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[catacomb-python] / rand.c
1 /* -*-c-*-
2 *
3 * Random-number generators
4 *
5 * (c) 2004 Straylight/Edgeware
6 */
7
8 /*----- Licensing notice --------------------------------------------------*
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.
16 *
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.
21 *
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 PUBLIC_SYMBOLS;
31 #include "algorithms.h"
32 PRIVATE_SYMBOLS;
33
34 /*----- Main code ---------------------------------------------------------*/
35
36 PyTypeObject *grand_pytype;
37 static PyTypeObject *truerand_pytype;
38 static PyTypeObject *lcrand_pytype, *fibrand_pytype;
39 static PyTypeObject *dsarand_pytype, *bbs_pytype, *bbspriv_pytype;
40 static PyTypeObject *sslprf_pytype, *tlsdx_pytype, *tlsprf_pytype;
41 PyObject *rand_pyobj;
42
43 static PyObject *gccrands_dict;
44
45 static PyObject *grand_dopywrap(PyTypeObject *ty, grand *r, unsigned f)
46 {
47 grand_pyobj *g;
48
49 g = (grand_pyobj *)ty->tp_alloc(ty, 0);
50 g->r = r;
51 g->f = f;
52 return ((PyObject *)g);
53 }
54
55 PyObject *grand_pywrap(grand *r, unsigned f)
56 {
57 PyTypeObject *ty = grand_pytype;
58 PyObject *ob;
59
60 if (STRCMP(r->ops->name, ==, "rand")) ty = truerand_pytype;
61 else if (STRCMP(r->ops->name, ==, "lcrand")) ty = lcrand_pytype;
62 else if (STRCMP(r->ops->name, ==, "fibrand")) ty = fibrand_pytype;
63 else if (STRCMP(r->ops->name, ==, "dsarand")) ty = dsarand_pytype;
64 else if (STRCMP(r->ops->name, ==, "bbs")) ty = bbs_pytype;
65 else if (STRCMP(r->ops->name, ==, "sslprf")) ty = sslprf_pytype;
66 else if (STRCMP(r->ops->name, ==, "tlsdx")) ty = tlsdx_pytype;
67 else if (STRCMP(r->ops->name, ==, "tlsprf")) ty = tlsprf_pytype;
68 else if ((ob = PyMapping_GetItemString
69 (gccrands_dict, (/*unconst*/ char *)r->ops->name)) != 0)
70 ty = (PyTypeObject *)ob;
71 return (grand_dopywrap(ty, r, f));
72 }
73
74 CONVFUNC(grand, grand *, GRAND_R)
75
76 static int grand_check(PyObject *me)
77 {
78 if (!GRAND_R(me)) VALERR("random generator object is no longer valid");
79 return (0);
80 end:
81 return (-1);
82 }
83
84 static PyObject *grmeth_byte(PyObject *me)
85 {
86 if (grand_check(me)) return (0);
87 return (PyInt_FromLong(grand_byte(GRAND_R(me))));
88 }
89
90 static PyObject *grmeth_word(PyObject *me)
91 {
92 if (grand_check(me)) return (0);
93 return (getulong(grand_word(GRAND_R(me))));
94 }
95
96 static PyObject *grmeth_range(PyObject *me, PyObject *arg)
97 {
98 PyObject *m;
99 mp *x = 0;
100 mp *y = 0;
101
102 if (!PyArg_ParseTuple(arg, "O:range", &m)) return (0);
103 if (grand_check(me)) return (0);
104 if (PyInt_Check(m)) {
105 long mm = PyInt_AsLong(m);
106 if (mm == -1 && PyErr_Occurred()) PyErr_Clear();
107 else if (mm <= 0) goto notpos;
108 else if (mm <= 0xffffffff)
109 return (PyInt_FromLong(grand_range(GRAND_R(me), mm)));
110 }
111 if ((x = getmp(m)) == 0) goto end;
112 if (!MP_POSP(x)) goto notpos;
113 y = mprand_range(MP_NEW, x, GRAND_R(me), 0);
114 MP_DROP(x);
115 return (mp_pywrap(y));
116 notpos:
117 VALERR("range must be strictly positive");
118 end:
119 if (x) MP_DROP(x);
120 return (0);
121 }
122
123 static PyObject *grmeth_mp(PyObject *me, PyObject *arg, PyObject *kw)
124 {
125 size_t l;
126 mpw o = 0;
127 static const char *const kwlist[] = { "bits", "or", 0 };
128
129 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:mp", KWLIST,
130 convszt, &l, convmpw, &o))
131 goto end;
132 if (grand_check(me)) return (0);
133 if (l < MPW_BITS && (o >> l)) VALERR("or mask too large");
134 return (mp_pywrap(mprand(MP_NEW, l, GRAND_R(me), o)));
135 end:
136 return (0);
137 }
138
139 static PyObject *grmeth_block(PyObject *me, PyObject *arg)
140 {
141 unsigned long n;
142 PyObject *rc = 0;
143
144 if (!PyArg_ParseTuple(arg, "O&:block", convulong, &n)) goto end;
145 if (grand_check(me)) return (0);
146 rc = bytestring_pywrap(0, n);
147 grand_fill(GRAND_R(me), BIN_PTR(rc), n);
148 end:
149 return (rc);
150 }
151
152 static int checkop(grand *r, unsigned op, const char *what)
153 {
154 if (r->ops->misc(r, GRAND_CHECK, op)) return (0);
155 PyErr_Format(PyExc_TypeError, "operation %s not supported", what);
156 return (-1);
157 }
158
159 static PyObject *grmeth_seedint(PyObject *me, PyObject *arg)
160 {
161 int i;
162 grand *r = GRAND_R(me);
163 if (!PyArg_ParseTuple(arg, "i:seedint", &i) ||
164 grand_check(me) || checkop(r, GRAND_SEEDINT, "seedint"))
165 goto end;
166 r->ops->misc(r, GRAND_SEEDINT, i);
167 RETURN_ME;
168 end:
169 return (0);
170 }
171
172 static PyObject *grmeth_seedword(PyObject *me, PyObject *arg)
173 {
174 uint32 u;
175 grand *r = GRAND_R(me);
176 if (!PyArg_ParseTuple(arg, "O&:seedword", convu32, &u) ||
177 grand_check(me) || checkop(r, GRAND_SEEDUINT32, "seedword"))
178 goto end;
179 r->ops->misc(r, GRAND_SEEDUINT32, u);
180 RETURN_ME;
181 end:
182 return (0);
183 }
184
185 static PyObject *grmeth_seedblock(PyObject *me, PyObject *arg)
186 {
187 struct bin in;
188 grand *r = GRAND_R(me);
189 if (!PyArg_ParseTuple(arg, "O&:seedblock", convbin, &in) ||
190 grand_check(me) || checkop(r, GRAND_SEEDBLOCK, "seedblock"))
191 goto end;
192 r->ops->misc(r, GRAND_SEEDBLOCK, in.p, (size_t)in.sz);
193 RETURN_ME;
194 end:
195 return (0);
196 }
197
198 static PyObject *grmeth_seedmp(PyObject *me, PyObject *arg)
199 {
200 PyObject *x;
201 mp *xx;
202 grand *r = GRAND_R(me);
203 if (!PyArg_ParseTuple(arg, "O:seedmp", &x) ||
204 grand_check(me) || checkop(r, GRAND_SEEDMP, "seedmp") ||
205 (xx = getmp(x)) == 0)
206 goto end;
207 r->ops->misc(r, GRAND_SEEDMP, xx);
208 MP_DROP(xx);
209 RETURN_ME;
210 end:
211 return (0);
212 }
213
214 static PyObject *grmeth_seedrand(PyObject *me, PyObject *arg, PyObject *kw)
215 {
216 static const char *const kwlist[] = { "rng", 0 };
217 grand *r = GRAND_R(me);
218 grand *rr = &rand_global;
219 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:seedrand", KWLIST,
220 convgrand, &rr) ||
221 grand_check(me) || checkop(r, GRAND_SEEDRAND, "seedrand"))
222 goto end;
223 r->ops->misc(r, GRAND_SEEDRAND, rr);
224 RETURN_ME;
225 end:
226 return (0);
227 }
228
229 static PyObject *grmeth_mask(PyObject *me, PyObject *arg)
230 {
231 grand *r = GRAND_R(me);
232 struct bin in;
233 const octet *p; size_t n;
234 octet *q;
235 PyObject *rc;
236
237 if (!PyArg_ParseTuple(arg, "O&:mask", convbin, &in)) return (0);
238 if (grand_check(me)) return (0);
239 rc = bytestring_pywrap(0, in.sz);
240 q = (octet *)BIN_PTR(rc);
241 GR_FILL(r, q, in.sz);
242 p = in.p; n = in.sz; while (n--) *q++ ^= *p++;
243 return (rc);
244 }
245
246 static void grand_pydealloc(PyObject *me)
247 {
248 grand_pyobj *g = (grand_pyobj *)me;
249 if ((g->f & f_freeme) && g->r) GR_DESTROY(g->r);
250 FREEOBJ(me);
251 }
252
253 static PyObject *grget_name(PyObject *me, void *hunoz)
254 { return (grand_check(me) ? 0 : TEXT_FROMSTR(GRAND_R(me)->ops->name)); }
255
256 static PyObject *grget_cryptop(PyObject *me, void *hunoz)
257 { return (grand_check(me) ? 0 : getbool(GRAND_R(me)->ops->f & GRAND_CRYPTO)); }
258
259 static const PyGetSetDef grand_pygetset[] = {
260 #define GETSETNAME(op, name) gr##op##_##name
261 GET (name, "R.name -> name of this kind of generator")
262 GET (cryptop, "R.cryptop -> flag: cryptographically strong?")
263 #undef GETSETNAME
264 { 0 }
265 };
266
267 static const PyMethodDef grand_pymethods[] = {
268 #define METHNAME(name) grmeth_##name
269 NAMETH(byte, "R.byte() -> BYTE")
270 NAMETH(word, "R.word() -> WORD")
271 METH (block, "R.block(N) -> STRING")
272 KWMETH(mp, "R.mp(bits, [or = 0]) -> MP")
273 METH (range, "R.range(MAX) -> INT")
274 METH (mask, "R.mask(STR) -> STR")
275 METH (seedint, "R.seedint(I)")
276 METH (seedword, "R.seedword(I)")
277 METH (seedblock, "R.seedblock(BYTES)")
278 METH (seedmp, "R.seedmp(X)")
279 KWMETH(seedrand, "R.seedrand(RR)")
280 #undef METHNAME
281 { 0 }
282 };
283
284 static const PyTypeObject grand_pytype_skel = {
285 PyVarObject_HEAD_INIT(0, 0) /* Header */
286 "GRand", /* @tp_name@ */
287 sizeof(grand_pyobj), /* @tp_basicsize@ */
288 0, /* @tp_itemsize@ */
289
290 grand_pydealloc, /* @tp_dealloc@ */
291 0, /* @tp_print@ */
292 0, /* @tp_getattr@ */
293 0, /* @tp_setattr@ */
294 0, /* @tp_compare@ */
295 0, /* @tp_repr@ */
296 0, /* @tp_as_number@ */
297 0, /* @tp_as_sequence@ */
298 0, /* @tp_as_mapping@ */
299 0, /* @tp_hash@ */
300 0, /* @tp_call@ */
301 0, /* @tp_str@ */
302 0, /* @tp_getattro@ */
303 0, /* @tp_setattro@ */
304 0, /* @tp_as_buffer@ */
305 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
306 Py_TPFLAGS_BASETYPE,
307
308 /* @tp_doc@ */
309 "Generic random number source.",
310
311 0, /* @tp_traverse@ */
312 0, /* @tp_clear@ */
313 0, /* @tp_richcompare@ */
314 0, /* @tp_weaklistoffset@ */
315 0, /* @tp_iter@ */
316 0, /* @tp_iternext@ */
317 PYMETHODS(grand), /* @tp_methods@ */
318 0, /* @tp_members@ */
319 PYGETSET(grand), /* @tp_getset@ */
320 0, /* @tp_base@ */
321 0, /* @tp_dict@ */
322 0, /* @tp_descr_get@ */
323 0, /* @tp_descr_set@ */
324 0, /* @tp_dictoffset@ */
325 0, /* @tp_init@ */
326 PyType_GenericAlloc, /* @tp_alloc@ */
327 abstract_pynew, /* @tp_new@ */
328 0, /* @tp_free@ */
329 0 /* @tp_is_gc@ */
330 };
331
332 static PyObject *lcrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
333 {
334 uint32 n = 0;
335 static const char *const kwlist[] = { "seed", 0 };
336 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convu32, &n))
337 return (0);
338 return (grand_dopywrap(lcrand_pytype, lcrand_create(n), f_freeme));
339 }
340
341 static const PyTypeObject lcrand_pytype_skel = {
342 PyVarObject_HEAD_INIT(0, 0) /* Header */
343 "LCRand", /* @tp_name@ */
344 sizeof(grand_pyobj), /* @tp_basicsize@ */
345 0, /* @tp_itemsize@ */
346
347 grand_pydealloc, /* @tp_dealloc@ */
348 0, /* @tp_print@ */
349 0, /* @tp_getattr@ */
350 0, /* @tp_setattr@ */
351 0, /* @tp_compare@ */
352 0, /* @tp_repr@ */
353 0, /* @tp_as_number@ */
354 0, /* @tp_as_sequence@ */
355 0, /* @tp_as_mapping@ */
356 0, /* @tp_hash@ */
357 0, /* @tp_call@ */
358 0, /* @tp_str@ */
359 0, /* @tp_getattro@ */
360 0, /* @tp_setattro@ */
361 0, /* @tp_as_buffer@ */
362 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
363 Py_TPFLAGS_BASETYPE,
364
365 /* @tp_doc@ */
366 "LCRand([seed = 0]): linear congruential generator.",
367
368 0, /* @tp_traverse@ */
369 0, /* @tp_clear@ */
370 0, /* @tp_richcompare@ */
371 0, /* @tp_weaklistoffset@ */
372 0, /* @tp_iter@ */
373 0, /* @tp_iternext@ */
374 0, /* @tp_methods@ */
375 0, /* @tp_members@ */
376 0, /* @tp_getset@ */
377 0, /* @tp_base@ */
378 0, /* @tp_dict@ */
379 0, /* @tp_descr_get@ */
380 0, /* @tp_descr_set@ */
381 0, /* @tp_dictoffset@ */
382 0, /* @tp_init@ */
383 PyType_GenericAlloc, /* @tp_alloc@ */
384 lcrand_pynew, /* @tp_new@ */
385 0, /* @tp_free@ */
386 0 /* @tp_is_gc@ */
387 };
388
389 static PyObject *fibrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
390 {
391 uint32 n = 0;
392 static const char *const kwlist[] = { "seed", 0 };
393 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convu32, &n))
394 return (0);
395 return (grand_dopywrap(fibrand_pytype, fibrand_create(n), f_freeme));
396 }
397
398 static const PyTypeObject fibrand_pytype_skel = {
399 PyVarObject_HEAD_INIT(0, 0) /* Header */
400 "FibRand", /* @tp_name@ */
401 sizeof(grand_pyobj), /* @tp_basicsize@ */
402 0, /* @tp_itemsize@ */
403
404 grand_pydealloc, /* @tp_dealloc@ */
405 0, /* @tp_print@ */
406 0, /* @tp_getattr@ */
407 0, /* @tp_setattr@ */
408 0, /* @tp_compare@ */
409 0, /* @tp_repr@ */
410 0, /* @tp_as_number@ */
411 0, /* @tp_as_sequence@ */
412 0, /* @tp_as_mapping@ */
413 0, /* @tp_hash@ */
414 0, /* @tp_call@ */
415 0, /* @tp_str@ */
416 0, /* @tp_getattro@ */
417 0, /* @tp_setattro@ */
418 0, /* @tp_as_buffer@ */
419 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
420 Py_TPFLAGS_BASETYPE,
421
422 /* @tp_doc@ */
423 "FibRand([seed = 0]): Fibonacci generator.",
424
425 0, /* @tp_traverse@ */
426 0, /* @tp_clear@ */
427 0, /* @tp_richcompare@ */
428 0, /* @tp_weaklistoffset@ */
429 0, /* @tp_iter@ */
430 0, /* @tp_iternext@ */
431 0, /* @tp_methods@ */
432 0, /* @tp_members@ */
433 0, /* @tp_getset@ */
434 0, /* @tp_base@ */
435 0, /* @tp_dict@ */
436 0, /* @tp_descr_get@ */
437 0, /* @tp_descr_set@ */
438 0, /* @tp_dictoffset@ */
439 0, /* @tp_init@ */
440 PyType_GenericAlloc, /* @tp_alloc@ */
441 fibrand_pynew, /* @tp_new@ */
442 0, /* @tp_free@ */
443 0 /* @tp_is_gc@ */
444 };
445
446 /*----- True random generator ---------------------------------------------*/
447
448 static PyObject *trmeth_gate(PyObject *me)
449 { grand *r = GRAND_R(me); r->ops->misc(GRAND_R(me), RAND_GATE); RETURN_ME; }
450
451 static PyObject *trmeth_stretch(PyObject *me)
452 { grand *r = GRAND_R(me); r->ops->misc(r, RAND_STRETCH); RETURN_ME; }
453
454 static PyObject *trmeth_add(PyObject *me, PyObject *arg)
455 {
456 grand *r = GRAND_R(me);
457 struct bin in; unsigned goodbits;
458 if (!PyArg_ParseTuple(arg, "O&O&:add", convbin, &in, convuint, &goodbits))
459 return (0);
460 r->ops->misc(r, RAND_ADD, in.p, (size_t)in.sz, goodbits);
461 RETURN_ME;
462 }
463
464 static PyObject *trmeth_key(PyObject *me, PyObject *arg)
465 {
466 grand *r = GRAND_R(me);
467 struct bin k;
468 if (!PyArg_ParseTuple(arg, "O&:key", convbin, &k)) return (0);
469 r->ops->misc(r, RAND_KEY, k.p, (size_t)k.sz);
470 RETURN_ME;
471 }
472
473 static PyObject *trmeth_seed(PyObject *me, PyObject *arg)
474 {
475 grand *r = GRAND_R(me);
476 unsigned u;
477 if (!PyArg_ParseTuple(arg, "O&:seed", convuint, &u)) return (0);
478 if (u > RAND_IBITS) VALERR("pointlessly large");
479 r->ops->misc(r, RAND_SEED, u);
480 RETURN_ME;
481 end:
482 return (0);
483 }
484
485 static PyObject *trmeth_timer(PyObject *me)
486 { grand *r = GRAND_R(me); r->ops->misc(r, RAND_TIMER); RETURN_ME; }
487
488 static PyObject *truerand_pynew(PyTypeObject *ty,
489 PyObject *arg, PyObject *kw)
490 {
491 static const char *const kwlist[] = { 0 };
492 grand *r;
493 PyObject *rc = 0;
494 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST)) goto end;
495 r = rand_create();
496 r->ops->misc(r, RAND_NOISESRC, &noise_source);
497 r->ops->misc(r, RAND_SEED, 160);
498 rc = grand_dopywrap(ty, r, f_freeme);
499 end:
500 return (rc);
501 }
502
503 static const PyMethodDef truerand_pymethods[] = {
504 #define METHNAME(name) trmeth_##name
505 NAMETH(gate, "R.gate()")
506 NAMETH(stretch, "R.stretch()")
507 METH (key, "R.key(BYTES)")
508 METH (seed, "R.seed(NBITS)")
509 METH (add, "R.add(BYTES, GOODBITS")
510 NAMETH(timer, "R.timer()")
511 #undef METHNAME
512 { 0 }
513 };
514
515 static PyObject *trget_goodbits(PyObject *me, void *hunoz)
516 {
517 grand *r = GRAND_R(me);
518 return (PyInt_FromLong(r->ops->misc(r, RAND_GOODBITS)));
519 }
520
521 static const PyGetSetDef truerand_pygetset[] = {
522 #define GETSETNAME(op, name) tr##op##_##name
523 GET (goodbits, "R.goodbits -> good bits of entropy remaining")
524 #undef GETSETNAME
525 { 0 }
526 };
527
528 static const PyTypeObject truerand_pytype_skel = {
529 PyVarObject_HEAD_INIT(0, 0) /* Header */
530 "TrueRand", /* @tp_name@ */
531 sizeof(grand_pyobj), /* @tp_basicsize@ */
532 0, /* @tp_itemsize@ */
533
534 grand_pydealloc, /* @tp_dealloc@ */
535 0, /* @tp_print@ */
536 0, /* @tp_getattr@ */
537 0, /* @tp_setattr@ */
538 0, /* @tp_compare@ */
539 0, /* @tp_repr@ */
540 0, /* @tp_as_number@ */
541 0, /* @tp_as_sequence@ */
542 0, /* @tp_as_mapping@ */
543 0, /* @tp_hash@ */
544 0, /* @tp_call@ */
545 0, /* @tp_str@ */
546 0, /* @tp_getattro@ */
547 0, /* @tp_setattro@ */
548 0, /* @tp_as_buffer@ */
549 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
550 Py_TPFLAGS_BASETYPE,
551
552 /* @tp_doc@ */
553 "TrueRand(): true random number source.",
554
555 0, /* @tp_traverse@ */
556 0, /* @tp_clear@ */
557 0, /* @tp_richcompare@ */
558 0, /* @tp_weaklistoffset@ */
559 0, /* @tp_iter@ */
560 0, /* @tp_iternext@ */
561 PYMETHODS(truerand), /* @tp_methods@ */
562 0, /* @tp_members@ */
563 PYGETSET(truerand), /* @tp_getset@ */
564 0, /* @tp_base@ */
565 0, /* @tp_dict@ */
566 0, /* @tp_descr_get@ */
567 0, /* @tp_descr_set@ */
568 0, /* @tp_dictoffset@ */
569 0, /* @tp_init@ */
570 PyType_GenericAlloc, /* @tp_alloc@ */
571 truerand_pynew, /* @tp_new@ */
572 0, /* @tp_free@ */
573 0 /* @tp_is_gc@ */
574 };
575
576 /*----- Generators from symmetric encryption algorithms -------------------*/
577
578 static PyTypeObject *gccrand_pytype, *gcrand_pytype, *gclatinrand_pytype;
579
580 typedef grand *gcrand_func(const void *, size_t sz);
581 typedef grand *gcirand_func(const void *, size_t sz, uint32);
582 typedef grand *gcnrand_func(const void *, size_t sz, const void *);
583 typedef grand *gcshakerand_func(const void *, size_t,
584 const void *, size_t,
585 const void *, size_t);
586 typedef grand *gcshafuncrand_func(const void *, size_t,
587 const void *, size_t);
588 typedef grand *gckmacrand_func(const void *, size_t, const void *, size_t);
589 typedef struct gccrand_info {
590 const char *name;
591 const octet *keysz;
592 unsigned f;
593 size_t noncesz;
594 gcrand_func *func;
595 } gccrand_info;
596
597 #define RNGF_MASK 255u
598
599 enum {
600 RNG_PLAIN = 0,
601 RNG_SEAL,
602 RNG_LATIN,
603 RNG_SHAKE,
604 RNG_KMAC
605 };
606
607 typedef struct gccrand_pyobj {
608 PyHeapTypeObject ty;
609 const gccrand_info *info;
610 } gccrand_pyobj;
611 #define GCCRAND_INFO(o) (((gccrand_pyobj *)(o))->info)
612
613 #define GCCRAND_DEF(name, ksz, func, f, nsz) \
614 static const gccrand_info func##_info = \
615 { name, ksz, f, nsz, (gcrand_func *)func };
616 RNGS(GCCRAND_DEF)
617
618 static const gccrand_info *const gcrandtab[] = {
619 #define GCCRAND_ENTRY(name, ksz, func, f, nsz) &func##_info,
620 RNGS(GCCRAND_ENTRY)
621 0
622 };
623
624 static PyObject *gcrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
625 {
626 const gccrand_info *info = GCCRAND_INFO(ty);
627 static const char *const kwlist[] = { "key", 0 };
628 struct bin k;
629
630 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
631 goto end;
632 if (keysz(k.sz, info->keysz) != k.sz) VALERR("bad key length");
633 return (grand_dopywrap(ty, info->func(k.p, k.sz), f_freeme));
634 end:
635 return (0);
636 }
637
638 static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
639 {
640 const gccrand_info *info = GCCRAND_INFO(ty);
641 uint32 i = 0;
642 static const char *const kwlist[] = { "key", "i", 0 };
643 struct bin k;
644
645 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
646 convbin, &k, convu32, &i))
647 goto end;
648 if (keysz(k.sz, info->keysz) != k.sz) VALERR("bad key length");
649 return (grand_dopywrap(ty,
650 ((gcirand_func *)info->func)(k.p, k.sz, i),
651 f_freeme));
652 end:
653 return (0);
654 }
655
656 static PyObject *gcnrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
657 {
658 const gccrand_info *info = GCCRAND_INFO(ty);
659 static const char *const kwlist[] = { "key", "nonce", 0 };
660 static const octet zn[24] = { 0 };
661 struct bin k, n;
662
663 n.p = zn; n.sz = info->noncesz; assert(info->noncesz <= sizeof(zn));
664 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
665 convbin, &k, convbin, &n))
666 goto end;
667 if (keysz(k.sz, info->keysz) != k.sz) VALERR("bad key length");
668 if (n.sz != info->noncesz) VALERR("bad nonce length");
669 return (grand_dopywrap(ty,
670 ((gcnrand_func *)info->func)(k.p, k.sz, n.p),
671 f_freeme));
672 end:
673 return (0);
674 }
675
676 static PyObject *gcshakyrand_pynew(PyTypeObject *ty,
677 PyObject *arg, PyObject *kw)
678 {
679 const gccrand_info *info = GCCRAND_INFO(ty);
680 static const char
681 *const kwlist_shake[] = { "key", "func", "perso", 0 },
682 *const kwlist_func[] = { "key", "perso", 0 };
683 struct bin k, f = { 0, 0 }, p = { 0, 0 };
684
685 if ((info->f&RNGF_MASK) == RNG_SHAKE
686 ? !PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&O&:new",
687 (/*unconst*/ char **)kwlist_shake,
688 convbin, &k,
689 convbin, &f, convbin, &p)
690 : !PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new",
691 (/*unconst*/ char **)kwlist_func,
692 convbin, &k, convbin, &p))
693 goto end;
694 if (keysz(k.sz, info->keysz) != k.sz) VALERR("bad key length");
695 return (grand_dopywrap(ty,
696 (info->f&RNGF_MASK) == RNG_SHAKE
697 ? ((gcshakerand_func *)info->func)(f.p, f.sz,
698 p.p, p.sz,
699 k.p, k.sz)
700 : ((gcshafuncrand_func *)info->func)(p.p, p.sz,
701 k.p, k.sz),
702 f_freeme));
703 end:
704 return (0);
705 }
706
707 static PyObject *gccrand_pywrap(const gccrand_info *info)
708 {
709 gccrand_pyobj *g = newtype(gccrand_pytype, 0, info->name);
710 g->info = info;
711 g->ty.ht_type.tp_basicsize = sizeof(grand_pyobj);
712 switch (info->f&RNGF_MASK) {
713 case RNG_LATIN: g->ty.ht_type.tp_base = gclatinrand_pytype; break;
714 default: g->ty.ht_type.tp_base = gcrand_pytype; break;
715 }
716 Py_INCREF(g->ty.ht_type.tp_base);
717 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
718 Py_TPFLAGS_BASETYPE |
719 Py_TPFLAGS_HEAPTYPE);
720 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
721 g->ty.ht_type.tp_free = 0;
722 switch (info->f&RNGF_MASK) {
723 case RNG_LATIN: g->ty.ht_type.tp_new = gcnrand_pynew; break;
724 case RNG_SEAL: g->ty.ht_type.tp_new = gcirand_pynew; break;
725 case RNG_SHAKE: case RNG_KMAC:
726 g->ty.ht_type.tp_new = gcshakyrand_pynew; break;
727 default: g->ty.ht_type.tp_new = gcrand_pynew; break;
728 }
729 typeready(&g->ty.ht_type);
730 return ((PyObject *)g);
731 }
732
733 static PyObject *gccrget_name(PyObject *me, void *hunoz)
734 { return (TEXT_FROMSTR(GCCRAND_INFO(me)->name)); }
735 static PyObject *gccrget_keysz(PyObject *me, void *hunoz)
736 { return (keysz_pywrap(GCCRAND_INFO(me)->keysz)); }
737
738 static PyObject *gclrmeth_tell(PyObject *me)
739 {
740 grand *r = GRAND_R(me);
741 PyObject *rc = 0;
742 kludge64 off;
743
744 r->ops->misc(r, SALSA20_TELLU64, &off);
745 rc = getk64(off);
746 return (rc);
747 }
748
749 static PyObject *gclrmeth_seek(PyObject *me, PyObject *arg)
750 {
751 grand *r = GRAND_R(me);
752 kludge64 off;
753
754 if (!PyArg_ParseTuple(arg, "O&:seek", convk64, &off)) return (0);
755 r->ops->misc(r, SALSA20_SEEKU64, off);
756 RETURN_ME;
757 }
758
759 static const PyGetSetDef gccrand_pygetset[] = {
760 #define GETSETNAME(op, name) gccr##op##_##name
761 GET (keysz, "CR.keysz -> acceptable key sizes")
762 GET (name, "CR.name -> name of this kind of generator")
763 #undef GETSETNAME
764 { 0 }
765 };
766
767 static const PyMethodDef gclatinrand_pymethods[] = {
768 #define METHNAME(name) gclrmeth_##name
769 NAMETH(tell, "R.tell() -> OFF")
770 METH (seek, "R.seek(OFF)")
771 #undef METHNAME
772 { 0 }
773 };
774
775 static const PyTypeObject gccrand_pytype_skel = {
776 PyVarObject_HEAD_INIT(0, 0) /* Header */
777 "GCCRand", /* @tp_name@ */
778 sizeof(gccrand_pyobj), /* @tp_basicsize@ */
779 0, /* @tp_itemsize@ */
780
781 0, /* @tp_dealloc@ */
782 0, /* @tp_print@ */
783 0, /* @tp_getattr@ */
784 0, /* @tp_setattr@ */
785 0, /* @tp_compare@ */
786 0, /* @tp_repr@ */
787 0, /* @tp_as_number@ */
788 0, /* @tp_as_sequence@ */
789 0, /* @tp_as_mapping@ */
790 0, /* @tp_hash@ */
791 0, /* @tp_call@ */
792 0, /* @tp_str@ */
793 0, /* @tp_getattro@ */
794 0, /* @tp_setattro@ */
795 0, /* @tp_as_buffer@ */
796 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
797 Py_TPFLAGS_BASETYPE,
798
799 /* @tp_doc@ */
800 "Metaclass for symmetric crypto-based generators.",
801
802 0, /* @tp_traverse@ */
803 0, /* @tp_clear@ */
804 0, /* @tp_richcompare@ */
805 0, /* @tp_weaklistoffset@ */
806 0, /* @tp_iter@ */
807 0, /* @tp_iternext@ */
808 0, /* @tp_methods@ */
809 0, /* @tp_members@ */
810 PYGETSET(gccrand), /* @tp_getset@ */
811 0, /* @tp_base@ */
812 0, /* @tp_dict@ */
813 0, /* @tp_descr_get@ */
814 0, /* @tp_descr_set@ */
815 0, /* @tp_dictoffset@ */
816 0, /* @tp_init@ */
817 PyType_GenericAlloc, /* @tp_alloc@ */
818 abstract_pynew, /* @tp_new@ */
819 0, /* @tp_free@ */
820 0 /* @tp_is_gc@ */
821 };
822
823 static const PyTypeObject gcrand_pytype_skel = {
824 PyVarObject_HEAD_INIT(0, 0) /* Header */
825 "GCRand", /* @tp_name@ */
826 sizeof(grand_pyobj), /* @tp_basicsize@ */
827 0, /* @tp_itemsize@ */
828
829 grand_pydealloc, /* @tp_dealloc@ */
830 0, /* @tp_print@ */
831 0, /* @tp_getattr@ */
832 0, /* @tp_setattr@ */
833 0, /* @tp_compare@ */
834 0, /* @tp_repr@ */
835 0, /* @tp_as_number@ */
836 0, /* @tp_as_sequence@ */
837 0, /* @tp_as_mapping@ */
838 0, /* @tp_hash@ */
839 0, /* @tp_call@ */
840 0, /* @tp_str@ */
841 0, /* @tp_getattro@ */
842 0, /* @tp_setattro@ */
843 0, /* @tp_as_buffer@ */
844 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
845 Py_TPFLAGS_BASETYPE,
846
847 /* @tp_doc@ */
848 "Abstract base class for symmetric crypto-based generators.",
849
850 0, /* @tp_traverse@ */
851 0, /* @tp_clear@ */
852 0, /* @tp_richcompare@ */
853 0, /* @tp_weaklistoffset@ */
854 0, /* @tp_iter@ */
855 0, /* @tp_iternext@ */
856 0, /* @tp_methods@ */
857 0, /* @tp_members@ */
858 0, /* @tp_getset@ */
859 0, /* @tp_base@ */
860 0, /* @tp_dict@ */
861 0, /* @tp_descr_get@ */
862 0, /* @tp_descr_set@ */
863 0, /* @tp_dictoffset@ */
864 0, /* @tp_init@ */
865 PyType_GenericAlloc, /* @tp_alloc@ */
866 abstract_pynew, /* @tp_new@ */
867 0, /* @tp_free@ */
868 0 /* @tp_is_gc@ */
869 };
870
871 static const PyTypeObject gclatinrand_pytype_skel = {
872 PyVarObject_HEAD_INIT(0, 0) /* Header */
873 "GCLatinRand", /* @tp_name@ */
874 sizeof(grand_pyobj), /* @tp_basicsize@ */
875 0, /* @tp_itemsize@ */
876
877 grand_pydealloc, /* @tp_dealloc@ */
878 0, /* @tp_print@ */
879 0, /* @tp_getattr@ */
880 0, /* @tp_setattr@ */
881 0, /* @tp_compare@ */
882 0, /* @tp_repr@ */
883 0, /* @tp_as_number@ */
884 0, /* @tp_as_sequence@ */
885 0, /* @tp_as_mapping@ */
886 0, /* @tp_hash@ */
887 0, /* @tp_call@ */
888 0, /* @tp_str@ */
889 0, /* @tp_getattro@ */
890 0, /* @tp_setattro@ */
891 0, /* @tp_as_buffer@ */
892 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
893 Py_TPFLAGS_BASETYPE,
894
895 /* @tp_doc@ */
896 "Abstract base class for symmetric crypto-based generators.",
897
898 0, /* @tp_traverse@ */
899 0, /* @tp_clear@ */
900 0, /* @tp_richcompare@ */
901 0, /* @tp_weaklistoffset@ */
902 0, /* @tp_iter@ */
903 0, /* @tp_iternext@ */
904 PYMETHODS(gclatinrand), /* @tp_methods@ */
905 0, /* @tp_members@ */
906 0, /* @tp_getset@ */
907 0, /* @tp_base@ */
908 0, /* @tp_dict@ */
909 0, /* @tp_descr_get@ */
910 0, /* @tp_descr_set@ */
911 0, /* @tp_dictoffset@ */
912 0, /* @tp_init@ */
913 PyType_GenericAlloc, /* @tp_alloc@ */
914 abstract_pynew, /* @tp_new@ */
915 0, /* @tp_free@ */
916 0 /* @tp_is_gc@ */
917 };
918
919 /*----- SSL and TLS generators --------------------------------------------*/
920
921 static PyObject *sslprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
922 {
923 struct bin k, s;
924 const gchash *hco = &md5, *hci = &sha;
925 PyObject *rc = 0;
926 static const char *const kwlist[] = { "key", "seed", "ohash", "ihash", 0 };
927
928 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&:new", KWLIST,
929 convbin, &k, convbin, &s,
930 convgchash, &hco, convgchash, &hci))
931 goto end;
932 rc = grand_dopywrap(ty, sslprf_rand(hco, hci, k.p, k.sz, s.p, s.sz),
933 f_freeme);
934 end:
935 return (rc);
936 }
937
938 static PyObject *tlsdx_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
939 {
940 struct bin k, s;
941 const gcmac *mc = &sha_hmac;
942 PyObject *rc = 0;
943 static const char *const kwlist[] = { "key", "seed", "mac", 0 };
944
945 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&:new", KWLIST,
946 convbin, &k, convbin, &s,
947 convgcmac, &mc))
948 goto end;
949 rc = grand_dopywrap(ty, tlsdx_rand(mc, k.p, k.sz, s.p, s.sz), f_freeme);
950 end:
951 return (rc);
952 }
953
954 static PyObject *tlsprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
955 {
956 struct bin k, s;
957 const gcmac *mcl = &md5_hmac, *mcr = &sha_hmac;
958 PyObject *rc = 0;
959 static const char *const kwlist[] = { "key", "seed", "lmac", "rmac", 0 };
960
961 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&:new", KWLIST,
962 convbin, &k, convbin, &s,
963 convgcmac, &mcl, convgcmac, &mcr))
964 goto end;
965 rc = grand_dopywrap(ty, tlsprf_rand(mcl, mcr, k.p, k.sz, s.p, s.sz),
966 f_freeme);
967 end:
968 return (rc);
969 }
970
971 static const PyTypeObject sslprf_pytype_skel = {
972 PyVarObject_HEAD_INIT(0, 0) /* Header */
973 "SSLRand", /* @tp_name@ */
974 sizeof(grand_pyobj), /* @tp_basicsize@ */
975 0, /* @tp_itemsize@ */
976
977 grand_pydealloc, /* @tp_dealloc@ */
978 0, /* @tp_print@ */
979 0, /* @tp_getattr@ */
980 0, /* @tp_setattr@ */
981 0, /* @tp_compare@ */
982 0, /* @tp_repr@ */
983 0, /* @tp_as_number@ */
984 0, /* @tp_as_sequence@ */
985 0, /* @tp_as_mapping@ */
986 0, /* @tp_hash@ */
987 0, /* @tp_call@ */
988 0, /* @tp_str@ */
989 0, /* @tp_getattro@ */
990 0, /* @tp_setattro@ */
991 0, /* @tp_as_buffer@ */
992 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
993 Py_TPFLAGS_BASETYPE,
994
995 /* @tp_doc@ */
996 "SSLRand(KEY, SEED, [ohash = md5], [ihash = sha]):\n"
997 " RNG for SSL master secret.",
998
999 0, /* @tp_traverse@ */
1000 0, /* @tp_clear@ */
1001 0, /* @tp_richcompare@ */
1002 0, /* @tp_weaklistoffset@ */
1003 0, /* @tp_iter@ */
1004 0, /* @tp_iternext@ */
1005 0, /* @tp_methods@ */
1006 0, /* @tp_members@ */
1007 0, /* @tp_getset@ */
1008 0, /* @tp_base@ */
1009 0, /* @tp_dict@ */
1010 0, /* @tp_descr_get@ */
1011 0, /* @tp_descr_set@ */
1012 0, /* @tp_dictoffset@ */
1013 0, /* @tp_init@ */
1014 PyType_GenericAlloc, /* @tp_alloc@ */
1015 sslprf_pynew, /* @tp_new@ */
1016 0, /* @tp_free@ */
1017 0 /* @tp_is_gc@ */
1018 };
1019
1020 static const PyTypeObject tlsdx_pytype_skel = {
1021 PyVarObject_HEAD_INIT(0, 0) /* Header */
1022 "TLSDataExpansion", /* @tp_name@ */
1023 sizeof(grand_pyobj), /* @tp_basicsize@ */
1024 0, /* @tp_itemsize@ */
1025
1026 grand_pydealloc, /* @tp_dealloc@ */
1027 0, /* @tp_print@ */
1028 0, /* @tp_getattr@ */
1029 0, /* @tp_setattr@ */
1030 0, /* @tp_compare@ */
1031 0, /* @tp_repr@ */
1032 0, /* @tp_as_number@ */
1033 0, /* @tp_as_sequence@ */
1034 0, /* @tp_as_mapping@ */
1035 0, /* @tp_hash@ */
1036 0, /* @tp_call@ */
1037 0, /* @tp_str@ */
1038 0, /* @tp_getattro@ */
1039 0, /* @tp_setattro@ */
1040 0, /* @tp_as_buffer@ */
1041 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1042 Py_TPFLAGS_BASETYPE,
1043
1044 /* @tp_doc@ */
1045 "TLSDataExpansion(KEY, SEED, [mac = sha_hmac]):\n"
1046 " TLS data expansion function.",
1047
1048 0, /* @tp_traverse@ */
1049 0, /* @tp_clear@ */
1050 0, /* @tp_richcompare@ */
1051 0, /* @tp_weaklistoffset@ */
1052 0, /* @tp_iter@ */
1053 0, /* @tp_iternext@ */
1054 0, /* @tp_methods@ */
1055 0, /* @tp_members@ */
1056 0, /* @tp_getset@ */
1057 0, /* @tp_base@ */
1058 0, /* @tp_dict@ */
1059 0, /* @tp_descr_get@ */
1060 0, /* @tp_descr_set@ */
1061 0, /* @tp_dictoffset@ */
1062 0, /* @tp_init@ */
1063 PyType_GenericAlloc, /* @tp_alloc@ */
1064 tlsdx_pynew, /* @tp_new@ */
1065 0, /* @tp_free@ */
1066 0 /* @tp_is_gc@ */
1067 };
1068
1069 static const PyTypeObject tlsprf_pytype_skel = {
1070 PyVarObject_HEAD_INIT(0, 0) /* Header */
1071 "TLSPRF", /* @tp_name@ */
1072 sizeof(grand_pyobj), /* @tp_basicsize@ */
1073 0, /* @tp_itemsize@ */
1074
1075 grand_pydealloc, /* @tp_dealloc@ */
1076 0, /* @tp_print@ */
1077 0, /* @tp_getattr@ */
1078 0, /* @tp_setattr@ */
1079 0, /* @tp_compare@ */
1080 0, /* @tp_repr@ */
1081 0, /* @tp_as_number@ */
1082 0, /* @tp_as_sequence@ */
1083 0, /* @tp_as_mapping@ */
1084 0, /* @tp_hash@ */
1085 0, /* @tp_call@ */
1086 0, /* @tp_str@ */
1087 0, /* @tp_getattro@ */
1088 0, /* @tp_setattro@ */
1089 0, /* @tp_as_buffer@ */
1090 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1091 Py_TPFLAGS_BASETYPE,
1092
1093 /* @tp_doc@ */
1094 "TLSPRF(KEY, SEED, [lmac = md5_hmac], [rmac = sha_hmac]):\n"
1095 " TLS pseudorandom function.",
1096
1097 0, /* @tp_traverse@ */
1098 0, /* @tp_clear@ */
1099 0, /* @tp_richcompare@ */
1100 0, /* @tp_weaklistoffset@ */
1101 0, /* @tp_iter@ */
1102 0, /* @tp_iternext@ */
1103 0, /* @tp_methods@ */
1104 0, /* @tp_members@ */
1105 0, /* @tp_getset@ */
1106 0, /* @tp_base@ */
1107 0, /* @tp_dict@ */
1108 0, /* @tp_descr_get@ */
1109 0, /* @tp_descr_set@ */
1110 0, /* @tp_dictoffset@ */
1111 0, /* @tp_init@ */
1112 PyType_GenericAlloc, /* @tp_alloc@ */
1113 tlsprf_pynew, /* @tp_new@ */
1114 0, /* @tp_free@ */
1115 0 /* @tp_is_gc@ */
1116 };
1117
1118 /*----- DSA generator -----------------------------------------------------*/
1119
1120 static PyObject *dsarand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1121 {
1122 struct bin in;
1123 unsigned passes = 1;
1124 grand *r;
1125 PyObject *rc = 0;
1126 static const char *const kwlist[] = { "seed", "passes", 0 };
1127
1128 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
1129 convbin, &in, convuint, &passes))
1130 goto end;
1131 if (!passes) VALERR("must be positive");
1132 r = dsarand_create(in.p, in.sz);
1133 if (passes != 1) r->ops->misc(r, DSARAND_PASSES, passes);
1134 rc = grand_dopywrap(ty, r, f_freeme);
1135 end:
1136 return (rc);
1137 }
1138
1139 static PyObject *drget_seed(PyObject *me, void *hunoz)
1140 {
1141 grand *r = GRAND_R(me);
1142 int n = r->ops->misc(r, DSARAND_SEEDSZ);
1143 PyObject *rc = bytestring_pywrap(0, n);
1144 r->ops->misc(r, DSARAND_GETSEED, BIN_PTR(rc));
1145 return (rc);
1146 }
1147
1148 static PyObject *drget_passes(PyObject *me, void *hunoz)
1149 {
1150 grand *r = GRAND_R(me);
1151 return (PyInt_FromLong(r->ops->misc(r, DSARAND_PASSES, 0)));
1152 }
1153
1154 static int drset_passes(PyObject *me, PyObject *val, void *hunoz)
1155 {
1156 grand *r = GRAND_R(me);
1157 long n;
1158 int rc = -1;
1159
1160 if (!val) NIERR("__del__");
1161 n = PyInt_AsLong(val); if (n == -1 && PyErr_Occurred()) goto end;
1162 if (n <= 0) VALERR("must be positive");
1163 if (n > ULONG_MAX) VALERR("out of range");
1164 r->ops->misc(r, DSARAND_PASSES, (unsigned)n);
1165 rc = 0;
1166 end:
1167 return (rc);
1168 }
1169
1170 static const PyGetSetDef dsarand_pygetset[] = {
1171 #define GETSETNAME(op, name) dr##op##_##name
1172 GET (seed, "R.seed -> current generator seed")
1173 GETSET(passes, "R.passes -> number of passes to create output")
1174 #undef GETSETNAME
1175 { 0 }
1176 };
1177
1178 static const PyTypeObject dsarand_pytype_skel = {
1179 PyVarObject_HEAD_INIT(0, 0) /* Header */
1180 "DSARand", /* @tp_name@ */
1181 sizeof(grand_pyobj), /* @tp_basicsize@ */
1182 0, /* @tp_itemsize@ */
1183
1184 grand_pydealloc, /* @tp_dealloc@ */
1185 0, /* @tp_print@ */
1186 0, /* @tp_getattr@ */
1187 0, /* @tp_setattr@ */
1188 0, /* @tp_compare@ */
1189 0, /* @tp_repr@ */
1190 0, /* @tp_as_number@ */
1191 0, /* @tp_as_sequence@ */
1192 0, /* @tp_as_mapping@ */
1193 0, /* @tp_hash@ */
1194 0, /* @tp_call@ */
1195 0, /* @tp_str@ */
1196 0, /* @tp_getattro@ */
1197 0, /* @tp_setattro@ */
1198 0, /* @tp_as_buffer@ */
1199 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1200 Py_TPFLAGS_BASETYPE,
1201
1202 /* @tp_doc@ */
1203 "DSARand(SEED): pseudorandom number generator for DSA parameters.",
1204
1205 0, /* @tp_traverse@ */
1206 0, /* @tp_clear@ */
1207 0, /* @tp_richcompare@ */
1208 0, /* @tp_weaklistoffset@ */
1209 0, /* @tp_iter@ */
1210 0, /* @tp_iternext@ */
1211 0, /* @tp_methods@ */
1212 0, /* @tp_members@ */
1213 PYGETSET(dsarand), /* @tp_getset@ */
1214 0, /* @tp_base@ */
1215 0, /* @tp_dict@ */
1216 0, /* @tp_descr_get@ */
1217 0, /* @tp_descr_set@ */
1218 0, /* @tp_dictoffset@ */
1219 0, /* @tp_init@ */
1220 PyType_GenericAlloc, /* @tp_alloc@ */
1221 dsarand_pynew, /* @tp_new@ */
1222 0, /* @tp_free@ */
1223 0 /* @tp_is_gc@ */
1224 };
1225
1226 /*----- Blum-Blum-Shub generator ------------------------------------------*/
1227
1228 static PyObject *bbs_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1229 {
1230 mp *n = 0, *x = MP_TWO;
1231 PyObject *rc = 0;
1232 static const char *const kwlist[] = { "n", "x", 0 };
1233
1234 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
1235 convmp, &n, convmp, &x))
1236 goto end;
1237 rc = grand_dopywrap(ty, bbs_rand(n, x), f_freeme);
1238 end:
1239 mp_drop(n);
1240 mp_drop(x);
1241 return (rc);
1242 }
1243
1244 static PyObject *bbsmeth_step(PyObject *me)
1245 { grand *r = GRAND_R(me); r->ops->misc(r, BBS_STEP); RETURN_ME; }
1246
1247 static PyObject *bbsmeth_bits(PyObject *me, PyObject *arg)
1248 {
1249 grand *r = GRAND_R(me); unsigned n; uint32 w;
1250 if (!PyArg_ParseTuple(arg, "O&:bits", convuint, &n)) goto end;
1251 if (n > 32) VALERR("can't get more than 32 bits");
1252 r->ops->misc(r, BBS_BITS, n, &w); return (getulong(w));
1253 end:
1254 return (0);
1255 }
1256
1257 static PyObject *bbsmeth_wrap(PyObject *me)
1258 { grand *r = GRAND_R(me); r->ops->misc(r, BBS_WRAP); RETURN_ME; }
1259
1260 static PyObject *bbsget_n(PyObject *me, void *hunoz)
1261 {
1262 mp *x = MP_NEW; grand *r = GRAND_R(me);
1263 r->ops->misc(r, BBS_MOD, &x); return (mp_pywrap(x));
1264 }
1265
1266 static PyObject *bbsget_x(PyObject *me, void *hunoz)
1267 {
1268 mp *x = MP_NEW; grand *r = GRAND_R(me);
1269 r->ops->misc(r, BBS_STATE, &x); return (mp_pywrap(x));
1270 }
1271
1272 static int bbsset_x(PyObject *me, PyObject *val, void *hunoz)
1273 {
1274 mp *x = 0; grand *r = GRAND_R(me); int rc = -1; if (!val) NIERR("__del__");
1275 if ((x = getmp(val)) == 0) goto end;
1276 r->ops->misc(r, BBS_SET, x); rc = 0;
1277 end: mp_drop(x); return (rc);
1278 }
1279
1280 static PyObject *bbsget_stepsz(PyObject *me, void *hunoz)
1281 {
1282 grand *r = GRAND_R(me);
1283 return (PyInt_FromLong(r->ops->misc(r, BBS_STEPSZ)));
1284 }
1285
1286 static const PyMethodDef bbs_pymethods[] = {
1287 #define METHNAME(name) bbsmeth_##name
1288 NAMETH(step, "R.step(): steps the generator (not useful)")
1289 METH (bits, "R.bits(N) -> W: returns N bits (<= 32) from the generator")
1290 NAMETH(wrap, "R.wrap(): flushes unused bits in internal buffer")
1291 #undef METHNAME
1292 { 0 }
1293 };
1294
1295 static const PyGetSetDef bbs_pygetset[] = {
1296 #define GETSETNAME(op, name) bbs##op##_##name
1297 GET (n, "R.n -> Blum modulus")
1298 GETSET(x, "R.x -> current seed value")
1299 GET (stepsz, "R.stepsz -> number of bits generated per step")
1300 #undef GETSETNAME
1301 { 0 }
1302 };
1303
1304 static const PyTypeObject bbs_pytype_skel = {
1305 PyVarObject_HEAD_INIT(0, 0) /* Header */
1306 "BlumBlumShub", /* @tp_name@ */
1307 sizeof(grand_pyobj), /* @tp_basicsize@ */
1308 0, /* @tp_itemsize@ */
1309
1310 grand_pydealloc, /* @tp_dealloc@ */
1311 0, /* @tp_print@ */
1312 0, /* @tp_getattr@ */
1313 0, /* @tp_setattr@ */
1314 0, /* @tp_compare@ */
1315 0, /* @tp_repr@ */
1316 0, /* @tp_as_number@ */
1317 0, /* @tp_as_sequence@ */
1318 0, /* @tp_as_mapping@ */
1319 0, /* @tp_hash@ */
1320 0, /* @tp_call@ */
1321 0, /* @tp_str@ */
1322 0, /* @tp_getattro@ */
1323 0, /* @tp_setattro@ */
1324 0, /* @tp_as_buffer@ */
1325 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1326 Py_TPFLAGS_BASETYPE,
1327
1328 /* @tp_doc@ */
1329 "BlumBlumShub(N, [x = 2]): Blum-Blum-Shub pseudorandom number generator.",
1330
1331 0, /* @tp_traverse@ */
1332 0, /* @tp_clear@ */
1333 0, /* @tp_richcompare@ */
1334 0, /* @tp_weaklistoffset@ */
1335 0, /* @tp_iter@ */
1336 0, /* @tp_iternext@ */
1337 PYMETHODS(bbs), /* @tp_methods@ */
1338 0, /* @tp_members@ */
1339 PYGETSET(bbs), /* @tp_getset@ */
1340 0, /* @tp_base@ */
1341 0, /* @tp_dict@ */
1342 0, /* @tp_descr_get@ */
1343 0, /* @tp_descr_set@ */
1344 0, /* @tp_dictoffset@ */
1345 0, /* @tp_init@ */
1346 PyType_GenericAlloc, /* @tp_alloc@ */
1347 bbs_pynew, /* @tp_new@ */
1348 0, /* @tp_free@ */
1349 0 /* @tp_is_gc@ */
1350 };
1351
1352 typedef struct bbspriv_pyobj {
1353 grand_pyobj gr;
1354 bbs_priv bp;
1355 } bbspriv_pyobj;
1356
1357 #define BBSPRIV_BP(o) (&((bbspriv_pyobj *)(o))->bp)
1358
1359 static PyObject *bbspriv_pynew(PyTypeObject *ty,
1360 PyObject *arg, PyObject *kw)
1361 {
1362 mp *p = 0, *q = 0, *n = 0, *x = MP_TWO;
1363 bbspriv_pyobj *rc = 0;
1364 static const char *const kwlist[] = { "n", "p", "q", "seed", 0 };
1365
1366 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&O&O&O&:new", KWLIST,
1367 convmp, &n, convmp, &p, convmp, &q,
1368 convmp, &x))
1369 goto end;
1370 if (!n + !p + !q > 1) VALERR("must specify at least two of n, p, q");
1371 if (!n) n = mp_mul(MP_NEW, p, q);
1372 else if (!p) mp_div(&p, 0, n, q);
1373 else if (!q) mp_div(&q, 0, n, p);
1374 rc = (bbspriv_pyobj *)ty->tp_alloc(ty, 0);
1375 rc->gr.r = bbs_rand(n, x);
1376 rc->gr.f = f_freeme;
1377 rc->bp.p = MP_COPY(p);
1378 rc->bp.q = MP_COPY(q);
1379 rc->bp.n = MP_COPY(n);
1380 end:
1381 mp_drop(p); mp_drop(q); mp_drop(n); mp_drop(x);
1382 return ((PyObject *)rc);
1383 }
1384
1385 static PyObject *bpmeth_generate(PyObject *me, PyObject *arg, PyObject *kw)
1386 {
1387 bbs_priv bp = { 0 };
1388 mp *x = MP_TWO;
1389 struct excinfo exc = EXCINFO_INIT;
1390 pypgev evt = { { 0 } };
1391 unsigned nbits, n = 0;
1392 grand *r = &rand_global;
1393 static const char *const kwlist[] =
1394 { "nbits", "event", "rng", "nsteps", "seed", 0 };
1395 bbspriv_pyobj *rc = 0;
1396
1397 evt.exc = &exc;
1398 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&O&O&O&:generate", KWLIST,
1399 convuint, &nbits, convpgev, &evt,
1400 convgrand, &r, convuint, &n, convmp, &x))
1401 goto end;
1402 if (bbs_gen(&bp, nbits, r, n, evt.ev.proc, evt.ev.ctx))
1403 PGENERR(&exc);
1404 rc = PyObject_New(bbspriv_pyobj, bbspriv_pytype);
1405 rc->gr.r = bbs_rand(bp.n, x);
1406 rc->gr.f = f_freeme;
1407 rc->bp.p = MP_COPY(bp.p);
1408 rc->bp.q = MP_COPY(bp.q);
1409 rc->bp.n = MP_COPY(bp.n);
1410 end:
1411 mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n); mp_drop(x);
1412 return ((PyObject *)rc);
1413 }
1414
1415 static void bbspriv_pydealloc(PyObject *me)
1416 {
1417 bbs_priv *bp = BBSPRIV_BP(me);
1418 mp_drop(bp->n);
1419 mp_drop(bp->p);
1420 mp_drop(bp->q);
1421 grand_pydealloc(me);
1422 }
1423
1424 static PyObject *bpmeth_ff(PyObject *me, PyObject *arg)
1425 {
1426 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1427 if (!PyArg_ParseTuple(arg, "O&:ff", convmp, &n)) return (0);
1428 r->ops->misc(r, BBS_FF, bp, n); RETURN_ME;
1429 }
1430
1431 static PyObject *bpmeth_rew(PyObject *me, PyObject *arg)
1432 {
1433 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1434 if (!PyArg_ParseTuple(arg, "O&:rew", convmp, &n)) return (0);
1435 r->ops->misc(r, BBS_REW, bp, n); RETURN_ME;
1436 }
1437
1438 static PyObject *bpget_n(PyObject *me, void *hunoz)
1439 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->n))); }
1440
1441 static PyObject *bpget_p(PyObject *me, void *hunoz)
1442 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->p))); }
1443
1444 static PyObject *bpget_q(PyObject *me, void *hunoz)
1445 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->q))); }
1446
1447 static const PyMethodDef bbspriv_pymethods[] = {
1448 #define METHNAME(name) bpmeth_##name
1449 METH (ff, "R.ff(N): fast-forward N places")
1450 METH (rew, "R.rew(N): rewind N places")
1451 KWSMTH(generate, "generate(NBITS, [event = pgen_nullev], "
1452 "[rng = rand], [nsteps = 0], [seed = 2]) -> R")
1453 #undef METHNAME
1454 { 0 }
1455 };
1456
1457 static const PyGetSetDef bbspriv_pygetset[] = {
1458 #define GETSETNAME(op, name) bp##op##_##name
1459 GET (n, "R.n -> Blum modulus")
1460 GET (p, "R.p -> one of the factors of the modulus")
1461 GET (q, "R.q -> one of the factors of the modulus")
1462 #undef GETSETNAME
1463 { 0 }
1464 };
1465
1466 static const PyTypeObject bbspriv_pytype_skel = {
1467 PyVarObject_HEAD_INIT(0, 0) /* Header */
1468 "BBSPriv", /* @tp_name@ */
1469 sizeof(bbspriv_pyobj), /* @tp_basicsize@ */
1470 0, /* @tp_itemsize@ */
1471
1472 bbspriv_pydealloc, /* @tp_dealloc@ */
1473 0, /* @tp_print@ */
1474 0, /* @tp_getattr@ */
1475 0, /* @tp_setattr@ */
1476 0, /* @tp_compare@ */
1477 0, /* @tp_repr@ */
1478 0, /* @tp_as_number@ */
1479 0, /* @tp_as_sequence@ */
1480 0, /* @tp_as_mapping@ */
1481 0, /* @tp_hash@ */
1482 0, /* @tp_call@ */
1483 0, /* @tp_str@ */
1484 0, /* @tp_getattro@ */
1485 0, /* @tp_setattro@ */
1486 0, /* @tp_as_buffer@ */
1487 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1488 Py_TPFLAGS_BASETYPE,
1489
1490 /* @tp_doc@ */
1491 "BBSPriv(..., [seed = 2]): Blum-Blum-Shub, with private key.\n"
1492 " Keywords: n, p, q; must provide at least two",
1493
1494 0, /* @tp_traverse@ */
1495 0, /* @tp_clear@ */
1496 0, /* @tp_richcompare@ */
1497 0, /* @tp_weaklistoffset@ */
1498 0, /* @tp_iter@ */
1499 0, /* @tp_iternext@ */
1500 PYMETHODS(bbspriv), /* @tp_methods@ */
1501 0, /* @tp_members@ */
1502 PYGETSET(bbspriv), /* @tp_getset@ */
1503 0, /* @tp_base@ */
1504 0, /* @tp_dict@ */
1505 0, /* @tp_descr_get@ */
1506 0, /* @tp_descr_set@ */
1507 0, /* @tp_dictoffset@ */
1508 0, /* @tp_init@ */
1509 PyType_GenericAlloc, /* @tp_alloc@ */
1510 bbspriv_pynew, /* @tp_new@ */
1511 0, /* @tp_free@ */
1512 0 /* @tp_is_gc@ */
1513 };
1514
1515 /*----- Global stuff ------------------------------------------------------*/
1516
1517 static const struct nameval consts[] = {
1518 CONST(RAND_IBITS),
1519 { 0 }
1520 };
1521
1522 void rand_pyinit(void)
1523 {
1524 INITTYPE(grand, root);
1525 INITTYPE(truerand, grand);
1526 INITTYPE(fibrand, grand);
1527 INITTYPE(lcrand, grand);
1528 INITTYPE(dsarand, grand);
1529 INITTYPE(bbs, grand);
1530 INITTYPE(bbspriv, bbs);
1531 INITTYPE(sslprf, grand);
1532 INITTYPE(tlsdx, grand);
1533 INITTYPE(tlsprf, grand);
1534 INITTYPE(gccrand, type);
1535 INITTYPE(gcrand, grand);
1536 INITTYPE(gclatinrand, gcrand);
1537 rand_noisesrc(RAND_GLOBAL, &noise_source);
1538 rand_seed(RAND_GLOBAL, 160);
1539 }
1540
1541 static const char *crand_namefn(const void *p)
1542 { const gccrand_info *const *cls = p; return (*cls ? (*cls)->name : 0); }
1543 static PyObject *crand_valfn(const void *p)
1544 { const gccrand_info *const *cls = p; return (gccrand_pywrap(*cls)); }
1545
1546 void rand_pyinsert(PyObject *mod)
1547 {
1548 INSERT("GRand", grand_pytype);
1549 INSERT("TrueRand", truerand_pytype);
1550 INSERT("LCRand", lcrand_pytype);
1551 INSERT("FibRand", fibrand_pytype);
1552 INSERT("SSLRand", sslprf_pytype);
1553 INSERT("TLSDataExpansion", tlsdx_pytype);
1554 INSERT("TLSPRF", tlsprf_pytype);
1555 INSERT("DSARand", dsarand_pytype);
1556 INSERT("BlumBlumShub", bbs_pytype);
1557 INSERT("BBSPriv", bbspriv_pytype);
1558 INSERT("GCCRand", gccrand_pytype);
1559 INSERT("GCRand", gcrand_pytype);
1560 INSERT("GCLatinRand", gclatinrand_pytype);
1561 rand_pyobj = grand_pywrap(&rand_global, 0); Py_INCREF(rand_pyobj);
1562 gccrands_dict = make_algtab(gcrandtab, sizeof(gccrand_info *),
1563 crand_namefn, crand_valfn);
1564 INSERT("gccrands", gccrands_dict); Py_INCREF(gccrands_dict);
1565 INSERT("rand", rand_pyobj);
1566 setconstants(mod, consts);
1567 }
1568
1569 /*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings