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catacomb-python.h: Don't inhibit 64-bit type detection any more.
[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
775static PyObject *ghmeth_done(PyObject *me, PyObject *arg)
776{
777 ghash *g;
778 PyObject *rc;
779 if (!PyArg_ParseTuple(arg, ":done")) return (0);
780 g = GH_COPY(GHASH_H(me));
781 rc = bytestring_pywrap(0, g->ops->c->hashsz);
782 GH_DONE(g, PyString_AS_STRING(rc));
783 GH_DESTROY(g);
784 return (rc);
785}
786
787static PyGetSetDef gchash_pygetset[] = {
788#define GETSETNAME(op, name) gch##op##_##name
789 GET (bufsz, "CH.bufsz -> hash buffer size, or zero")
790 GET (hashsz, "CH.blksz -> hash output size")
791 GET (name, "CH.name -> name of this kind of hash")
792#undef GETSETNAME
793 { 0 }
794};
795
46e6ad89 796#define GHMETH_HASHU_(n, W, w) \
797 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
798 { \
799 uint##n x; \
800 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
801 GH_HASHU##W(GHASH_H(me), x); \
802 RETURN_ME; \
803 end: \
804 return (0); \
805 }
806DOUINTCONV(GHMETH_HASHU_)
807
808#define GHMETH_HASHBUF_(n, W, w) \
809 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
810 { \
811 char *p; \
812 int sz; \
813 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
814 if (sz > MASK##n) TYERR("string too long"); \
815 GH_HASHBUF##W(GHASH_H(me), p, sz); \
816 RETURN_ME; \
817 end: \
818 return (0); \
819 }
820DOUINTCONV(GHMETH_HASHBUF_)
821
822static PyObject *ghmeth_hashstrz(PyObject *me, PyObject *arg)
823{
824 char *p;
825 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
826 GH_HASHSTRZ(GHASH_H(me), p);
827 RETURN_ME;
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_)
835#define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
836 DOUINTCONV(METHBUF_)
837 METH (hashstrz, "H.hashstrz(STRING)")
d7ab1bab 838 METH (done, "H.done() -> HASH")
839#undef METHNAME
840 { 0 }
841};
842
843static PyTypeObject gchash_pytype_skel = {
6d4db0bf 844 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 845 "GCHash", /* @tp_name@ */
d7ab1bab 846 sizeof(gchash_pyobj), /* @tp_basicsize@ */
847 0, /* @tp_itemsize@ */
848
849 0, /* @tp_dealloc@ */
850 0, /* @tp_print@ */
851 0, /* @tp_getattr@ */
852 0, /* @tp_setattr@ */
853 0, /* @tp_compare@ */
854 0, /* @tp_repr@ */
855 0, /* @tp_as_number@ */
856 0, /* @tp_as_sequence@ */
857 0, /* @tp_as_mapping@ */
858 0, /* @tp_hash@ */
859 0, /* @tp_call@ */
860 0, /* @tp_str@ */
861 0, /* @tp_getattro@ */
862 0, /* @tp_setattro@ */
863 0, /* @tp_as_buffer@ */
864 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
865 Py_TPFLAGS_BASETYPE,
866
867 /* @tp_doc@ */
868"Hash function metaclass.",
869
870 0, /* @tp_traverse@ */
871 0, /* @tp_clear@ */
872 0, /* @tp_richcompare@ */
873 0, /* @tp_weaklistoffset@ */
874 0, /* @tp_iter@ */
963a6148 875 0, /* @tp_iternext@ */
d7ab1bab 876 0, /* @tp_methods@ */
877 0, /* @tp_members@ */
878 gchash_pygetset, /* @tp_getset@ */
879 0, /* @tp_base@ */
880 0, /* @tp_dict@ */
881 0, /* @tp_descr_get@ */
882 0, /* @tp_descr_set@ */
883 0, /* @tp_dictoffset@ */
884 0, /* @tp_init@ */
885 PyType_GenericAlloc, /* @tp_alloc@ */
886 abstract_pynew, /* @tp_new@ */
3aa33042 887 0, /* @tp_free@ */
d7ab1bab 888 0 /* @tp_is_gc@ */
889};
890
891static PyTypeObject ghash_pytype_skel = {
6d4db0bf 892 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 893 "GHash", /* @tp_name@ */
d7ab1bab 894 sizeof(ghash_pyobj), /* @tp_basicsize@ */
895 0, /* @tp_itemsize@ */
896
897 ghash_pydealloc, /* @tp_dealloc@ */
898 0, /* @tp_print@ */
899 0, /* @tp_getattr@ */
900 0, /* @tp_setattr@ */
901 0, /* @tp_compare@ */
902 0, /* @tp_repr@ */
903 0, /* @tp_as_number@ */
904 0, /* @tp_as_sequence@ */
905 0, /* @tp_as_mapping@ */
906 0, /* @tp_hash@ */
907 0, /* @tp_call@ */
908 0, /* @tp_str@ */
909 0, /* @tp_getattro@ */
910 0, /* @tp_setattro@ */
911 0, /* @tp_as_buffer@ */
912 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
913 Py_TPFLAGS_BASETYPE,
914
915 /* @tp_doc@ */
916"Hash function, abstract base class.",
917
918 0, /* @tp_traverse@ */
919 0, /* @tp_clear@ */
920 0, /* @tp_richcompare@ */
921 0, /* @tp_weaklistoffset@ */
922 0, /* @tp_iter@ */
963a6148 923 0, /* @tp_iternext@ */
d7ab1bab 924 ghash_pymethods, /* @tp_methods@ */
925 0, /* @tp_members@ */
926 0, /* @tp_getset@ */
927 0, /* @tp_base@ */
928 0, /* @tp_dict@ */
929 0, /* @tp_descr_get@ */
930 0, /* @tp_descr_set@ */
931 0, /* @tp_dictoffset@ */
932 0, /* @tp_init@ */
933 PyType_GenericAlloc, /* @tp_alloc@ */
934 abstract_pynew, /* @tp_new@ */
3aa33042 935 0, /* @tp_free@ */
d7ab1bab 936 0 /* @tp_is_gc@ */
937};
938
939/*----- Message authentication --------------------------------------------*/
940
941PyTypeObject *gcmac_pytype, *gmac_pytype, *gmhash_pytype;
942
943CONVFUNC(gcmac, gcmac *, GCMAC_CM)
944CONVFUNC(gmac, gmac *, GMAC_M)
945CONVFUNC(gmhash, ghash *, GHASH_H)
946
947static PyObject *gmac_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
948{
949 char *kwlist[] = { "k", 0 };
950 char *k;
951 int sz;
952
953 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
954 goto end;
955 if (keysz(sz, GCMAC_CM(ty)->keysz) != sz) VALERR("bad key length");
956 return (gmac_pywrap((PyObject *)ty,
957 GM_KEY(GCMAC_CM(ty), k, sz),
958 f_freeme));
959end:
b2687a0a 960 return (0);
d7ab1bab 961}
962
963static PyObject *gmhash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
964{
965 char *kwlist[] = { 0 };
966 ghash_pyobj *g;
967
968 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist)) return (0);
969 g = PyObject_NEW(ghash_pyobj, ty);
970 g->h = GM_INIT(GMAC_M(ty));
971 g->f = f_freeme;
972 Py_INCREF(ty);
973 return ((PyObject *)g);
974}
975
976PyObject *gcmac_pywrap(gcmac *cm)
977{
df9f8366 978 gcmac_pyobj *g = newtype(gcmac_pytype, 0, cm->name);
d7ab1bab 979 g->cm = cm;
24b3d57b
MW		 980 g->ty.ht_type.tp_basicsize = sizeof(gmac_pyobj);
981 g->ty.ht_type.tp_base = gmac_pytype;
d7ab1bab 982 Py_INCREF(gmac_pytype);
24b3d57b
MW		 983 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
984 Py_TPFLAGS_BASETYPE |
985 Py_TPFLAGS_HEAPTYPE);
986 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
987 g->ty.ht_type.tp_free = 0;
988 g->ty.ht_type.tp_new = gmac_pynew;
dc075750 989 typeready(&g->ty.ht_type);
d7ab1bab 990 return ((PyObject *)g);
991}
992
993PyObject *gmac_pywrap(PyObject *cobj, gmac *m, unsigned f)
994{
995 gmac_pyobj *g;
996 if (!cobj) cobj = gcmac_pywrap((/*unconst*/ gcmac *)GM_CLASS(m));
997 else Py_INCREF(cobj);
df9f8366 998 g = newtype((PyTypeObject *)cobj, 0, 0);
24b3d57b
MW		 999 g->ty.ht_name = PyString_FromFormat("%s(keyed)", m->ops->c->name);
1000 g->ty.ht_type.tp_name = PyString_AS_STRING(g->ty.ht_name);
1001 g->ty.ht_type.tp_base = gmhash_pytype;
d7ab1bab 1002 Py_INCREF(gmac_pytype);
24b3d57b
MW		 1003 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1004 Py_TPFLAGS_BASETYPE |
1005 Py_TPFLAGS_HEAPTYPE);
1006 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1007 g->ty.ht_type.tp_free = 0;
1008 g->ty.ht_type.tp_new = gmhash_pynew;
dc075750 1009 typeready(&g->ty.ht_type);
d7ab1bab 1010 g->m = m;
1011 g->f = f;
b2687a0a 1012 return ((PyObject *)g);
d7ab1bab 1013}
1014
1015static void gmac_pydealloc(PyObject *me)
1016{
1017 if (GMAC_F(me) & f_freeme)
1018 GM_DESTROY(GMAC_M(me));
1019 Py_DECREF(me->ob_type);
d7ab1bab 1020 PyType_Type.tp_dealloc(me);
1021}
1022
1023static PyObject *gcmget_name(PyObject *me, void *hunoz)
1024 { return (PyString_FromString(GCMAC_CM(me)->name)); }
1025
1026static PyObject *gcmget_keysz(PyObject *me, void *hunoz)
1027 { return (keysz_pywrap(GCMAC_CM(me)->keysz)); }
1028
1029static PyObject *gcmget_tagsz(PyObject *me, void *hunoz)
1030 { return (PyInt_FromLong(GCMAC_CM(me)->hashsz)); }
1031
1032static PyGetSetDef gcmac_pygetset[] = {
1033#define GETSETNAME(op, name) gcm##op##_##name
1034 GET (keysz, "CM.keysz -> acceptable key sizes")
1035 GET (tagsz, "CM.tagsz -> MAC output size")
1036 GET (name, "CM.name -> name of this kind of MAC")
1037#undef GETSETNAME
1038 { 0 }
1039};
1040
1041static PyTypeObject gcmac_pytype_skel = {
6d4db0bf 1042 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1043 "GCMAC", /* @tp_name@ */
d7ab1bab 1044 sizeof(gchash_pyobj), /* @tp_basicsize@ */
1045 0, /* @tp_itemsize@ */
1046
1047 0, /* @tp_dealloc@ */
1048 0, /* @tp_print@ */
1049 0, /* @tp_getattr@ */
1050 0, /* @tp_setattr@ */
1051 0, /* @tp_compare@ */
1052 0, /* @tp_repr@ */
1053 0, /* @tp_as_number@ */
1054 0, /* @tp_as_sequence@ */
1055 0, /* @tp_as_mapping@ */
1056 0, /* @tp_hash@ */
1057 0, /* @tp_call@ */
1058 0, /* @tp_str@ */
1059 0, /* @tp_getattro@ */
1060 0, /* @tp_setattro@ */
1061 0, /* @tp_as_buffer@ */
1062 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1063 Py_TPFLAGS_BASETYPE,
1064
1065 /* @tp_doc@ */
1066"Message authentication code metametaclass.",
1067
1068 0, /* @tp_traverse@ */
1069 0, /* @tp_clear@ */
1070 0, /* @tp_richcompare@ */
1071 0, /* @tp_weaklistoffset@ */
1072 0, /* @tp_iter@ */
963a6148 1073 0, /* @tp_iternext@ */
d7ab1bab 1074 0, /* @tp_methods@ */
1075 0, /* @tp_members@ */
1076 gcmac_pygetset, /* @tp_getset@ */
1077 0, /* @tp_base@ */
1078 0, /* @tp_dict@ */
1079 0, /* @tp_descr_get@ */
1080 0, /* @tp_descr_set@ */
1081 0, /* @tp_dictoffset@ */
1082 0, /* @tp_init@ */
1083 PyType_GenericAlloc, /* @tp_alloc@ */
1084 abstract_pynew, /* @tp_new@ */
3aa33042 1085 0, /* @tp_free@ */
d7ab1bab 1086 0 /* @tp_is_gc@ */
1087};
1088
1089static PyTypeObject gmac_pytype_skel = {
6d4db0bf 1090 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1091 "GMAC", /* @tp_name@ */
d7ab1bab 1092 sizeof(gmac_pyobj), /* @tp_basicsize@ */
1093 0, /* @tp_itemsize@ */
1094
1095 gmac_pydealloc, /* @tp_dealloc@ */
1096 0, /* @tp_print@ */
1097 0, /* @tp_getattr@ */
1098 0, /* @tp_setattr@ */
1099 0, /* @tp_compare@ */
1100 0, /* @tp_repr@ */
1101 0, /* @tp_as_number@ */
1102 0, /* @tp_as_sequence@ */
1103 0, /* @tp_as_mapping@ */
1104 0, /* @tp_hash@ */
1105 0, /* @tp_call@ */
1106 0, /* @tp_str@ */
1107 0, /* @tp_getattro@ */
1108 0, /* @tp_setattro@ */
1109 0, /* @tp_as_buffer@ */
1110 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1111 Py_TPFLAGS_BASETYPE,
1112
1113 /* @tp_doc@ */
1114"Message authentication code metaclass, abstract base class.",
1115
1116 0, /* @tp_traverse@ */
1117 0, /* @tp_clear@ */
1118 0, /* @tp_richcompare@ */
1119 0, /* @tp_weaklistoffset@ */
1120 0, /* @tp_iter@ */
963a6148 1121 0, /* @tp_iternext@ */
d7ab1bab 1122 0, /* @tp_methods@ */
1123 0, /* @tp_members@ */
1124 0, /* @tp_getset@ */
1125 0, /* @tp_base@ */
1126 0, /* @tp_dict@ */
1127 0, /* @tp_descr_get@ */
1128 0, /* @tp_descr_set@ */
1129 0, /* @tp_dictoffset@ */
1130 0, /* @tp_init@ */
1131 PyType_GenericAlloc, /* @tp_alloc@ */
1132 abstract_pynew, /* @tp_new@ */
3aa33042 1133 0, /* @tp_free@ */
d7ab1bab 1134 0 /* @tp_is_gc@ */
1135};
1136
1137static PyTypeObject gmhash_pytype_skel = {
6d4db0bf 1138 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1139 "GMACHash", /* @tp_name@ */
d7ab1bab 1140 sizeof(ghash_pyobj), /* @tp_basicsize@ */
1141 0, /* @tp_itemsize@ */
1142
1143 ghash_pydealloc, /* @tp_dealloc@ */
1144 0, /* @tp_print@ */
1145 0, /* @tp_getattr@ */
1146 0, /* @tp_setattr@ */
1147 0, /* @tp_compare@ */
1148 0, /* @tp_repr@ */
1149 0, /* @tp_as_number@ */
1150 0, /* @tp_as_sequence@ */
1151 0, /* @tp_as_mapping@ */
1152 0, /* @tp_hash@ */
1153 0, /* @tp_call@ */
1154 0, /* @tp_str@ */
1155 0, /* @tp_getattro@ */
1156 0, /* @tp_setattro@ */
1157 0, /* @tp_as_buffer@ */
1158 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1159 Py_TPFLAGS_BASETYPE,
1160
1161 /* @tp_doc@ */
1162"Message authentication code, abstract base class.",
1163
1164 0, /* @tp_traverse@ */
1165 0, /* @tp_clear@ */
1166 0, /* @tp_richcompare@ */
1167 0, /* @tp_weaklistoffset@ */
1168 0, /* @tp_iter@ */
963a6148 1169 0, /* @tp_iternext@ */
d7ab1bab 1170 0, /* @tp_methods@ */
1171 0, /* @tp_members@ */
1172 0, /* @tp_getset@ */
1173 0, /* @tp_base@ */
1174 0, /* @tp_dict@ */
1175 0, /* @tp_descr_get@ */
1176 0, /* @tp_descr_set@ */
1177 0, /* @tp_dictoffset@ */
1178 0, /* @tp_init@ */
1179 PyType_GenericAlloc, /* @tp_alloc@ */
1180 abstract_pynew, /* @tp_new@ */
3aa33042 1181 0, /* @tp_free@ */
d7ab1bab 1182 0 /* @tp_is_gc@ */
1183};
1184
03ed9abb
MW		 1185/*----- Pseudorandom permutations -----------------------------------------*/
1186
1187static PyTypeObject *gcprp_pytype, *gprp_pytype;
1188
1189typedef struct prpinfo {
1190 const char *name;
1191 const octet *keysz;
1192 size_t ctxsz;
1193 size_t blksz;
1194 void (*init)(void *, const void *, size_t);
1195 void (*eblk)(void *, const void *, void *);
1196 void (*dblk)(void *, const void *, void *);
1197} prpinfo;
1198
1199#define PRP_DEF(PRE, pre) \
1200 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
1201 { pre##_init(ctx, k, ksz); } \
1202 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
1203 { \
1204 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
1205 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
1206 } \
1207 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
1208 { \
1209 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
1210 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
1211 } \
1212 static const prpinfo pre##_prpinfo = { \
1213 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
1214 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
1215 };
1216PRPS(PRP_DEF)
1217
1218static const struct prpinfo *const gprptab[] = {
1219#define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
1220 PRPS(PRP_ENTRY)
1221 0
b2687a0a 1222};
03ed9abb
MW		 1223
1224typedef struct gcprp_pyobj {
1225 PyHeapTypeObject ty;
1226 const prpinfo *prp;
1227} gcprp_pyobj;
1228#define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
1229
1230typedef struct gprp_pyobj {
1231 PyObject_HEAD
1232 const prpinfo *prp;
1233} gprp_pyobj;
1234#define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
1235#define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
1236
1237typedef struct prp {
1238 const prpinfo *prp;
1239 void *ctx;
1240} prp;
1241
1242static PyObject *gprp_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1243{
1244 char *kwlist[] = { "key", 0 };
1245 char *k;
1246 int sz;
1247 const prpinfo *prp = GCPRP_PRP(ty);
1248 PyObject *me;
1249
1250 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
1251 goto end;
1252 if (keysz(sz, prp->keysz) != sz) VALERR("bad key length");
1253 me = (PyObject *)ty->tp_alloc(ty, 0);
1254 GPRP_PRP(me) = prp;
1255 prp->init(GPRP_CTX(me), k, sz);
1256 Py_INCREF(me);
1257 return (me);
1258end:
b2687a0a 1259 return (0);
03ed9abb
MW		 1260}
1261
1262static void gprp_pydealloc(PyObject *me)
1263 { Py_DECREF(me->ob_type); FREEOBJ(me); }
1264
1265static PyObject *gcprp_pywrap(const prpinfo *prp)
1266{
1267 gcprp_pyobj *g = newtype(gcprp_pytype, 0, prp->name);
1268 g->prp = prp;
24b3d57b
MW		 1269 g->ty.ht_type.tp_basicsize = sizeof(gprp_pyobj) + prp->ctxsz;
1270 g->ty.ht_type.tp_base = gprp_pytype;
03ed9abb 1271 Py_INCREF(gprp_pytype);
24b3d57b
MW		 1272 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1273 Py_TPFLAGS_BASETYPE |
1274 Py_TPFLAGS_HEAPTYPE);
1275 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1276 g->ty.ht_type.tp_free = 0;
1277 g->ty.ht_type.tp_new = gprp_pynew;
dc075750 1278 typeready(&g->ty.ht_type);
03ed9abb
MW		 1279 return ((PyObject *)g);
1280}
1281
1282static PyObject *gcpget_name(PyObject *me, void *hunoz)
1283 { return (PyString_FromString(GCPRP_PRP(me)->name)); }
1284static PyObject *gcpget_keysz(PyObject *me, void *hunoz)
1285 { return (keysz_pywrap(GCPRP_PRP(me)->keysz)); }
1286static PyObject *gcpget_blksz(PyObject *me, void *hunoz)
1287 { return (PyInt_FromLong(GCPRP_PRP(me)->blksz)); }
1288
1289static PyObject *gpmeth_encrypt(PyObject *me, PyObject *arg)
1290{
1291 char *p;
1292 int n;
1293 PyObject *rc = 0;
1294
1295 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &n)) goto end;
1296 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
1297 rc = bytestring_pywrap(0, n);
1298 GPRP_PRP(me)->eblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
1299end:
1300 return (rc);
1301}
1302
1303static PyObject *gpmeth_decrypt(PyObject *me, PyObject *arg)
1304{
1305 char *p;
1306 int n;
1307 PyObject *rc = 0;
1308
1309 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &n)) goto end;
1310 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
1311 rc = bytestring_pywrap(0, n);
1312 GPRP_PRP(me)->dblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
1313end:
1314 return (rc);
1315}
1316
1317static PyGetSetDef gcprp_pygetset[] = {
1318#define GETSETNAME(op, name) gcp##op##_##name
1319 GET (keysz, "CP.keysz -> acceptable key sizes")
1320 GET (blksz, "CP.blksz -> block size")
1321 GET (name, "CP.name -> name of this kind of PRP")
1322#undef GETSETNAME
1323 { 0 }
1324};
1325
1326static PyMethodDef gprp_pymethods[] = {
1327#define METHNAME(name) gpmeth_##name
1328 METH (encrypt, "P.encrypt(PT) -> CT")
1329 METH (decrypt, "P.decrypt(CT) -> PT")
1330#undef METHNAME
1331 { 0 }
1332};
1333
1334static PyTypeObject gcprp_pytype_skel = {
1335 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1336 "GCPRP", /* @tp_name@ */
03ed9abb
MW		 1337 sizeof(gcprp_pyobj), /* @tp_basicsize@ */
1338 0, /* @tp_itemsize@ */
1339
1340 0, /* @tp_dealloc@ */
1341 0, /* @tp_print@ */
1342 0, /* @tp_getattr@ */
1343 0, /* @tp_setattr@ */
1344 0, /* @tp_compare@ */
1345 0, /* @tp_repr@ */
1346 0, /* @tp_as_number@ */
1347 0, /* @tp_as_sequence@ */
1348 0, /* @tp_as_mapping@ */
1349 0, /* @tp_hash@ */
1350 0, /* @tp_call@ */
1351 0, /* @tp_str@ */
1352 0, /* @tp_getattro@ */
1353 0, /* @tp_setattro@ */
1354 0, /* @tp_as_buffer@ */
1355 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1356 Py_TPFLAGS_BASETYPE,
1357
1358 /* @tp_doc@ */
1359"Pseudorandom permutation metaclass.",
1360
1361 0, /* @tp_traverse@ */
1362 0, /* @tp_clear@ */
1363 0, /* @tp_richcompare@ */
1364 0, /* @tp_weaklistoffset@ */
1365 0, /* @tp_iter@ */
1366 0, /* @tp_iternext@ */
1367 0, /* @tp_methods@ */
1368 0, /* @tp_members@ */
1369 gcprp_pygetset, /* @tp_getset@ */
1370 0, /* @tp_base@ */
1371 0, /* @tp_dict@ */
1372 0, /* @tp_descr_get@ */
1373 0, /* @tp_descr_set@ */
1374 0, /* @tp_dictoffset@ */
1375 0, /* @tp_init@ */
1376 PyType_GenericAlloc, /* @tp_alloc@ */
1377 abstract_pynew, /* @tp_new@ */
1378 0, /* @tp_free@ */
1379 0 /* @tp_is_gc@ */
1380};
1381
1382static PyTypeObject gprp_pytype_skel = {
1383 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1384 "GPRP", /* @tp_name@ */
03ed9abb
MW		 1385 sizeof(gprp_pyobj), /* @tp_basicsize@ */
1386 0, /* @tp_itemsize@ */
1387
1388 gprp_pydealloc, /* @tp_dealloc@ */
1389 0, /* @tp_print@ */
1390 0, /* @tp_getattr@ */
1391 0, /* @tp_setattr@ */
1392 0, /* @tp_compare@ */
1393 0, /* @tp_repr@ */
1394 0, /* @tp_as_number@ */
1395 0, /* @tp_as_sequence@ */
1396 0, /* @tp_as_mapping@ */
1397 0, /* @tp_hash@ */
1398 0, /* @tp_call@ */
1399 0, /* @tp_str@ */
1400 0, /* @tp_getattro@ */
1401 0, /* @tp_setattro@ */
1402 0, /* @tp_as_buffer@ */
1403 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1404 Py_TPFLAGS_BASETYPE,
1405
1406 /* @tp_doc@ */
1407"Pseudorandom permutation, abstract base class.",
1408
1409 0, /* @tp_traverse@ */
1410 0, /* @tp_clear@ */
1411 0, /* @tp_richcompare@ */
1412 0, /* @tp_weaklistoffset@ */
1413 0, /* @tp_iter@ */
1414 0, /* @tp_iternext@ */
1415 gprp_pymethods, /* @tp_methods@ */
1416 0, /* @tp_members@ */
1417 0, /* @tp_getset@ */
1418 0, /* @tp_base@ */
1419 0, /* @tp_dict@ */
1420 0, /* @tp_descr_get@ */
1421 0, /* @tp_descr_set@ */
1422 0, /* @tp_dictoffset@ */
1423 0, /* @tp_init@ */
1424 PyType_GenericAlloc, /* @tp_alloc@ */
1425 abstract_pynew, /* @tp_new@ */
1426 0, /* @tp_free@ */
1427 0 /* @tp_is_gc@ */
1428};
1429
d7ab1bab 1430/*----- Main code ---------------------------------------------------------*/
1431
89157adc
MW		 1432static PyMethodDef methods[] = {
1433#define METHNAME(func) meth_##func
1434 METH (_KeySZ_fromdl, "\
1435fromdl(N) -> M: convert integer discrete log field size to work factor")
1436 METH (_KeySZ_fromschnorr, "\
1437fromschnorr(N) -> M: convert Schnorr group order to work factor")
1438 METH (_KeySZ_fromif, "\
1439fromif(N) -> M: convert integer factorization problem size to work factor")
1440 METH (_KeySZ_fromec, "\
1441fromec(N) -> M: convert elliptic curve group order to work factor")
1442 METH (_KeySZ_todl, "\
1443todl(N) -> M: convert work factor to integer discrete log field size")
1444 METH (_KeySZ_toschnorr, "\
1445toschnorr(N) -> M: convert work factor to Schnorr group order")
1446 METH (_KeySZ_toif, "\
1447toif(N) -> M: convert work factor to integer factorization problem size")
1448 METH (_KeySZ_toec, "\
1449toec(N) -> M: convert work factor to elliptic curve group order")
1450#undef METHNAME
1451 { 0 }
1452};
1453
d7ab1bab 1454void algorithms_pyinit(void)
1455{
1456 INITTYPE(keysz, root);
1457 INITTYPE(keyszany, keysz);
1458 INITTYPE(keyszrange, keysz);
1459 INITTYPE(keyszset, keysz);
1460 INITTYPE(gccipher, type);
1461 INITTYPE(gcipher, root);
1462 INITTYPE(gchash, type);
1463 INITTYPE(ghash, root);
1464 INITTYPE(gcmac, type);
1465 INITTYPE(gmac, type);
1466 INITTYPE(gmhash, ghash);
03ed9abb
MW		 1467 INITTYPE(gcprp, type);
1468 INITTYPE(gprp, root);
89157adc 1469 addmethods(methods);
d7ab1bab 1470}
1471
d7ab1bab 1472GEN(gcciphers, cipher)
1473GEN(gchashes, hash)
1474GEN(gcmacs, mac)
03ed9abb
MW		 1475#define gcprp prpinfo
1476GEN(gcprps, prp)
d7ab1bab 1477
1478void algorithms_pyinsert(PyObject *mod)
1479{
1480 PyObject *d;
1481 INSERT("KeySZ", keysz_pytype);
1482 INSERT("KeySZAny", keyszany_pytype);
1483 INSERT("KeySZRange", keyszrange_pytype);
1484 INSERT("KeySZSet", keyszset_pytype);
1485 INSERT("GCCipher", gccipher_pytype);
1486 INSERT("GCipher", gcipher_pytype);
1487 INSERT("gcciphers", gcciphers());
1488 INSERT("GCHash", gchash_pytype);
1489 INSERT("GHash", ghash_pytype);
1490 INSERT("gchashes", d = gchashes());
1491 sha_pyobj = PyDict_GetItemString(d, "sha"); Py_INCREF(sha_pyobj);
1492 has160_pyobj = PyDict_GetItemString(d, "has160"); Py_INCREF(has160_pyobj);
1493 INSERT("GCMAC", gcmac_pytype);
1494 INSERT("GMAC", gmac_pytype);
1495 INSERT("GMACHash", gmhash_pytype);
1496 INSERT("gcmacs", gcmacs());
03ed9abb
MW		 1497 INSERT("GCPRP", gcprp_pytype);
1498 INSERT("GPRP", gprp_pytype);
1499 INSERT("gcprps", gcprps());
d7ab1bab 1500}
1501
1502/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings