mdw@git.distorted.org.uk Git - pyke/blob - catacomb-python.h

   1 /* -*-c-*-
   2  *
   3  * $Id$
   4  *
   5  * Definitions for Catacomb bindings
   6  *
   7  * (c) 2004 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of the Python interface to Catacomb.
  13  *
  14  * Catacomb/Python is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * Catacomb/Python is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with Catacomb/Python; if not, write to the Free Software Foundation,
  26  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  27  */
  28
  29 #ifndef CATACOMB_PYTHON_H
  30 #define CATACOMB_PYTHON_H
  31
  32 #ifdef __cplusplus
  33   extern "C" {
  34 #endif
  35
  36 /*----- Header files ------------------------------------------------------*/
  37
  38 #include <Python.h>
  39 #include <longintrepr.h>
  40 #include <structmember.h>
  41
  42 #undef ULLONG_MAX
  43 #undef ULONG_LONG_MAX
  44
  45 #include <mLib/darray.h>
  46 #include <mLib/dstr.h>
  47 #include <mLib/macros.h>
  48 #include <mLib/quis.h>
  49
  50 #include <catacomb/buf.h>
  51
  52 #include <catacomb/grand.h>
  53 #include <catacomb/rand.h>
  54 #include <catacomb/noise.h>
  55 #include <catacomb/bbs.h>
  56 #include <catacomb/mprand.h>
  57 #include <catacomb/lcrand.h>
  58 #include <catacomb/fibrand.h>
  59 #include <catacomb/dsarand.h>
  60 #include <catacomb/sslprf.h>
  61 #include <catacomb/tlsprf.h>
  62 #include <catacomb/blkc.h>
  63
  64 #include <catacomb/gcipher.h>
  65 #include <catacomb/ghash.h>
  66 #include <catacomb/gmac.h>
  67 #include <catacomb/md5.h>
  68 #include <catacomb/md5-hmac.h>
  69 #include <catacomb/sha.h>
  70 #include <catacomb/sha-mgf.h>
  71 #include <catacomb/sha-hmac.h>
  72
  73 #include <catacomb/mp.h>
  74 #include <catacomb/mpint.h>
  75 #include <catacomb/mpmul.h>
  76 #include <catacomb/mpcrt.h>
  77 #include <catacomb/mpmont.h>
  78 #include <catacomb/mpbarrett.h>
  79 #include <catacomb/mpreduce.h>
  80
  81 #include <catacomb/pgen.h>
  82 #include <catacomb/pfilt.h>
  83 #include <catacomb/strongprime.h>
  84 #include <catacomb/limlee.h>
  85 #include <catacomb/dh.h>
  86 #include <catacomb/ptab.h>
  87 #include <catacomb/bintab.h>
  88 #include <catacomb/dsa.h>
  89
  90 #include <catacomb/gf.h>
  91 #include <catacomb/gfreduce.h>
  92 #include <catacomb/gfn.h>
  93
  94 #include <catacomb/field.h>
  95 #include <catacomb/field-guts.h>
  96
  97 #include <catacomb/ec.h>
  98 #include <catacomb/ec-raw.h>
  99 #include <catacomb/ectab.h>
 100
 101 #include <catacomb/group.h>
 102 #include <catacomb/group-guts.h>
 103
 104 #include <catacomb/gdsa.h>
 105 #include <catacomb/gkcdsa.h>
 106 #include <catacomb/rsa.h>
 107
 108 #include <catacomb/key.h>
 109 #include <catacomb/passphrase.h>
 110 #include <catacomb/pixie.h>
 111
 112 #include <catacomb/share.h>
 113 #include <catacomb/gfshare.h>
 114
 115 /*----- Utility macros ----------------------------------------------------*/
 116
 117 #define RETURN_OBJ(obj) do { Py_INCREF(obj); return (obj); } while (0)
 118 #define RETURN_NONE RETURN_OBJ(Py_None)
 119 #define RETURN_NOTIMPL RETURN_OBJ(Py_NotImplemented)
 120 #define RETURN_TRUE RETURN_OBJ(Py_True)
 121 #define RETURN_FALSE RETURN_OBJ(Py_False)
 122 #define RETURN_ME RETURN_OBJ(me)
 123
 124 #define EXCERR(exc, str) do {                                           \
 125   PyErr_SetString(exc, str);                                            \
 126   goto end;                                                             \
 127 } while (0)
 128 #define VALERR(str) EXCERR(PyExc_ValueError, str)
 129 #define TYERR(str) EXCERR(PyExc_TypeError, str)
 130 #define ZDIVERR(str) EXCERR(PyExc_ZeroDivisionError, str)
 131 #define SYNERR(str) EXCERR(PyExc_SyntaxError, str)
 132 #define SYSERR(str) EXCERR(PyExc_SystemError, str)
 133 #define NIERR(str) EXCERR(PyExc_NotImplementedError, str)
 134 #define INDEXERR(idx) do {                                              \
 135   PyErr_SetObject(PyExc_KeyError, idx);                                 \
 136   goto end;                                                             \
 137 } while (0)
 138 #define OSERR(name) do {                                                \
 139   PyErr_SetFromErrnoWithFilename(PyExc_OSError, name);                  \
 140   goto end;                                                             \
 141 } while (0)
 142 #define PGENERR do { pgenerr(); goto end; } while (0)
 143
 144 #define CONVFUNC(ty, cty, ext)                                          \
 145   int conv##ty(PyObject *o, void *p)                                    \
 146   {                                                                     \
 147     if (!PyObject_TypeCheck(o, ty##_pytype))                            \
 148       TYERR("wanted a " #ty);                                           \
 149     *(cty *)p = ext(o);                                                 \
 150     return (1);                                                         \
 151   end:                                                                  \
 152     return (0);                                                         \
 153   }
 154
 155 #define root_pytype 0
 156 #define type_pytype &PyType_Type
 157 #define INITTYPE(ty, base) do {                                         \
 158   ty##_pytype_skel.tp_base = base##_pytype;                             \
 159   ty##_pytype = inittype(&ty##_pytype_skel);                            \
 160 } while (0)
 161
 162 #define INSERT(name, ob) do {                                           \
 163   PyObject *_o = (PyObject *)(ob);                                      \
 164   Py_INCREF(_o);                                                        \
 165   PyModule_AddObject(mod, name, _o);                                    \
 166 } while (0)
 167
 168 #define INSEXC(name, var, base, meth)                                   \
 169   INSERT(name, var = mkexc(mod, base, name, meth))
 170
 171 #define METH(func, doc)                                                 \
 172   { #func, METHNAME(func), METH_VARARGS, doc },
 173 #define KWMETH(func, doc)                                               \
 174   { #func, (PyCFunction)METHNAME(func),                                 \
 175     METH_VARARGS | METH_KEYWORDS, doc },
 176
 177 #define GET(func, doc)                                                  \
 178   { #func, GETSETNAME(get, func), 0, doc },
 179 #define GETSET(func, doc)                                               \
 180   { #func, GETSETNAME(get, func), GETSETNAME(set, func), doc },
 181
 182 #define MEMBER(name, ty, f, doc)                                        \
 183   { #name, ty, offsetof(MEMBERSTRUCT, name), f, doc },
 184
 185 #define MODULES(_)                                                      \
 186   _(bytestring) _(buffer)                                               \
 187   _(rand) _(algorithms) _(pubkey) _(pgen)                               \
 188   _(mp) _(field) _(ec) _(group)                                         \
 189   _(passphrase) _(share) _(key)
 190 #define DOMODINIT(m) m##_pyinit();
 191 #define DOMODINSERT(m) m##_pyinsert(mod);
 192 #define INIT_MODULES do { MODULES(DOMODINIT) } while (0)
 193 #define INSERT_MODULES do { MODULES(DOMODINSERT) } while (0)
 194
 195 #define DO(m)                                                           \
 196   extern void m##_pyinit(void);                                         \
 197   extern void m##_pyinsert(PyObject *);
 198 MODULES(DO)
 199 #undef DO
 200
 201 #define FREEOBJ(obj)                                                    \
 202   (((PyObject *)(obj))->ob_type->tp_free((PyObject *)(obj)))
 203
 204 #define GEN(func, base)                                                 \
 205   static PyObject *func(void)                                           \
 206   {                                                                     \
 207     PyObject *d = PyDict_New();                                         \
 208     PyObject *o;                                                        \
 209     int i;                                                              \
 210                                                                         \
 211     for (i = 0; g##base##tab[i]; i++) {                                 \
 212       o = gc##base##_pywrap((/*unconst*/ gc##base *)g##base##tab[i]);   \
 213       PyDict_SetItemString(d,                                           \
 214                            (/*unconst*/ char *)g##base##tab[i]->name,   \
 215                            o);                                          \
 216       Py_DECREF(o);                                                     \
 217     }                                                                   \
 218     return (d);                                                         \
 219   }
 220
 221 struct nameval { const char *name; unsigned long value; };
 222 extern void setconstants(PyObject *, const struct nameval *);
 223
 224 extern PyObject *mexp_common(PyObject *, PyObject *, size_t,
 225                              PyObject *(*id)(PyObject *),
 226                              int (*fill)(void *, PyObject *,
 227                                          PyObject *, PyObject *),
 228                              PyObject *(*exp)(PyObject *, void *, int),
 229                              void (*drop)(void *));
 230
 231 extern int convulong(PyObject *, void *);
 232 #define DECL_CONVU_(n) extern int convu##n(PyObject *, void *);
 233 DOUINTSZ(DECL_CONVU_)
 234 extern int convmpw(PyObject *, void *);
 235 extern int convuint(PyObject *, void *);
 236 extern int convszt(PyObject *, void *);
 237 extern int convbool(PyObject *, void *);
 238 extern PyObject *abstract_pynew(PyTypeObject *, PyObject *, PyObject *);
 239 extern PyObject *getbool(int);
 240 #define DECL_GETU_(n) extern PyObject *getu##n(uint##n);
 241 DOUINTSZ(DECL_GETU_)
 242 extern void *newtype(PyTypeObject *, const PyTypeObject *, const char *);
 243
 244 extern PyObject * mkexc(PyObject *, PyObject *, const char *, PyMethodDef *);
 245 extern PyTypeObject *inittype(PyTypeObject *);
 246 extern void addmethods(const PyMethodDef *);
 247 extern PyMethodDef *donemethods(void);
 248
 249 /*----- Mapping methods ---------------------------------------------------*/
 250
 251 #define GMAP_METH(func, doc) { #func, gmapmeth_##func, METH_VARARGS, doc },
 252 #define GMAP_KWMETH(func, doc)                                          \
 253   { #func, (PyCFunction)gmapmeth_##func, METH_VARARGS|METH_KEYWORDS, doc },
 254 #define GMAP_METHDECL(func, doc)                                        \
 255   extern PyObject *gmapmeth_##func(PyObject *, PyObject *);
 256 #define GMAP_KWMETHDECL(func, doc)                                      \
 257   extern PyObject *gmapmeth_##func(PyObject *, PyObject *, PyObject *);
 258
 259 #define GMAP_DOMETHODS(METH, KWMETH)                                    \
 260   METH  (has_key,       "D.has_key(KEY) -> BOOL")                       \
 261   METH  (keys,          "D.keys() -> LIST")                             \
 262   METH  (values,        "D.values() -> LIST")                           \
 263   METH  (items,         "D.items() -> LIST")                            \
 264   METH  (iterkeys,      "D.iterkeys() -> ITER")                         \
 265   METH  (itervalues,    "D.itervalues() -> ITER")                       \
 266   METH  (iteritems,     "D.iteritems() -> ITER")                        \
 267   METH  (clear,         "D.clear()")                                    \
 268   KWMETH(get,           "D.get(KEY, [default = None]) -> VALUE")        \
 269   KWMETH(setdefault,    "D.setdefault(K, [default = None]) -> VALUE")   \
 270   KWMETH(pop,           "D.pop(KEY, [default = <error>]) -> VALUE")     \
 271   METH  (popitem,       "D.popitem() -> (KEY, VALUE)")                  \
 272   METH  (update,        "D.update(MAP)")
 273
 274 GMAP_DOMETHODS(GMAP_METHDECL, GMAP_KWMETHDECL)
 275 #define GMAP_METHODS GMAP_DOMETHODS(GMAP_METH, GMAP_KWMETH)
 276 extern int gmap_pysize(PyObject *);
 277 extern PySequenceMethods gmap_pysequence;
 278 extern PyMethodDef gmap_pymethods[];
 279
 280 /*----- Bytestrings -------------------------------------------------------*/
 281
 282 PyTypeObject *bytestring_pyobj;
 283 PyObject *bytestring_pywrap(const void *, size_t);
 284 PyObject *bytestring_pywrapbuf(buf *);
 285
 286 /*----- Multiprecision arithmetic -----------------------------------------*/
 287
 288 typedef struct mp_pyobj {
 289   PyObject_HEAD
 290   mp *x;
 291 } mp_pyobj;
 292
 293 extern PyTypeObject *mp_pytype;
 294 extern PyTypeObject *gf_pytype;
 295 #define MP_X(o) (((mp_pyobj *)(o))->x)
 296 #define MP_PYCHECK(o) PyObject_TypeCheck((o), mp_pytype)
 297 #define GF_PYCHECK(o) PyObject_TypeCheck((o), gf_pytype)
 298
 299 extern mp *mp_frompylong(PyObject *);
 300 extern PyObject *mp_topylong(mp *);
 301 extern mp *tomp(PyObject *);
 302 extern mp *getmp(PyObject *);
 303 extern int convmp(PyObject *, void *);
 304 extern mp *getgf(PyObject *);
 305 extern int convgf(PyObject *, void *);
 306 extern PyObject *mp_pywrap(mp *);
 307 extern PyObject *gf_pywrap(mp *);
 308 extern mp *mp_frompyobject(PyObject *, int);
 309 extern PyObject *mp_topystring(mp *, int,
 310                                const char *, const char *, const char *);
 311 extern int mp_tolong_checked(mp *, long *);
 312
 313 /*----- Abstract fields ---------------------------------------------------*/
 314
 315 typedef struct field_pyobj {
 316   PyHeapTypeObject ty;
 317   field *f;
 318 } field_pyobj;
 319
 320 extern PyTypeObject *fe_pytype;
 321 #define FE_PYCHECK(o) PyObject_TypeCheck((o), fe_pytype)
 322 #define FE_F(o) (((fe_pyobj *)(o))->f)
 323 #define FE_FOBJ(o) ((PyObject *)(o)->ob_type)
 324 #define FE_X(o) (((fe_pyobj *)(o))->x)
 325 extern PyObject *fe_pywrap(PyObject *, mp *);
 326 extern mp *getfe(field *, PyObject *);
 327
 328 typedef struct fe_pyobj {
 329   PyObject_HEAD
 330   field *f;
 331   mp *x;
 332 } fe_pyobj;
 333
 334 extern PyTypeObject *field_pytype;
 335 extern PyTypeObject *primefield_pytype;
 336 extern PyTypeObject *niceprimefield_pytype;
 337 extern PyTypeObject *binfield_pytype;
 338 extern PyTypeObject *binpolyfield_pytype;
 339 extern PyTypeObject *binnormfield_pytype;
 340 #define FIELD_PYCHECK(o) PyObject_TypeCheck((o), field_pytype)
 341 #define FIELD_F(o) (((field_pyobj *)(o))->f)
 342 extern PyObject *field_pywrap(field *);
 343 extern field *field_copy(field *);
 344
 345 /*----- Elliptic curves ---------------------------------------------------*/
 346
 347 typedef struct ecpt_pyobj {
 348   PyObject_HEAD
 349   ec_curve *c;
 350   ec p;
 351 } ecpt_pyobj;
 352
 353 extern PyTypeObject *ecpt_pytype, *ecptcurve_pytype;
 354 #define ECPT_PYCHECK(o) PyObject_TypeCheck((o), ecpt_pytype)
 355 #define ECPTCURVE_PYCHECK(o) PyObject_TypeCheck((o), ecptcurve_pytype)
 356 #define ECPT_C(o) (((ecpt_pyobj *)(o))->c)
 357 #define ECPT_COBJ(o) ((PyObject *)(o)->ob_type)
 358 #define ECPT_FOBJ(o) ECCURVE_FOBJ(ECPT_COBJ((o)))
 359 #define ECPT_P(o) (&((ecpt_pyobj *)(o))->p)
 360 extern PyObject *ecpt_pywrap(PyObject *, ec *);
 361 extern PyObject *ecpt_pywrapout(void *, ec *);
 362 extern int toecpt(ec_curve *, ec *, PyObject *);
 363 extern int getecpt(ec_curve *, ec *, PyObject *);
 364 extern void getecptout(ec *, PyObject *);
 365 extern int convecpt(PyObject *, void *);
 366
 367 typedef struct eccurve_pyobj {
 368   PyHeapTypeObject ty;
 369   ec_curve *c;
 370   PyObject *fobj;
 371 } eccurve_pyobj;
 372
 373 extern PyTypeObject *eccurve_pytype;
 374 extern PyTypeObject *ecprimecurve_pytype;
 375 extern PyTypeObject *ecprimeprojcurve_pytype;
 376 extern PyTypeObject *ecbincurve_pytype;
 377 extern PyTypeObject *ecbinprojcurve_pytype;
 378 #define ECCURVE_PYCHECK(o) PyObject_TypeCheck((o), eccurve_pytype)
 379 #define ECCURVE_C(o) (((eccurve_pyobj *)(o))->c)
 380 #define ECCURVE_FOBJ(o) (((eccurve_pyobj *)(o))->fobj)
 381 extern PyObject *eccurve_pywrap(PyObject *, ec_curve *);
 382 extern ec_curve *eccurve_copy(ec_curve *);
 383
 384 typedef struct ecinfo_pyobj {
 385   PyObject_HEAD
 386   ec_info ei;
 387   PyObject *cobj;
 388 } ecinfo_pyobj;
 389
 390 extern PyTypeObject *ecinfo_pytype;
 391 #define ECINFO_PYCHECK(o) PyObject_TypeCheck((o), ecinfo_pytype)
 392 #define ECINFO_EI(o) (&((ecinfo_pyobj *)(o))->ei)
 393 #define ECINFO_COBJ(o) (((ecinfo_pyobj *)(o))->cobj)
 394 extern void ecinfo_copy(ec_info *, const ec_info *);
 395 extern PyObject *ecinfo_pywrap(ec_info *);
 396
 397 /*----- Cyclic groups -----------------------------------------------------*/
 398
 399 typedef struct fginfo_pyobj {
 400   PyObject_HEAD
 401   gprime_param dp;
 402 } fginfo_pyobj;
 403
 404 PyTypeObject *fginfo_pytype, *dhinfo_pytype, *bindhinfo_pytype;
 405 #define FGINFO_DP(fg) (&((fginfo_pyobj *)(fg))->dp)
 406 PyObject *fginfo_pywrap(gprime_param *, PyTypeObject *);
 407
 408 typedef struct ge_pyobj {
 409   PyObject_HEAD
 410   ge *x;
 411   group *g;
 412 } ge_pyobj;
 413
 414 extern PyTypeObject *ge_pytype;
 415 #define GE_PYCHECK(o) PyObject_TypeCheck((o), ge_pytype)
 416 #define GE_X(o) (((ge_pyobj *)(o))->x)
 417 #define GE_G(o) (((ge_pyobj *)(o))->g)
 418 #define GE_GOBJ(o) ((PyObject *)(group_pyobj *)(o)->ob_type)
 419 extern PyObject *ge_pywrap(PyObject *, ge *);
 420
 421 typedef struct group_pyobj {
 422   PyHeapTypeObject ty;
 423   group *g;
 424 } group_pyobj;
 425
 426 extern PyTypeObject *group_pytype;
 427 extern PyTypeObject *primegroup_pytype, *bingroup_pytype, *ecgroup_pytype;
 428 #define GROUP_G(o) (((group_pyobj *)(o))->g)
 429 extern PyObject *group_pywrap(group *);
 430 extern group *group_copy(group *);
 431
 432 /*----- Random number generators ------------------------------------------*/
 433
 434 #define f_freeme 1u
 435
 436 typedef struct grand_pyobj {
 437   PyObject_HEAD
 438   unsigned f;
 439   grand *r;
 440 } grand_pyobj;
 441
 442 extern PyTypeObject *grand_pytype, *truerand_pytype;
 443 extern PyTypeObject *lcrand_pytype,* fibrand_pytype;
 444 extern PyTypeObject *dsarand_pytype, *bbs_pytype;
 445 extern PyObject *rand_pyobj;
 446 #define GRAND_PYCHECK(o) PyObject_TypeCheck((o), grand_pytype)
 447 #define GRAND_F(o) (((grand_pyobj *)(o))->f)
 448 #define GRAND_R(o) (((grand_pyobj *)(o))->r)
 449 extern PyObject *grand_pywrap(grand *, unsigned);
 450 extern int convgrand(PyObject *, void *);
 451
 452 /*----- Key sizes ---------------------------------------------------------*/
 453
 454 typedef struct keysz_pyobj {
 455   PyObject_HEAD
 456   int dfl;
 457 } keysz_pyobj;
 458
 459 typedef struct keyszrange_pyobj {
 460   PyObject_HEAD
 461   int dfl;
 462   int min, max, mod;
 463 } keyszrange_pyobj;
 464
 465 typedef struct keyszset_pyobj {
 466   PyObject_HEAD
 467   int dfl;
 468   PyObject *set;
 469 } keyszset_pyobj;
 470
 471 #define KEYSZ_PYCHECK(o) PyObject_TypeCheck((o), keysz_pytype)
 472 extern PyObject *keysz_pywrap(const octet *);
 473
 474 /*----- Symmetric cryptography --------------------------------------------*/
 475
 476 typedef struct gccipher_pyobj {
 477   PyHeapTypeObject ty;
 478   gccipher *cc;
 479 } gccipher_pyobj;
 480
 481 extern PyTypeObject *gccipher_pytype;
 482 #define GCCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gccipher_pytype)
 483 #define GCCIPHER_CC(o) (((gccipher_pyobj *)(o))->cc)
 484 #define GCCIPHER_F(o) (((gccipher_pyobj *)(o))->f)
 485 extern PyObject *gccipher_pywrap(gccipher *);
 486 extern int convgccipher(PyObject *, void *);
 487 extern int convgcipher(PyObject *, void *);
 488
 489 typedef struct gcipher_pyobj {
 490   PyObject_HEAD
 491   unsigned f;
 492   gcipher *c;
 493 } gcipher_pyobj;
 494
 495 extern PyTypeObject *gcipher_pytype;
 496 #define GCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gcipher_pytype)
 497 #define GCIPHER_C(o) (((gcipher_pyobj *)(o))->c)
 498 #define GCIPHER_F(o) (((gcipher_pyobj *)(o))->f)
 499 extern PyObject *gcipher_pywrap(PyObject *, gcipher *, unsigned);
 500 extern int convgcipher(PyObject *, void *);
 501
 502 typedef struct gchash_pyobj {
 503   PyHeapTypeObject ty;
 504   gchash *ch;
 505 } gchash_pyobj;
 506
 507 extern PyTypeObject *gchash_pytype;
 508 #define GCHASH_PYCHECK(o) PyObject_TypeCheck((o), gchash_pytype)
 509 #define GCHASH_CH(o) (((gchash_pyobj *)(o))->ch)
 510 #define GCHASH_F(o) (((gchash_pyobj *)(o))->f)
 511 extern PyObject *gchash_pywrap(gchash *);
 512 extern int convgchash(PyObject *, void *);
 513
 514 typedef struct ghash_pyobj {
 515   PyObject_HEAD
 516   unsigned f;
 517   ghash *h;
 518 } ghash_pyobj;
 519
 520 extern PyTypeObject *ghash_pytype, *gmhash_pytype;
 521 extern PyObject *sha_pyobj, *has160_pyobj;
 522 #define GHASH_PYCHECK(o) PyObject_TypeCheck((o), ghash_pytype)
 523 #define GHASH_H(o) (((ghash_pyobj *)(o))->h)
 524 #define GHASH_F(o) (((ghash_pyobj *)(o))->f)
 525 extern PyObject *ghash_pywrap(PyObject *, ghash *, unsigned);
 526 extern int convghash(PyObject *, void *);
 527 extern int convgmhash(PyObject *, void *);
 528
 529 typedef struct gcmac_pyobj {
 530   PyHeapTypeObject ty;
 531   gcmac *cm;
 532 } gcmac_pyobj;
 533
 534 extern PyTypeObject *gcmac_pytype;
 535 #define GCMAC_PYCHECK(o) PyObject_TypeCheck((o), gcmac_pytype)
 536 #define GCMAC_CM(o) (((gcmac_pyobj *)(o))->cm)
 537 #define GCMAC_F(o) (((gcmac_pyobj *)(o))->f)
 538 extern PyObject *gcmac_pywrap(gcmac *);
 539 extern int convgcmac(PyObject *, void *);
 540
 541 typedef struct gmac_pyobj {
 542   PyHeapTypeObject ty;
 543   unsigned f;
 544   gmac *m;
 545 } gmac_pyobj;
 546
 547 extern PyTypeObject *gmac_pytype;
 548 #define GMAC_PYCHECK(o) PyObject_TypeCheck((o), gmac_pytype)
 549 #define GMAC_M(o) (((gmac_pyobj *)(o))->m)
 550 #define GMAC_F(o) (((gmac_pyobj *)(o))->f)
 551 extern PyObject *gmac_pywrap(PyObject *, gmac *, unsigned);
 552 extern int convgmac(PyObject *, void *);
 553
 554 /*----- Key generation ----------------------------------------------------*/
 555
 556 typedef struct pfilt_pyobj {
 557   PyObject_HEAD
 558   pfilt f;
 559   int st;
 560 } pfilt_pyobj;
 561
 562 extern PyTypeObject *pfilt_pytype;
 563 #define PFILT_PYCHECK(o) PyObject_TypeCheck(o, pfilt_pytype)
 564 #define PFILT_F(o) (&((pfilt_pyobj *)(o))->f)
 565 #define PFILT_ST(o) (((pfilt_pyobj *)(o))->st)
 566
 567 typedef struct { pgen_proc *proc; void *ctx; } pgev;
 568 #define PGEV_HEAD PyObject_HEAD pgev pg;
 569
 570 typedef struct pgev_pyobj {
 571   PGEV_HEAD
 572 } pgev_pyobj;
 573
 574 extern PyTypeObject *pgev_pytype;
 575 #define PGEV_PYCHECK(o) PyObject_TypeCheck(o, pgev_pytype)
 576 #define PGEV_PG(o) (&((pgev_pyobj *)(o))->pg)
 577
 578 extern int convpgev(PyObject *, void *);
 579 extern void droppgev(pgev *);
 580 extern void pgenerr(void);
 581
 582 /*----- That's all, folks -------------------------------------------------*/
 583
 584 #ifdef __cplusplus
 585   }
 586 #endif
 587
 588 #endif