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catacomb/__init__.py: Trim `/' from identifiers names.
[catacomb-python] / rand.c
CommitLineData
d7ab1bab 1/* -*-c-*-
d7ab1bab 2 *
3 * Random-number generators
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"
850a4b48 30#include "algorithms.h"
d7ab1bab 31
32/*----- Main code ---------------------------------------------------------*/
33
34PyTypeObject *grand_pytype, *truerand_pytype;
35PyTypeObject *lcrand_pytype, *fibrand_pytype;
36PyTypeObject *dsarand_pytype, *bbs_pytype, *bbspriv_pytype;
37PyTypeObject *sslprf_pytype, *tlsdx_pytype, *tlsprf_pytype;
38PyObject *rand_pyobj;
39
850a4b48
MW		 40static PyObject *gccrands_dict;
41
d7ab1bab 42static PyObject *grand_dopywrap(PyTypeObject *ty, grand *r, unsigned f)
43{
44 grand_pyobj *g;
45
46 g = (grand_pyobj *)ty->tp_alloc(ty, 0);
47 g->r = r;
48 g->f = f;
49 return ((PyObject *)g);
50}
51
52PyObject *grand_pywrap(grand *r, unsigned f)
53{
54 PyTypeObject *ty = grand_pytype;
850a4b48 55 PyObject *ob;
d7ab1bab 56
57 if (strcmp(r->ops->name, "rand") == 0) ty = truerand_pytype;
58 else if (strcmp(r->ops->name, "lcrand") == 0) ty = lcrand_pytype;
59 else if (strcmp(r->ops->name, "fibrand") == 0) ty = fibrand_pytype;
60 else if (strcmp(r->ops->name, "dsarand") == 0) ty = dsarand_pytype;
61 else if (strcmp(r->ops->name, "bbs") == 0) ty = bbs_pytype;
850a4b48
MW		 62 else if (strcmp(r->ops->name, "sslprf") == 0) ty = sslprf_pytype;
63 else if (strcmp(r->ops->name, "tlsdx") == 0) ty = tlsdx_pytype;
64 else if (strcmp(r->ops->name, "tlsprf") == 0) ty = tlsprf_pytype;
65 else if ((ob = PyDict_GetItemString(gccrands_dict, r->ops->name)) != 0)
66 ty = (PyTypeObject *)ob;
d7ab1bab 67 return (grand_dopywrap(ty, r, f));
68}
69
70CONVFUNC(grand, grand *, GRAND_R)
71
72static PyObject *grmeth_byte(PyObject *me, PyObject *arg)
73{
74 if (!PyArg_ParseTuple(arg, ":byte")) return (0);
75 return (PyInt_FromLong(grand_byte(GRAND_R(me))));
76}
77
78static PyObject *grmeth_word(PyObject *me, PyObject *arg)
79{
80 if (!PyArg_ParseTuple(arg, ":word")) return (0);
fbca05a1 81 return (getulong(grand_word(GRAND_R(me))));
d7ab1bab 82}
83
84static PyObject *grmeth_range(PyObject *me, PyObject *arg)
85{
86 PyObject *m;
87 mp *x = 0;
88 mp *y = 0;
89
90 if (!PyArg_ParseTuple(arg, "O:range", &m)) return (0);
91 if (PyInt_Check(m)) {
92 long mm = PyInt_AS_LONG(m);
93 if (mm < 0)
94 goto negative;
95 if (mm <= 0xffffffff)
96 return (PyInt_FromLong(grand_range(GRAND_R(me), mm)));
97 }
98 if ((x = getmp(m)) == 0)
99 goto end;
100 if (MP_NEGP(x))
101 goto negative;
102 y = mprand_range(MP_NEW, x, GRAND_R(me), 0);
103 MP_DROP(x);
104 return (mp_pywrap(y));
105negative:
106 TYERR("range must be nonnegative");
107end:
108 if (x) MP_DROP(x);
109 return (0);
110}
111
112static PyObject *grmeth_mp(PyObject *me, PyObject *arg, PyObject *kw)
113{
114 size_t l;
115 mpw o;
116 char *kwlist[] = { "bits", "or", 0 };
117
118 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:mp", kwlist,
119 convszt, &l, convmpw, &o))
120 goto end;
121 return (mp_pywrap(mprand(MP_NEW, l, GRAND_R(me), o)));
122end:
123 return (0);
124}
125
126static PyObject *grmeth_block(PyObject *me, PyObject *arg)
127{
128 unsigned long n;
129 PyObject *rc = 0;
130
131 if (!PyArg_ParseTuple(arg, "O&:block", convulong, &n)) goto end;
132 rc = bytestring_pywrap(0, n);
133 grand_fill(GRAND_R(me), PyString_AS_STRING(rc), n);
134end:
135 return (rc);
136}
137
138static int checkop(grand *r, unsigned op, const char *what)
139{
140 if (r->ops->misc(r, GRAND_CHECK, op))
141 return (0);
142 PyErr_Format(PyExc_TypeError, "operation %s not supported", what);
143 return (-1);
144}
145
146static PyObject *grmeth_seedint(PyObject *me, PyObject *arg)
147{
148 int i;
149 grand *r = GRAND_R(me);
150 if (!PyArg_ParseTuple(arg, "i:seedint", &i) ||
151 checkop(r, GRAND_SEEDINT, "seedint"))
152 goto end;
153 r->ops->misc(r, GRAND_SEEDINT, i);
154 RETURN_ME;
155end:
156 return (0);
157}
158
159static PyObject *grmeth_seedword(PyObject *me, PyObject *arg)
160{
161 uint32 u;
162 grand *r = GRAND_R(me);
163 if (!PyArg_ParseTuple(arg, "O&:seedword", convu32, &u) ||
164 checkop(r, GRAND_SEEDUINT32, "seedword"))
165 goto end;
166 r->ops->misc(r, GRAND_SEEDUINT32, u);
167 RETURN_ME;
168end:
169 return (0);
170}
171
172static PyObject *grmeth_seedblock(PyObject *me, PyObject *arg)
173{
174 char *p;
175 int n;
176 grand *r = GRAND_R(me);
177 if (!PyArg_ParseTuple(arg, "s#:seedblock", &p, &n) ||
178 checkop(r, GRAND_SEEDBLOCK, "seedblock"))
179 goto end;
180 r->ops->misc(r, GRAND_SEEDBLOCK, p, (size_t)n);
181 RETURN_ME;
182end:
183 return (0);
184}
185
186static PyObject *grmeth_seedmp(PyObject *me, PyObject *arg)
187{
188 PyObject *x;
189 mp *xx;
190 grand *r = GRAND_R(me);
191 if (!PyArg_ParseTuple(arg, "O:seedmp", &x) ||
192 checkop(r, GRAND_SEEDMP, "seedmp") ||
193 (xx = getmp(x)) == 0)
194 goto end;
195 r->ops->misc(r, GRAND_SEEDMP, xx);
196 MP_DROP(xx);
197 RETURN_ME;
198end:
199 return (0);
200}
201
202static PyObject *grmeth_seedrand(PyObject *me, PyObject *arg, PyObject *kw)
203{
204 char *kwlist[] = { "rng", 0 };
205 grand *r = GRAND_R(me);
206 grand *rr = &rand_global;
207 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:seedrand", kwlist,
208 convgrand, &rr) ||
209 checkop(r, GRAND_SEEDRAND, "seedrand"))
210 goto end;
211 r->ops->misc(r, GRAND_SEEDRAND, rr);
212 RETURN_ME;
213end:
214 return (0);
215}
216
217static PyObject *grmeth_mask(PyObject *me, PyObject *arg)
218{
219 grand *r = GRAND_R(me);
220 char *p, *q;
221 int sz;
222 PyObject *rc;
223
224 if (!PyArg_ParseTuple(arg, "s#:mask", &p, &sz)) return (0);
225 rc = bytestring_pywrap(0, sz);
226 q = PyString_AS_STRING(rc);
227 GR_FILL(r, q, sz);
228 while (sz--) *q++ ^= *p++;
229 return (rc);
230}
231
232static void grand_pydealloc(PyObject *me)
233{
234 grand_pyobj *g = (grand_pyobj *)me;
235 if (g->f & f_freeme)
236 GR_DESTROY(g->r);
3aa33042 237 FREEOBJ(me);
d7ab1bab 238}
239
240static PyObject *grget_name(PyObject *me, void *hunoz)
241 { return (PyString_FromString(GRAND_R(me)->ops->name)); }
242
243static PyObject *grget_cryptop(PyObject *me, void *hunoz)
244 { return (getbool(GRAND_R(me)->ops->f & GRAND_CRYPTO)); }
245
246static PyGetSetDef grand_pygetset[] = {
247#define GETSETNAME(op, name) gr##op##_##name
248 GET (name, "R.name -> name of this kind of generator")
249 GET (cryptop, "R.cryptop -> flag: cryptographically strong?")
250#undef GETSETNAME
251 { 0 }
252};
253
254static PyMethodDef grand_pymethods[] = {
255#define METHNAME(name) grmeth_##name
256 METH (byte, "R.byte() -> BYTE")
257 METH (word, "R.word() -> WORD")
258 METH (block, "R.block(N) -> STRING")
259 KWMETH(mp, "R.mp(bits, or = 0) -> MP")
260 METH (range, "R.range(MAX) -> INT")
261 METH (mask, "R.mask(STR) -> STR")
262 METH (seedint, "R.seedint(I)")
263 METH (seedword, "R.seedword(I)")
264 METH (seedblock, "R.seedblock(BYTES)")
265 METH (seedmp, "R.seedmp(X)")
266 KWMETH(seedrand, "R.seedrand(RR)")
267#undef METHNAME
268 { 0 }
269};
270
271static PyTypeObject grand_pytype_skel = {
6d4db0bf 272 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 273 "GRand", /* @tp_name@ */
d7ab1bab 274 sizeof(grand_pyobj), /* @tp_basicsize@ */
275 0, /* @tp_itemsize@ */
276
277 grand_pydealloc, /* @tp_dealloc@ */
278 0, /* @tp_print@ */
279 0, /* @tp_getattr@ */
280 0, /* @tp_setattr@ */
281 0, /* @tp_compare@ */
282 0, /* @tp_repr@ */
283 0, /* @tp_as_number@ */
284 0, /* @tp_as_sequence@ */
285 0, /* @tp_as_mapping@ */
286 0, /* @tp_hash@ */
287 0, /* @tp_call@ */
288 0, /* @tp_str@ */
289 0, /* @tp_getattro@ */
290 0, /* @tp_setattro@ */
291 0, /* @tp_as_buffer@ */
292 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
293 Py_TPFLAGS_BASETYPE,
294
295 /* @tp_doc@ */
296"Generic random number source.",
297
298 0, /* @tp_traverse@ */
299 0, /* @tp_clear@ */
300 0, /* @tp_richcompare@ */
301 0, /* @tp_weaklistoffset@ */
302 0, /* @tp_iter@ */
963a6148 303 0, /* @tp_iternext@ */
d7ab1bab 304 grand_pymethods, /* @tp_methods@ */
305 0, /* @tp_members@ */
306 grand_pygetset, /* @tp_getset@ */
307 0, /* @tp_base@ */
308 0, /* @tp_dict@ */
309 0, /* @tp_descr_get@ */
310 0, /* @tp_descr_set@ */
311 0, /* @tp_dictoffset@ */
312 0, /* @tp_init@ */
313 PyType_GenericAlloc, /* @tp_alloc@ */
314 abstract_pynew, /* @tp_new@ */
3aa33042 315 0, /* @tp_free@ */
d7ab1bab 316 0 /* @tp_is_gc@ */
317};
318
319static PyObject *lcrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
320{
321 uint32 n = 0;
322 char *kwlist[] = { "seed", 0 };
323 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", kwlist, convu32, &n))
324 return (0);
325 return (grand_dopywrap(lcrand_pytype, lcrand_create(n), f_freeme));
326}
327
328static PyTypeObject lcrand_pytype_skel = {
6d4db0bf 329 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 330 "LCRand", /* @tp_name@ */
d7ab1bab 331 sizeof(grand_pyobj), /* @tp_basicsize@ */
332 0, /* @tp_itemsize@ */
333
334 grand_pydealloc, /* @tp_dealloc@ */
335 0, /* @tp_print@ */
336 0, /* @tp_getattr@ */
337 0, /* @tp_setattr@ */
338 0, /* @tp_compare@ */
339 0, /* @tp_repr@ */
340 0, /* @tp_as_number@ */
341 0, /* @tp_as_sequence@ */
342 0, /* @tp_as_mapping@ */
343 0, /* @tp_hash@ */
344 0, /* @tp_call@ */
345 0, /* @tp_str@ */
346 0, /* @tp_getattro@ */
347 0, /* @tp_setattro@ */
348 0, /* @tp_as_buffer@ */
349 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
350 Py_TPFLAGS_BASETYPE,
351
352 /* @tp_doc@ */
353"Linear congruential generator.",
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 0, /* @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 lcrand_pynew, /* @tp_new@ */
3aa33042 372 0, /* @tp_free@ */
d7ab1bab 373 0 /* @tp_is_gc@ */
374};
375
376static PyObject *fibrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
377{
378 uint32 n = 0;
379 char *kwlist[] = { "seed", 0 };
380 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", kwlist, convu32, &n))
381 return (0);
382 return (grand_dopywrap(fibrand_pytype, fibrand_create(n), f_freeme));
383}
384
385static PyTypeObject fibrand_pytype_skel = {
6d4db0bf 386 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 387 "FibRand", /* @tp_name@ */
d7ab1bab 388 sizeof(grand_pyobj), /* @tp_basicsize@ */
389 0, /* @tp_itemsize@ */
390
391 grand_pydealloc, /* @tp_dealloc@ */
392 0, /* @tp_print@ */
393 0, /* @tp_getattr@ */
394 0, /* @tp_setattr@ */
395 0, /* @tp_compare@ */
396 0, /* @tp_repr@ */
397 0, /* @tp_as_number@ */
398 0, /* @tp_as_sequence@ */
399 0, /* @tp_as_mapping@ */
400 0, /* @tp_hash@ */
401 0, /* @tp_call@ */
402 0, /* @tp_str@ */
403 0, /* @tp_getattro@ */
404 0, /* @tp_setattro@ */
405 0, /* @tp_as_buffer@ */
406 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
407 Py_TPFLAGS_BASETYPE,
408
409 /* @tp_doc@ */
410"Fibonacci generator.",
411
412 0, /* @tp_traverse@ */
413 0, /* @tp_clear@ */
414 0, /* @tp_richcompare@ */
415 0, /* @tp_weaklistoffset@ */
416 0, /* @tp_iter@ */
963a6148 417 0, /* @tp_iternext@ */
d7ab1bab 418 0, /* @tp_methods@ */
419 0, /* @tp_members@ */
420 0, /* @tp_getset@ */
421 0, /* @tp_base@ */
422 0, /* @tp_dict@ */
423 0, /* @tp_descr_get@ */
424 0, /* @tp_descr_set@ */
425 0, /* @tp_dictoffset@ */
426 0, /* @tp_init@ */
427 PyType_GenericAlloc, /* @tp_alloc@ */
428 fibrand_pynew, /* @tp_new@ */
3aa33042 429 0, /* @tp_free@ */
d7ab1bab 430 0 /* @tp_is_gc@ */
431};
432
433/*----- True random generator ---------------------------------------------*/
434
435static PyObject *trmeth_gate(PyObject *me, PyObject *arg)
436{
437 grand *r = GRAND_R(me);
438 if (!PyArg_ParseTuple(arg, ":gate")) return (0);
439 r->ops->misc(r, RAND_GATE);
440 RETURN_ME;
441}
442
443static PyObject *trmeth_stretch(PyObject *me, PyObject *arg)
444{
445 grand *r = GRAND_R(me);
446 if (!PyArg_ParseTuple(arg, ":stretch")) return (0);
447 r->ops->misc(r, RAND_STRETCH);
448 RETURN_ME;
449}
450
850a4b48
MW		 451static PyObject *trmeth_add(PyObject *me, PyObject *arg)
452{
453 grand *r = GRAND_R(me);
454 char *p; int n; unsigned goodbits;
455 if (!PyArg_ParseTuple(arg, "s#O&:add", &p, &n, convuint, &goodbits))
456 return (0);
457 r->ops->misc(r, RAND_ADD, p, (size_t)n, goodbits);
458 RETURN_ME;
459}
460
d7ab1bab 461static PyObject *trmeth_key(PyObject *me, PyObject *arg)
462{
463 grand *r = GRAND_R(me);
464 char *p; int n;
465 if (!PyArg_ParseTuple(arg, "s#:key", &p, &n)) return (0);
850a4b48 466 r->ops->misc(r, RAND_KEY, p, (size_t)n);
d7ab1bab 467 RETURN_ME;
468}
469
470static PyObject *trmeth_seed(PyObject *me, PyObject *arg)
471{
472 grand *r = GRAND_R(me);
473 unsigned u;
474 if (!PyArg_ParseTuple(arg, "O&:seed", convuint, &u)) return (0);
475 if (u > RAND_IBITS) VALERR("pointlessly large");
476 r->ops->misc(r, RAND_SEED, u);
477 RETURN_ME;
478end:
479 return (0);
480}
481
482static PyObject *trmeth_timer(PyObject *me, PyObject *arg)
483{
484 grand *r = GRAND_R(me);
485 if (!PyArg_ParseTuple(arg, ":timer")) return (0);
486 r->ops->misc(r, RAND_TIMER);
487 RETURN_ME;
488}
489
490static PyObject *truerand_pynew(PyTypeObject *ty,
491 PyObject *arg, PyObject *kw)
492{
493 char *kwlist[] = { 0 };
494 grand *r;
495 PyObject *rc = 0;
496 if (PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist)) goto end;
497 r = rand_create();
498 r->ops->misc(r, RAND_NOISESRC, &noise_source);
499 r->ops->misc(r, RAND_SEED, 160);
500 rc = grand_dopywrap(ty, r, f_freeme);
501end:
502 return (rc);
503}
504
505static PyMethodDef truerand_pymethods[] = {
506#define METHNAME(name) trmeth_##name
507 METH (gate, "R.gate()")
508 METH (stretch, "R.stretch()")
509 METH (key, "R.key(BYTES)")
510 METH (seed, "R.seed(NBITS)")
850a4b48 511 METH (add, "R.add(BYTES, GOODBITS")
d7ab1bab 512 METH (timer, "R.timer()")
513#undef METHNAME
514 { 0 }
515};
516
517static PyObject *trget_goodbits(PyObject *me, void *hunoz)
518{
519 grand *r = GRAND_R(me);
520 return (PyInt_FromLong(r->ops->misc(r, RAND_GOODBITS)));
521}
522
523static PyGetSetDef truerand_pygetset[] = {
524#define GETSETNAME(op, name) tr##op##_##name
b2687a0a 525 GET (goodbits, "R.goodbits -> good bits of entropy remaining")
d7ab1bab 526#undef GETSETNAME
527 { 0 }
528};
529
530static PyTypeObject truerand_pytype_skel = {
6d4db0bf 531 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 532 "TrueRand", /* @tp_name@ */
d7ab1bab 533 sizeof(grand_pyobj), /* @tp_basicsize@ */
534 0, /* @tp_itemsize@ */
535
536 grand_pydealloc, /* @tp_dealloc@ */
537 0, /* @tp_print@ */
538 0, /* @tp_getattr@ */
539 0, /* @tp_setattr@ */
540 0, /* @tp_compare@ */
541 0, /* @tp_repr@ */
542 0, /* @tp_as_number@ */
543 0, /* @tp_as_sequence@ */
544 0, /* @tp_as_mapping@ */
545 0, /* @tp_hash@ */
546 0, /* @tp_call@ */
547 0, /* @tp_str@ */
548 0, /* @tp_getattro@ */
549 0, /* @tp_setattro@ */
550 0, /* @tp_as_buffer@ */
551 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
552 Py_TPFLAGS_BASETYPE,
553
554 /* @tp_doc@ */
555"True random number source.",
556
557 0, /* @tp_traverse@ */
558 0, /* @tp_clear@ */
559 0, /* @tp_richcompare@ */
560 0, /* @tp_weaklistoffset@ */
561 0, /* @tp_iter@ */
963a6148 562 0, /* @tp_iternext@ */
d7ab1bab 563 truerand_pymethods, /* @tp_methods@ */
564 0, /* @tp_members@ */
565 truerand_pygetset, /* @tp_getset@ */
566 0, /* @tp_base@ */
567 0, /* @tp_dict@ */
568 0, /* @tp_descr_get@ */
569 0, /* @tp_descr_set@ */
570 0, /* @tp_dictoffset@ */
571 0, /* @tp_init@ */
572 PyType_GenericAlloc, /* @tp_alloc@ */
573 truerand_pynew, /* @tp_new@ */
3aa33042 574 0, /* @tp_free@ */
d7ab1bab 575 0 /* @tp_is_gc@ */
576};
577
850a4b48
MW		 578/*----- Generators from symmetric encryption algorithms -------------------*/
579
580static PyTypeObject *gccrand_pytype, *gcrand_pytype;
581
582typedef grand *gcrand_func(const void *, size_t sz);
583typedef grand *gcirand_func(const void *, size_t sz, uint32);
584typedef struct gccrand_info {
585 const char *name;
586 const octet *keysz;
587 unsigned f;
588 gcrand_func *func;
589} gccrand_info;
590
78f06cd3
MW		 591#define RNGF_INT 1u
592
850a4b48
MW		 593typedef struct gccrand_pyobj {
594 PyHeapTypeObject ty;
595 const gccrand_info *info;
596} gccrand_pyobj;
597#define GCCRAND_INFO(o) (((gccrand_pyobj *)(o))->info)
598
599#define GCCRAND_DEF(name, ksz, func, f) \
600 static const gccrand_info func##_info = \
601 { name, ksz, f, (gcrand_func *)func };
602RNGS(GCCRAND_DEF)
603
604static const gccrand_info *const gcrandtab[] = {
605#define GCCRAND_ENTRY(name, ksz, func, f) &func##_info,
606 RNGS(GCCRAND_ENTRY)
607 0
608};
609
610static PyObject *gcrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
611{
612 const gccrand_info *info = GCCRAND_INFO(ty);
613 static char *kwlist[] = { "key", 0 };
614 char *k;
615 int n;
616
617 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &n))
618 goto end;
619 if (keysz(n, info->keysz) != n) VALERR("bad key length");
620 return (grand_dopywrap(ty, info->func(k, n), f_freeme));
621end:
b2687a0a 622 return (0);
850a4b48
MW		 623}
624
625static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
626{
627 const gccrand_info *info = GCCRAND_INFO(ty);
628 uint32 i = 0;
629 static char *kwlist[] = { "key", "i", 0 };
630 char *k;
631 int n;
632
633 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&:new", kwlist,
634 &k, &n, convu32, &i))
635 goto end;
636 if (keysz(n, info->keysz) != n) VALERR("bad key length");
637 return (grand_dopywrap(ty,
638 ((gcirand_func *)info->func)(k, n, i),
639 f_freeme));
640end:
b2687a0a 641 return (0);
850a4b48
MW		 642}
643
644static PyObject *gccrand_pywrap(const gccrand_info *info)
645{
646 gccrand_pyobj *g = newtype(gccrand_pytype, 0, info->name);
647 g->info = info;
24b3d57b
MW		 648 g->ty.ht_type.tp_basicsize = sizeof(grand_pyobj);
649 g->ty.ht_type.tp_base = gcrand_pytype;
850a4b48 650 Py_INCREF(gcrand_pytype);
24b3d57b
MW		 651 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
652 Py_TPFLAGS_BASETYPE |
653 Py_TPFLAGS_HEAPTYPE);
654 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
655 g->ty.ht_type.tp_free = 0;
850a4b48 656 if (info->f & RNGF_INT)
24b3d57b 657 g->ty.ht_type.tp_new = gcirand_pynew;
850a4b48 658 else
24b3d57b 659 g->ty.ht_type.tp_new = gcrand_pynew;
dc075750 660 typeready(&g->ty.ht_type);
850a4b48
MW		 661 return ((PyObject *)g);
662}
663
664static PyObject *gccrget_name(PyObject *me, void *hunoz)
665 { return (PyString_FromString(GCCRAND_INFO(me)->name)); }
666static PyObject *gccrget_keysz(PyObject *me, void *hunoz)
667 { return (keysz_pywrap(GCCRAND_INFO(me)->keysz)); }
668
669static PyGetSetDef gccrand_pygetset[] = {
670#define GETSETNAME(op, name) gccr##op##_##name
671 GET (keysz, "CR.keysz -> acceptable key sizes")
672 GET (name, "CR.name -> name of this kind of generator")
673#undef GETSETNAME
674 { 0 }
675};
676
677static PyTypeObject gccrand_pytype_skel = {
678 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 679 "GCCRand", /* @tp_name@ */
850a4b48
MW		 680 sizeof(gccrand_pyobj), /* @tp_basicsize@ */
681 0, /* @tp_itemsize@ */
682
683 0, /* @tp_dealloc@ */
684 0, /* @tp_print@ */
685 0, /* @tp_getattr@ */
686 0, /* @tp_setattr@ */
687 0, /* @tp_compare@ */
688 0, /* @tp_repr@ */
689 0, /* @tp_as_number@ */
690 0, /* @tp_as_sequence@ */
691 0, /* @tp_as_mapping@ */
692 0, /* @tp_hash@ */
693 0, /* @tp_call@ */
694 0, /* @tp_str@ */
695 0, /* @tp_getattro@ */
696 0, /* @tp_setattro@ */
697 0, /* @tp_as_buffer@ */
698 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
699 Py_TPFLAGS_BASETYPE,
700
701 /* @tp_doc@ */
702"Metaclass for symmetric crypto-based generators.",
703
704 0, /* @tp_traverse@ */
705 0, /* @tp_clear@ */
706 0, /* @tp_richcompare@ */
707 0, /* @tp_weaklistoffset@ */
708 0, /* @tp_iter@ */
709 0, /* @tp_iternext@ */
710 0, /* @tp_methods@ */
711 0, /* @tp_members@ */
712 gccrand_pygetset, /* @tp_getset@ */
713 0, /* @tp_base@ */
714 0, /* @tp_dict@ */
715 0, /* @tp_descr_get@ */
716 0, /* @tp_descr_set@ */
717 0, /* @tp_dictoffset@ */
718 0, /* @tp_init@ */
719 PyType_GenericAlloc, /* @tp_alloc@ */
720 abstract_pynew, /* @tp_new@ */
721 0, /* @tp_free@ */
722 0 /* @tp_is_gc@ */
723};
724
725static PyTypeObject gcrand_pytype_skel = {
726 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 727 "GCRand", /* @tp_name@ */
850a4b48
MW		 728 sizeof(grand_pyobj), /* @tp_basicsize@ */
729 0, /* @tp_itemsize@ */
730
731 grand_pydealloc, /* @tp_dealloc@ */
732 0, /* @tp_print@ */
733 0, /* @tp_getattr@ */
734 0, /* @tp_setattr@ */
735 0, /* @tp_compare@ */
736 0, /* @tp_repr@ */
737 0, /* @tp_as_number@ */
738 0, /* @tp_as_sequence@ */
739 0, /* @tp_as_mapping@ */
740 0, /* @tp_hash@ */
741 0, /* @tp_call@ */
742 0, /* @tp_str@ */
743 0, /* @tp_getattro@ */
744 0, /* @tp_setattro@ */
745 0, /* @tp_as_buffer@ */
746 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
747 Py_TPFLAGS_BASETYPE,
748
749 /* @tp_doc@ */
750"Abstract base class for symmetric crypto-based generators.",
751
752 0, /* @tp_traverse@ */
753 0, /* @tp_clear@ */
754 0, /* @tp_richcompare@ */
755 0, /* @tp_weaklistoffset@ */
756 0, /* @tp_iter@ */
757 0, /* @tp_iternext@ */
758 0, /* @tp_methods@ */
759 0, /* @tp_members@ */
760 0, /* @tp_getset@ */
761 0, /* @tp_base@ */
762 0, /* @tp_dict@ */
763 0, /* @tp_descr_get@ */
764 0, /* @tp_descr_set@ */
765 0, /* @tp_dictoffset@ */
766 0, /* @tp_init@ */
767 PyType_GenericAlloc, /* @tp_alloc@ */
768 abstract_pynew, /* @tp_new@ */
769 0, /* @tp_free@ */
770 0 /* @tp_is_gc@ */
771};
772
d7ab1bab 773/*----- SSL and TLS generators --------------------------------------------*/
774
775static PyObject *sslprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
776{
777 char *k, *s;
778 int ksz, ssz;
779 const gchash *hco = &md5, *hci = &sha;
780 PyObject *rc = 0;
781 char *kwlist[] = { "key", "seed", "ohash", "ihash", 0 };
782
783 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&O&:new", kwlist,
784 &k, &ksz, &s, &ssz,
785 convgchash, &hco, convgchash, &hci))
786 goto end;
787 rc = grand_dopywrap(ty, sslprf_rand(hco, hci, k, ksz, s, ssz), f_freeme);
788end:
789 return (rc);
790}
791
792static PyObject *tlsdx_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
793{
794 char *k, *s;
795 int ksz, ssz;
796 const gcmac *mc = &sha_hmac;
797 PyObject *rc = 0;
798 char *kwlist[] = { "key", "seed", "mac", 0 };
799
800 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&:new", kwlist,
801 &k, &ksz, &s, &ssz,
802 convgcmac, &mc))
803 goto end;
804 rc = grand_dopywrap(ty, tlsdx_rand(mc, k, ksz, s, ssz), f_freeme);
805end:
806 return (rc);
807}
808
809static PyObject *tlsprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
810{
811 char *k, *s;
812 int ksz, ssz;
813 const gcmac *mcl = &md5_hmac, *mcr = &sha_hmac;
814 PyObject *rc = 0;
815 char *kwlist[] = { "key", "seed", "lmac", "rmac", 0 };
816
817 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&O&:new", kwlist,
818 &k, &ksz, &s, &ssz,
819 convgcmac, &mcl, convgcmac, &mcr))
820 goto end;
821 rc = grand_dopywrap(ty, tlsprf_rand(mcl, mcr, k, ksz, s, ssz), f_freeme);
822end:
823 return (rc);
824}
825
826static PyTypeObject sslprf_pytype_skel = {
6d4db0bf 827 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 828 "SSLRand", /* @tp_name@ */
d7ab1bab 829 sizeof(grand_pyobj), /* @tp_basicsize@ */
830 0, /* @tp_itemsize@ */
831
832 grand_pydealloc, /* @tp_dealloc@ */
833 0, /* @tp_print@ */
834 0, /* @tp_getattr@ */
835 0, /* @tp_setattr@ */
836 0, /* @tp_compare@ */
837 0, /* @tp_repr@ */
838 0, /* @tp_as_number@ */
839 0, /* @tp_as_sequence@ */
840 0, /* @tp_as_mapping@ */
841 0, /* @tp_hash@ */
842 0, /* @tp_call@ */
843 0, /* @tp_str@ */
844 0, /* @tp_getattro@ */
845 0, /* @tp_setattro@ */
846 0, /* @tp_as_buffer@ */
847 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
848 Py_TPFLAGS_BASETYPE,
849
850 /* @tp_doc@ */
851"Random number generator for SSL master secret.",
852
853 0, /* @tp_traverse@ */
854 0, /* @tp_clear@ */
855 0, /* @tp_richcompare@ */
856 0, /* @tp_weaklistoffset@ */
857 0, /* @tp_iter@ */
963a6148 858 0, /* @tp_iternext@ */
d7ab1bab 859 0, /* @tp_methods@ */
860 0, /* @tp_members@ */
861 0, /* @tp_getset@ */
862 0, /* @tp_base@ */
863 0, /* @tp_dict@ */
864 0, /* @tp_descr_get@ */
865 0, /* @tp_descr_set@ */
866 0, /* @tp_dictoffset@ */
867 0, /* @tp_init@ */
868 PyType_GenericAlloc, /* @tp_alloc@ */
869 sslprf_pynew, /* @tp_new@ */
3aa33042 870 0, /* @tp_free@ */
d7ab1bab 871 0 /* @tp_is_gc@ */
872};
873
874static PyTypeObject tlsdx_pytype_skel = {
6d4db0bf 875 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 876 "TLSDataExpansion", /* @tp_name@ */
d7ab1bab 877 sizeof(grand_pyobj), /* @tp_basicsize@ */
878 0, /* @tp_itemsize@ */
879
880 grand_pydealloc, /* @tp_dealloc@ */
881 0, /* @tp_print@ */
882 0, /* @tp_getattr@ */
883 0, /* @tp_setattr@ */
884 0, /* @tp_compare@ */
885 0, /* @tp_repr@ */
886 0, /* @tp_as_number@ */
887 0, /* @tp_as_sequence@ */
888 0, /* @tp_as_mapping@ */
889 0, /* @tp_hash@ */
890 0, /* @tp_call@ */
891 0, /* @tp_str@ */
892 0, /* @tp_getattro@ */
893 0, /* @tp_setattro@ */
894 0, /* @tp_as_buffer@ */
895 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
896 Py_TPFLAGS_BASETYPE,
897
898 /* @tp_doc@ */
899"TLS data expansion function.",
900
901 0, /* @tp_traverse@ */
902 0, /* @tp_clear@ */
903 0, /* @tp_richcompare@ */
904 0, /* @tp_weaklistoffset@ */
905 0, /* @tp_iter@ */
963a6148 906 0, /* @tp_iternext@ */
d7ab1bab 907 0, /* @tp_methods@ */
908 0, /* @tp_members@ */
909 0, /* @tp_getset@ */
910 0, /* @tp_base@ */
911 0, /* @tp_dict@ */
912 0, /* @tp_descr_get@ */
913 0, /* @tp_descr_set@ */
914 0, /* @tp_dictoffset@ */
915 0, /* @tp_init@ */
916 PyType_GenericAlloc, /* @tp_alloc@ */
917 tlsdx_pynew, /* @tp_new@ */
3aa33042 918 0, /* @tp_free@ */
d7ab1bab 919 0 /* @tp_is_gc@ */
920};
921
922static PyTypeObject tlsprf_pytype_skel = {
6d4db0bf 923 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 924 "TLSPRF", /* @tp_name@ */
d7ab1bab 925 sizeof(grand_pyobj), /* @tp_basicsize@ */
926 0, /* @tp_itemsize@ */
927
928 grand_pydealloc, /* @tp_dealloc@ */
929 0, /* @tp_print@ */
930 0, /* @tp_getattr@ */
931 0, /* @tp_setattr@ */
932 0, /* @tp_compare@ */
933 0, /* @tp_repr@ */
934 0, /* @tp_as_number@ */
935 0, /* @tp_as_sequence@ */
936 0, /* @tp_as_mapping@ */
937 0, /* @tp_hash@ */
938 0, /* @tp_call@ */
939 0, /* @tp_str@ */
940 0, /* @tp_getattro@ */
941 0, /* @tp_setattro@ */
942 0, /* @tp_as_buffer@ */
943 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
944 Py_TPFLAGS_BASETYPE,
945
946 /* @tp_doc@ */
947"TLS pseudorandom function.",
948
949 0, /* @tp_traverse@ */
950 0, /* @tp_clear@ */
951 0, /* @tp_richcompare@ */
952 0, /* @tp_weaklistoffset@ */
953 0, /* @tp_iter@ */
963a6148 954 0, /* @tp_iternext@ */
d7ab1bab 955 0, /* @tp_methods@ */
956 0, /* @tp_members@ */
957 0, /* @tp_getset@ */
958 0, /* @tp_base@ */
959 0, /* @tp_dict@ */
960 0, /* @tp_descr_get@ */
961 0, /* @tp_descr_set@ */
962 0, /* @tp_dictoffset@ */
963 0, /* @tp_init@ */
964 PyType_GenericAlloc, /* @tp_alloc@ */
965 tlsprf_pynew, /* @tp_new@ */
3aa33042 966 0, /* @tp_free@ */
d7ab1bab 967 0 /* @tp_is_gc@ */
968};
969
970/*----- DSA generator -----------------------------------------------------*/
971
972static PyObject *dsarand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
973{
974 char *p;
975 int sz;
976 PyObject *rc = 0;
977 char *kwlist[] = { "seed", 0 };
978
979 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &p, &sz))
980 goto end;
981 rc = grand_dopywrap(ty, dsarand_create(p, sz), f_freeme);
982end:
98963817 983 return (rc);
d7ab1bab 984}
985
986static PyObject *drget_seed(PyObject *me, void *hunoz)
987{
988 grand *r = GRAND_R(me);
989 int n = r->ops->misc(r, DSARAND_SEEDSZ);
990 PyObject *rc = bytestring_pywrap(0, n);
991 r->ops->misc(r, DSARAND_GETSEED, PyString_AS_STRING(rc));
992 return (rc);
993}
994
995static PyGetSetDef dsarand_pygetset[] = {
996#define GETSETNAME(op, name) dr##op##_##name
997 GET (seed, "R.seed -> current generator seed")
998#undef GETSETNAME
999 { 0 }
1000};
1001
1002static PyTypeObject dsarand_pytype_skel = {
6d4db0bf 1003 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1004 "DSARand", /* @tp_name@ */
d7ab1bab 1005 sizeof(grand_pyobj), /* @tp_basicsize@ */
1006 0, /* @tp_itemsize@ */
1007
1008 grand_pydealloc, /* @tp_dealloc@ */
1009 0, /* @tp_print@ */
1010 0, /* @tp_getattr@ */
1011 0, /* @tp_setattr@ */
1012 0, /* @tp_compare@ */
1013 0, /* @tp_repr@ */
1014 0, /* @tp_as_number@ */
1015 0, /* @tp_as_sequence@ */
1016 0, /* @tp_as_mapping@ */
1017 0, /* @tp_hash@ */
1018 0, /* @tp_call@ */
1019 0, /* @tp_str@ */
1020 0, /* @tp_getattro@ */
1021 0, /* @tp_setattro@ */
1022 0, /* @tp_as_buffer@ */
1023 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1024 Py_TPFLAGS_BASETYPE,
1025
1026 /* @tp_doc@ */
1027"Pseudorandom number generator for constructing DSA parameters.",
1028
1029 0, /* @tp_traverse@ */
1030 0, /* @tp_clear@ */
1031 0, /* @tp_richcompare@ */
1032 0, /* @tp_weaklistoffset@ */
1033 0, /* @tp_iter@ */
963a6148 1034 0, /* @tp_iternext@ */
d7ab1bab 1035 0, /* @tp_methods@ */
1036 0, /* @tp_members@ */
1037 dsarand_pygetset, /* @tp_getset@ */
1038 0, /* @tp_base@ */
1039 0, /* @tp_dict@ */
1040 0, /* @tp_descr_get@ */
1041 0, /* @tp_descr_set@ */
1042 0, /* @tp_dictoffset@ */
1043 0, /* @tp_init@ */
1044 PyType_GenericAlloc, /* @tp_alloc@ */
1045 dsarand_pynew, /* @tp_new@ */
3aa33042 1046 0, /* @tp_free@ */
d7ab1bab 1047 0 /* @tp_is_gc@ */
1048};
1049
1050/*----- Blum-Blum-Shub generator ------------------------------------------*/
1051
1052static PyObject *bbs_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1053{
1054 mp *n = 0, *x = MP_TWO;
1055 PyObject *rc = 0;
1056 char *kwlist[] = { "n", "x", 0 };
1057
1058 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", kwlist,
1059 convmp, &n, convmp, &x))
1060 goto end;
1061 rc = grand_dopywrap(ty, bbs_rand(n, x), f_freeme);
1062end:
1063 mp_drop(n);
1064 mp_drop(x);
1065 return (rc);
1066}
1067
1068static PyObject *bbsmeth_step(PyObject *me, PyObject *arg)
1069{
1070 grand *r = GRAND_R(me); if (!PyArg_ParseTuple(arg, ":step")) return (0);
1071 r->ops->misc(r, BBS_STEP); RETURN_ME;
1072}
1073
1074static PyObject *bbsmeth_bits(PyObject *me, PyObject *arg)
1075{
1076 grand *r = GRAND_R(me); unsigned n; uint32 w;
1077 if (!PyArg_ParseTuple(arg, "O&:bits", convuint, &n)) goto end;
1078 if (n > 32) VALERR("can't get more than 32 bits");
fbca05a1 1079 r->ops->misc(r, BBS_BITS, n, &w); return (getulong(w));
d7ab1bab 1080end:
1081 return (0);
1082}
1083
1084static PyObject *bbsmeth_wrap(PyObject *me, PyObject *arg)
1085{
1086 grand *r = GRAND_R(me); if (!PyArg_ParseTuple(arg, ":wrap")) return (0);
1087 r->ops->misc(r, BBS_WRAP); RETURN_ME;
1088}
1089
1090static PyObject *bbsget_n(PyObject *me, void *hunoz)
1091{
1092 mp *x = MP_NEW; grand *r = GRAND_R(me);
1093 r->ops->misc(r, BBS_MOD, &x); return (mp_pywrap(x));
1094}
1095
1096static PyObject *bbsget_x(PyObject *me, void *hunoz)
1097{
1098 mp *x = MP_NEW; grand *r = GRAND_R(me);
1099 r->ops->misc(r, BBS_STATE, &x); return (mp_pywrap(x));
1100}
1101
1102static int bbsset_x(PyObject *me, PyObject *val, void *hunoz)
1103{
f368b46e 1104 mp *x = 0; grand *r = GRAND_R(me); int rc = -1; if (!x) NIERR("__del__");
d7ab1bab 1105 if ((x = getmp(val)) == 0) goto end; r->ops->misc(r, BBS_SET, x); rc = 0;
1106 end: mp_drop(x); return (rc);
1107}
1108
1109static PyObject *bbsget_stepsz(PyObject *me, void *hunoz)
1110{
1111 grand *r = GRAND_R(me);
1112 return (PyInt_FromLong(r->ops->misc(r, BBS_STEPSZ)));
1113}
1114
1115static PyMethodDef bbs_pymethods[] = {
1116#define METHNAME(name) bbsmeth_##name
1117 METH (step, "R.step(): steps the generator (not useful)")
1118 METH (bits, "R.bits(N) -> W: returns N bits (<= 32) from the generator")
1119 METH (wrap, "R.wrap(): flushes unused bits in internal buffer")
1120#undef METHNAME
1121 { 0 }
1122};
1123
1124static PyGetSetDef bbs_pygetset[] = {
1125#define GETSETNAME(op, name) bbs##op##_##name
1126 GET (n, "R.n -> Blum modulus")
1127 GETSET(x, "R.x -> current seed value")
1128 GET (stepsz, "R.stepsz -> number of bits generated per step")
1129#undef GETSETNAME
1130 { 0 }
1131};
1132
1133static PyTypeObject bbs_pytype_skel = {
6d4db0bf 1134 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1135 "BlumBlumShub", /* @tp_name@ */
d7ab1bab 1136 sizeof(grand_pyobj), /* @tp_basicsize@ */
1137 0, /* @tp_itemsize@ */
1138
1139 grand_pydealloc, /* @tp_dealloc@ */
1140 0, /* @tp_print@ */
1141 0, /* @tp_getattr@ */
1142 0, /* @tp_setattr@ */
1143 0, /* @tp_compare@ */
1144 0, /* @tp_repr@ */
1145 0, /* @tp_as_number@ */
1146 0, /* @tp_as_sequence@ */
1147 0, /* @tp_as_mapping@ */
1148 0, /* @tp_hash@ */
1149 0, /* @tp_call@ */
1150 0, /* @tp_str@ */
1151 0, /* @tp_getattro@ */
1152 0, /* @tp_setattro@ */
1153 0, /* @tp_as_buffer@ */
1154 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1155 Py_TPFLAGS_BASETYPE,
1156
1157 /* @tp_doc@ */
1158"Blum-Blum-Shub strong pseudorandom number generator.",
1159
1160 0, /* @tp_traverse@ */
1161 0, /* @tp_clear@ */
1162 0, /* @tp_richcompare@ */
1163 0, /* @tp_weaklistoffset@ */
1164 0, /* @tp_iter@ */
963a6148 1165 0, /* @tp_iternext@ */
d7ab1bab 1166 bbs_pymethods, /* @tp_methods@ */
1167 0, /* @tp_members@ */
1168 bbs_pygetset, /* @tp_getset@ */
1169 0, /* @tp_base@ */
1170 0, /* @tp_dict@ */
1171 0, /* @tp_descr_get@ */
1172 0, /* @tp_descr_set@ */
1173 0, /* @tp_dictoffset@ */
1174 0, /* @tp_init@ */
1175 PyType_GenericAlloc, /* @tp_alloc@ */
1176 bbs_pynew, /* @tp_new@ */
3aa33042 1177 0, /* @tp_free@ */
d7ab1bab 1178 0 /* @tp_is_gc@ */
1179};
1180
1181typedef struct bbspriv_pyobj {
1182 grand_pyobj gr;
1183 bbs_priv bp;
1184} bbspriv_pyobj;
1185
1186#define BBSPRIV_BP(o) (&((bbspriv_pyobj *)(o))->bp)
1187
1188static PyObject *bbspriv_pynew(PyTypeObject *ty,
1189 PyObject *arg, PyObject *kw)
1190{
1191 mp *p = 0, *q = 0, *n = 0, *x = MP_TWO;
1192 bbspriv_pyobj *rc = 0;
1193 char *kwlist[] = { "n", "p", "q", "seed", 0 };
1194
1195 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&O&O&O&:new", kwlist,
1196 convmp, &n, convmp, &p, convmp, &q,
1197 convmp, &x))
1198 goto end;
1199 if (!n + !p + !q > 1) VALERR("must specify at least two of n, p, q");
1200 if (!n) n = mp_mul(MP_NEW, p, q);
1201 else if (!p) mp_div(&p, 0, n, q);
1202 else if (!q) mp_div(&q, 0, n, p);
1203 rc = (bbspriv_pyobj *)ty->tp_alloc(ty, 0);
1204 rc->gr.r = bbs_rand(n, x);
1205 rc->gr.f = f_freeme;
1206 rc->bp.p = MP_COPY(p);
1207 rc->bp.q = MP_COPY(q);
1208 rc->bp.n = MP_COPY(n);
1209end:
1210 mp_drop(p); mp_drop(q); mp_drop(n); mp_drop(x);
1211 return ((PyObject *)rc);
1212}
1213
1214static PyObject *meth__BBSPriv_generate(PyObject *me,
1215 PyObject *arg, PyObject *kw)
1216{
1217 bbs_priv bp = { 0 };
1218 mp *x = MP_TWO;
1219 pgev evt = { 0 };
1220 unsigned nbits, n = 0;
1221 grand *r = &rand_global;
1222 char *kwlist[] = { "class", "nbits", "event", "rng", "nsteps", "seed", 0 };
1223 bbspriv_pyobj *rc = 0;
1224
1225 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&|O&O&O&O&:generate", kwlist,
1226 &me, convuint, &nbits, convpgev, &evt,
1227 convgrand, &r, convuint, &n, convmp, &x))
1228 goto end;
1229 if (bbs_gen(&bp, nbits, r, n, evt.proc, evt.ctx))
1230 VALERR("prime genration failed");
1231 rc = PyObject_New(bbspriv_pyobj, bbspriv_pytype);
1232 rc->gr.r = bbs_rand(bp.n, x);
1233 rc->gr.f = f_freeme;
1234 rc->bp.p = MP_COPY(bp.p);
1235 rc->bp.q = MP_COPY(bp.q);
1236 rc->bp.n = MP_COPY(bp.n);
1237end:
1238 mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n); mp_drop(x);
b2687a0a 1239 return ((PyObject *)rc);
d7ab1bab 1240}
1241
1242static void bbspriv_pydealloc(PyObject *me)
1243{
1244 bbs_priv *bp = BBSPRIV_BP(me);
1245 mp_drop(bp->n);
1246 mp_drop(bp->p);
1247 mp_drop(bp->q);
1248 grand_pydealloc(me);
1249}
1250
1251static PyObject *bpmeth_ff(PyObject *me, PyObject *arg)
1252{
1253 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1254 if (!PyArg_ParseTuple(arg, "O&:ff", convmp, &n)) return (0);
1255 r->ops->misc(r, BBS_FF, bp, n); RETURN_ME;
1256}
1257
1258static PyObject *bpmeth_rew(PyObject *me, PyObject *arg)
1259{
1260 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1261 if (!PyArg_ParseTuple(arg, "O&:rew", convmp, &n)) return (0);
1262 r->ops->misc(r, BBS_REW, bp, n); RETURN_ME;
1263}
1264
1265static PyObject *bpget_n(PyObject *me, void *hunoz)
1266 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->n))); }
1267
1268static PyObject *bpget_p(PyObject *me, void *hunoz)
1269 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->p))); }
1270
1271static PyObject *bpget_q(PyObject *me, void *hunoz)
1272 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->q))); }
1273
1274static PyMethodDef bbspriv_pymethods[] = {
1275#define METHNAME(name) bpmeth_##name
1276 METH (ff, "R.ff(N): fast-forward N places")
1277 METH (rew, "R.rew(N): rewind N places")
1278#undef METHNAME
1279 { 0 }
1280};
1281
1282static PyGetSetDef bbspriv_pygetset[] = {
1283#define GETSETNAME(op, name) bp##op##_##name
b2687a0a
MW		 1284 GET (n, "R.n -> Blum modulus")
1285 GET (p, "R.p -> one of the factors of the modulus")
1286 GET (q, "R.q -> one of the factors of the modulus")
d7ab1bab 1287#undef GETSETNAME
1288 { 0 }
1289};
1290
1291static PyTypeObject bbspriv_pytype_skel = {
6d4db0bf 1292 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1293 "BBSPriv", /* @tp_name@ */
d7ab1bab 1294 sizeof(bbspriv_pyobj), /* @tp_basicsize@ */
1295 0, /* @tp_itemsize@ */
1296
1297 bbspriv_pydealloc, /* @tp_dealloc@ */
1298 0, /* @tp_print@ */
1299 0, /* @tp_getattr@ */
1300 0, /* @tp_setattr@ */
1301 0, /* @tp_compare@ */
1302 0, /* @tp_repr@ */
1303 0, /* @tp_as_number@ */
1304 0, /* @tp_as_sequence@ */
1305 0, /* @tp_as_mapping@ */
1306 0, /* @tp_hash@ */
1307 0, /* @tp_call@ */
1308 0, /* @tp_str@ */
1309 0, /* @tp_getattro@ */
1310 0, /* @tp_setattro@ */
1311 0, /* @tp_as_buffer@ */
1312 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1313 Py_TPFLAGS_BASETYPE,
1314
1315 /* @tp_doc@ */
1316"Blum-Blum-Shub strong pseudorandom generator, with private key.",
1317
1318 0, /* @tp_traverse@ */
1319 0, /* @tp_clear@ */
1320 0, /* @tp_richcompare@ */
1321 0, /* @tp_weaklistoffset@ */
1322 0, /* @tp_iter@ */
963a6148 1323 0, /* @tp_iternext@ */
d7ab1bab 1324 bbspriv_pymethods, /* @tp_methods@ */
1325 0, /* @tp_members@ */
1326 bbspriv_pygetset, /* @tp_getset@ */
1327 0, /* @tp_base@ */
1328 0, /* @tp_dict@ */
1329 0, /* @tp_descr_get@ */
1330 0, /* @tp_descr_set@ */
1331 0, /* @tp_dictoffset@ */
1332 0, /* @tp_init@ */
1333 PyType_GenericAlloc, /* @tp_alloc@ */
1334 bbspriv_pynew, /* @tp_new@ */
3aa33042 1335 0, /* @tp_free@ */
d7ab1bab 1336 0 /* @tp_is_gc@ */
1337};
1338
1339/*----- Global stuff ------------------------------------------------------*/
1340
1341static PyMethodDef methods[] = {
1342#define METHNAME(name) meth_##name
1343 KWMETH(_BBSPriv_generate, "\
1344generate(NBITS, [event = pgen_nullev, rng = rand, nsteps = 0, seed = 2])")
1345#undef METHNAME
1346 { 0 }
1347};
1348
1349void rand_pyinit(void)
1350{
1351 INITTYPE(grand, root);
1352 INITTYPE(truerand, grand);
1353 INITTYPE(fibrand, grand);
1354 INITTYPE(lcrand, grand);
1355 INITTYPE(dsarand, grand);
1356 INITTYPE(bbs, grand);
1357 INITTYPE(bbspriv, bbs);
1358 INITTYPE(sslprf, grand);
1359 INITTYPE(tlsdx, grand);
1360 INITTYPE(tlsprf, grand);
850a4b48
MW		 1361 INITTYPE(gccrand, type);
1362 INITTYPE(gcrand, grand);
d7ab1bab 1363 rand_noisesrc(RAND_GLOBAL, &noise_source);
1364 rand_seed(RAND_GLOBAL, 160);
1365 addmethods(methods);
1366}
1367
850a4b48
MW		 1368#define gccrand gccrand_info
1369GEN(gccrands, crand)
1370
d7ab1bab 1371void rand_pyinsert(PyObject *mod)
1372{
1373 INSERT("GRand", grand_pytype);
1374 INSERT("TrueRand", truerand_pytype);
1375 INSERT("LCRand", lcrand_pytype);
1376 INSERT("FibRand", fibrand_pytype);
1377 INSERT("SSLRand", sslprf_pytype);
1378 INSERT("TLSDataExpansion", tlsdx_pytype);
1379 INSERT("TLSPRF", tlsprf_pytype);
1380 INSERT("DSARand", dsarand_pytype);
1381 INSERT("BlumBlumShub", bbs_pytype);
1382 INSERT("BBSPriv", bbspriv_pytype);
850a4b48
MW		 1383 INSERT("GCCRand", gccrand_pytype);
1384 INSERT("GCRand", gcrand_pytype);
d7ab1bab 1385 rand_pyobj = grand_pywrap(&rand_global, 0); Py_INCREF(rand_pyobj);
850a4b48
MW		 1386 gccrands_dict = gccrands(); Py_INCREF(gccrands_dict);
1387 INSERT("gccrands", gccrands_dict);
d7ab1bab 1388 INSERT("rand", rand_pyobj);
1389}
1390
1391/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings