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  76   if (!GRAND_R(me)) VALERR("random generator object is no longer valid");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