
1965
1966 /* @tp_doc@ */
1967"SHAKE/cSHAKE base class.",
1968
1969 0, /* @tp_traverse@ */
1970 0, /* @tp_clear@ */
1971 0, /* @tp_richcompare@ */
1972 0, /* @tp_weaklistoffset@ */
1973 0, /* @tp_iter@ */
1974 0, /* @tp_iternext@ */
1975 shake_pymethods, /* @tp_methods@ */
1976 0, /* @tp_members@ */
1977 shake_pygetset, /* @tp_getset@ */
1978 0, /* @tp_base@ */
1979 0, /* @tp_dict@ */
1980 0, /* @tp_descr_get@ */
1981 0, /* @tp_descr_set@ */
1982 0, /* @tp_dictoffset@ */
1983 0, /* @tp_init@ */
1984 PyType_GenericAlloc, /* @tp_alloc@ */
1985 abstract_pynew, /* @tp_new@ */
1986 0, /* @tp_free@ */
1987 0 /* @tp_is_gc@ */
1988};
1989
1990static PyTypeObject shake128_pytype_skel = {
1991 PyObject_HEAD_INIT(0) 0, /* Header */
1992 "Shake128", /* @tp_name@ */
1993 0, /* @tp_basicsize@ */
1994 0, /* @tp_itemsize@ */
1995
1996 0, /* @tp_dealloc@ */
1997 0, /* @tp_print@ */
1998 0, /* @tp_getattr@ */
1999 0, /* @tp_setattr@ */
2000 0, /* @tp_compare@ */
2001 0, /* @tp_repr@ */
2002 0, /* @tp_as_number@ */
2003 0, /* @tp_as_sequence@ */
2004 0, /* @tp_as_mapping@ */
2005 0, /* @tp_hash@ */
2006 0, /* @tp_call@ */
2007 0, /* @tp_str@ */
2008 0, /* @tp_getattro@ */
2009 0, /* @tp_setattro@ */
2010 0, /* @tp_as_buffer@ */
2011 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2012 Py_TPFLAGS_BASETYPE,
2013
2014 /* @tp_doc@ */
06cd26e8 2015"Shake128([perso = STR], [func = STR]): SHAKE128/cSHAKE128 XOF.",
6bd22b53
MW		 2016
2017 0, /* @tp_traverse@ */
2018 0, /* @tp_clear@ */
2019 0, /* @tp_richcompare@ */
2020 0, /* @tp_weaklistoffset@ */
2021 0, /* @tp_iter@ */
2022 0, /* @tp_iternext@ */
2023 0, /* @tp_methods@ */
2024 0, /* @tp_members@ */
2025 0, /* @tp_getset@ */
2026 0, /* @tp_base@ */
2027 0, /* @tp_dict@ */
2028 0, /* @tp_descr_get@ */
2029 0, /* @tp_descr_set@ */
2030 0, /* @tp_dictoffset@ */
2031 0, /* @tp_init@ */
2032 PyType_GenericAlloc, /* @tp_alloc@ */
2033 shake128_pynew, /* @tp_new@ */
2034 0, /* @tp_free@ */
2035 0 /* @tp_is_gc@ */
2036};
2037
2038static PyTypeObject shake256_pytype_skel = {
2039 PyObject_HEAD_INIT(0) 0, /* Header */
2040 "Shake256", /* @tp_name@ */
2041 0, /* @tp_basicsize@ */
2042 0, /* @tp_itemsize@ */
2043
2044 0, /* @tp_dealloc@ */
2045 0, /* @tp_print@ */
2046 0, /* @tp_getattr@ */
2047 0, /* @tp_setattr@ */
2048 0, /* @tp_compare@ */
2049 0, /* @tp_repr@ */
2050 0, /* @tp_as_number@ */
2051 0, /* @tp_as_sequence@ */
2052 0, /* @tp_as_mapping@ */
2053 0, /* @tp_hash@ */
2054 0, /* @tp_call@ */
2055 0, /* @tp_str@ */
2056 0, /* @tp_getattro@ */
2057 0, /* @tp_setattro@ */
2058 0, /* @tp_as_buffer@ */
2059 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2060 Py_TPFLAGS_BASETYPE,
2061
2062 /* @tp_doc@ */
06cd26e8 2063"Shake256([perso = STR], [func = STR]): SHAKE256/cSHAKE256 XOF.",
6bd22b53
MW		 2064
2065 0, /* @tp_traverse@ */
2066 0, /* @tp_clear@ */
2067 0, /* @tp_richcompare@ */
2068 0, /* @tp_weaklistoffset@ */
2069 0, /* @tp_iter@ */
2070 0, /* @tp_iternext@ */
2071 0, /* @tp_methods@ */
2072 0, /* @tp_members@ */
2073 0, /* @tp_getset@ */
2074 0, /* @tp_base@ */
2075 0, /* @tp_dict@ */
2076 0, /* @tp_descr_get@ */
2077 0, /* @tp_descr_set@ */
2078 0, /* @tp_dictoffset@ */
2079 0, /* @tp_init@ */
2080 PyType_GenericAlloc, /* @tp_alloc@ */
2081 shake256_pynew, /* @tp_new@ */
2082 0, /* @tp_free@ */
2083 0 /* @tp_is_gc@ */
2084};
2085
03ed9abb
MW		 2086/*----- Pseudorandom permutations -----------------------------------------*/
2087
2088static PyTypeObject *gcprp_pytype, *gprp_pytype;
2089
2090typedef struct prpinfo {
2091 const char *name;
2092 const octet *keysz;
2093 size_t ctxsz;
2094 size_t blksz;
2095 void (*init)(void *, const void *, size_t);
2096 void (*eblk)(void *, const void *, void *);
2097 void (*dblk)(void *, const void *, void *);
2098} prpinfo;
2099
2100#define PRP_DEF(PRE, pre) \
2101 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
2102 { pre##_init(ctx, k, ksz); } \
2103 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
2104 { \
2105 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
2106 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
2107 } \
2108 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
2109 { \
2110 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
2111 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
2112 } \
2113 static const prpinfo pre##_prpinfo = { \
2114 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
2115 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
2116 };
2117PRPS(PRP_DEF)
2118
2119static const struct prpinfo *const gprptab[] = {
2120#define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
2121 PRPS(PRP_ENTRY)
2122 0
b2687a0a 2123};
03ed9abb
MW		 2124
2125typedef struct gcprp_pyobj {
2126 PyHeapTypeObject ty;
2127 const prpinfo *prp;
2128} gcprp_pyobj;
2129#define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
2130
2131typedef struct gprp_pyobj {
2132 PyObject_HEAD
2133 const prpinfo *prp;
2134} gprp_pyobj;
2135#define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
2136#define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
2137
2138typedef struct prp {
2139 const prpinfo *prp;
2140 void *ctx;
2141} prp;
2142
2143static PyObject *gprp_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
2144{
827f89d7 2145 static const char *const kwlist[] = { "key", 0 };
03ed9abb 2146 char *k;
6b54260d 2147 Py_ssize_t sz;
03ed9abb
MW		 2148 const prpinfo *prp = GCPRP_PRP(ty);
2149 PyObject *me;
2150
827f89d7 2151 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &k, &sz))
03ed9abb
MW		 2152 goto end;
2153 if (keysz(sz, prp->keysz) != sz) VALERR("bad key length");
2154 me = (PyObject *)ty->tp_alloc(ty, 0);
2155 GPRP_PRP(me) = prp;
2156 prp->init(GPRP_CTX(me), k, sz);
2157 Py_INCREF(me);
2158 return (me);
2159end:
b2687a0a 2160 return (0);
03ed9abb
MW		 2161}
2162
2163static void gprp_pydealloc(PyObject *me)
2164 { Py_DECREF(me->ob_type); FREEOBJ(me); }
2165
2166static PyObject *gcprp_pywrap(const prpinfo *prp)
2167{
2168 gcprp_pyobj *g = newtype(gcprp_pytype, 0, prp->name);
2169 g->prp = prp;
24b3d57b
MW		 2170 g->ty.ht_type.tp_basicsize = sizeof(gprp_pyobj) + prp->ctxsz;
2171 g->ty.ht_type.tp_base = gprp_pytype;
03ed9abb 2172 Py_INCREF(gprp_pytype);
24b3d57b
MW		 2173 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2174 Py_TPFLAGS_BASETYPE |
2175 Py_TPFLAGS_HEAPTYPE);
2176 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2177 g->ty.ht_type.tp_free = 0;
2178 g->ty.ht_type.tp_new = gprp_pynew;
dc075750 2179 typeready(&g->ty.ht_type);
03ed9abb
MW		 2180 return ((PyObject *)g);
2181}
2182
2183static PyObject *gcpget_name(PyObject *me, void *hunoz)
2184 { return (PyString_FromString(GCPRP_PRP(me)->name)); }
2185static PyObject *gcpget_keysz(PyObject *me, void *hunoz)
2186 { return (keysz_pywrap(GCPRP_PRP(me)->keysz)); }
2187static PyObject *gcpget_blksz(PyObject *me, void *hunoz)
2188 { return (PyInt_FromLong(GCPRP_PRP(me)->blksz)); }
2189
2190static PyObject *gpmeth_encrypt(PyObject *me, PyObject *arg)
2191{
2192 char *p;
6b54260d 2193 Py_ssize_t n;
03ed9abb
MW		 2194 PyObject *rc = 0;
2195
2196 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &n)) goto end;
2197 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
2198 rc = bytestring_pywrap(0, n);
2199 GPRP_PRP(me)->eblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
2200end:
2201 return (rc);
2202}
2203
2204static PyObject *gpmeth_decrypt(PyObject *me, PyObject *arg)
2205{
2206 char *p;
6b54260d 2207 Py_ssize_t n;
03ed9abb
MW		 2208 PyObject *rc = 0;
2209
2210 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &n)) goto end;
2211 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
2212 rc = bytestring_pywrap(0, n);
2213 GPRP_PRP(me)->dblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
2214end:
2215 return (rc);
2216}
2217
2218static PyGetSetDef gcprp_pygetset[] = {
2219#define GETSETNAME(op, name) gcp##op##_##name
2220 GET (keysz, "CP.keysz -> acceptable key sizes")
2221 GET (blksz, "CP.blksz -> block size")
2222 GET (name, "CP.name -> name of this kind of PRP")
2223#undef GETSETNAME
2224 { 0 }
2225};
2226
2227static PyMethodDef gprp_pymethods[] = {
2228#define METHNAME(name) gpmeth_##name
2229 METH (encrypt, "P.encrypt(PT) -> CT")
2230 METH (decrypt, "P.decrypt(CT) -> PT")
2231#undef METHNAME
2232 { 0 }
2233};
2234
2235static PyTypeObject gcprp_pytype_skel = {
2236 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 2237 "GCPRP", /* @tp_name@ */
03ed9abb
MW		 2238 sizeof(gcprp_pyobj), /* @tp_basicsize@ */
2239 0, /* @tp_itemsize@ */
2240
2241 0, /* @tp_dealloc@ */
2242 0, /* @tp_print@ */
2243 0, /* @tp_getattr@ */
2244 0, /* @tp_setattr@ */
2245 0, /* @tp_compare@ */
2246 0, /* @tp_repr@ */
2247 0, /* @tp_as_number@ */
2248 0, /* @tp_as_sequence@ */
2249 0, /* @tp_as_mapping@ */
2250 0, /* @tp_hash@ */
2251 0, /* @tp_call@ */
2252 0, /* @tp_str@ */
2253 0, /* @tp_getattro@ */
2254 0, /* @tp_setattro@ */
2255 0, /* @tp_as_buffer@ */
2256 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2257 Py_TPFLAGS_BASETYPE,
2258
2259 /* @tp_doc@ */
2260"Pseudorandom permutation metaclass.",
2261
2262 0, /* @tp_traverse@ */
2263 0, /* @tp_clear@ */
2264 0, /* @tp_richcompare@ */
2265 0, /* @tp_weaklistoffset@ */
2266 0, /* @tp_iter@ */
2267 0, /* @tp_iternext@ */
2268 0, /* @tp_methods@ */
2269 0, /* @tp_members@ */
2270 gcprp_pygetset, /* @tp_getset@ */
2271 0, /* @tp_base@ */
2272 0, /* @tp_dict@ */
2273 0, /* @tp_descr_get@ */
2274 0, /* @tp_descr_set@ */
2275 0, /* @tp_dictoffset@ */
2276 0, /* @tp_init@ */
2277 PyType_GenericAlloc, /* @tp_alloc@ */
2278 abstract_pynew, /* @tp_new@ */
2279 0, /* @tp_free@ */
2280 0 /* @tp_is_gc@ */
2281};
2282
2283static PyTypeObject gprp_pytype_skel = {
2284 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 2285 "GPRP", /* @tp_name@ */
03ed9abb
MW		 2286 sizeof(gprp_pyobj), /* @tp_basicsize@ */
2287 0, /* @tp_itemsize@ */
2288
2289 gprp_pydealloc, /* @tp_dealloc@ */
2290 0, /* @tp_print@ */
2291 0, /* @tp_getattr@ */
2292 0, /* @tp_setattr@ */
2293 0, /* @tp_compare@ */
2294 0, /* @tp_repr@ */
2295 0, /* @tp_as_number@ */
2296 0, /* @tp_as_sequence@ */
2297 0, /* @tp_as_mapping@ */
2298 0, /* @tp_hash@ */
2299 0, /* @tp_call@ */
2300 0, /* @tp_str@ */
2301 0, /* @tp_getattro@ */
2302 0, /* @tp_setattro@ */
2303 0, /* @tp_as_buffer@ */
2304 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2305 Py_TPFLAGS_BASETYPE,
2306
2307 /* @tp_doc@ */
2308"Pseudorandom permutation, abstract base class.",
2309
2310 0, /* @tp_traverse@ */
2311 0, /* @tp_clear@ */
2312 0, /* @tp_richcompare@ */
2313 0, /* @tp_weaklistoffset@ */
2314 0, /* @tp_iter@ */
2315 0, /* @tp_iternext@ */
2316 gprp_pymethods, /* @tp_methods@ */
2317 0, /* @tp_members@ */
2318 0, /* @tp_getset@ */
2319 0, /* @tp_base@ */
2320 0, /* @tp_dict@ */
2321 0, /* @tp_descr_get@ */
2322 0, /* @tp_descr_set@ */
2323 0, /* @tp_dictoffset@ */
2324 0, /* @tp_init@ */
2325 PyType_GenericAlloc, /* @tp_alloc@ */
2326 abstract_pynew, /* @tp_new@ */
2327 0, /* @tp_free@ */
2328 0 /* @tp_is_gc@ */
2329};
2330
d7ab1bab 2331/*----- Main code ---------------------------------------------------------*/
2332
89157adc
MW		 2333static PyMethodDef methods[] = {
2334#define METHNAME(func) meth_##func
2335 METH (_KeySZ_fromdl, "\
2336fromdl(N) -> M: convert integer discrete log field size to work factor")
2337 METH (_KeySZ_fromschnorr, "\
2338fromschnorr(N) -> M: convert Schnorr group order to work factor")
2339 METH (_KeySZ_fromif, "\
2340fromif(N) -> M: convert integer factorization problem size to work factor")
2341 METH (_KeySZ_fromec, "\
2342fromec(N) -> M: convert elliptic curve group order to work factor")
2343 METH (_KeySZ_todl, "\
2344todl(N) -> M: convert work factor to integer discrete log field size")
2345 METH (_KeySZ_toschnorr, "\
2346toschnorr(N) -> M: convert work factor to Schnorr group order")
2347 METH (_KeySZ_toif, "\
2348toif(N) -> M: convert work factor to integer factorization problem size")
2349 METH (_KeySZ_toec, "\
2350toec(N) -> M: convert work factor to elliptic curve group order")
a75e68c9
MW		 2351 METH (_KeySZ_toec, "\
2352toec(N) -> M: convert work factor to elliptic curve group order")
2353#define METH_HDANCE(hdance, HDance) METH(hdance##_prf, "\
2354" #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
2355 METH_HDANCE(hsalsa20, "HSalsa20")
2356 METH_HDANCE(hsalsa2012, "HSalsa20/12")
2357 METH_HDANCE(hsalsa208, "HSalsa20/8")
2358 METH_HDANCE(hchacha20, "HChaCha20")
2359 METH_HDANCE(hchacha12, "HChaCha12")
2360 METH_HDANCE(hchacha8, "HChaCha8")
2361#undef METH_DANCE
89157adc
MW		 2362#undef METHNAME
2363 { 0 }
2364};
2365
d7ab1bab 2366void algorithms_pyinit(void)
2367{
2368 INITTYPE(keysz, root);
2369 INITTYPE(keyszany, keysz);
2370 INITTYPE(keyszrange, keysz);
2371 INITTYPE(keyszset, keysz);
2372 INITTYPE(gccipher, type);
2373 INITTYPE(gcipher, root);
2374 INITTYPE(gchash, type);
2375 INITTYPE(ghash, root);
2376 INITTYPE(gcmac, type);
2377 INITTYPE(gmac, type);
2378 INITTYPE(gmhash, ghash);
204d480b
MW		 2379 INITTYPE(poly1305cls, type);
2380 INITTYPE_META(poly1305key, type, poly1305cls);
2381 INITTYPE(poly1305hash, root);
b35fdbe6 2382 INITTYPE(kxvik, root);
6bd22b53
MW		 2383 INITTYPE(shake, root);
2384 INITTYPE(shake128, shake);
2385 INITTYPE(shake256, shake);
03ed9abb
MW		 2386 INITTYPE(gcprp, type);
2387 INITTYPE(gprp, root);
89157adc 2388 addmethods(methods);
d7ab1bab 2389}
2390
d7ab1bab 2391GEN(gcciphers, cipher)
2392GEN(gchashes, hash)
2393GEN(gcmacs, mac)
03ed9abb
MW		 2394#define gcprp prpinfo
2395GEN(gcprps, prp)
d7ab1bab 2396
2397void algorithms_pyinsert(PyObject *mod)
2398{
2399 PyObject *d;
2400 INSERT("KeySZ", keysz_pytype);
2401 INSERT("KeySZAny", keyszany_pytype);
2402 INSERT("KeySZRange", keyszrange_pytype);
2403 INSERT("KeySZSet", keyszset_pytype);
2404 INSERT("GCCipher", gccipher_pytype);
2405 INSERT("GCipher", gcipher_pytype);
2406 INSERT("gcciphers", gcciphers());
2407 INSERT("GCHash", gchash_pytype);
2408 INSERT("GHash", ghash_pytype);
2409 INSERT("gchashes", d = gchashes());
2410 sha_pyobj = PyDict_GetItemString(d, "sha"); Py_INCREF(sha_pyobj);
2411 has160_pyobj = PyDict_GetItemString(d, "has160"); Py_INCREF(has160_pyobj);
2412 INSERT("GCMAC", gcmac_pytype);
2413 INSERT("GMAC", gmac_pytype);
2414 INSERT("GMACHash", gmhash_pytype);
2415 INSERT("gcmacs", gcmacs());
204d480b
MW		 2416 INSERT("Poly1305Class", poly1305cls_pytype);
2417 INSERT("poly1305", poly1305key_pytype);
2418 INSERT("Poly1305Hash", poly1305hash_pytype);
b35fdbe6 2419 INSERT("Keccak1600", kxvik_pytype);
6bd22b53
MW		 2420 INSERT("Shake", shake_pytype);
2421 INSERT("Shake128", shake128_pytype);
2422 INSERT("Shake256", shake256_pytype);
03ed9abb
MW		 2423 INSERT("GCPRP", gcprp_pytype);
2424 INSERT("GPRP", gprp_pytype);
2425 INSERT("gcprps", gcprps());
d7ab1bab 2426}
2427
2428/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings