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algorithms.c: Add bindings for HSalsa20/r and HChaCha/r.
[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
38PyObject *keysz_pywrap(const octet *k)
39{
40 switch (k[0]) {
41 case KSZ_ANY: {
42 keysz_pyobj *o = PyObject_New(keysz_pyobj, keyszany_pytype);
43 o->dfl = k[1];
44 return ((PyObject *)o);
45 } break;
46 case KSZ_RANGE: {
47 keyszrange_pyobj *o =
b2687a0a 48 PyObject_New(keyszrange_pyobj, keyszrange_pytype);
d7ab1bab 49 o->dfl = k[1];
50 o->min = k[2];
51 o->max = k[3];
52 o->mod = k[4];
53 if (!o->mod) o->mod = 1;
54 return ((PyObject *)o);
55 } break;
56 case KSZ_SET: {
57 keyszset_pyobj *o =
b2687a0a 58 PyObject_New(keyszset_pyobj, keyszset_pytype);
d7ab1bab 59 int i, n;
60 o->dfl = k[1];
61 for (i = 0; k[i + 1]; i++) ;
62 n = i; o->set = PyTuple_New(n);
63 for (i = 0; i < n; i++)
64 PyTuple_SET_ITEM(o->set, i, PyInt_FromLong(k[i + 1]));
65 return ((PyObject *)o);
66 } break;
67 default:
68 abort();
69 }
70}
71
72static PyObject *keyszany_pynew(PyTypeObject *ty,
73 PyObject *arg, PyObject *kw)
74{
75 char *kwlist[] = { "default", 0 };
76 int dfl;
77 keysz_pyobj *o;
78
79 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i:new", kwlist, &dfl))
80 goto end;
81 if (dfl < 0) VALERR("key size cannot be negative");
82 o = (keysz_pyobj *)ty->tp_alloc(ty, 0);
83 o->dfl = dfl;
84 return ((PyObject *)o);
85end:
86 return (0);
87}
88
89static PyObject *keyszrange_pynew(PyTypeObject *ty,
90 PyObject *arg, PyObject *kw)
91{
92 char *kwlist[] = { "default", "min", "max", "mod", 0 };
93 int dfl, min = 0, max = 0, mod = 1;
94 keyszrange_pyobj *o;
95
96 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|iii:new", kwlist,
97 &dfl, &min, &max, &mod))
98 goto end;
99 if (dfl < 0 || min < 0 || max < 0)
100 VALERR("key size cannot be negative");
101 if (min > dfl || (max && dfl > max))
102 VALERR("bad key size bounds");
103 if (mod <= 0 || dfl % mod || min % mod || max % mod)
104 VALERR("bad key size modulus");
105 o = (keyszrange_pyobj *)ty->tp_alloc(ty, 0);
106 o->dfl = dfl;
107 o->min = min;
108 o->max = max;
109 o->mod = mod;
110 return ((PyObject *)o);
111end:
112 return (0);
113}
114
115static PyObject *keyszset_pynew(PyTypeObject *ty,
116 PyObject *arg, PyObject *kw)
117{
118 char *kwlist[] = { "default", "set", 0 };
119 int dfl, i, n, xx;
120 PyObject *set = 0;
121 PyObject *x = 0, *l = 0;
122 keyszset_pyobj *o = 0;
123
124 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|O:new", kwlist,
125 &dfl, &set))
126 goto end;
127 if (!set) set = PyTuple_New(0);
128 else Py_INCREF(set);
129 if (!PySequence_Check(set)) TYERR("want a sequence");
130 n = PySequence_Size(set);
131 l = PyList_New(0);
132 if (PyErr_Occurred()) goto end;
133 if (dfl < 0) VALERR("key size cannot be negative");
134 x = PyInt_FromLong(dfl);
135 PyList_Append(l, x);
136 Py_DECREF(x);
137 x = 0;
138 for (i = 0; i < n; i++) {
139 if ((x = PySequence_GetItem(set, i)) == 0) goto end;
140 xx = PyInt_AsLong(x);
141 if (PyErr_Occurred()) goto end;
142 if (xx == dfl) continue;
143 if (xx < 0) VALERR("key size cannot be negative");
144 PyList_Append(l, x);
145 Py_DECREF(x);
b2687a0a 146 x = 0;
d7ab1bab 147 }
148 Py_DECREF(set);
149 if ((set = PySequence_Tuple(l)) == 0) goto end;
150 o = (keyszset_pyobj *)ty->tp_alloc(ty, 0);
151 o->dfl = dfl;
152 o->set = set;
153 Py_INCREF(set);
154end:
155 Py_XDECREF(set);
156 Py_XDECREF(l);
157 Py_XDECREF(x);
158 return ((PyObject *)o);
159}
160
161static PyObject *kaget_min(PyObject *me, void *hunoz)
162 { return (PyInt_FromLong(0)); }
163#define kaget_max kaget_min
164
165static PyObject *ksget_min(PyObject *me, void *hunoz)
166{
167 PyObject *set = ((keyszset_pyobj *)me)->set;
168 int i, n, y, x = -1;
169 n = PyTuple_Size(set);
170 for (i = 0; i < n; i++) {
171 y = PyInt_AsLong(PyTuple_GetItem(set, i));
172 if (x == -1 || y < x) x = y;
173 }
174 return (PyInt_FromLong(x));
175}
176
177static PyObject *ksget_max(PyObject *me, void *hunoz)
178{
179 PyObject *set = ((keyszset_pyobj *)me)->set;
180 int i, n, y, x = -1;
181 n = PyTuple_Size(set);
182 for (i = 0; i < n; i++) {
183 y = PyInt_AsLong(PyTuple_GetItem(set, i));
184 if (y > x) x = y;
185 }
186 return (PyInt_FromLong(x));
187}
188
189static PyMemberDef keysz_pymembers[] = {
190#define MEMBERSTRUCT keysz_pyobj
191#define default dfl /* ugh! */
192 MEMBER(default, T_INT, READONLY, "KSZ.default -> default key size")
193#undef default
194#undef MEMBERSTRUCT
195 { 0 }
196};
197
198static PyGetSetDef keyszany_pygetset[] = {
199#define GETSETNAME(op, name) ka##op##_##name
200 GET (min, "KSZ.min -> smallest allowed key size")
201 GET (max, "KSZ.min -> largest allowed key size")
202#undef GETSETNAME
203 { 0 }
204};
205
206static PyMemberDef keyszrange_pymembers[] = {
207#define MEMBERSTRUCT keyszrange_pyobj
208 MEMBER(min, T_INT, READONLY, "KSZ.min -> smallest allowed key size")
209 MEMBER(max, T_INT, READONLY, "KSZ.min -> largest allowed key size")
210 MEMBER(mod, T_INT, READONLY,
211 "KSZ.mod -> key size must be a multiple of this")
212#undef MEMBERSTRUCT
213 { 0 }
214};
215
216static PyGetSetDef keyszset_pygetset[] = {
217#define GETSETNAME(op, name) ks##op##_##name
218 GET (min, "KSZ.min -> smallest allowed key size")
219 GET (max, "KSZ.min -> largest allowed key size")
220#undef GETSETNAME
221 { 0 }
222};
223
224static PyMemberDef keyszset_pymembers[] = {
225#define MEMBERSTRUCT keyszset_pyobj
226 MEMBER(set, T_OBJECT, READONLY, "KSZ.set -> allowed key sizes")
227#undef MEMBERSTRUCT
228 { 0 }
229};
230
231static PyTypeObject keysz_pytype_skel = {
6d4db0bf 232 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 233 "KeySZ", /* @tp_name@ */
d7ab1bab 234 sizeof(keysz_pyobj), /* @tp_basicsize@ */
235 0, /* @tp_itemsize@ */
236
3aa33042 237 0, /* @tp_dealloc@ */
d7ab1bab 238 0, /* @tp_print@ */
239 0, /* @tp_getattr@ */
240 0, /* @tp_setattr@ */
241 0, /* @tp_compare@ */
242 0, /* @tp_repr@ */
243 0, /* @tp_as_number@ */
244 0, /* @tp_as_sequence@ */
245 0, /* @tp_as_mapping@ */
246 0, /* @tp_hash@ */
247 0, /* @tp_call@ */
248 0, /* @tp_str@ */
249 0, /* @tp_getattro@ */
250 0, /* @tp_setattro@ */
251 0, /* @tp_as_buffer@ */
252 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
253 Py_TPFLAGS_BASETYPE,
254
255 /* @tp_doc@ */
256"Key size constraints.",
257
258 0, /* @tp_traverse@ */
259 0, /* @tp_clear@ */
260 0, /* @tp_richcompare@ */
261 0, /* @tp_weaklistoffset@ */
262 0, /* @tp_iter@ */
963a6148 263 0, /* @tp_iternext@ */
d7ab1bab 264 0, /* @tp_methods@ */
265 keysz_pymembers, /* @tp_members@ */
266 0, /* @tp_getset@ */
267 0, /* @tp_base@ */
268 0, /* @tp_dict@ */
269 0, /* @tp_descr_get@ */
270 0, /* @tp_descr_set@ */
271 0, /* @tp_dictoffset@ */
272 0, /* @tp_init@ */
273 PyType_GenericAlloc, /* @tp_alloc@ */
274 abstract_pynew, /* @tp_new@ */
3aa33042 275 0, /* @tp_free@ */
d7ab1bab 276 0 /* @tp_is_gc@ */
277};
278
279static PyTypeObject keyszany_pytype_skel = {
6d4db0bf 280 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 281 "KeySZAny", /* @tp_name@ */
d7ab1bab 282 sizeof(keysz_pyobj), /* @tp_basicsize@ */
283 0, /* @tp_itemsize@ */
284
3aa33042 285 0, /* @tp_dealloc@ */
d7ab1bab 286 0, /* @tp_print@ */
287 0, /* @tp_getattr@ */
288 0, /* @tp_setattr@ */
289 0, /* @tp_compare@ */
290 0, /* @tp_repr@ */
291 0, /* @tp_as_number@ */
292 0, /* @tp_as_sequence@ */
293 0, /* @tp_as_mapping@ */
294 0, /* @tp_hash@ */
295 0, /* @tp_call@ */
296 0, /* @tp_str@ */
297 0, /* @tp_getattro@ */
298 0, /* @tp_setattro@ */
299 0, /* @tp_as_buffer@ */
300 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
301 Py_TPFLAGS_BASETYPE,
302
303 /* @tp_doc@ */
304"Key size constraints. This object imposes no constraints on size.",
305
306 0, /* @tp_traverse@ */
307 0, /* @tp_clear@ */
308 0, /* @tp_richcompare@ */
309 0, /* @tp_weaklistoffset@ */
310 0, /* @tp_iter@ */
963a6148 311 0, /* @tp_iternext@ */
d7ab1bab 312 0, /* @tp_methods@ */
313 0, /* @tp_members@ */
314 keyszany_pygetset, /* @tp_getset@ */
315 0, /* @tp_base@ */
316 0, /* @tp_dict@ */
317 0, /* @tp_descr_get@ */
318 0, /* @tp_descr_set@ */
319 0, /* @tp_dictoffset@ */
320 0, /* @tp_init@ */
321 PyType_GenericAlloc, /* @tp_alloc@ */
322 keyszany_pynew, /* @tp_new@ */
3aa33042 323 0, /* @tp_free@ */
d7ab1bab 324 0 /* @tp_is_gc@ */
325};
326
327static PyTypeObject keyszrange_pytype_skel = {
6d4db0bf 328 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 329 "KeySZRange", /* @tp_name@ */
d7ab1bab 330 sizeof(keyszrange_pyobj), /* @tp_basicsize@ */
331 0, /* @tp_itemsize@ */
332
3aa33042 333 0, /* @tp_dealloc@ */
d7ab1bab 334 0, /* @tp_print@ */
335 0, /* @tp_getattr@ */
336 0, /* @tp_setattr@ */
337 0, /* @tp_compare@ */
338 0, /* @tp_repr@ */
339 0, /* @tp_as_number@ */
340 0, /* @tp_as_sequence@ */
341 0, /* @tp_as_mapping@ */
342 0, /* @tp_hash@ */
343 0, /* @tp_call@ */
344 0, /* @tp_str@ */
345 0, /* @tp_getattro@ */
346 0, /* @tp_setattro@ */
347 0, /* @tp_as_buffer@ */
348 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
349 Py_TPFLAGS_BASETYPE,
350
351 /* @tp_doc@ */
352"Key size constraints. This object asserts minimum and maximum (if\n\
353sizes, and requires the key length to be a multiple of some value.",
354
355 0, /* @tp_traverse@ */
356 0, /* @tp_clear@ */
357 0, /* @tp_richcompare@ */
358 0, /* @tp_weaklistoffset@ */
359 0, /* @tp_iter@ */
963a6148 360 0, /* @tp_iternext@ */
d7ab1bab 361 0, /* @tp_methods@ */
362 keyszrange_pymembers, /* @tp_members@ */
363 0, /* @tp_getset@ */
364 0, /* @tp_base@ */
365 0, /* @tp_dict@ */
366 0, /* @tp_descr_get@ */
367 0, /* @tp_descr_set@ */
368 0, /* @tp_dictoffset@ */
369 0, /* @tp_init@ */
370 PyType_GenericAlloc, /* @tp_alloc@ */
371 keyszrange_pynew, /* @tp_new@ */
3aa33042 372 0, /* @tp_free@ */
d7ab1bab 373 0 /* @tp_is_gc@ */
374};
375
376static PyTypeObject keyszset_pytype_skel = {
6d4db0bf 377 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 378 "KeySZSet", /* @tp_name@ */
d7ab1bab 379 sizeof(keyszset_pyobj), /* @tp_basicsize@ */
380 0, /* @tp_itemsize@ */
381
3aa33042 382 0, /* @tp_dealloc@ */
d7ab1bab 383 0, /* @tp_print@ */
384 0, /* @tp_getattr@ */
385 0, /* @tp_setattr@ */
386 0, /* @tp_compare@ */
387 0, /* @tp_repr@ */
388 0, /* @tp_as_number@ */
389 0, /* @tp_as_sequence@ */
390 0, /* @tp_as_mapping@ */
391 0, /* @tp_hash@ */
392 0, /* @tp_call@ */
393 0, /* @tp_str@ */
394 0, /* @tp_getattro@ */
395 0, /* @tp_setattro@ */
396 0, /* @tp_as_buffer@ */
397 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
398 Py_TPFLAGS_BASETYPE,
399
400 /* @tp_doc@ */
401"Key size constraints. This object requires the key to be one of a\n\
402few listed sizes.",
403
404 0, /* @tp_traverse@ */
405 0, /* @tp_clear@ */
406 0, /* @tp_richcompare@ */
407 0, /* @tp_weaklistoffset@ */
408 0, /* @tp_iter@ */
963a6148 409 0, /* @tp_iternext@ */
d7ab1bab 410 0, /* @tp_methods@ */
411 keyszset_pymembers, /* @tp_members@ */
412 keyszset_pygetset, /* @tp_getset@ */
413 0, /* @tp_base@ */
414 0, /* @tp_dict@ */
415 0, /* @tp_descr_get@ */
416 0, /* @tp_descr_set@ */
417 0, /* @tp_dictoffset@ */
418 0, /* @tp_init@ */
419 PyType_GenericAlloc, /* @tp_alloc@ */
420 keyszset_pynew, /* @tp_new@ */
3aa33042 421 0, /* @tp_free@ */
d7ab1bab 422 0 /* @tp_is_gc@ */
423};
424
89157adc
MW		 425#define KSZCONVOP(op) \
426 static PyObject *meth__KeySZ_##op(PyObject *me, PyObject *arg) \
427 { \
428 double x, y; \
429 if (!PyArg_ParseTuple(arg, "Od:" #op, &me, &x)) return (0); \
430 y = keysz_##op(x); \
431 return (PyFloat_FromDouble(y)); \
432 }
433KSZCONVOP(fromdl)
434KSZCONVOP(fromschnorr)
435KSZCONVOP(fromif)
436KSZCONVOP(fromec)
437KSZCONVOP(todl)
438KSZCONVOP(toschnorr)
439KSZCONVOP(toif)
440KSZCONVOP(toec)
441#undef KSZCONVOP
442
d7ab1bab 443/*----- Symmetric encryption ----------------------------------------------*/
444
445PyTypeObject *gccipher_pytype, *gcipher_pytype;
446
447CONVFUNC(gccipher, gccipher *, GCCIPHER_CC)
448CONVFUNC(gcipher, gcipher *, GCIPHER_C)
449
450PyObject *gcipher_pywrap(PyObject *cobj, gcipher *c, unsigned f)
451{
452 gcipher_pyobj *g;
453 if (!cobj) cobj = gccipher_pywrap((/*unconst*/ gccipher *)GC_CLASS(c));
454 else Py_INCREF(cobj);
455 g = PyObject_NEW(gcipher_pyobj, (PyTypeObject *)cobj);
456 g->c = c;
457 g->f = f;
b2687a0a 458 return ((PyObject *)g);
d7ab1bab 459}
460
461static PyObject *gcipher_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
462{
463 char *kwlist[] = { "k", 0 };
464 char *k;
465 int sz;
466
467 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
468 goto end;
469 if (keysz(sz, GCCIPHER_CC(ty)->keysz) != sz) VALERR("bad key length");
470 return (gcipher_pywrap((PyObject *)ty,
471 GC_INIT(GCCIPHER_CC(ty), k, sz),
472 f_freeme));
473end:
b2687a0a 474 return (0);
d7ab1bab 475}
476
477PyObject *gccipher_pywrap(gccipher *cc)
478{
df9f8366 479 gccipher_pyobj *g = newtype(gccipher_pytype, 0, cc->name);
d7ab1bab 480 g->cc = cc;
24b3d57b
MW		 481 g->ty.ht_type.tp_basicsize = sizeof(gcipher_pyobj);
482 g->ty.ht_type.tp_base = gcipher_pytype;
d7ab1bab 483 Py_INCREF(gcipher_pytype);
24b3d57b
MW		 484 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
485 Py_TPFLAGS_BASETYPE |
486 Py_TPFLAGS_HEAPTYPE);
487 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
488 g->ty.ht_type.tp_free = 0;
489 g->ty.ht_type.tp_new = gcipher_pynew;
dc075750 490 typeready(&g->ty.ht_type);
d7ab1bab 491 return ((PyObject *)g);
492}
493
494static void gcipher_pydealloc(PyObject *me)
495{
496 if (GCIPHER_F(me) & f_freeme)
497 GC_DESTROY(GCIPHER_C(me));
498 Py_DECREF(me->ob_type);
3aa33042 499 FREEOBJ(me);
d7ab1bab 500}
501
502static PyObject *gccget_name(PyObject *me, void *hunoz)
503 { return (PyString_FromString(GCCIPHER_CC(me)->name)); }
504
505static PyObject *gccget_keysz(PyObject *me, void *hunoz)
506 { return (keysz_pywrap(GCCIPHER_CC(me)->keysz)); }
507
508static PyObject *gccget_blksz(PyObject *me, void *hunoz)
509 { return (PyInt_FromLong(GCCIPHER_CC(me)->blksz)); }
510
511static PyObject *gcmeth_encrypt(PyObject *me, PyObject *arg)
512{
513 char *p;
514 int sz;
515 PyObject *rc = 0;
516
517 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &sz)) return (0);
518 rc = bytestring_pywrap(0, sz);
519 GC_ENCRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz);
520 return (rc);
521}
522
523static PyObject *gcmeth_enczero(PyObject *me, PyObject *arg)
524{
525 char *p;
526 int sz;
527 PyObject *rc = 0;
528
529 if (!PyArg_ParseTuple(arg, "i:enczero", &sz)) return (0);
530 rc = bytestring_pywrap(0, sz);
531 p = PyString_AS_STRING(rc);
532 memset(p, 0, sz);
533 GC_ENCRYPT(GCIPHER_C(me), p, p, sz);
534 return (rc);
535}
536
537static PyObject *gcmeth_decrypt(PyObject *me, PyObject *arg)
538{
539 char *p;
540 int sz;
541 PyObject *rc = 0;
542
543 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &sz)) return (0);
544 rc = bytestring_pywrap(0, sz);
545 GC_DECRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz);
546 return (rc);
547}
548
549static PyObject *gcmeth_deczero(PyObject *me, PyObject *arg)
550{
551 char *p;
552 int sz;
553 PyObject *rc = 0;
554
555 if (!PyArg_ParseTuple(arg, "i:deczero", &sz)) return (0);
556 rc = bytestring_pywrap(0, sz);
557 p = PyString_AS_STRING(rc);
558 memset(p, 0, sz);
559 GC_DECRYPT(GCIPHER_C(me), p, p, sz);
560 return (rc);
561}
562
563static PyObject *gcmeth_setiv(PyObject *me, PyObject *arg)
564{
565 char *p;
566 int sz;
567
568 if (!PyArg_ParseTuple(arg, "s#:setiv", &p, &sz)) goto end;
569 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
570 if (sz != GC_CLASS(GCIPHER_C(me))->blksz) VALERR("bad IV length");
571 GC_SETIV(GCIPHER_C(me), p);
572 RETURN_ME;
573end:
574 return (0);
575}
576
577static PyObject *gcmeth_bdry(PyObject *me, PyObject *arg)
578{
579 if (!PyArg_ParseTuple(arg, ":bdry")) goto end;
580 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
581 GC_BDRY(GCIPHER_C(me));
582 RETURN_ME;
583end:
584 return (0);
585}
586
587static PyGetSetDef gccipher_pygetset[] = {
588#define GETSETNAME(op, name) gcc##op##_##name
589 GET (keysz, "CC.keysz -> acceptable key sizes")
590 GET (blksz, "CC.blksz -> block size, or zero")
591 GET (name, "CC.name -> name of this kind of cipher")
592#undef GETSETNAME
593 { 0 }
594};
595
596static PyMethodDef gcipher_pymethods[] = {
597#define METHNAME(name) gcmeth_##name
598 METH (encrypt, "C.encrypt(PT) -> CT")
599 METH (enczero, "C.enczero(N) -> CT")
600 METH (decrypt, "C.decrypt(CT) -> PT")
601 METH (deczero, "C.deczero(N) -> PT")
602 METH (setiv, "C.setiv(IV)")
603 METH (bdry, "C.bdry()")
604#undef METHNAME
605 { 0 }
606};
607
608static PyTypeObject gccipher_pytype_skel = {
6d4db0bf 609 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 610 "GCCipher", /* @tp_name@ */
d7ab1bab 611 sizeof(gccipher_pyobj), /* @tp_basicsize@ */
612 0, /* @tp_itemsize@ */
613
614 0, /* @tp_dealloc@ */
615 0, /* @tp_print@ */
616 0, /* @tp_getattr@ */
617 0, /* @tp_setattr@ */
618 0, /* @tp_compare@ */
619 0, /* @tp_repr@ */
620 0, /* @tp_as_number@ */
621 0, /* @tp_as_sequence@ */
622 0, /* @tp_as_mapping@ */
623 0, /* @tp_hash@ */
624 0, /* @tp_call@ */
625 0, /* @tp_str@ */
626 0, /* @tp_getattro@ */
627 0, /* @tp_setattro@ */
628 0, /* @tp_as_buffer@ */
629 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
630 Py_TPFLAGS_BASETYPE,
631
632 /* @tp_doc@ */
633"Symmetric cipher metaclass.",
634
635 0, /* @tp_traverse@ */
636 0, /* @tp_clear@ */
637 0, /* @tp_richcompare@ */
638 0, /* @tp_weaklistoffset@ */
639 0, /* @tp_iter@ */
963a6148 640 0, /* @tp_iternext@ */
d7ab1bab 641 0, /* @tp_methods@ */
642 0, /* @tp_members@ */
643 gccipher_pygetset, /* @tp_getset@ */
644 0, /* @tp_base@ */
645 0, /* @tp_dict@ */
646 0, /* @tp_descr_get@ */
647 0, /* @tp_descr_set@ */
648 0, /* @tp_dictoffset@ */
649 0, /* @tp_init@ */
650 PyType_GenericAlloc, /* @tp_alloc@ */
651 abstract_pynew, /* @tp_new@ */
3aa33042 652 0, /* @tp_free@ */
d7ab1bab 653 0 /* @tp_is_gc@ */
654};
655
656static PyTypeObject gcipher_pytype_skel = {
6d4db0bf 657 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 658 "GCipher", /* @tp_name@ */
d7ab1bab 659 sizeof(gcipher_pyobj), /* @tp_basicsize@ */
660 0, /* @tp_itemsize@ */
661
662 gcipher_pydealloc, /* @tp_dealloc@ */
663 0, /* @tp_print@ */
664 0, /* @tp_getattr@ */
665 0, /* @tp_setattr@ */
666 0, /* @tp_compare@ */
667 0, /* @tp_repr@ */
668 0, /* @tp_as_number@ */
669 0, /* @tp_as_sequence@ */
670 0, /* @tp_as_mapping@ */
671 0, /* @tp_hash@ */
672 0, /* @tp_call@ */
673 0, /* @tp_str@ */
674 0, /* @tp_getattro@ */
675 0, /* @tp_setattro@ */
676 0, /* @tp_as_buffer@ */
677 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
678 Py_TPFLAGS_BASETYPE,
679
680 /* @tp_doc@ */
681"Symmetric cipher, abstract base class.",
682
683 0, /* @tp_traverse@ */
684 0, /* @tp_clear@ */
685 0, /* @tp_richcompare@ */
686 0, /* @tp_weaklistoffset@ */
687 0, /* @tp_iter@ */
963a6148 688 0, /* @tp_iternext@ */
d7ab1bab 689 gcipher_pymethods, /* @tp_methods@ */
690 0, /* @tp_members@ */
691 0, /* @tp_getset@ */
692 0, /* @tp_base@ */
693 0, /* @tp_dict@ */
694 0, /* @tp_descr_get@ */
695 0, /* @tp_descr_set@ */
696 0, /* @tp_dictoffset@ */
697 0, /* @tp_init@ */
698 PyType_GenericAlloc, /* @tp_alloc@ */
699 abstract_pynew, /* @tp_new@ */
3aa33042 700 0, /* @tp_free@ */
d7ab1bab 701 0 /* @tp_is_gc@ */
702};
703
704/*----- Hash functions ----------------------------------------------------*/
705
706PyTypeObject *gchash_pytype, *ghash_pytype;
707
708CONVFUNC(gchash, gchash *, GCHASH_CH)
709CONVFUNC(ghash, ghash *, GHASH_H)
710
711static PyObject *ghash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
712{
713 char *kwlist[] = { 0 };
714 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist))
715 goto end;
716 return (ghash_pywrap((PyObject *)ty, GH_INIT(GCHASH_CH(ty)), f_freeme));
717end:
b2687a0a 718 return (0);
d7ab1bab 719}
720
721PyObject *gchash_pywrap(gchash *ch)
722{
df9f8366 723 gchash_pyobj *g = newtype(gchash_pytype, 0, ch->name);
d7ab1bab 724 g->ch = ch;
24b3d57b
MW		 725 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
726 g->ty.ht_type.tp_base = ghash_pytype;
d7ab1bab 727 Py_INCREF(ghash_pytype);
24b3d57b
MW		 728 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
729 Py_TPFLAGS_BASETYPE |
730 Py_TPFLAGS_HEAPTYPE);
731 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
732 g->ty.ht_type.tp_free = 0;
733 g->ty.ht_type.tp_new = ghash_pynew;
dc075750 734 typeready(&g->ty.ht_type);
d7ab1bab 735 return ((PyObject *)g);
736}
737
738PyObject *ghash_pywrap(PyObject *cobj, ghash *h, unsigned f)
739{
740 ghash_pyobj *g;
741 if (!cobj) cobj = gchash_pywrap((/*unconst*/ gchash *)GH_CLASS(h));
742 else Py_INCREF(cobj);
743 g = PyObject_NEW(ghash_pyobj, (PyTypeObject *)cobj);
744 g->h = h;
745 g->f = f;
b2687a0a 746 return ((PyObject *)g);
d7ab1bab 747}
748
749static void ghash_pydealloc(PyObject *me)
750{
751 if (GHASH_F(me) & f_freeme)
752 GH_DESTROY(GHASH_H(me));
753 Py_DECREF(me->ob_type);
3aa33042 754 FREEOBJ(me);
d7ab1bab 755}
756
757static PyObject *gchget_name(PyObject *me, void *hunoz)
758 { return (PyString_FromString(GCHASH_CH(me)->name)); }
759
760static PyObject *gchget_hashsz(PyObject *me, void *hunoz)
761 { return (PyInt_FromLong(GCHASH_CH(me)->hashsz)); }
762
763static PyObject *gchget_bufsz(PyObject *me, void *hunoz)
764 { return (PyInt_FromLong(GCHASH_CH(me)->bufsz)); }
765
766static PyObject *ghmeth_hash(PyObject *me, PyObject *arg)
767{
768 char *p;
769 int sz;
770 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
771 GH_HASH(GHASH_H(me), p, sz);
772 RETURN_ME;
773}
774
46e6ad89 775#define GHMETH_HASHU_(n, W, w) \
776 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
777 { \
778 uint##n x; \
779 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
780 GH_HASHU##W(GHASH_H(me), x); \
781 RETURN_ME; \
782 end: \
783 return (0); \
784 }
785DOUINTCONV(GHMETH_HASHU_)
786
787#define GHMETH_HASHBUF_(n, W, w) \
788 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
789 { \
790 char *p; \
791 int sz; \
792 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
793 if (sz > MASK##n) TYERR("string too long"); \
794 GH_HASHBUF##W(GHASH_H(me), p, sz); \
795 RETURN_ME; \
796 end: \
797 return (0); \
798 }
799DOUINTCONV(GHMETH_HASHBUF_)
800
801static PyObject *ghmeth_hashstrz(PyObject *me, PyObject *arg)
802{
803 char *p;
804 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
805 GH_HASHSTRZ(GHASH_H(me), p);
806 RETURN_ME;
807}
808
07bcd768
MW		 809static PyObject *ghmeth_done(PyObject *me, PyObject *arg)
810{
811 ghash *g;
812 PyObject *rc;
813 if (!PyArg_ParseTuple(arg, ":done")) return (0);
814 g = GH_COPY(GHASH_H(me));
815 rc = bytestring_pywrap(0, g->ops->c->hashsz);
816 GH_DONE(g, PyString_AS_STRING(rc));
817 GH_DESTROY(g);
818 return (rc);
819}
820
821static PyGetSetDef gchash_pygetset[] = {
822#define GETSETNAME(op, name) gch##op##_##name
823 GET (bufsz, "CH.bufsz -> hash buffer size, or zero")
824 GET (hashsz, "CH.hashsz -> hash output size")
825 GET (name, "CH.name -> name of this kind of hash")
826#undef GETSETNAME
827 { 0 }
828};
829
d7ab1bab 830static PyMethodDef ghash_pymethods[] = {
831#define METHNAME(name) ghmeth_##name
832 METH (hash, "H.hash(M)")
46e6ad89 833#define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
834 DOUINTCONV(METHU_)
07bcd768 835#undef METHU_
46e6ad89 836#define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
837 DOUINTCONV(METHBUF_)
07bcd768 838#undef METHBUF_
46e6ad89 839 METH (hashstrz, "H.hashstrz(STRING)")
d7ab1bab 840 METH (done, "H.done() -> HASH")
841#undef METHNAME
842 { 0 }
843};
844
845static PyTypeObject gchash_pytype_skel = {
6d4db0bf 846 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 847 "GCHash", /* @tp_name@ */
d7ab1bab 848 sizeof(gchash_pyobj), /* @tp_basicsize@ */
849 0, /* @tp_itemsize@ */
850
851 0, /* @tp_dealloc@ */
852 0, /* @tp_print@ */
853 0, /* @tp_getattr@ */
854 0, /* @tp_setattr@ */
855 0, /* @tp_compare@ */
856 0, /* @tp_repr@ */
857 0, /* @tp_as_number@ */
858 0, /* @tp_as_sequence@ */
859 0, /* @tp_as_mapping@ */
860 0, /* @tp_hash@ */
861 0, /* @tp_call@ */
862 0, /* @tp_str@ */
863 0, /* @tp_getattro@ */
864 0, /* @tp_setattro@ */
865 0, /* @tp_as_buffer@ */
866 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
867 Py_TPFLAGS_BASETYPE,
868
869 /* @tp_doc@ */
870"Hash function metaclass.",
871
872 0, /* @tp_traverse@ */
873 0, /* @tp_clear@ */
874 0, /* @tp_richcompare@ */
875 0, /* @tp_weaklistoffset@ */
876 0, /* @tp_iter@ */
963a6148 877 0, /* @tp_iternext@ */
d7ab1bab 878 0, /* @tp_methods@ */
879 0, /* @tp_members@ */
880 gchash_pygetset, /* @tp_getset@ */
881 0, /* @tp_base@ */
882 0, /* @tp_dict@ */
883 0, /* @tp_descr_get@ */
884 0, /* @tp_descr_set@ */
885 0, /* @tp_dictoffset@ */
886 0, /* @tp_init@ */
887 PyType_GenericAlloc, /* @tp_alloc@ */
888 abstract_pynew, /* @tp_new@ */
3aa33042 889 0, /* @tp_free@ */
d7ab1bab 890 0 /* @tp_is_gc@ */
891};
892
893static PyTypeObject ghash_pytype_skel = {
6d4db0bf 894 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 895 "GHash", /* @tp_name@ */
d7ab1bab 896 sizeof(ghash_pyobj), /* @tp_basicsize@ */
897 0, /* @tp_itemsize@ */
898
899 ghash_pydealloc, /* @tp_dealloc@ */
900 0, /* @tp_print@ */
901 0, /* @tp_getattr@ */
902 0, /* @tp_setattr@ */
903 0, /* @tp_compare@ */
904 0, /* @tp_repr@ */
905 0, /* @tp_as_number@ */
906 0, /* @tp_as_sequence@ */
907 0, /* @tp_as_mapping@ */
908 0, /* @tp_hash@ */
909 0, /* @tp_call@ */
910 0, /* @tp_str@ */
911 0, /* @tp_getattro@ */
912 0, /* @tp_setattro@ */
913 0, /* @tp_as_buffer@ */
914 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
915 Py_TPFLAGS_BASETYPE,
916
917 /* @tp_doc@ */
918"Hash function, abstract base class.",
919
920 0, /* @tp_traverse@ */
921 0, /* @tp_clear@ */
922 0, /* @tp_richcompare@ */
923 0, /* @tp_weaklistoffset@ */
924 0, /* @tp_iter@ */
963a6148 925 0, /* @tp_iternext@ */
d7ab1bab 926 ghash_pymethods, /* @tp_methods@ */
927 0, /* @tp_members@ */
928 0, /* @tp_getset@ */
929 0, /* @tp_base@ */
930 0, /* @tp_dict@ */
931 0, /* @tp_descr_get@ */
932 0, /* @tp_descr_set@ */
933 0, /* @tp_dictoffset@ */
934 0, /* @tp_init@ */
935 PyType_GenericAlloc, /* @tp_alloc@ */
936 abstract_pynew, /* @tp_new@ */
3aa33042 937 0, /* @tp_free@ */
d7ab1bab 938 0 /* @tp_is_gc@ */
939};
940
941/*----- Message authentication --------------------------------------------*/
942
943PyTypeObject *gcmac_pytype, *gmac_pytype, *gmhash_pytype;
944
945CONVFUNC(gcmac, gcmac *, GCMAC_CM)
946CONVFUNC(gmac, gmac *, GMAC_M)
947CONVFUNC(gmhash, ghash *, GHASH_H)
948
949static PyObject *gmac_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
950{
951 char *kwlist[] = { "k", 0 };
952 char *k;
953 int sz;
954
955 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
956 goto end;
957 if (keysz(sz, GCMAC_CM(ty)->keysz) != sz) VALERR("bad key length");
958 return (gmac_pywrap((PyObject *)ty,
959 GM_KEY(GCMAC_CM(ty), k, sz),
960 f_freeme));
961end:
b2687a0a 962 return (0);
d7ab1bab 963}
964
965static PyObject *gmhash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
966{
967 char *kwlist[] = { 0 };
968 ghash_pyobj *g;
969
970 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist)) return (0);
971 g = PyObject_NEW(ghash_pyobj, ty);
972 g->h = GM_INIT(GMAC_M(ty));
973 g->f = f_freeme;
974 Py_INCREF(ty);
975 return ((PyObject *)g);
976}
977
978PyObject *gcmac_pywrap(gcmac *cm)
979{
df9f8366 980 gcmac_pyobj *g = newtype(gcmac_pytype, 0, cm->name);
d7ab1bab 981 g->cm = cm;
24b3d57b
MW		 982 g->ty.ht_type.tp_basicsize = sizeof(gmac_pyobj);
983 g->ty.ht_type.tp_base = gmac_pytype;
d7ab1bab 984 Py_INCREF(gmac_pytype);
24b3d57b
MW		 985 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
986 Py_TPFLAGS_BASETYPE |
987 Py_TPFLAGS_HEAPTYPE);
988 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
989 g->ty.ht_type.tp_free = 0;
990 g->ty.ht_type.tp_new = gmac_pynew;
dc075750 991 typeready(&g->ty.ht_type);
d7ab1bab 992 return ((PyObject *)g);
993}
994
995PyObject *gmac_pywrap(PyObject *cobj, gmac *m, unsigned f)
996{
997 gmac_pyobj *g;
998 if (!cobj) cobj = gcmac_pywrap((/*unconst*/ gcmac *)GM_CLASS(m));
999 else Py_INCREF(cobj);
df9f8366 1000 g = newtype((PyTypeObject *)cobj, 0, 0);
828b1388 1001 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
24b3d57b
MW		 1002 g->ty.ht_name = PyString_FromFormat("%s(keyed)", m->ops->c->name);
1003 g->ty.ht_type.tp_name = PyString_AS_STRING(g->ty.ht_name);
1004 g->ty.ht_type.tp_base = gmhash_pytype;
d7ab1bab 1005 Py_INCREF(gmac_pytype);
24b3d57b
MW		 1006 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1007 Py_TPFLAGS_BASETYPE |
1008 Py_TPFLAGS_HEAPTYPE);
1009 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1010 g->ty.ht_type.tp_free = 0;
1011 g->ty.ht_type.tp_new = gmhash_pynew;
dc075750 1012 typeready(&g->ty.ht_type);
d7ab1bab 1013 g->m = m;
1014 g->f = f;
b2687a0a 1015 return ((PyObject *)g);
d7ab1bab 1016}
1017
1018static void gmac_pydealloc(PyObject *me)
1019{
1020 if (GMAC_F(me) & f_freeme)
1021 GM_DESTROY(GMAC_M(me));
1022 Py_DECREF(me->ob_type);
d7ab1bab 1023 PyType_Type.tp_dealloc(me);
1024}
1025
1026static PyObject *gcmget_name(PyObject *me, void *hunoz)
1027 { return (PyString_FromString(GCMAC_CM(me)->name)); }
1028
1029static PyObject *gcmget_keysz(PyObject *me, void *hunoz)
1030 { return (keysz_pywrap(GCMAC_CM(me)->keysz)); }
1031
1032static PyObject *gcmget_tagsz(PyObject *me, void *hunoz)
1033 { return (PyInt_FromLong(GCMAC_CM(me)->hashsz)); }
1034
1035static PyGetSetDef gcmac_pygetset[] = {
1036#define GETSETNAME(op, name) gcm##op##_##name
1037 GET (keysz, "CM.keysz -> acceptable key sizes")
1038 GET (tagsz, "CM.tagsz -> MAC output size")
1039 GET (name, "CM.name -> name of this kind of MAC")
1040#undef GETSETNAME
1041 { 0 }
1042};
1043
1044static PyTypeObject gcmac_pytype_skel = {
6d4db0bf 1045 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1046 "GCMAC", /* @tp_name@ */
d7ab1bab 1047 sizeof(gchash_pyobj), /* @tp_basicsize@ */
1048 0, /* @tp_itemsize@ */
1049
1050 0, /* @tp_dealloc@ */
1051 0, /* @tp_print@ */
1052 0, /* @tp_getattr@ */
1053 0, /* @tp_setattr@ */
1054 0, /* @tp_compare@ */
1055 0, /* @tp_repr@ */
1056 0, /* @tp_as_number@ */
1057 0, /* @tp_as_sequence@ */
1058 0, /* @tp_as_mapping@ */
1059 0, /* @tp_hash@ */
1060 0, /* @tp_call@ */
1061 0, /* @tp_str@ */
1062 0, /* @tp_getattro@ */
1063 0, /* @tp_setattro@ */
1064 0, /* @tp_as_buffer@ */
1065 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1066 Py_TPFLAGS_BASETYPE,
1067
1068 /* @tp_doc@ */
1069"Message authentication code metametaclass.",
1070
1071 0, /* @tp_traverse@ */
1072 0, /* @tp_clear@ */
1073 0, /* @tp_richcompare@ */
1074 0, /* @tp_weaklistoffset@ */
1075 0, /* @tp_iter@ */
963a6148 1076 0, /* @tp_iternext@ */
d7ab1bab 1077 0, /* @tp_methods@ */
1078 0, /* @tp_members@ */
1079 gcmac_pygetset, /* @tp_getset@ */
1080 0, /* @tp_base@ */
1081 0, /* @tp_dict@ */
1082 0, /* @tp_descr_get@ */
1083 0, /* @tp_descr_set@ */
1084 0, /* @tp_dictoffset@ */
1085 0, /* @tp_init@ */
1086 PyType_GenericAlloc, /* @tp_alloc@ */
1087 abstract_pynew, /* @tp_new@ */
3aa33042 1088 0, /* @tp_free@ */
d7ab1bab 1089 0 /* @tp_is_gc@ */
1090};
1091
1092static PyTypeObject gmac_pytype_skel = {
6d4db0bf 1093 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1094 "GMAC", /* @tp_name@ */
d7ab1bab 1095 sizeof(gmac_pyobj), /* @tp_basicsize@ */
1096 0, /* @tp_itemsize@ */
1097
1098 gmac_pydealloc, /* @tp_dealloc@ */
1099 0, /* @tp_print@ */
1100 0, /* @tp_getattr@ */
1101 0, /* @tp_setattr@ */
1102 0, /* @tp_compare@ */
1103 0, /* @tp_repr@ */
1104 0, /* @tp_as_number@ */
1105 0, /* @tp_as_sequence@ */
1106 0, /* @tp_as_mapping@ */
1107 0, /* @tp_hash@ */
1108 0, /* @tp_call@ */
1109 0, /* @tp_str@ */
1110 0, /* @tp_getattro@ */
1111 0, /* @tp_setattro@ */
1112 0, /* @tp_as_buffer@ */
1113 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1114 Py_TPFLAGS_BASETYPE,
1115
1116 /* @tp_doc@ */
1117"Message authentication code metaclass, abstract base class.",
1118
1119 0, /* @tp_traverse@ */
1120 0, /* @tp_clear@ */
1121 0, /* @tp_richcompare@ */
1122 0, /* @tp_weaklistoffset@ */
1123 0, /* @tp_iter@ */
963a6148 1124 0, /* @tp_iternext@ */
d7ab1bab 1125 0, /* @tp_methods@ */
1126 0, /* @tp_members@ */
1127 0, /* @tp_getset@ */
1128 0, /* @tp_base@ */
1129 0, /* @tp_dict@ */
1130 0, /* @tp_descr_get@ */
1131 0, /* @tp_descr_set@ */
1132 0, /* @tp_dictoffset@ */
1133 0, /* @tp_init@ */
1134 PyType_GenericAlloc, /* @tp_alloc@ */
1135 abstract_pynew, /* @tp_new@ */
3aa33042 1136 0, /* @tp_free@ */
d7ab1bab 1137 0 /* @tp_is_gc@ */
1138};
1139
1140static PyTypeObject gmhash_pytype_skel = {
6d4db0bf 1141 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1142 "GMACHash", /* @tp_name@ */
d7ab1bab 1143 sizeof(ghash_pyobj), /* @tp_basicsize@ */
1144 0, /* @tp_itemsize@ */
1145
1146 ghash_pydealloc, /* @tp_dealloc@ */
1147 0, /* @tp_print@ */
1148 0, /* @tp_getattr@ */
1149 0, /* @tp_setattr@ */
1150 0, /* @tp_compare@ */
1151 0, /* @tp_repr@ */
1152 0, /* @tp_as_number@ */
1153 0, /* @tp_as_sequence@ */
1154 0, /* @tp_as_mapping@ */
1155 0, /* @tp_hash@ */
1156 0, /* @tp_call@ */
1157 0, /* @tp_str@ */
1158 0, /* @tp_getattro@ */
1159 0, /* @tp_setattro@ */
1160 0, /* @tp_as_buffer@ */
1161 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1162 Py_TPFLAGS_BASETYPE,
1163
1164 /* @tp_doc@ */
1165"Message authentication code, abstract base class.",
1166
1167 0, /* @tp_traverse@ */
1168 0, /* @tp_clear@ */
1169 0, /* @tp_richcompare@ */
1170 0, /* @tp_weaklistoffset@ */
1171 0, /* @tp_iter@ */
963a6148 1172 0, /* @tp_iternext@ */
d7ab1bab 1173 0, /* @tp_methods@ */
1174 0, /* @tp_members@ */
1175 0, /* @tp_getset@ */
1176 0, /* @tp_base@ */
1177 0, /* @tp_dict@ */
1178 0, /* @tp_descr_get@ */
1179 0, /* @tp_descr_set@ */
1180 0, /* @tp_dictoffset@ */
1181 0, /* @tp_init@ */
1182 PyType_GenericAlloc, /* @tp_alloc@ */
1183 abstract_pynew, /* @tp_new@ */
3aa33042 1184 0, /* @tp_free@ */
d7ab1bab 1185 0 /* @tp_is_gc@ */
1186};
1187
204d480b
MW		 1188/*----- Special snowflake for Poly1305 ------------------------------------*/
1189
1190PyTypeObject *poly1305cls_pytype, *poly1305key_pytype, *poly1305hash_pytype;
1191
1192typedef struct poly1305key_pyobj {
1193 PyHeapTypeObject ty;
1194 poly1305_key k;
1195} poly1305key_pyobj;
1196
1197typedef struct poly1305hash_pyobj {
1198 PyObject_HEAD
1199 unsigned f;
1200#define f_mask 1u
1201 poly1305_ctx ctx;
1202} poly1305hash_pyobj;
1203
1204#define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
1205#define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
1206CONVFUNC(poly1305hash, poly1305_ctx *, P1305_CTX)
1207
1208static PyObject *poly1305hash_pynew(PyTypeObject *ty,
1209 PyObject *arg, PyObject *kw)
1210{
1211 char *kwlist[] = { "mask", 0 };
1212 poly1305key_pyobj *pk = (poly1305key_pyobj *)ty;
1213 poly1305hash_pyobj *ph;
1214 char *m = 0;
1215 int sz;
1216
1217 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|s#:new", kwlist, &m, &sz))
1218 return (0);
1219 if (m && sz != POLY1305_MASKSZ) VALERR("bad mask length");
1220 ph = PyObject_NEW(poly1305hash_pyobj, ty);
1221 ph->f = 0;
1222 if (m) ph->f |= f_mask;
1223 poly1305_macinit(&ph->ctx, &pk->k, m);
1224 Py_INCREF(ty);
1225 return ((PyObject *)ph);
1226end:
1227 return (0);
1228}
1229
1230static PyObject *poly1305key_pynew(PyTypeObject *ty,
1231 PyObject *arg, PyObject *kw)
1232{
1233 char *kwlist[] = { "k", 0 };
1234 poly1305key_pyobj *pk;
1235 char *k;
1236 int sz;
1237
1238 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
1239 goto end;
1240 if (keysz(sz, poly1305_keysz) != sz) VALERR("bad key length");
1241
1242 pk = newtype(ty, 0, 0);
1243 pk->ty.ht_name = PyString_FromString("poly1305(keyed)");
1244 pk->ty.ht_type.tp_basicsize = sizeof(poly1305hash_pyobj);
1245 pk->ty.ht_type.tp_name = PyString_AS_STRING(pk->ty.ht_name);
1246 pk->ty.ht_type.tp_base = poly1305hash_pytype;
1247 Py_INCREF(poly1305key_pytype);
1248 pk->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1249 Py_TPFLAGS_BASETYPE |
1250 Py_TPFLAGS_HEAPTYPE);
1251 pk->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1252 pk->ty.ht_type.tp_free = 0;
1253 pk->ty.ht_type.tp_new = poly1305hash_pynew;
1254 typeready(&pk->ty.ht_type);
1255
1256 poly1305_keyinit(&pk->k, k, sz);
1257 return ((PyObject *)pk);
1258
1259end:
1260 return (0);
1261}
1262
1263static PyObject *poly1305clsget_name(PyObject *me, void *hunoz)
1264 { return (PyString_FromString("poly1305")); }
1265
1266static PyObject *poly1305clsget_keysz(PyObject *me, void *hunoz)
1267 { return (keysz_pywrap(poly1305_keysz)); }
1268
1269static PyObject *poly1305clsget_masksz(PyObject *me, void *hunoz)
1270 { return (PyInt_FromLong(POLY1305_MASKSZ)); }
1271
1272static PyObject *poly1305clsget_tagsz(PyObject *me, void *hunoz)
1273 { return (PyInt_FromLong(POLY1305_TAGSZ)); }
1274
1275static PyObject *polymeth_copy(PyObject *me, PyObject *arg)
1276{
1277 poly1305hash_pyobj *ph;
1278 if (!PyArg_ParseTuple(arg, ":copy")) return (0);
1279 ph = PyObject_NEW(poly1305hash_pyobj, me->ob_type);
1280 poly1305_copy(&ph->ctx, P1305_CTX(me));
1281 Py_INCREF(me->ob_type);
1282 return ((PyObject *)ph);
1283}
1284
1285static PyObject *polymeth_hash(PyObject *me, PyObject *arg)
1286{
1287 char *p;
1288 int sz;
1289 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
1290 poly1305_hash(P1305_CTX(me), p, sz);
1291 RETURN_ME;
1292}
1293
1294#define POLYMETH_HASHU_(n, W, w) \
1295 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
1296 { \
1297 uint##n x; \
1298 octet b[SZ_##W]; \
1299 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
1300 STORE##W(b, n); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
1301 RETURN_ME; \
1302 end: \
1303 return (0); \
1304 }
1305DOUINTCONV(POLYMETH_HASHU_)
1306
1307#define POLYMETH_HASHBUF_(n, W, w) \
1308 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
1309 { \
1310 char *p; \
1311 int sz; \
1312 octet b[SZ_##W]; \
1313 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1314 if (sz > MASK##n) TYERR("string too long"); \
1315 STORE##W(b, n); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
1316 poly1305_hash(P1305_CTX(me), p, sz); \
1317 RETURN_ME; \
1318 end: \
1319 return (0); \
1320 }
1321DOUINTCONV(POLYMETH_HASHBUF_)
1322
1323static PyObject *polymeth_hashstrz(PyObject *me, PyObject *arg)
1324{
1325 char *p;
1326 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
1327 poly1305_hash(P1305_CTX(me), p, strlen(p) + 1);
1328 RETURN_ME;
1329}
1330
1331static PyObject *polymeth_flush(PyObject *me, PyObject *arg)
1332{
1333 if (!PyArg_ParseTuple(arg, ":flush")) return (0);
1334 poly1305_flush(P1305_CTX(me));
1335 RETURN_ME;
1336}
1337
1338static PyObject *polymeth_concat(PyObject *me, PyObject *arg)
1339{
1340 PyObject *pre, *suff;
1341 if (!PyArg_ParseTuple(arg, "OO:concat", &pre, &suff)) return (0);
1342 if (!PyObject_TypeCheck(pre, poly1305hash_pytype) ||
1343 !PyObject_TypeCheck(suff, poly1305hash_pytype))
1344 TYERR("wanted a poly1305hash");
1345 if (me->ob_type != pre->ob_type || me->ob_type != suff->ob_type)
1346 TYERR("key mismatch");
1347 if (P1305_CTX(pre)->nbuf) VALERR("prefix is not block-aligned");
1348 poly1305_concat(P1305_CTX(me), P1305_CTX(pre), P1305_CTX(suff));
1349 RETURN_ME;
1350end:
1351 return (0);
1352}
1353
1354static PyObject *polymeth_done(PyObject *me, PyObject *arg)
1355{
1356 PyObject *rc;
1357 if (!PyArg_ParseTuple(arg, ":done")) return (0);
1358 if (!(P1305_F(me) & f_mask)) VALERR("no mask");
1359 rc = bytestring_pywrap(0, POLY1305_TAGSZ);
1360 poly1305_done(P1305_CTX(me), PyString_AS_STRING(rc));
1361 return (rc);
1362end:
1363 return (0);
1364}
1365
1366static PyGetSetDef poly1305cls_pygetset[] = {
1367#define GETSETNAME(op, name) poly1305cls##op##_##name
1368 GET (keysz, "PC.keysz -> acceptable key sizes")
1369 GET (masksz, "PC.masksz -> mask size")
1370 GET (tagsz, "PC.tagsz -> MAC output size")
1371 GET (name, "PC.name -> name of this kind of MAC")
1372#undef GETSETNAME
1373 { 0 }
1374};
1375
1376static PyMethodDef poly1305hash_pymethods[] = {
1377#define METHNAME(name) polymeth_##name
1378 METH (copy, "P.copy() -> PP")
1379 METH (hash, "P.hash(M)")
1380#define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
1381 DOUINTCONV(METHU_)
1382#undef METHU_
1383#define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
1384 DOUINTCONV(METHBUF_)
1385#undef METHBUF_
1386 METH (hashstrz, "P.hashstrz(STRING)")
1387 METH (flush, "P.flush()")
1388 METH (concat, "P.concat(PREFIX, SUFFIX)")
1389 METH (done, "P.done() -> TAG")
1390#undef METHNAME
1391 { 0 }
1392};
1393
1394static PyTypeObject poly1305cls_pytype_skel = {
1395 PyObject_HEAD_INIT(0) 0, /* Header */
1396 "Poly1305Class", /* @tp_name@ */
1397 sizeof(PyHeapTypeObject), /* @tp_basicsize@ */
1398 0, /* @tp_itemsize@ */
1399
1400 0, /* @tp_dealloc@ */
1401 0, /* @tp_print@ */
1402 0, /* @tp_getattr@ */
1403 0, /* @tp_setattr@ */
1404 0, /* @tp_compare@ */
1405 0, /* @tp_repr@ */
1406 0, /* @tp_as_number@ */
1407 0, /* @tp_as_sequence@ */
1408 0, /* @tp_as_mapping@ */
1409 0, /* @tp_hash@ */
1410 0, /* @tp_call@ */
1411 0, /* @tp_str@ */
1412 0, /* @tp_getattro@ */
1413 0, /* @tp_setattro@ */
1414 0, /* @tp_as_buffer@ */
1415 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1416 Py_TPFLAGS_BASETYPE,
1417
1418 /* @tp_doc@ */
1419"Poly1305 metametaclass. Best not to ask.",
1420
1421 0, /* @tp_traverse@ */
1422 0, /* @tp_clear@ */
1423 0, /* @tp_richcompare@ */
1424 0, /* @tp_weaklistoffset@ */
1425 0, /* @tp_iter@ */
1426 0, /* @tp_iternext@ */
1427 0, /* @tp_methods@ */
1428 0, /* @tp_members@ */
1429 poly1305cls_pygetset, /* @tp_getset@ */
1430 0, /* @tp_base@ */
1431 0, /* @tp_dict@ */
1432 0, /* @tp_descr_get@ */
1433 0, /* @tp_descr_set@ */
1434 0, /* @tp_dictoffset@ */
1435 0, /* @tp_init@ */
1436 PyType_GenericAlloc, /* @tp_alloc@ */
1437 abstract_pynew, /* @tp_new@ */
1438 0, /* @tp_free@ */
1439 0 /* @tp_is_gc@ */
1440};
1441
1442static PyTypeObject poly1305key_pytype_skel = {
1443 PyObject_HEAD_INIT(0) 0, /* Header */
1444 "poly1305", /* @tp_name@ */
1445 sizeof(poly1305key_pyobj), /* @tp_basicsize@ */
1446 0, /* @tp_itemsize@ */
1447
1448 0, /* @tp_dealloc@ */
1449 0, /* @tp_print@ */
1450 0, /* @tp_getattr@ */
1451 0, /* @tp_setattr@ */
1452 0, /* @tp_compare@ */
1453 0, /* @tp_repr@ */
1454 0, /* @tp_as_number@ */
1455 0, /* @tp_as_sequence@ */
1456 0, /* @tp_as_mapping@ */
1457 0, /* @tp_hash@ */
1458 0, /* @tp_call@ */
1459 0, /* @tp_str@ */
1460 0, /* @tp_getattro@ */
1461 0, /* @tp_setattro@ */
1462 0, /* @tp_as_buffer@ */
1463 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1464 Py_TPFLAGS_BASETYPE,
1465
1466 /* @tp_doc@ */
1467"Poly1305 key.",
1468
1469 0, /* @tp_traverse@ */
1470 0, /* @tp_clear@ */
1471 0, /* @tp_richcompare@ */
1472 0, /* @tp_weaklistoffset@ */
1473 0, /* @tp_iter@ */
1474 0, /* @tp_iternext@ */
1475 0, /* @tp_methods@ */
1476 0, /* @tp_members@ */
1477 0, /* @tp_getset@ */
1478 0, /* @tp_base@ */
1479 0, /* @tp_dict@ */
1480 0, /* @tp_descr_get@ */
1481 0, /* @tp_descr_set@ */
1482 0, /* @tp_dictoffset@ */
1483 0, /* @tp_init@ */
1484 PyType_GenericAlloc, /* @tp_alloc@ */
1485 poly1305key_pynew, /* @tp_new@ */
1486 0, /* @tp_free@ */
1487 0 /* @tp_is_gc@ */
1488};
1489
1490static PyTypeObject poly1305hash_pytype_skel = {
1491 PyObject_HEAD_INIT(0) 0, /* Header */
1492 "Poly1305Hash", /* @tp_name@ */
1493 sizeof(poly1305hash_pyobj), /* @tp_basicsize@ */
1494 0, /* @tp_itemsize@ */
1495
1496 0, /* @tp_dealloc@ */
1497 0, /* @tp_print@ */
1498 0, /* @tp_getattr@ */
1499 0, /* @tp_setattr@ */
1500 0, /* @tp_compare@ */
1501 0, /* @tp_repr@ */
1502 0, /* @tp_as_number@ */
1503 0, /* @tp_as_sequence@ */
1504 0, /* @tp_as_mapping@ */
1505 0, /* @tp_hash@ */
1506 0, /* @tp_call@ */
1507 0, /* @tp_str@ */
1508 0, /* @tp_getattro@ */
1509 0, /* @tp_setattro@ */
1510 0, /* @tp_as_buffer@ */
1511 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1512 Py_TPFLAGS_BASETYPE,
1513
1514 /* @tp_doc@ */
1515"Poly1305 MAC context base class.",
1516
1517 0, /* @tp_traverse@ */
1518 0, /* @tp_clear@ */
1519 0, /* @tp_richcompare@ */
1520 0, /* @tp_weaklistoffset@ */
1521 0, /* @tp_iter@ */
1522 0, /* @tp_iternext@ */
1523 poly1305hash_pymethods, /* @tp_methods@ */
1524 0, /* @tp_members@ */
1525 0, /* @tp_getset@ */
1526 0, /* @tp_base@ */
1527 0, /* @tp_dict@ */
1528 0, /* @tp_descr_get@ */
1529 0, /* @tp_descr_set@ */
1530 0, /* @tp_dictoffset@ */
1531 0, /* @tp_init@ */
1532 PyType_GenericAlloc, /* @tp_alloc@ */
1533 abstract_pynew, /* @tp_new@ */
1534 0, /* @tp_free@ */
1535 0 /* @tp_is_gc@ */
1536};
1537
a75e68c9
MW		 1538/*----- Special snowflake for HSalsa and HChaCha --------------------------*/
1539
1540#define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
1541 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
1542 { \
1543 dance##_ctx dance; \
1544 char *k, *n; \
1545 int ksz, nsz; \
1546 PyObject *rc; \
1547 if (!PyArg_ParseTuple(arg, "s#s#:" #hdance "_prf", \
1548 &k, &ksz, &n, &nsz)) \
1549 goto end; \
1550 if (ksz != DANCE##_KEYSZ) VALERR("bad key length"); \
1551 if (nsz != HDANCE##_INSZ) VALERR("bad input length"); \
1552 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
1553 dance##_init(&dance, k, ksz, 0); \
1554 hdance##_prf(&dance, n, PyString_AS_STRING(rc)); \
1555 return (rc); \
1556 end: \
1557 return (0); \
1558 }
1559
1560DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa20)
1561DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa2012)
1562DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa208)
1563
1564DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha20)
1565DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha12)
1566DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha8)
204d480b 1567
03ed9abb
MW		 1568/*----- Pseudorandom permutations -----------------------------------------*/
1569
1570static PyTypeObject *gcprp_pytype, *gprp_pytype;
1571
1572typedef struct prpinfo {
1573 const char *name;
1574 const octet *keysz;
1575 size_t ctxsz;
1576 size_t blksz;
1577 void (*init)(void *, const void *, size_t);
1578 void (*eblk)(void *, const void *, void *);
1579 void (*dblk)(void *, const void *, void *);
1580} prpinfo;
1581
1582#define PRP_DEF(PRE, pre) \
1583 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
1584 { pre##_init(ctx, k, ksz); } \
1585 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
1586 { \
1587 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
1588 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
1589 } \
1590 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
1591 { \
1592 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
1593 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
1594 } \
1595 static const prpinfo pre##_prpinfo = { \
1596 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
1597 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
1598 };
1599PRPS(PRP_DEF)
1600
1601static const struct prpinfo *const gprptab[] = {
1602#define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
1603 PRPS(PRP_ENTRY)
1604 0
b2687a0a 1605};
03ed9abb
MW		 1606
1607typedef struct gcprp_pyobj {
1608 PyHeapTypeObject ty;
1609 const prpinfo *prp;
1610} gcprp_pyobj;
1611#define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
1612
1613typedef struct gprp_pyobj {
1614 PyObject_HEAD
1615 const prpinfo *prp;
1616} gprp_pyobj;
1617#define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
1618#define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
1619
1620typedef struct prp {
1621 const prpinfo *prp;
1622 void *ctx;
1623} prp;
1624
1625static PyObject *gprp_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1626{
1627 char *kwlist[] = { "key", 0 };
1628 char *k;
1629 int sz;
1630 const prpinfo *prp = GCPRP_PRP(ty);
1631 PyObject *me;
1632
1633 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
1634 goto end;
1635 if (keysz(sz, prp->keysz) != sz) VALERR("bad key length");
1636 me = (PyObject *)ty->tp_alloc(ty, 0);
1637 GPRP_PRP(me) = prp;
1638 prp->init(GPRP_CTX(me), k, sz);
1639 Py_INCREF(me);
1640 return (me);
1641end:
b2687a0a 1642 return (0);
03ed9abb
MW		 1643}
1644
1645static void gprp_pydealloc(PyObject *me)
1646 { Py_DECREF(me->ob_type); FREEOBJ(me); }
1647
1648static PyObject *gcprp_pywrap(const prpinfo *prp)
1649{
1650 gcprp_pyobj *g = newtype(gcprp_pytype, 0, prp->name);
1651 g->prp = prp;
24b3d57b
MW		 1652 g->ty.ht_type.tp_basicsize = sizeof(gprp_pyobj) + prp->ctxsz;
1653 g->ty.ht_type.tp_base = gprp_pytype;
03ed9abb 1654 Py_INCREF(gprp_pytype);
24b3d57b
MW		 1655 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1656 Py_TPFLAGS_BASETYPE |
1657 Py_TPFLAGS_HEAPTYPE);
1658 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1659 g->ty.ht_type.tp_free = 0;
1660 g->ty.ht_type.tp_new = gprp_pynew;
dc075750 1661 typeready(&g->ty.ht_type);
03ed9abb
MW		 1662 return ((PyObject *)g);
1663}
1664
1665static PyObject *gcpget_name(PyObject *me, void *hunoz)
1666 { return (PyString_FromString(GCPRP_PRP(me)->name)); }
1667static PyObject *gcpget_keysz(PyObject *me, void *hunoz)
1668 { return (keysz_pywrap(GCPRP_PRP(me)->keysz)); }
1669static PyObject *gcpget_blksz(PyObject *me, void *hunoz)
1670 { return (PyInt_FromLong(GCPRP_PRP(me)->blksz)); }
1671
1672static PyObject *gpmeth_encrypt(PyObject *me, PyObject *arg)
1673{
1674 char *p;
1675 int n;
1676 PyObject *rc = 0;
1677
1678 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &n)) goto end;
1679 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
1680 rc = bytestring_pywrap(0, n);
1681 GPRP_PRP(me)->eblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
1682end:
1683 return (rc);
1684}
1685
1686static PyObject *gpmeth_decrypt(PyObject *me, PyObject *arg)
1687{
1688 char *p;
1689 int n;
1690 PyObject *rc = 0;
1691
1692 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &n)) goto end;
1693 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
1694 rc = bytestring_pywrap(0, n);
1695 GPRP_PRP(me)->dblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
1696end:
1697 return (rc);
1698}
1699
1700static PyGetSetDef gcprp_pygetset[] = {
1701#define GETSETNAME(op, name) gcp##op##_##name
1702 GET (keysz, "CP.keysz -> acceptable key sizes")
1703 GET (blksz, "CP.blksz -> block size")
1704 GET (name, "CP.name -> name of this kind of PRP")
1705#undef GETSETNAME
1706 { 0 }
1707};
1708
1709static PyMethodDef gprp_pymethods[] = {
1710#define METHNAME(name) gpmeth_##name
1711 METH (encrypt, "P.encrypt(PT) -> CT")
1712 METH (decrypt, "P.decrypt(CT) -> PT")
1713#undef METHNAME
1714 { 0 }
1715};
1716
1717static PyTypeObject gcprp_pytype_skel = {
1718 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1719 "GCPRP", /* @tp_name@ */
03ed9abb
MW		 1720 sizeof(gcprp_pyobj), /* @tp_basicsize@ */
1721 0, /* @tp_itemsize@ */
1722
1723 0, /* @tp_dealloc@ */
1724 0, /* @tp_print@ */
1725 0, /* @tp_getattr@ */
1726 0, /* @tp_setattr@ */
1727 0, /* @tp_compare@ */
1728 0, /* @tp_repr@ */
1729 0, /* @tp_as_number@ */
1730 0, /* @tp_as_sequence@ */
1731 0, /* @tp_as_mapping@ */
1732 0, /* @tp_hash@ */
1733 0, /* @tp_call@ */
1734 0, /* @tp_str@ */
1735 0, /* @tp_getattro@ */
1736 0, /* @tp_setattro@ */
1737 0, /* @tp_as_buffer@ */
1738 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1739 Py_TPFLAGS_BASETYPE,
1740
1741 /* @tp_doc@ */
1742"Pseudorandom permutation metaclass.",
1743
1744 0, /* @tp_traverse@ */
1745 0, /* @tp_clear@ */
1746 0, /* @tp_richcompare@ */
1747 0, /* @tp_weaklistoffset@ */
1748 0, /* @tp_iter@ */
1749 0, /* @tp_iternext@ */
1750 0, /* @tp_methods@ */
1751 0, /* @tp_members@ */
1752 gcprp_pygetset, /* @tp_getset@ */
1753 0, /* @tp_base@ */
1754 0, /* @tp_dict@ */
1755 0, /* @tp_descr_get@ */
1756 0, /* @tp_descr_set@ */
1757 0, /* @tp_dictoffset@ */
1758 0, /* @tp_init@ */
1759 PyType_GenericAlloc, /* @tp_alloc@ */
1760 abstract_pynew, /* @tp_new@ */
1761 0, /* @tp_free@ */
1762 0 /* @tp_is_gc@ */
1763};
1764
1765static PyTypeObject gprp_pytype_skel = {
1766 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1767 "GPRP", /* @tp_name@ */
03ed9abb
MW		 1768 sizeof(gprp_pyobj), /* @tp_basicsize@ */
1769 0, /* @tp_itemsize@ */
1770
1771 gprp_pydealloc, /* @tp_dealloc@ */
1772 0, /* @tp_print@ */
1773 0, /* @tp_getattr@ */
1774 0, /* @tp_setattr@ */
1775 0, /* @tp_compare@ */
1776 0, /* @tp_repr@ */
1777 0, /* @tp_as_number@ */
1778 0, /* @tp_as_sequence@ */
1779 0, /* @tp_as_mapping@ */
1780 0, /* @tp_hash@ */
1781 0, /* @tp_call@ */
1782 0, /* @tp_str@ */
1783 0, /* @tp_getattro@ */
1784 0, /* @tp_setattro@ */
1785 0, /* @tp_as_buffer@ */
1786 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1787 Py_TPFLAGS_BASETYPE,
1788
1789 /* @tp_doc@ */
1790"Pseudorandom permutation, abstract base class.",
1791
1792 0, /* @tp_traverse@ */
1793 0, /* @tp_clear@ */
1794 0, /* @tp_richcompare@ */
1795 0, /* @tp_weaklistoffset@ */
1796 0, /* @tp_iter@ */
1797 0, /* @tp_iternext@ */
1798 gprp_pymethods, /* @tp_methods@ */
1799 0, /* @tp_members@ */
1800 0, /* @tp_getset@ */
1801 0, /* @tp_base@ */
1802 0, /* @tp_dict@ */
1803 0, /* @tp_descr_get@ */
1804 0, /* @tp_descr_set@ */
1805 0, /* @tp_dictoffset@ */
1806 0, /* @tp_init@ */
1807 PyType_GenericAlloc, /* @tp_alloc@ */
1808 abstract_pynew, /* @tp_new@ */
1809 0, /* @tp_free@ */
1810 0 /* @tp_is_gc@ */
1811};
1812
d7ab1bab 1813/*----- Main code ---------------------------------------------------------*/
1814
89157adc
MW		 1815static PyMethodDef methods[] = {
1816#define METHNAME(func) meth_##func
1817 METH (_KeySZ_fromdl, "\
1818fromdl(N) -> M: convert integer discrete log field size to work factor")
1819 METH (_KeySZ_fromschnorr, "\
1820fromschnorr(N) -> M: convert Schnorr group order to work factor")
1821 METH (_KeySZ_fromif, "\
1822fromif(N) -> M: convert integer factorization problem size to work factor")
1823 METH (_KeySZ_fromec, "\
1824fromec(N) -> M: convert elliptic curve group order to work factor")
1825 METH (_KeySZ_todl, "\
1826todl(N) -> M: convert work factor to integer discrete log field size")
1827 METH (_KeySZ_toschnorr, "\
1828toschnorr(N) -> M: convert work factor to Schnorr group order")
1829 METH (_KeySZ_toif, "\
1830toif(N) -> M: convert work factor to integer factorization problem size")
1831 METH (_KeySZ_toec, "\
1832toec(N) -> M: convert work factor to elliptic curve group order")
a75e68c9
MW		 1833 METH (_KeySZ_toec, "\
1834toec(N) -> M: convert work factor to elliptic curve group order")
1835#define METH_HDANCE(hdance, HDance) METH(hdance##_prf, "\
1836" #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
1837 METH_HDANCE(hsalsa20, "HSalsa20")
1838 METH_HDANCE(hsalsa2012, "HSalsa20/12")
1839 METH_HDANCE(hsalsa208, "HSalsa20/8")
1840 METH_HDANCE(hchacha20, "HChaCha20")
1841 METH_HDANCE(hchacha12, "HChaCha12")
1842 METH_HDANCE(hchacha8, "HChaCha8")
1843#undef METH_DANCE
89157adc
MW		 1844#undef METHNAME
1845 { 0 }
1846};
1847
d7ab1bab 1848void algorithms_pyinit(void)
1849{
1850 INITTYPE(keysz, root);
1851 INITTYPE(keyszany, keysz);
1852 INITTYPE(keyszrange, keysz);
1853 INITTYPE(keyszset, keysz);
1854 INITTYPE(gccipher, type);
1855 INITTYPE(gcipher, root);
1856 INITTYPE(gchash, type);
1857 INITTYPE(ghash, root);
1858 INITTYPE(gcmac, type);
1859 INITTYPE(gmac, type);
1860 INITTYPE(gmhash, ghash);
204d480b
MW		 1861 INITTYPE(poly1305cls, type);
1862 INITTYPE_META(poly1305key, type, poly1305cls);
1863 INITTYPE(poly1305hash, root);
03ed9abb
MW		 1864 INITTYPE(gcprp, type);
1865 INITTYPE(gprp, root);
89157adc 1866 addmethods(methods);
d7ab1bab 1867}
1868
d7ab1bab 1869GEN(gcciphers, cipher)
1870GEN(gchashes, hash)
1871GEN(gcmacs, mac)
03ed9abb
MW		 1872#define gcprp prpinfo
1873GEN(gcprps, prp)
d7ab1bab 1874
1875void algorithms_pyinsert(PyObject *mod)
1876{
1877 PyObject *d;
1878 INSERT("KeySZ", keysz_pytype);
1879 INSERT("KeySZAny", keyszany_pytype);
1880 INSERT("KeySZRange", keyszrange_pytype);
1881 INSERT("KeySZSet", keyszset_pytype);
1882 INSERT("GCCipher", gccipher_pytype);
1883 INSERT("GCipher", gcipher_pytype);
1884 INSERT("gcciphers", gcciphers());
1885 INSERT("GCHash", gchash_pytype);
1886 INSERT("GHash", ghash_pytype);
1887 INSERT("gchashes", d = gchashes());
1888 sha_pyobj = PyDict_GetItemString(d, "sha"); Py_INCREF(sha_pyobj);
1889 has160_pyobj = PyDict_GetItemString(d, "has160"); Py_INCREF(has160_pyobj);
1890 INSERT("GCMAC", gcmac_pytype);
1891 INSERT("GMAC", gmac_pytype);
1892 INSERT("GMACHash", gmhash_pytype);
1893 INSERT("gcmacs", gcmacs());
204d480b
MW		 1894 INSERT("Poly1305Class", poly1305cls_pytype);
1895 INSERT("poly1305", poly1305key_pytype);
1896 INSERT("Poly1305Hash", poly1305hash_pytype);
03ed9abb
MW		 1897 INSERT("GCPRP", gcprp_pytype);
1898 INSERT("GPRP", gprp_pytype);
1899 INSERT("gcprps", gcprps());
d7ab1bab 1900}
1901
1902/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings