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algorithms.c: Add bindings for HSalsa20/r and HChaCha/r.
[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);
cb08602a
MW		 93 if (mm <= 0)
94 goto notpos;
d7ab1bab 95 if (mm <= 0xffffffff)
96 return (PyInt_FromLong(grand_range(GRAND_R(me), mm)));
97 }
98 if ((x = getmp(m)) == 0)
99 goto end;
cb08602a
MW		 100 if (!MP_POSP(x))
101 goto notpos;
d7ab1bab 102 y = mprand_range(MP_NEW, x, GRAND_R(me), 0);
103 MP_DROP(x);
104 return (mp_pywrap(y));
cb08602a
MW		 105notpos:
106 VALERR("range must be strictly positive");
d7ab1bab 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;
cb08602a 115 mpw o = 0;
d7ab1bab 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;
cb08602a 121 if (l < MPW_BITS && (o >> l)) VALERR("or mask too large");
d7ab1bab 122 return (mp_pywrap(mprand(MP_NEW, l, GRAND_R(me), o)));
123end:
124 return (0);
125}
126
127static PyObject *grmeth_block(PyObject *me, PyObject *arg)
128{
129 unsigned long n;
130 PyObject *rc = 0;
131
132 if (!PyArg_ParseTuple(arg, "O&:block", convulong, &n)) goto end;
133 rc = bytestring_pywrap(0, n);
134 grand_fill(GRAND_R(me), PyString_AS_STRING(rc), n);
135end:
136 return (rc);
137}
138
139static int checkop(grand *r, unsigned op, const char *what)
140{
141 if (r->ops->misc(r, GRAND_CHECK, op))
142 return (0);
143 PyErr_Format(PyExc_TypeError, "operation %s not supported", what);
144 return (-1);
145}
146
147static PyObject *grmeth_seedint(PyObject *me, PyObject *arg)
148{
149 int i;
150 grand *r = GRAND_R(me);
151 if (!PyArg_ParseTuple(arg, "i:seedint", &i) ||
152 checkop(r, GRAND_SEEDINT, "seedint"))
153 goto end;
154 r->ops->misc(r, GRAND_SEEDINT, i);
155 RETURN_ME;
156end:
157 return (0);
158}
159
160static PyObject *grmeth_seedword(PyObject *me, PyObject *arg)
161{
162 uint32 u;
163 grand *r = GRAND_R(me);
164 if (!PyArg_ParseTuple(arg, "O&:seedword", convu32, &u) ||
165 checkop(r, GRAND_SEEDUINT32, "seedword"))
166 goto end;
167 r->ops->misc(r, GRAND_SEEDUINT32, u);
168 RETURN_ME;
169end:
170 return (0);
171}
172
173static PyObject *grmeth_seedblock(PyObject *me, PyObject *arg)
174{
175 char *p;
176 int n;
177 grand *r = GRAND_R(me);
178 if (!PyArg_ParseTuple(arg, "s#:seedblock", &p, &n) ||
179 checkop(r, GRAND_SEEDBLOCK, "seedblock"))
180 goto end;
181 r->ops->misc(r, GRAND_SEEDBLOCK, p, (size_t)n);
182 RETURN_ME;
183end:
184 return (0);
185}
186
187static PyObject *grmeth_seedmp(PyObject *me, PyObject *arg)
188{
189 PyObject *x;
190 mp *xx;
191 grand *r = GRAND_R(me);
192 if (!PyArg_ParseTuple(arg, "O:seedmp", &x) ||
193 checkop(r, GRAND_SEEDMP, "seedmp") ||
194 (xx = getmp(x)) == 0)
195 goto end;
196 r->ops->misc(r, GRAND_SEEDMP, xx);
197 MP_DROP(xx);
198 RETURN_ME;
199end:
200 return (0);
201}
202
203static PyObject *grmeth_seedrand(PyObject *me, PyObject *arg, PyObject *kw)
204{
205 char *kwlist[] = { "rng", 0 };
206 grand *r = GRAND_R(me);
207 grand *rr = &rand_global;
208 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:seedrand", kwlist,
209 convgrand, &rr) ||
210 checkop(r, GRAND_SEEDRAND, "seedrand"))
211 goto end;
212 r->ops->misc(r, GRAND_SEEDRAND, rr);
213 RETURN_ME;
214end:
215 return (0);
216}
217
218static PyObject *grmeth_mask(PyObject *me, PyObject *arg)
219{
220 grand *r = GRAND_R(me);
221 char *p, *q;
222 int sz;
223 PyObject *rc;
224
225 if (!PyArg_ParseTuple(arg, "s#:mask", &p, &sz)) return (0);
226 rc = bytestring_pywrap(0, sz);
227 q = PyString_AS_STRING(rc);
228 GR_FILL(r, q, sz);
229 while (sz--) *q++ ^= *p++;
230 return (rc);
231}
232
233static void grand_pydealloc(PyObject *me)
234{
235 grand_pyobj *g = (grand_pyobj *)me;
236 if (g->f & f_freeme)
237 GR_DESTROY(g->r);
3aa33042 238 FREEOBJ(me);
d7ab1bab 239}
240
241static PyObject *grget_name(PyObject *me, void *hunoz)
242 { return (PyString_FromString(GRAND_R(me)->ops->name)); }
243
244static PyObject *grget_cryptop(PyObject *me, void *hunoz)
245 { return (getbool(GRAND_R(me)->ops->f & GRAND_CRYPTO)); }
246
247static PyGetSetDef grand_pygetset[] = {
248#define GETSETNAME(op, name) gr##op##_##name
249 GET (name, "R.name -> name of this kind of generator")
250 GET (cryptop, "R.cryptop -> flag: cryptographically strong?")
251#undef GETSETNAME
252 { 0 }
253};
254
255static PyMethodDef grand_pymethods[] = {
256#define METHNAME(name) grmeth_##name
257 METH (byte, "R.byte() -> BYTE")
258 METH (word, "R.word() -> WORD")
259 METH (block, "R.block(N) -> STRING")
986bcc44 260 KWMETH(mp, "R.mp(bits, [or = 0]) -> MP")
d7ab1bab 261 METH (range, "R.range(MAX) -> INT")
262 METH (mask, "R.mask(STR) -> STR")
263 METH (seedint, "R.seedint(I)")
264 METH (seedword, "R.seedword(I)")
265 METH (seedblock, "R.seedblock(BYTES)")
266 METH (seedmp, "R.seedmp(X)")
267 KWMETH(seedrand, "R.seedrand(RR)")
268#undef METHNAME
269 { 0 }
270};
271
272static PyTypeObject grand_pytype_skel = {
6d4db0bf 273 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 274 "GRand", /* @tp_name@ */
d7ab1bab 275 sizeof(grand_pyobj), /* @tp_basicsize@ */
276 0, /* @tp_itemsize@ */
277
278 grand_pydealloc, /* @tp_dealloc@ */
279 0, /* @tp_print@ */
280 0, /* @tp_getattr@ */
281 0, /* @tp_setattr@ */
282 0, /* @tp_compare@ */
283 0, /* @tp_repr@ */
284 0, /* @tp_as_number@ */
285 0, /* @tp_as_sequence@ */
286 0, /* @tp_as_mapping@ */
287 0, /* @tp_hash@ */
288 0, /* @tp_call@ */
289 0, /* @tp_str@ */
290 0, /* @tp_getattro@ */
291 0, /* @tp_setattro@ */
292 0, /* @tp_as_buffer@ */
293 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
294 Py_TPFLAGS_BASETYPE,
295
296 /* @tp_doc@ */
297"Generic random number source.",
298
299 0, /* @tp_traverse@ */
300 0, /* @tp_clear@ */
301 0, /* @tp_richcompare@ */
302 0, /* @tp_weaklistoffset@ */
303 0, /* @tp_iter@ */
963a6148 304 0, /* @tp_iternext@ */
d7ab1bab 305 grand_pymethods, /* @tp_methods@ */
306 0, /* @tp_members@ */
307 grand_pygetset, /* @tp_getset@ */
308 0, /* @tp_base@ */
309 0, /* @tp_dict@ */
310 0, /* @tp_descr_get@ */
311 0, /* @tp_descr_set@ */
312 0, /* @tp_dictoffset@ */
313 0, /* @tp_init@ */
314 PyType_GenericAlloc, /* @tp_alloc@ */
315 abstract_pynew, /* @tp_new@ */
3aa33042 316 0, /* @tp_free@ */
d7ab1bab 317 0 /* @tp_is_gc@ */
318};
319
320static PyObject *lcrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
321{
322 uint32 n = 0;
323 char *kwlist[] = { "seed", 0 };
324 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", kwlist, convu32, &n))
325 return (0);
326 return (grand_dopywrap(lcrand_pytype, lcrand_create(n), f_freeme));
327}
328
329static PyTypeObject lcrand_pytype_skel = {
6d4db0bf 330 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 331 "LCRand", /* @tp_name@ */
d7ab1bab 332 sizeof(grand_pyobj), /* @tp_basicsize@ */
333 0, /* @tp_itemsize@ */
334
335 grand_pydealloc, /* @tp_dealloc@ */
336 0, /* @tp_print@ */
337 0, /* @tp_getattr@ */
338 0, /* @tp_setattr@ */
339 0, /* @tp_compare@ */
340 0, /* @tp_repr@ */
341 0, /* @tp_as_number@ */
342 0, /* @tp_as_sequence@ */
343 0, /* @tp_as_mapping@ */
344 0, /* @tp_hash@ */
345 0, /* @tp_call@ */
346 0, /* @tp_str@ */
347 0, /* @tp_getattro@ */
348 0, /* @tp_setattro@ */
349 0, /* @tp_as_buffer@ */
350 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
351 Py_TPFLAGS_BASETYPE,
352
353 /* @tp_doc@ */
354"Linear congruential generator.",
355
356 0, /* @tp_traverse@ */
357 0, /* @tp_clear@ */
358 0, /* @tp_richcompare@ */
359 0, /* @tp_weaklistoffset@ */
360 0, /* @tp_iter@ */
963a6148 361 0, /* @tp_iternext@ */
d7ab1bab 362 0, /* @tp_methods@ */
363 0, /* @tp_members@ */
364 0, /* @tp_getset@ */
365 0, /* @tp_base@ */
366 0, /* @tp_dict@ */
367 0, /* @tp_descr_get@ */
368 0, /* @tp_descr_set@ */
369 0, /* @tp_dictoffset@ */
370 0, /* @tp_init@ */
371 PyType_GenericAlloc, /* @tp_alloc@ */
372 lcrand_pynew, /* @tp_new@ */
3aa33042 373 0, /* @tp_free@ */
d7ab1bab 374 0 /* @tp_is_gc@ */
375};
376
377static PyObject *fibrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
378{
379 uint32 n = 0;
380 char *kwlist[] = { "seed", 0 };
381 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", kwlist, convu32, &n))
382 return (0);
383 return (grand_dopywrap(fibrand_pytype, fibrand_create(n), f_freeme));
384}
385
386static PyTypeObject fibrand_pytype_skel = {
6d4db0bf 387 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 388 "FibRand", /* @tp_name@ */
d7ab1bab 389 sizeof(grand_pyobj), /* @tp_basicsize@ */
390 0, /* @tp_itemsize@ */
391
392 grand_pydealloc, /* @tp_dealloc@ */
393 0, /* @tp_print@ */
394 0, /* @tp_getattr@ */
395 0, /* @tp_setattr@ */
396 0, /* @tp_compare@ */
397 0, /* @tp_repr@ */
398 0, /* @tp_as_number@ */
399 0, /* @tp_as_sequence@ */
400 0, /* @tp_as_mapping@ */
401 0, /* @tp_hash@ */
402 0, /* @tp_call@ */
403 0, /* @tp_str@ */
404 0, /* @tp_getattro@ */
405 0, /* @tp_setattro@ */
406 0, /* @tp_as_buffer@ */
407 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
408 Py_TPFLAGS_BASETYPE,
409
410 /* @tp_doc@ */
411"Fibonacci generator.",
412
413 0, /* @tp_traverse@ */
414 0, /* @tp_clear@ */
415 0, /* @tp_richcompare@ */
416 0, /* @tp_weaklistoffset@ */
417 0, /* @tp_iter@ */
963a6148 418 0, /* @tp_iternext@ */
d7ab1bab 419 0, /* @tp_methods@ */
420 0, /* @tp_members@ */
421 0, /* @tp_getset@ */
422 0, /* @tp_base@ */
423 0, /* @tp_dict@ */
424 0, /* @tp_descr_get@ */
425 0, /* @tp_descr_set@ */
426 0, /* @tp_dictoffset@ */
427 0, /* @tp_init@ */
428 PyType_GenericAlloc, /* @tp_alloc@ */
429 fibrand_pynew, /* @tp_new@ */
3aa33042 430 0, /* @tp_free@ */
d7ab1bab 431 0 /* @tp_is_gc@ */
432};
433
434/*----- True random generator ---------------------------------------------*/
435
436static PyObject *trmeth_gate(PyObject *me, PyObject *arg)
437{
438 grand *r = GRAND_R(me);
439 if (!PyArg_ParseTuple(arg, ":gate")) return (0);
440 r->ops->misc(r, RAND_GATE);
441 RETURN_ME;
442}
443
444static PyObject *trmeth_stretch(PyObject *me, PyObject *arg)
445{
446 grand *r = GRAND_R(me);
447 if (!PyArg_ParseTuple(arg, ":stretch")) return (0);
448 r->ops->misc(r, RAND_STRETCH);
449 RETURN_ME;
450}
451
850a4b48
MW		 452static PyObject *trmeth_add(PyObject *me, PyObject *arg)
453{
454 grand *r = GRAND_R(me);
455 char *p; int n; unsigned goodbits;
456 if (!PyArg_ParseTuple(arg, "s#O&:add", &p, &n, convuint, &goodbits))
457 return (0);
458 r->ops->misc(r, RAND_ADD, p, (size_t)n, goodbits);
459 RETURN_ME;
460}
461
d7ab1bab 462static PyObject *trmeth_key(PyObject *me, PyObject *arg)
463{
464 grand *r = GRAND_R(me);
465 char *p; int n;
466 if (!PyArg_ParseTuple(arg, "s#:key", &p, &n)) return (0);
850a4b48 467 r->ops->misc(r, RAND_KEY, p, (size_t)n);
d7ab1bab 468 RETURN_ME;
469}
470
471static PyObject *trmeth_seed(PyObject *me, PyObject *arg)
472{
473 grand *r = GRAND_R(me);
474 unsigned u;
475 if (!PyArg_ParseTuple(arg, "O&:seed", convuint, &u)) return (0);
476 if (u > RAND_IBITS) VALERR("pointlessly large");
477 r->ops->misc(r, RAND_SEED, u);
478 RETURN_ME;
479end:
480 return (0);
481}
482
483static PyObject *trmeth_timer(PyObject *me, PyObject *arg)
484{
485 grand *r = GRAND_R(me);
486 if (!PyArg_ParseTuple(arg, ":timer")) return (0);
487 r->ops->misc(r, RAND_TIMER);
488 RETURN_ME;
489}
490
491static PyObject *truerand_pynew(PyTypeObject *ty,
492 PyObject *arg, PyObject *kw)
493{
494 char *kwlist[] = { 0 };
495 grand *r;
496 PyObject *rc = 0;
497 if (PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist)) goto end;
498 r = rand_create();
499 r->ops->misc(r, RAND_NOISESRC, &noise_source);
500 r->ops->misc(r, RAND_SEED, 160);
501 rc = grand_dopywrap(ty, r, f_freeme);
502end:
503 return (rc);
504}
505
506static PyMethodDef truerand_pymethods[] = {
507#define METHNAME(name) trmeth_##name
508 METH (gate, "R.gate()")
509 METH (stretch, "R.stretch()")
510 METH (key, "R.key(BYTES)")
511 METH (seed, "R.seed(NBITS)")
850a4b48 512 METH (add, "R.add(BYTES, GOODBITS")
d7ab1bab 513 METH (timer, "R.timer()")
514#undef METHNAME
515 { 0 }
516};
517
518static PyObject *trget_goodbits(PyObject *me, void *hunoz)
519{
520 grand *r = GRAND_R(me);
521 return (PyInt_FromLong(r->ops->misc(r, RAND_GOODBITS)));
522}
523
524static PyGetSetDef truerand_pygetset[] = {
525#define GETSETNAME(op, name) tr##op##_##name
b2687a0a 526 GET (goodbits, "R.goodbits -> good bits of entropy remaining")
d7ab1bab 527#undef GETSETNAME
528 { 0 }
529};
530
531static PyTypeObject truerand_pytype_skel = {
6d4db0bf 532 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 533 "TrueRand", /* @tp_name@ */
d7ab1bab 534 sizeof(grand_pyobj), /* @tp_basicsize@ */
535 0, /* @tp_itemsize@ */
536
537 grand_pydealloc, /* @tp_dealloc@ */
538 0, /* @tp_print@ */
539 0, /* @tp_getattr@ */
540 0, /* @tp_setattr@ */
541 0, /* @tp_compare@ */
542 0, /* @tp_repr@ */
543 0, /* @tp_as_number@ */
544 0, /* @tp_as_sequence@ */
545 0, /* @tp_as_mapping@ */
546 0, /* @tp_hash@ */
547 0, /* @tp_call@ */
548 0, /* @tp_str@ */
549 0, /* @tp_getattro@ */
550 0, /* @tp_setattro@ */
551 0, /* @tp_as_buffer@ */
552 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
553 Py_TPFLAGS_BASETYPE,
554
555 /* @tp_doc@ */
556"True random number source.",
557
558 0, /* @tp_traverse@ */
559 0, /* @tp_clear@ */
560 0, /* @tp_richcompare@ */
561 0, /* @tp_weaklistoffset@ */
562 0, /* @tp_iter@ */
963a6148 563 0, /* @tp_iternext@ */
d7ab1bab 564 truerand_pymethods, /* @tp_methods@ */
565 0, /* @tp_members@ */
566 truerand_pygetset, /* @tp_getset@ */
567 0, /* @tp_base@ */
568 0, /* @tp_dict@ */
569 0, /* @tp_descr_get@ */
570 0, /* @tp_descr_set@ */
571 0, /* @tp_dictoffset@ */
572 0, /* @tp_init@ */
573 PyType_GenericAlloc, /* @tp_alloc@ */
574 truerand_pynew, /* @tp_new@ */
3aa33042 575 0, /* @tp_free@ */
d7ab1bab 576 0 /* @tp_is_gc@ */
577};
578
850a4b48
MW		 579/*----- Generators from symmetric encryption algorithms -------------------*/
580
35e5469a 581static PyTypeObject *gccrand_pytype, *gcrand_pytype, *gclatinrand_pytype;
850a4b48
MW		 582
583typedef grand *gcrand_func(const void *, size_t sz);
584typedef grand *gcirand_func(const void *, size_t sz, uint32);
3f4f64b8 585typedef grand *gcnrand_func(const void *, size_t sz, const void *);
850a4b48
MW		 586typedef struct gccrand_info {
587 const char *name;
588 const octet *keysz;
589 unsigned f;
3f4f64b8 590 size_t noncesz;
850a4b48
MW		 591 gcrand_func *func;
592} gccrand_info;
593
78f06cd3 594#define RNGF_INT 1u
3f4f64b8 595#define RNGF_NONCE 2u
35e5469a 596#define RNGF_LATIN 4u
78f06cd3 597
850a4b48
MW		 598typedef struct gccrand_pyobj {
599 PyHeapTypeObject ty;
600 const gccrand_info *info;
601} gccrand_pyobj;
602#define GCCRAND_INFO(o) (((gccrand_pyobj *)(o))->info)
603
3f4f64b8 604#define GCCRAND_DEF(name, ksz, func, f, nsz) \
850a4b48 605 static const gccrand_info func##_info = \
3f4f64b8 606 { name, ksz, f, nsz, (gcrand_func *)func };
850a4b48
MW		 607RNGS(GCCRAND_DEF)
608
609static const gccrand_info *const gcrandtab[] = {
3f4f64b8 610#define GCCRAND_ENTRY(name, ksz, func, f, nsz) &func##_info,
850a4b48
MW		 611 RNGS(GCCRAND_ENTRY)
612 0
613};
614
615static PyObject *gcrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
616{
617 const gccrand_info *info = GCCRAND_INFO(ty);
618 static char *kwlist[] = { "key", 0 };
619 char *k;
620 int n;
621
622 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &n))
623 goto end;
624 if (keysz(n, info->keysz) != n) VALERR("bad key length");
625 return (grand_dopywrap(ty, info->func(k, n), f_freeme));
626end:
b2687a0a 627 return (0);
850a4b48
MW		 628}
629
630static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
631{
632 const gccrand_info *info = GCCRAND_INFO(ty);
633 uint32 i = 0;
634 static char *kwlist[] = { "key", "i", 0 };
635 char *k;
636 int n;
637
638 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&:new", kwlist,
639 &k, &n, convu32, &i))
640 goto end;
641 if (keysz(n, info->keysz) != n) VALERR("bad key length");
642 return (grand_dopywrap(ty,
643 ((gcirand_func *)info->func)(k, n, i),
644 f_freeme));
645end:
b2687a0a 646 return (0);
850a4b48
MW		 647}
648
3f4f64b8
MW		 649static PyObject *gcnrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
650{
651 const gccrand_info *info = GCCRAND_INFO(ty);
652 static char *kwlist[] = { "key", "nonce", 0 };
653 char *k, *n;
654 int ksz, nsz;
655
656 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#:new", kwlist,
657 &k, &ksz, &n, &nsz))
658 goto end;
659 if (keysz(ksz, info->keysz) != ksz) VALERR("bad key length");
660 if (nsz != info->noncesz) VALERR("bad nonce length");
661 return (grand_dopywrap(ty,
662 ((gcnrand_func *)info->func)(k, ksz, n),
663 f_freeme));
664end:
665 return (0);
666}
667
850a4b48
MW		 668static PyObject *gccrand_pywrap(const gccrand_info *info)
669{
670 gccrand_pyobj *g = newtype(gccrand_pytype, 0, info->name);
671 g->info = info;
24b3d57b 672 g->ty.ht_type.tp_basicsize = sizeof(grand_pyobj);
35e5469a
MW		 673 g->ty.ht_type.tp_base =
674 (info->f & RNGF_LATIN) ? gclatinrand_pytype : gcrand_pytype;
675 Py_INCREF(g->ty.ht_type.tp_base);
24b3d57b
MW		 676 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
677 Py_TPFLAGS_BASETYPE |
678 Py_TPFLAGS_HEAPTYPE);
679 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
680 g->ty.ht_type.tp_free = 0;
3f4f64b8
MW		 681 if (info->f & RNGF_INT) g->ty.ht_type.tp_new = gcirand_pynew;
682 else if (info->f & RNGF_NONCE) g->ty.ht_type.tp_new = gcnrand_pynew;
683 else g->ty.ht_type.tp_new = gcrand_pynew;
dc075750 684 typeready(&g->ty.ht_type);
850a4b48
MW		 685 return ((PyObject *)g);
686}
687
688static PyObject *gccrget_name(PyObject *me, void *hunoz)
689 { return (PyString_FromString(GCCRAND_INFO(me)->name)); }
690static PyObject *gccrget_keysz(PyObject *me, void *hunoz)
691 { return (keysz_pywrap(GCCRAND_INFO(me)->keysz)); }
692
35e5469a
MW		 693static PyObject *gclrmeth_tell(PyObject *me, PyObject *arg)
694{
695 grand *r = GRAND_R(me);
696 PyObject *rc = 0;
697 kludge64 off;
698
699 if (!PyArg_ParseTuple(arg, ":tell")) return (0);
700 r->ops->misc(r, SALSA20_TELLU64, &off);
701 rc = getk64(off);
702 return (rc);
703}
704
705static PyObject *gclrmeth_seek(PyObject *me, PyObject *arg)
706{
707 grand *r = GRAND_R(me);
708 kludge64 off;
709
710 if (!PyArg_ParseTuple(arg, "O&:seek", convk64, &off)) return (0);
711 r->ops->misc(r, SALSA20_SEEKU64, off);
712 RETURN_ME;
713}
714
850a4b48
MW		 715static PyGetSetDef gccrand_pygetset[] = {
716#define GETSETNAME(op, name) gccr##op##_##name
717 GET (keysz, "CR.keysz -> acceptable key sizes")
718 GET (name, "CR.name -> name of this kind of generator")
719#undef GETSETNAME
720 { 0 }
721};
722
35e5469a
MW		 723static PyMethodDef gclatinrand_pymethods[] = {
724#define METHNAME(name) gclrmeth_##name
725 METH (tell, "R.tell() -> OFF")
726 METH (seek, "R.seek(OFF)")
727#undef METHNAME
728 { 0 }
729};
730
850a4b48
MW		 731static PyTypeObject gccrand_pytype_skel = {
732 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 733 "GCCRand", /* @tp_name@ */
850a4b48
MW		 734 sizeof(gccrand_pyobj), /* @tp_basicsize@ */
735 0, /* @tp_itemsize@ */
736
737 0, /* @tp_dealloc@ */
738 0, /* @tp_print@ */
739 0, /* @tp_getattr@ */
740 0, /* @tp_setattr@ */
741 0, /* @tp_compare@ */
742 0, /* @tp_repr@ */
743 0, /* @tp_as_number@ */
744 0, /* @tp_as_sequence@ */
745 0, /* @tp_as_mapping@ */
746 0, /* @tp_hash@ */
747 0, /* @tp_call@ */
748 0, /* @tp_str@ */
749 0, /* @tp_getattro@ */
750 0, /* @tp_setattro@ */
751 0, /* @tp_as_buffer@ */
752 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
753 Py_TPFLAGS_BASETYPE,
754
755 /* @tp_doc@ */
756"Metaclass for symmetric crypto-based generators.",
757
758 0, /* @tp_traverse@ */
759 0, /* @tp_clear@ */
760 0, /* @tp_richcompare@ */
761 0, /* @tp_weaklistoffset@ */
762 0, /* @tp_iter@ */
763 0, /* @tp_iternext@ */
764 0, /* @tp_methods@ */
765 0, /* @tp_members@ */
766 gccrand_pygetset, /* @tp_getset@ */
767 0, /* @tp_base@ */
768 0, /* @tp_dict@ */
769 0, /* @tp_descr_get@ */
770 0, /* @tp_descr_set@ */
771 0, /* @tp_dictoffset@ */
772 0, /* @tp_init@ */
773 PyType_GenericAlloc, /* @tp_alloc@ */
774 abstract_pynew, /* @tp_new@ */
775 0, /* @tp_free@ */
776 0 /* @tp_is_gc@ */
777};
778
779static PyTypeObject gcrand_pytype_skel = {
780 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 781 "GCRand", /* @tp_name@ */
850a4b48
MW		 782 sizeof(grand_pyobj), /* @tp_basicsize@ */
783 0, /* @tp_itemsize@ */
784
785 grand_pydealloc, /* @tp_dealloc@ */
786 0, /* @tp_print@ */
787 0, /* @tp_getattr@ */
788 0, /* @tp_setattr@ */
789 0, /* @tp_compare@ */
790 0, /* @tp_repr@ */
791 0, /* @tp_as_number@ */
792 0, /* @tp_as_sequence@ */
793 0, /* @tp_as_mapping@ */
794 0, /* @tp_hash@ */
795 0, /* @tp_call@ */
796 0, /* @tp_str@ */
797 0, /* @tp_getattro@ */
798 0, /* @tp_setattro@ */
799 0, /* @tp_as_buffer@ */
800 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
801 Py_TPFLAGS_BASETYPE,
802
803 /* @tp_doc@ */
804"Abstract base class for symmetric crypto-based generators.",
805
806 0, /* @tp_traverse@ */
807 0, /* @tp_clear@ */
808 0, /* @tp_richcompare@ */
809 0, /* @tp_weaklistoffset@ */
810 0, /* @tp_iter@ */
811 0, /* @tp_iternext@ */
812 0, /* @tp_methods@ */
813 0, /* @tp_members@ */
814 0, /* @tp_getset@ */
815 0, /* @tp_base@ */
816 0, /* @tp_dict@ */
817 0, /* @tp_descr_get@ */
818 0, /* @tp_descr_set@ */
819 0, /* @tp_dictoffset@ */
820 0, /* @tp_init@ */
821 PyType_GenericAlloc, /* @tp_alloc@ */
822 abstract_pynew, /* @tp_new@ */
823 0, /* @tp_free@ */
824 0 /* @tp_is_gc@ */
825};
826
35e5469a
MW		 827static PyTypeObject gclatinrand_pytype_skel = {
828 PyObject_HEAD_INIT(0) 0, /* Header */
829 "GCLatinRand", /* @tp_name@ */
830 sizeof(grand_pyobj), /* @tp_basicsize@ */
831 0, /* @tp_itemsize@ */
832
833 grand_pydealloc, /* @tp_dealloc@ */
834 0, /* @tp_print@ */
835 0, /* @tp_getattr@ */
836 0, /* @tp_setattr@ */
837 0, /* @tp_compare@ */
838 0, /* @tp_repr@ */
839 0, /* @tp_as_number@ */
840 0, /* @tp_as_sequence@ */
841 0, /* @tp_as_mapping@ */
842 0, /* @tp_hash@ */
843 0, /* @tp_call@ */
844 0, /* @tp_str@ */
845 0, /* @tp_getattro@ */
846 0, /* @tp_setattro@ */
847 0, /* @tp_as_buffer@ */
848 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
849 Py_TPFLAGS_BASETYPE,
850
851 /* @tp_doc@ */
852"Abstract base class for symmetric crypto-based generators.",
853
854 0, /* @tp_traverse@ */
855 0, /* @tp_clear@ */
856 0, /* @tp_richcompare@ */
857 0, /* @tp_weaklistoffset@ */
858 0, /* @tp_iter@ */
859 0, /* @tp_iternext@ */
860 gclatinrand_pymethods, /* @tp_methods@ */
861 0, /* @tp_members@ */
862 0, /* @tp_getset@ */
863 0, /* @tp_base@ */
864 0, /* @tp_dict@ */
865 0, /* @tp_descr_get@ */
866 0, /* @tp_descr_set@ */
867 0, /* @tp_dictoffset@ */
868 0, /* @tp_init@ */
869 PyType_GenericAlloc, /* @tp_alloc@ */
870 abstract_pynew, /* @tp_new@ */
871 0, /* @tp_free@ */
872 0 /* @tp_is_gc@ */
873};
874
d7ab1bab 875/*----- SSL and TLS generators --------------------------------------------*/
876
877static PyObject *sslprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
878{
879 char *k, *s;
880 int ksz, ssz;
881 const gchash *hco = &md5, *hci = &sha;
882 PyObject *rc = 0;
883 char *kwlist[] = { "key", "seed", "ohash", "ihash", 0 };
884
885 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&O&:new", kwlist,
886 &k, &ksz, &s, &ssz,
887 convgchash, &hco, convgchash, &hci))
888 goto end;
889 rc = grand_dopywrap(ty, sslprf_rand(hco, hci, k, ksz, s, ssz), f_freeme);
890end:
891 return (rc);
892}
893
894static PyObject *tlsdx_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
895{
896 char *k, *s;
897 int ksz, ssz;
898 const gcmac *mc = &sha_hmac;
899 PyObject *rc = 0;
900 char *kwlist[] = { "key", "seed", "mac", 0 };
901
902 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&:new", kwlist,
903 &k, &ksz, &s, &ssz,
904 convgcmac, &mc))
905 goto end;
906 rc = grand_dopywrap(ty, tlsdx_rand(mc, k, ksz, s, ssz), f_freeme);
907end:
908 return (rc);
909}
910
911static PyObject *tlsprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
912{
913 char *k, *s;
914 int ksz, ssz;
915 const gcmac *mcl = &md5_hmac, *mcr = &sha_hmac;
916 PyObject *rc = 0;
917 char *kwlist[] = { "key", "seed", "lmac", "rmac", 0 };
918
919 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&O&:new", kwlist,
920 &k, &ksz, &s, &ssz,
921 convgcmac, &mcl, convgcmac, &mcr))
922 goto end;
923 rc = grand_dopywrap(ty, tlsprf_rand(mcl, mcr, k, ksz, s, ssz), f_freeme);
924end:
925 return (rc);
926}
927
928static PyTypeObject sslprf_pytype_skel = {
6d4db0bf 929 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 930 "SSLRand", /* @tp_name@ */
d7ab1bab 931 sizeof(grand_pyobj), /* @tp_basicsize@ */
932 0, /* @tp_itemsize@ */
933
934 grand_pydealloc, /* @tp_dealloc@ */
935 0, /* @tp_print@ */
936 0, /* @tp_getattr@ */
937 0, /* @tp_setattr@ */
938 0, /* @tp_compare@ */
939 0, /* @tp_repr@ */
940 0, /* @tp_as_number@ */
941 0, /* @tp_as_sequence@ */
942 0, /* @tp_as_mapping@ */
943 0, /* @tp_hash@ */
944 0, /* @tp_call@ */
945 0, /* @tp_str@ */
946 0, /* @tp_getattro@ */
947 0, /* @tp_setattro@ */
948 0, /* @tp_as_buffer@ */
949 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
950 Py_TPFLAGS_BASETYPE,
951
952 /* @tp_doc@ */
953"Random number generator for SSL master secret.",
954
955 0, /* @tp_traverse@ */
956 0, /* @tp_clear@ */
957 0, /* @tp_richcompare@ */
958 0, /* @tp_weaklistoffset@ */
959 0, /* @tp_iter@ */
963a6148 960 0, /* @tp_iternext@ */
d7ab1bab 961 0, /* @tp_methods@ */
962 0, /* @tp_members@ */
963 0, /* @tp_getset@ */
964 0, /* @tp_base@ */
965 0, /* @tp_dict@ */
966 0, /* @tp_descr_get@ */
967 0, /* @tp_descr_set@ */
968 0, /* @tp_dictoffset@ */
969 0, /* @tp_init@ */
970 PyType_GenericAlloc, /* @tp_alloc@ */
971 sslprf_pynew, /* @tp_new@ */
3aa33042 972 0, /* @tp_free@ */
d7ab1bab 973 0 /* @tp_is_gc@ */
974};
975
976static PyTypeObject tlsdx_pytype_skel = {
6d4db0bf 977 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 978 "TLSDataExpansion", /* @tp_name@ */
d7ab1bab 979 sizeof(grand_pyobj), /* @tp_basicsize@ */
980 0, /* @tp_itemsize@ */
981
982 grand_pydealloc, /* @tp_dealloc@ */
983 0, /* @tp_print@ */
984 0, /* @tp_getattr@ */
985 0, /* @tp_setattr@ */
986 0, /* @tp_compare@ */
987 0, /* @tp_repr@ */
988 0, /* @tp_as_number@ */
989 0, /* @tp_as_sequence@ */
990 0, /* @tp_as_mapping@ */
991 0, /* @tp_hash@ */
992 0, /* @tp_call@ */
993 0, /* @tp_str@ */
994 0, /* @tp_getattro@ */
995 0, /* @tp_setattro@ */
996 0, /* @tp_as_buffer@ */
997 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
998 Py_TPFLAGS_BASETYPE,
999
1000 /* @tp_doc@ */
1001"TLS data expansion function.",
1002
1003 0, /* @tp_traverse@ */
1004 0, /* @tp_clear@ */
1005 0, /* @tp_richcompare@ */
1006 0, /* @tp_weaklistoffset@ */
1007 0, /* @tp_iter@ */
963a6148 1008 0, /* @tp_iternext@ */
d7ab1bab 1009 0, /* @tp_methods@ */
1010 0, /* @tp_members@ */
1011 0, /* @tp_getset@ */
1012 0, /* @tp_base@ */
1013 0, /* @tp_dict@ */
1014 0, /* @tp_descr_get@ */
1015 0, /* @tp_descr_set@ */
1016 0, /* @tp_dictoffset@ */
1017 0, /* @tp_init@ */
1018 PyType_GenericAlloc, /* @tp_alloc@ */
1019 tlsdx_pynew, /* @tp_new@ */
3aa33042 1020 0, /* @tp_free@ */
d7ab1bab 1021 0 /* @tp_is_gc@ */
1022};
1023
1024static PyTypeObject tlsprf_pytype_skel = {
6d4db0bf 1025 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1026 "TLSPRF", /* @tp_name@ */
d7ab1bab 1027 sizeof(grand_pyobj), /* @tp_basicsize@ */
1028 0, /* @tp_itemsize@ */
1029
1030 grand_pydealloc, /* @tp_dealloc@ */
1031 0, /* @tp_print@ */
1032 0, /* @tp_getattr@ */
1033 0, /* @tp_setattr@ */
1034 0, /* @tp_compare@ */
1035 0, /* @tp_repr@ */
1036 0, /* @tp_as_number@ */
1037 0, /* @tp_as_sequence@ */
1038 0, /* @tp_as_mapping@ */
1039 0, /* @tp_hash@ */
1040 0, /* @tp_call@ */
1041 0, /* @tp_str@ */
1042 0, /* @tp_getattro@ */
1043 0, /* @tp_setattro@ */
1044 0, /* @tp_as_buffer@ */
1045 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1046 Py_TPFLAGS_BASETYPE,
1047
1048 /* @tp_doc@ */
1049"TLS pseudorandom function.",
1050
1051 0, /* @tp_traverse@ */
1052 0, /* @tp_clear@ */
1053 0, /* @tp_richcompare@ */
1054 0, /* @tp_weaklistoffset@ */
1055 0, /* @tp_iter@ */
963a6148 1056 0, /* @tp_iternext@ */
d7ab1bab 1057 0, /* @tp_methods@ */
1058 0, /* @tp_members@ */
1059 0, /* @tp_getset@ */
1060 0, /* @tp_base@ */
1061 0, /* @tp_dict@ */
1062 0, /* @tp_descr_get@ */
1063 0, /* @tp_descr_set@ */
1064 0, /* @tp_dictoffset@ */
1065 0, /* @tp_init@ */
1066 PyType_GenericAlloc, /* @tp_alloc@ */
1067 tlsprf_pynew, /* @tp_new@ */
3aa33042 1068 0, /* @tp_free@ */
d7ab1bab 1069 0 /* @tp_is_gc@ */
1070};
1071
1072/*----- DSA generator -----------------------------------------------------*/
1073
1074static PyObject *dsarand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1075{
1076 char *p;
1077 int sz;
1078 PyObject *rc = 0;
1079 char *kwlist[] = { "seed", 0 };
1080
1081 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &p, &sz))
1082 goto end;
1083 rc = grand_dopywrap(ty, dsarand_create(p, sz), f_freeme);
1084end:
98963817 1085 return (rc);
d7ab1bab 1086}
1087
1088static PyObject *drget_seed(PyObject *me, void *hunoz)
1089{
1090 grand *r = GRAND_R(me);
1091 int n = r->ops->misc(r, DSARAND_SEEDSZ);
1092 PyObject *rc = bytestring_pywrap(0, n);
1093 r->ops->misc(r, DSARAND_GETSEED, PyString_AS_STRING(rc));
1094 return (rc);
1095}
1096
1097static PyGetSetDef dsarand_pygetset[] = {
1098#define GETSETNAME(op, name) dr##op##_##name
1099 GET (seed, "R.seed -> current generator seed")
1100#undef GETSETNAME
1101 { 0 }
1102};
1103
1104static PyTypeObject dsarand_pytype_skel = {
6d4db0bf 1105 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1106 "DSARand", /* @tp_name@ */
d7ab1bab 1107 sizeof(grand_pyobj), /* @tp_basicsize@ */
1108 0, /* @tp_itemsize@ */
1109
1110 grand_pydealloc, /* @tp_dealloc@ */
1111 0, /* @tp_print@ */
1112 0, /* @tp_getattr@ */
1113 0, /* @tp_setattr@ */
1114 0, /* @tp_compare@ */
1115 0, /* @tp_repr@ */
1116 0, /* @tp_as_number@ */
1117 0, /* @tp_as_sequence@ */
1118 0, /* @tp_as_mapping@ */
1119 0, /* @tp_hash@ */
1120 0, /* @tp_call@ */
1121 0, /* @tp_str@ */
1122 0, /* @tp_getattro@ */
1123 0, /* @tp_setattro@ */
1124 0, /* @tp_as_buffer@ */
1125 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1126 Py_TPFLAGS_BASETYPE,
1127
1128 /* @tp_doc@ */
1129"Pseudorandom number generator for constructing DSA parameters.",
1130
1131 0, /* @tp_traverse@ */
1132 0, /* @tp_clear@ */
1133 0, /* @tp_richcompare@ */
1134 0, /* @tp_weaklistoffset@ */
1135 0, /* @tp_iter@ */
963a6148 1136 0, /* @tp_iternext@ */
d7ab1bab 1137 0, /* @tp_methods@ */
1138 0, /* @tp_members@ */
1139 dsarand_pygetset, /* @tp_getset@ */
1140 0, /* @tp_base@ */
1141 0, /* @tp_dict@ */
1142 0, /* @tp_descr_get@ */
1143 0, /* @tp_descr_set@ */
1144 0, /* @tp_dictoffset@ */
1145 0, /* @tp_init@ */
1146 PyType_GenericAlloc, /* @tp_alloc@ */
1147 dsarand_pynew, /* @tp_new@ */
3aa33042 1148 0, /* @tp_free@ */
d7ab1bab 1149 0 /* @tp_is_gc@ */
1150};
1151
1152/*----- Blum-Blum-Shub generator ------------------------------------------*/
1153
1154static PyObject *bbs_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1155{
1156 mp *n = 0, *x = MP_TWO;
1157 PyObject *rc = 0;
1158 char *kwlist[] = { "n", "x", 0 };
1159
1160 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", kwlist,
1161 convmp, &n, convmp, &x))
1162 goto end;
1163 rc = grand_dopywrap(ty, bbs_rand(n, x), f_freeme);
1164end:
1165 mp_drop(n);
1166 mp_drop(x);
1167 return (rc);
1168}
1169
1170static PyObject *bbsmeth_step(PyObject *me, PyObject *arg)
1171{
1172 grand *r = GRAND_R(me); if (!PyArg_ParseTuple(arg, ":step")) return (0);
1173 r->ops->misc(r, BBS_STEP); RETURN_ME;
1174}
1175
1176static PyObject *bbsmeth_bits(PyObject *me, PyObject *arg)
1177{
1178 grand *r = GRAND_R(me); unsigned n; uint32 w;
1179 if (!PyArg_ParseTuple(arg, "O&:bits", convuint, &n)) goto end;
1180 if (n > 32) VALERR("can't get more than 32 bits");
fbca05a1 1181 r->ops->misc(r, BBS_BITS, n, &w); return (getulong(w));
d7ab1bab 1182end:
1183 return (0);
1184}
1185
1186static PyObject *bbsmeth_wrap(PyObject *me, PyObject *arg)
1187{
1188 grand *r = GRAND_R(me); if (!PyArg_ParseTuple(arg, ":wrap")) return (0);
1189 r->ops->misc(r, BBS_WRAP); RETURN_ME;
1190}
1191
1192static PyObject *bbsget_n(PyObject *me, void *hunoz)
1193{
1194 mp *x = MP_NEW; grand *r = GRAND_R(me);
1195 r->ops->misc(r, BBS_MOD, &x); return (mp_pywrap(x));
1196}
1197
1198static PyObject *bbsget_x(PyObject *me, void *hunoz)
1199{
1200 mp *x = MP_NEW; grand *r = GRAND_R(me);
1201 r->ops->misc(r, BBS_STATE, &x); return (mp_pywrap(x));
1202}
1203
1204static int bbsset_x(PyObject *me, PyObject *val, void *hunoz)
1205{
f368b46e 1206 mp *x = 0; grand *r = GRAND_R(me); int rc = -1; if (!x) NIERR("__del__");
d7ab1bab 1207 if ((x = getmp(val)) == 0) goto end; r->ops->misc(r, BBS_SET, x); rc = 0;
1208 end: mp_drop(x); return (rc);
1209}
1210
1211static PyObject *bbsget_stepsz(PyObject *me, void *hunoz)
1212{
1213 grand *r = GRAND_R(me);
1214 return (PyInt_FromLong(r->ops->misc(r, BBS_STEPSZ)));
1215}
1216
1217static PyMethodDef bbs_pymethods[] = {
1218#define METHNAME(name) bbsmeth_##name
1219 METH (step, "R.step(): steps the generator (not useful)")
1220 METH (bits, "R.bits(N) -> W: returns N bits (<= 32) from the generator")
1221 METH (wrap, "R.wrap(): flushes unused bits in internal buffer")
1222#undef METHNAME
1223 { 0 }
1224};
1225
1226static PyGetSetDef bbs_pygetset[] = {
1227#define GETSETNAME(op, name) bbs##op##_##name
1228 GET (n, "R.n -> Blum modulus")
1229 GETSET(x, "R.x -> current seed value")
1230 GET (stepsz, "R.stepsz -> number of bits generated per step")
1231#undef GETSETNAME
1232 { 0 }
1233};
1234
1235static PyTypeObject bbs_pytype_skel = {
6d4db0bf 1236 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1237 "BlumBlumShub", /* @tp_name@ */
d7ab1bab 1238 sizeof(grand_pyobj), /* @tp_basicsize@ */
1239 0, /* @tp_itemsize@ */
1240
1241 grand_pydealloc, /* @tp_dealloc@ */
1242 0, /* @tp_print@ */
1243 0, /* @tp_getattr@ */
1244 0, /* @tp_setattr@ */
1245 0, /* @tp_compare@ */
1246 0, /* @tp_repr@ */
1247 0, /* @tp_as_number@ */
1248 0, /* @tp_as_sequence@ */
1249 0, /* @tp_as_mapping@ */
1250 0, /* @tp_hash@ */
1251 0, /* @tp_call@ */
1252 0, /* @tp_str@ */
1253 0, /* @tp_getattro@ */
1254 0, /* @tp_setattro@ */
1255 0, /* @tp_as_buffer@ */
1256 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1257 Py_TPFLAGS_BASETYPE,
1258
1259 /* @tp_doc@ */
1260"Blum-Blum-Shub strong pseudorandom number generator.",
1261
1262 0, /* @tp_traverse@ */
1263 0, /* @tp_clear@ */
1264 0, /* @tp_richcompare@ */
1265 0, /* @tp_weaklistoffset@ */
1266 0, /* @tp_iter@ */
963a6148 1267 0, /* @tp_iternext@ */
d7ab1bab 1268 bbs_pymethods, /* @tp_methods@ */
1269 0, /* @tp_members@ */
1270 bbs_pygetset, /* @tp_getset@ */
1271 0, /* @tp_base@ */
1272 0, /* @tp_dict@ */
1273 0, /* @tp_descr_get@ */
1274 0, /* @tp_descr_set@ */
1275 0, /* @tp_dictoffset@ */
1276 0, /* @tp_init@ */
1277 PyType_GenericAlloc, /* @tp_alloc@ */
1278 bbs_pynew, /* @tp_new@ */
3aa33042 1279 0, /* @tp_free@ */
d7ab1bab 1280 0 /* @tp_is_gc@ */
1281};
1282
1283typedef struct bbspriv_pyobj {
1284 grand_pyobj gr;
1285 bbs_priv bp;
1286} bbspriv_pyobj;
1287
1288#define BBSPRIV_BP(o) (&((bbspriv_pyobj *)(o))->bp)
1289
1290static PyObject *bbspriv_pynew(PyTypeObject *ty,
1291 PyObject *arg, PyObject *kw)
1292{
1293 mp *p = 0, *q = 0, *n = 0, *x = MP_TWO;
1294 bbspriv_pyobj *rc = 0;
1295 char *kwlist[] = { "n", "p", "q", "seed", 0 };
1296
1297 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&O&O&O&:new", kwlist,
1298 convmp, &n, convmp, &p, convmp, &q,
1299 convmp, &x))
1300 goto end;
1301 if (!n + !p + !q > 1) VALERR("must specify at least two of n, p, q");
1302 if (!n) n = mp_mul(MP_NEW, p, q);
1303 else if (!p) mp_div(&p, 0, n, q);
1304 else if (!q) mp_div(&q, 0, n, p);
1305 rc = (bbspriv_pyobj *)ty->tp_alloc(ty, 0);
1306 rc->gr.r = bbs_rand(n, x);
1307 rc->gr.f = f_freeme;
1308 rc->bp.p = MP_COPY(p);
1309 rc->bp.q = MP_COPY(q);
1310 rc->bp.n = MP_COPY(n);
1311end:
1312 mp_drop(p); mp_drop(q); mp_drop(n); mp_drop(x);
1313 return ((PyObject *)rc);
1314}
1315
1316static PyObject *meth__BBSPriv_generate(PyObject *me,
1317 PyObject *arg, PyObject *kw)
1318{
1319 bbs_priv bp = { 0 };
1320 mp *x = MP_TWO;
1321 pgev evt = { 0 };
1322 unsigned nbits, n = 0;
1323 grand *r = &rand_global;
1324 char *kwlist[] = { "class", "nbits", "event", "rng", "nsteps", "seed", 0 };
1325 bbspriv_pyobj *rc = 0;
1326
1327 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&|O&O&O&O&:generate", kwlist,
1328 &me, convuint, &nbits, convpgev, &evt,
1329 convgrand, &r, convuint, &n, convmp, &x))
1330 goto end;
1331 if (bbs_gen(&bp, nbits, r, n, evt.proc, evt.ctx))
1332 VALERR("prime genration failed");
1333 rc = PyObject_New(bbspriv_pyobj, bbspriv_pytype);
1334 rc->gr.r = bbs_rand(bp.n, x);
1335 rc->gr.f = f_freeme;
1336 rc->bp.p = MP_COPY(bp.p);
1337 rc->bp.q = MP_COPY(bp.q);
1338 rc->bp.n = MP_COPY(bp.n);
1339end:
1340 mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n); mp_drop(x);
b2687a0a 1341 return ((PyObject *)rc);
d7ab1bab 1342}
1343
1344static void bbspriv_pydealloc(PyObject *me)
1345{
1346 bbs_priv *bp = BBSPRIV_BP(me);
1347 mp_drop(bp->n);
1348 mp_drop(bp->p);
1349 mp_drop(bp->q);
1350 grand_pydealloc(me);
1351}
1352
1353static PyObject *bpmeth_ff(PyObject *me, PyObject *arg)
1354{
1355 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1356 if (!PyArg_ParseTuple(arg, "O&:ff", convmp, &n)) return (0);
1357 r->ops->misc(r, BBS_FF, bp, n); RETURN_ME;
1358}
1359
1360static PyObject *bpmeth_rew(PyObject *me, PyObject *arg)
1361{
1362 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1363 if (!PyArg_ParseTuple(arg, "O&:rew", convmp, &n)) return (0);
1364 r->ops->misc(r, BBS_REW, bp, n); RETURN_ME;
1365}
1366
1367static PyObject *bpget_n(PyObject *me, void *hunoz)
1368 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->n))); }
1369
1370static PyObject *bpget_p(PyObject *me, void *hunoz)
1371 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->p))); }
1372
1373static PyObject *bpget_q(PyObject *me, void *hunoz)
1374 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->q))); }
1375
1376static PyMethodDef bbspriv_pymethods[] = {
1377#define METHNAME(name) bpmeth_##name
1378 METH (ff, "R.ff(N): fast-forward N places")
1379 METH (rew, "R.rew(N): rewind N places")
1380#undef METHNAME
1381 { 0 }
1382};
1383
1384static PyGetSetDef bbspriv_pygetset[] = {
1385#define GETSETNAME(op, name) bp##op##_##name
b2687a0a
MW		 1386 GET (n, "R.n -> Blum modulus")
1387 GET (p, "R.p -> one of the factors of the modulus")
1388 GET (q, "R.q -> one of the factors of the modulus")
d7ab1bab 1389#undef GETSETNAME
1390 { 0 }
1391};
1392
1393static PyTypeObject bbspriv_pytype_skel = {
6d4db0bf 1394 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1395 "BBSPriv", /* @tp_name@ */
d7ab1bab 1396 sizeof(bbspriv_pyobj), /* @tp_basicsize@ */
1397 0, /* @tp_itemsize@ */
1398
1399 bbspriv_pydealloc, /* @tp_dealloc@ */
1400 0, /* @tp_print@ */
1401 0, /* @tp_getattr@ */
1402 0, /* @tp_setattr@ */
1403 0, /* @tp_compare@ */
1404 0, /* @tp_repr@ */
1405 0, /* @tp_as_number@ */
1406 0, /* @tp_as_sequence@ */
1407 0, /* @tp_as_mapping@ */
1408 0, /* @tp_hash@ */
1409 0, /* @tp_call@ */
1410 0, /* @tp_str@ */
1411 0, /* @tp_getattro@ */
1412 0, /* @tp_setattro@ */
1413 0, /* @tp_as_buffer@ */
1414 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1415 Py_TPFLAGS_BASETYPE,
1416
1417 /* @tp_doc@ */
1418"Blum-Blum-Shub strong pseudorandom generator, with private key.",
1419
1420 0, /* @tp_traverse@ */
1421 0, /* @tp_clear@ */
1422 0, /* @tp_richcompare@ */
1423 0, /* @tp_weaklistoffset@ */
1424 0, /* @tp_iter@ */
963a6148 1425 0, /* @tp_iternext@ */
d7ab1bab 1426 bbspriv_pymethods, /* @tp_methods@ */
1427 0, /* @tp_members@ */
1428 bbspriv_pygetset, /* @tp_getset@ */
1429 0, /* @tp_base@ */
1430 0, /* @tp_dict@ */
1431 0, /* @tp_descr_get@ */
1432 0, /* @tp_descr_set@ */
1433 0, /* @tp_dictoffset@ */
1434 0, /* @tp_init@ */
1435 PyType_GenericAlloc, /* @tp_alloc@ */
1436 bbspriv_pynew, /* @tp_new@ */
3aa33042 1437 0, /* @tp_free@ */
d7ab1bab 1438 0 /* @tp_is_gc@ */
1439};
1440
1441/*----- Global stuff ------------------------------------------------------*/
1442
1443static PyMethodDef methods[] = {
1444#define METHNAME(name) meth_##name
1445 KWMETH(_BBSPriv_generate, "\
1446generate(NBITS, [event = pgen_nullev, rng = rand, nsteps = 0, seed = 2])")
1447#undef METHNAME
1448 { 0 }
1449};
1450
1451void rand_pyinit(void)
1452{
1453 INITTYPE(grand, root);
1454 INITTYPE(truerand, grand);
1455 INITTYPE(fibrand, grand);
1456 INITTYPE(lcrand, grand);
1457 INITTYPE(dsarand, grand);
1458 INITTYPE(bbs, grand);
1459 INITTYPE(bbspriv, bbs);
1460 INITTYPE(sslprf, grand);
1461 INITTYPE(tlsdx, grand);
1462 INITTYPE(tlsprf, grand);
850a4b48
MW		 1463 INITTYPE(gccrand, type);
1464 INITTYPE(gcrand, grand);
35e5469a 1465 INITTYPE(gclatinrand, gcrand);
d7ab1bab 1466 rand_noisesrc(RAND_GLOBAL, &noise_source);
1467 rand_seed(RAND_GLOBAL, 160);
1468 addmethods(methods);
1469}
1470
850a4b48
MW		 1471#define gccrand gccrand_info
1472GEN(gccrands, crand)
1473
d7ab1bab 1474void rand_pyinsert(PyObject *mod)
1475{
1476 INSERT("GRand", grand_pytype);
1477 INSERT("TrueRand", truerand_pytype);
1478 INSERT("LCRand", lcrand_pytype);
1479 INSERT("FibRand", fibrand_pytype);
1480 INSERT("SSLRand", sslprf_pytype);
1481 INSERT("TLSDataExpansion", tlsdx_pytype);
1482 INSERT("TLSPRF", tlsprf_pytype);
1483 INSERT("DSARand", dsarand_pytype);
1484 INSERT("BlumBlumShub", bbs_pytype);
1485 INSERT("BBSPriv", bbspriv_pytype);
850a4b48
MW		 1486 INSERT("GCCRand", gccrand_pytype);
1487 INSERT("GCRand", gcrand_pytype);
35e5469a 1488 INSERT("GCLatinRand", gclatinrand_pytype);
d7ab1bab 1489 rand_pyobj = grand_pywrap(&rand_global, 0); Py_INCREF(rand_pyobj);
850a4b48
MW		 1490 gccrands_dict = gccrands(); Py_INCREF(gccrands_dict);
1491 INSERT("gccrands", gccrands_dict);
d7ab1bab 1492 INSERT("rand", rand_pyobj);
1493}
1494
1495/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings