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