3 * Abstract group inteface
5 * (c) 2004 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of the Python interface to Catacomb.
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.
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.
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.
27 /*----- Header files ------------------------------------------------------*/
29 #include "catacomb-python.h"
31 /*----- DH and binary group infos -----------------------------------------*/
33 static PyTypeObject
*fginfo_pytype
, *dhinfo_pytype
, *bindhinfo_pytype
;
35 typedef struct fginfo_pyobj
{
40 #define FGINFO_DP(fg) (&((fginfo_pyobj *)(fg))->dp)
42 static PyObject
*fginfo_pywrap(gprime_param
*dp
, PyTypeObject
*ty
)
44 fginfo_pyobj
*z
= PyObject_New(fginfo_pyobj
, ty
);
46 return ((PyObject
*)z
);
49 static PyObject
*fginfo_pynew(PyTypeObject
*ty
,
50 PyObject
*arg
, PyObject
*kw
)
52 static const char *const kwlist
[] = { "p", "r", "g", 0 };
53 gprime_param dp
= { 0 };
56 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&O&O&:new", KWLIST
,
61 z
= PyObject_New(fginfo_pyobj
, ty
);
63 return ((PyObject
*)z
);
71 static PyObject
*figet_r(PyObject
*me
, void *hunoz
)
72 { return mp_pywrap(MP_COPY(FGINFO_DP(me
)->q
)); }
74 static PyObject
*diget_p(PyObject
*me
, void *hunoz
)
75 { return mp_pywrap(MP_COPY(FGINFO_DP(me
)->p
)); }
77 static PyObject
*diget_g(PyObject
*me
, void *hunoz
)
78 { return mp_pywrap(MP_COPY(FGINFO_DP(me
)->g
)); }
80 static PyObject
*biget_p(PyObject
*me
, void *hunoz
)
81 { return gf_pywrap(MP_COPY(FGINFO_DP(me
)->p
)); }
83 static PyObject
*biget_m(PyObject
*me
, void *hunoz
)
84 { return PyInt_FromLong(mp_octets(FGINFO_DP(me
)->p
) - 1); }
86 static PyObject
*biget_g(PyObject
*me
, void *hunoz
)
87 { return gf_pywrap(MP_COPY(FGINFO_DP(me
)->g
)); }
89 static void fginfo_pydealloc(PyObject
*me
)
91 mp_drop(FGINFO_DP(me
)->p
);
92 mp_drop(FGINFO_DP(me
)->q
);
93 mp_drop(FGINFO_DP(me
)->g
);
97 static PyObject
*dimeth_generate(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
102 grand
*r
= &rand_global
;
103 struct excinfo exc
= EXCINFO_INIT
;
104 pypgev evt
= { { 0 } };
105 static const char *const kwlist
[] =
106 { "pbits", "qbits", "event", "rng", "nsteps", 0 };
110 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&|O&O&O&O&:generate", KWLIST
,
111 convuint
, &pl
, convuint
, &ql
,
112 convpgev
, &evt
, convgrand
, &r
,
115 if (dh_gen(&dp
, ql
, pl
, steps
, r
, evt
.ev
.proc
, evt
.ev
.ctx
))
117 rc
= fginfo_pywrap(&dp
, dhinfo_pytype
);
123 static PyObject
*dimeth_genlimlee(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
128 grand
*r
= &rand_global
;
129 struct excinfo exc
= EXCINFO_INIT
;
130 pypgev oe
= { { 0 } }, ie
= { { 0 } };
133 static const char *const kwlist
[] = {
134 "pbits", "qbits", "event", "ievent",
135 "rng", "nsteps", "subgroupp", 0
139 PyObject
*rc
= 0, *vec
= 0;
141 oe
.exc
= ie
.exc
= &exc
;
142 if (!PyArg_ParseTupleAndKeywords(arg
, kw
,
143 "O&O&|O&O&O&O&O&:genlimlee", KWLIST
,
144 convuint
, &pl
, convuint
, &ql
,
145 convpgev
, &oe
, convpgev
, &ie
,
146 convgrand
, &r
, convuint
, &steps
,
147 convbool
, &subgroupp
))
149 if (subgroupp
) f
|= DH_SUBGROUP
;
150 if (dh_limlee(&dp
, ql
, pl
, f
, steps
, r
,
151 oe
.ev
.proc
, oe
.ev
.ctx
, ie
.ev
.proc
, ie
.ev
.ctx
, &nf
, &v
))
153 vec
= PyList_New(nf
);
154 for (i
= 0; i
< nf
; i
++)
155 PyList_SET_ITEM(vec
, i
, mp_pywrap(v
[i
]));
157 rc
= Py_BuildValue("(NN)", fginfo_pywrap(&dp
, dhinfo_pytype
), vec
);
159 droppgev(&oe
); droppgev(&ie
);
163 static PyObject
*dimeth_genkcdsa(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
168 grand
*r
= &rand_global
;
169 struct excinfo exc
= EXCINFO_INIT
;
170 pypgev evt
= { { 0 } };
171 static const char *const kwlist
[] =
172 { "pbits", "qbits", "event", "rng", "nsteps", 0 };
177 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&O&|O&O&O&:genkcdsa", KWLIST
,
178 convuint
, &pl
, convuint
, &ql
,
179 convpgev
, &evt
, convgrand
, &r
,
182 if (dh_kcdsagen(&dp
, ql
, pl
, 0, steps
, r
, evt
.ev
.proc
, evt
.ev
.ctx
))
184 mp_div(&v
, 0, dp
.p
, dp
.q
);
186 rc
= Py_BuildValue("(NN)", fginfo_pywrap(&dp
, dhinfo_pytype
),
193 static PyObject
*dimeth_gendsa(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
200 struct excinfo exc
= EXCINFO_INIT
;
201 pypgev evt
= { { 0 } };
202 static const char *const kwlist
[] =
203 { "pbits", "qbits", "seed", "event", "nsteps", 0 };
207 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&O&O&|O&O&:gendsa", KWLIST
,
208 convuint
, &pl
, convuint
, &ql
,
210 convpgev
, &evt
, convuint
, &steps
))
212 if (dsa_gen(&dp
, ql
, pl
, steps
, k
.p
, k
.sz
, &ds
, evt
.ev
.proc
, evt
.ev
.ctx
))
214 rc
= Py_BuildValue("(NNl)", fginfo_pywrap(&dp
, dhinfo_pytype
),
215 bytestring_pywrap(ds
.p
, ds
.sz
), (long)ds
.count
);
222 static PyObject
*meth__parse(PyObject
*me
, PyObject
*arg
, PyTypeObject
*ty
,
223 int (*parse
)(qd_parse
*, gprime_param
*))
230 if (!PyArg_ParseTuple(arg
, "s:parse", &p
)) goto end
;
232 if (parse(&qd
, &gp
)) VALERR(qd
.e
);
233 rc
= fginfo_pywrap(&gp
, ty
);
238 static PyObject
*dimeth_parse(PyObject
*me
, PyObject
*arg
)
239 { return (meth__parse(me
, arg
, dhinfo_pytype
, dh_parse
)); }
241 static PyObject
*bimeth_parse(PyObject
*me
, PyObject
*arg
)
242 { return (meth__parse(me
, arg
, bindhinfo_pytype
, dhbin_parse
)); }
244 static const PyGetSetDef fginfo_pygetset
[] = {
245 #define GETSETNAME(op, name) fi##op##_##name
246 GET (r
, "I.r -> group order")
251 static const PyGetSetDef dhinfo_pygetset
[] = {
252 #define GETSETNAME(op, name) di##op##_##name
253 GET (p
, "I.p -> prime")
254 GET (g
, "I.g -> generator")
259 static const PyMethodDef dhinfo_pymethods
[] = {
260 #define METHNAME(name) dimeth_##name
261 SMTH (parse
, "parse(STR) -> D, REST")
263 "generate(PBITS, [qbits = 0], [event = pgen_nullev],\n"
264 " [rng = rand], [nsteps = 0]) -> D")
266 "genlimlee(PBITS, QBITS, [event = pgen_nullev], "
267 "[ievent = pgen_nullev],\n"
268 " [rng = rand], [nsteps = 0], [subgroupp = True]) "
271 "gendsa(PBITS, QBITS, SEED, [event = pgen_nullev], [nsteps = 0])\n"
272 " -> (D, SEED, COUNT)")
274 "gendsa(PBITS, QBITS, [event = pgen_nullev], "
275 "[rng = rand], [nsteps = 0])\n"
281 static const PyGetSetDef bindhinfo_pygetset
[] = {
282 #define GETSETNAME(op, name) bi##op##_##name
283 GET (p
, "I.p -> irreducible polynomial")
284 GET (m
, "I.m -> degree of polynomial")
285 GET (g
, "I.g -> generator")
290 static const PyMethodDef bindhinfo_pymethods
[] = {
291 #define METHNAME(name) bimeth_##name
292 SMTH (parse
, "parse(STR) -> D, REST")
297 static const PyTypeObject fginfo_pytype_skel
= {
298 PyVarObject_HEAD_INIT(0, 0) /* Header */
299 "FGInfo", /* @tp_name@ */
300 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
301 0, /* @tp_itemsize@ */
303 fginfo_pydealloc
, /* @tp_dealloc@ */
305 0, /* @tp_getattr@ */
306 0, /* @tp_setattr@ */
307 0, /* @tp_compare@ */
309 0, /* @tp_as_number@ */
310 0, /* @tp_as_sequence@ */
311 0, /* @tp_as_mapping@ */
315 0, /* @tp_getattro@ */
316 0, /* @tp_setattro@ */
317 0, /* @tp_as_buffer@ */
318 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
322 "Abstract base class for field-group information objects.",
324 0, /* @tp_traverse@ */
326 0, /* @tp_richcompare@ */
327 0, /* @tp_weaklistoffset@ */
329 0, /* @tp_iternext@ */
330 0, /* @tp_methods@ */
331 0, /* @tp_members@ */
332 PYGETSET(fginfo
), /* @tp_getset@ */
335 0, /* @tp_descr_get@ */
336 0, /* @tp_descr_set@ */
337 0, /* @tp_dictoffset@ */
339 PyType_GenericAlloc
, /* @tp_alloc@ */
340 abstract_pynew
, /* @tp_new@ */
345 static const PyTypeObject dhinfo_pytype_skel
= {
346 PyVarObject_HEAD_INIT(0, 0) /* Header */
347 "DHInfo", /* @tp_name@ */
348 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
349 0, /* @tp_itemsize@ */
351 fginfo_pydealloc
, /* @tp_dealloc@ */
353 0, /* @tp_getattr@ */
354 0, /* @tp_setattr@ */
355 0, /* @tp_compare@ */
357 0, /* @tp_as_number@ */
358 0, /* @tp_as_sequence@ */
359 0, /* @tp_as_mapping@ */
363 0, /* @tp_getattro@ */
364 0, /* @tp_setattro@ */
365 0, /* @tp_as_buffer@ */
366 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
370 "DHInfo(P, R, G): standard (integer) Diffie-Hellman group information.",
372 0, /* @tp_traverse@ */
374 0, /* @tp_richcompare@ */
375 0, /* @tp_weaklistoffset@ */
377 0, /* @tp_iternext@ */
378 PYMETHODS(dhinfo
), /* @tp_methods@ */
379 0, /* @tp_members@ */
380 PYGETSET(dhinfo
), /* @tp_getset@ */
383 0, /* @tp_descr_get@ */
384 0, /* @tp_descr_set@ */
385 0, /* @tp_dictoffset@ */
387 PyType_GenericAlloc
, /* @tp_alloc@ */
388 fginfo_pynew
, /* @tp_new@ */
393 static const PyTypeObject bindhinfo_pytype_skel
= {
394 PyVarObject_HEAD_INIT(0, 0) /* Header */
395 "BinDHInfo", /* @tp_name@ */
396 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
397 0, /* @tp_itemsize@ */
399 fginfo_pydealloc
, /* @tp_dealloc@ */
401 0, /* @tp_getattr@ */
402 0, /* @tp_setattr@ */
403 0, /* @tp_compare@ */
405 0, /* @tp_as_number@ */
406 0, /* @tp_as_sequence@ */
407 0, /* @tp_as_mapping@ */
411 0, /* @tp_getattro@ */
412 0, /* @tp_setattro@ */
413 0, /* @tp_as_buffer@ */
414 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
418 "BinDHInfo(P, R, G): binary-field Diffie-Hellman group information.",
420 0, /* @tp_traverse@ */
422 0, /* @tp_richcompare@ */
423 0, /* @tp_weaklistoffset@ */
425 0, /* @tp_iternext@ */
426 PYMETHODS(bindhinfo
), /* @tp_methods@ */
427 0, /* @tp_members@ */
428 PYGETSET(bindhinfo
), /* @tp_getset@ */
431 0, /* @tp_descr_get@ */
432 0, /* @tp_descr_set@ */
433 0, /* @tp_dictoffset@ */
435 PyType_GenericAlloc
, /* @tp_alloc@ */
436 fginfo_pynew
, /* @tp_new@ */
441 /*----- General utilities -------------------------------------------------*/
443 PyTypeObject
*ge_pytype
, *group_pytype
;
444 static PyTypeObject
*primegroup_pytype
, *bingroup_pytype
, *ecgroup_pytype
;
446 group
*group_copy(group
*g
)
448 if (STRCMP(G_NAME(g
), ==, "prime")) {
449 gctx_prime
*gc
= (gctx_prime
*)g
;
451 gp
.g
= G_TOINT(g
, MP_NEW
, g
->g
);
454 g
= group_prime(&gp
);
456 } else if (STRCMP(G_NAME(g
), ==, "bin")) {
457 gctx_bin
*gc
= (gctx_bin
*)g
;
459 gb
.g
= G_TOINT(g
, MP_NEW
, g
->g
);
462 g
= group_binary(&gb
);
464 } else if (STRCMP(G_NAME(g
), ==, "ec")) {
465 gctx_ec
*gc
= (gctx_ec
*)g
;
467 if ((ei
.c
= eccurve_copy(gc
->ei
.c
)) == 0)
470 EC_COPY(&ei
.g
, &gc
->ei
.g
);
471 ei
.r
= MP_COPY(gc
->ei
.r
);
472 ei
.h
= MP_COPY(gc
->ei
.h
);
479 PyObject
*ge_pywrap(PyObject
*gobj
, ge
*x
)
481 ge_pyobj
*z
= PyObject_New(ge_pyobj
, (PyTypeObject
*)gobj
);
483 z
->g
= GROUP_G(gobj
);
485 return ((PyObject
*)z
);
488 static PyObject
*ge_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
490 static const char *const kwlist
[] = { "x", 0 };
500 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O:new", KWLIST
, &x
)) goto end
;
502 if (ECPT_PYCHECK(x
)) {
504 if (G_FROMEC(g
, xx
, &p
))
505 TYERR("can't convert from elliptic curve point");
507 } else if ((y
= tomp(x
)) != 0) {
508 if (G_FROMINT(g
, xx
, y
))
509 TYERR("can't convert from integer");
511 } else if (TEXT_CHECK(x
)) {
512 TEXT_PTRLEN(x
, sc
.buf
, n
); sc
.lim
= sc
.buf
+ n
;
513 if (G_READ(g
, xx
, &mptext_stringops
, &sc
) || sc
.buf
< sc
.lim
)
514 VALERR("malformed group element string");
516 TYERR("can't convert to group element");
517 return (ge_pywrap((PyObject
*)ty
, xx
));
521 if (xx
) G_DESTROY(g
, xx
);
525 static PyObject
*group_dopywrap(PyTypeObject
*ty
, group
*g
)
527 group_pyobj
*gobj
= newtype(ty
, 0, g
->ops
->name
);
529 gobj
->ty
.ht_type
.tp_basicsize
= sizeof(ge_pyobj
);
530 gobj
->ty
.ht_type
.tp_base
= ge_pytype
;
531 Py_INCREF(group_pytype
);
532 gobj
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
533 Py_TPFLAGS_BASETYPE
|
534 Py_TPFLAGS_CHECKTYPES
|
535 Py_TPFLAGS_HEAPTYPE
);
536 gobj
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
537 gobj
->ty
.ht_type
.tp_free
= 0;
538 gobj
->ty
.ht_type
.tp_new
= ge_pynew
;
539 typeready(&gobj
->ty
.ht_type
);
540 return ((PyObject
*)gobj
);
543 PyObject
*group_pywrap(group
*g
)
547 if (STRCMP(G_NAME(g
), ==, "prime")) ty
= primegroup_pytype
;
548 else if (STRCMP(G_NAME(g
), ==, "bin")) ty
= bingroup_pytype
;
549 else if (STRCMP(G_NAME(g
), ==, "ec")) ty
= ecgroup_pytype
;
551 return (group_dopywrap(ty
, g
));
554 /*----- Group elements ----------------------------------------------------*/
556 #define BINOP(name) \
557 static PyObject *ge_py##name(PyObject *x, PyObject *y) \
561 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) || \
562 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y)))) \
566 g->ops->name(g, z, GE_X(x), GE_X(y)); \
567 return (ge_pywrap(GE_GOBJ(x), z)); \
574 static PyObject *gemeth_##name(PyObject *me) \
580 g->ops->name(g, z, GE_X(me)); \
581 return (ge_pywrap(GE_GOBJ(me), z)); \
587 static PyObject
*ge_pyexp(PyObject
*x
, PyObject
*n
, PyObject
*m
)
592 if (m
!= Py_None
|| !GE_PYCHECK(x
) || (nn
= getmp(n
)) == 0)
594 z
= G_CREATE(GE_G(x
));
595 G_EXP(GE_G(x
), z
, GE_X(x
), nn
);
597 return (ge_pywrap(GE_GOBJ(x
), z
));
600 static void ge_pydealloc(PyObject
*me
)
602 G_DESTROY(GE_G(me
), GE_X(me
));
603 Py_DECREF(GE_GOBJ(me
));
607 static void group_pydealloc(PyObject
*me
)
609 G_DESTROYGROUP(GROUP_G(me
));
610 PyType_Type
.tp_dealloc(me
);
613 static PyObject
*gmexp_id(PyObject
*me
)
615 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
616 G_COPY(g
, x
, g
->i
); return (ge_pywrap(me
, x
));
619 static int gmexp_fill(void *pp
, PyObject
*me
, PyObject
*x
, PyObject
*m
)
621 group_expfactor
*f
= pp
;
623 if (!GE_PYCHECK(x
) || GE_G(x
) != GROUP_G(me
) || (f
->exp
= getmp(m
)) == 0)
629 static PyObject
*ge_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
634 if (!GE_PYCHECK(x
) || !GE_PYCHECK(y
) ||
635 (GE_G(x
) != GE_G(y
) && !group_samep(GE_G(x
), GE_G(y
))))
638 case Py_EQ
: b
= G_EQ(GE_G(x
), GE_X(x
), GE_X(y
)); break;
639 case Py_NE
: b
= !G_EQ(GE_G(x
), GE_X(x
), GE_X(y
)); break;
640 default: TYERR("group elements are unordered");
647 static PyObject
*gemeth_check(PyObject
*me
)
649 if (group_check(GE_G(me
), GE_X(me
))) VALERR("bad group element");
655 static int ge_pynonzerop(PyObject
*x
)
656 { return (!G_IDENTP(GE_G(x
), GE_X(x
))); }
658 static PyObject
*ge_pystr(PyObject
*me
)
663 group_writedstr(GE_G(me
), GE_X(me
), &d
);
664 rc
= TEXT_FROMSTRLEN(d
.buf
, d
.len
);
670 static PyObject
*ge_pylong(PyObject
*me
)
675 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
676 TYERR("can't convert to integer");
684 static PyObject
*ge_pyint(PyObject
*me
)
690 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
691 TYERR("can't convert to integer");
692 if (!mp_tolong_checked(x
, &l
, 0)) rc
= PyInt_FromLong(l
);
693 else rc
= mp_topylong(x
);
699 static PyObject
*gemeth_toint(PyObject
*me
)
703 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
704 TYERR("can't convert to integer");
705 return (mp_pywrap(x
));
710 static PyObject
*gemeth_toec(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
712 static const char *const kwlist
[] = { "curve", 0 };
713 PyTypeObject
*cty
= 0;
719 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O:toec", KWLIST
,
721 g
= GROUP_G(GE_GOBJ(me
));
723 if (!PyType_Check(cty
) || !PyType_IsSubtype(cty
, ecpt_pytype
))
724 TYERR("want subtype of catacomb.ECPt");
725 Py_INCREF((PyObject
*)cty
);
726 } else if (STRCMP(G_NAME(g
), ==, "ec")) {
727 c
= eccurve_copy(((gctx_ec
*)g
)->ei
.c
);
728 cty
= (PyTypeObject
*)eccurve_pywrap(0, c
);
731 Py_INCREF((PyObject
*)cty
);
733 if (G_TOEC(GE_G(me
), &p
, GE_X(me
))) {
734 Py_DECREF((PyObject
*)cty
);
735 TYERR("can't convert to ec point");
737 rc
= ecpt_pywrapout(cty
, &p
);
738 Py_DECREF((PyObject
*)cty
);
743 static PyObject
*gemeth_tobuf(PyObject
*me
)
749 n
= GE_G(me
)->noctets
+ 4;
750 rc
= bytestring_pywrap(0, n
);
751 buf_init(&b
, BIN_PTR(rc
), n
);
752 G_TOBUF(GE_G(me
), &b
, GE_X(me
));
754 BIN_SETLEN(rc
, BLEN(&b
));
758 static PyObject
*gemeth_toraw(PyObject
*me
)
764 n
= GE_G(me
)->noctets
;
765 rc
= bytestring_pywrap(0, n
);
766 buf_init(&b
, BIN_PTR(rc
), n
);
767 G_TORAW(GE_G(me
), &b
, GE_X(me
));
769 BIN_SETLEN(rc
, BLEN(&b
));
773 static PyObject
*gmexp_exp(PyObject
*me
, void *pp
, int n
)
775 ge
*z
= G_CREATE(GROUP_G(me
));
776 G_MEXP(GROUP_G(me
), z
, pp
, n
);
777 return (ge_pywrap(me
, z
));
780 static void gmexp_drop(void *pp
)
782 group_expfactor
*f
= pp
;
786 static PyObject
*gmeth_mexp(PyObject
*me
, PyObject
*arg
)
788 return (mexp_common(me
, arg
, sizeof(group_expfactor
),
789 gmexp_id
, gmexp_fill
, gmexp_exp
, gmexp_drop
));
792 static PyObject
*gmeth_checkgroup(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
794 static const char *const kwlist
[] = { "rng", 0 };
795 grand
*r
= &rand_global
;
798 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:checkgroup", KWLIST
,
801 if ((p
= G_CHECK(GROUP_G(me
), r
)) != 0)
808 static PyObject
*group_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
810 int b
= group_samep(GROUP_G(x
), GROUP_G(y
));
814 default: TYERR("can't order groups");
821 static PyObject
*gemeth_frombuf(PyObject
*me
, PyObject
*arg
)
828 if (!PyArg_ParseTuple(arg
, "O&:frombuf", convbin
, &in
)) return (0);
830 buf_init(&b
, (/*unconst*/ void *)in
.p
, in
.sz
);
832 if (G_FROMBUF(g
, &b
, x
)) VALERR("invalid data");
833 return (Py_BuildValue("(NN)", ge_pywrap(me
, x
), bytestring_pywrapbuf(&b
)));
835 if (x
) G_DESTROY(g
, x
);
839 static PyObject
*gemeth_fromraw(PyObject
*me
, PyObject
*arg
)
846 if (!PyArg_ParseTuple(arg
, "O&:fromraw", convbin
, &in
)) return (0);
848 buf_init(&b
, (/*unconst*/ void *)in
.p
, in
.sz
);
850 if (G_FROMRAW(g
, &b
, x
)) VALERR("invalid data");
851 return (Py_BuildValue("(NN)", ge_pywrap(me
, x
), bytestring_pywrapbuf(&b
)));
853 if (x
) G_DESTROY(g
, x
);
857 static PyObject
*gemeth_fromstring(PyObject
*me
, PyObject
*arg
)
865 if (!PyArg_ParseTuple(arg
, "s#:fromstring", &p
, &n
)) return (0);
870 if (G_READ(g
, x
, &mptext_stringops
, &sc
))
871 VALERR("bad group element string");
872 return (Py_BuildValue("(Ns#)", ge_pywrap(me
, x
),
873 sc
.buf
, (Py_ssize_t
)(sc
.lim
- sc
.buf
)));
875 if (x
) G_DESTROY(g
, x
);
879 static PyObject
*gmeth_parse(PyObject
*me
, PyObject
*arg
)
885 if (!PyArg_ParseTuple(arg
, "s:parse", &p
)) goto end
;
887 if ((g
= group_parse(&qd
)) == 0) VALERR(qd
.e
);
888 return (group_pywrap(g
));
893 static PyObject
*geget_group(PyObject
*me
, void *hunoz
)
894 { RETURN_OBJ(GE_GOBJ(me
)); }
896 static PyObject
*gget_nbits(PyObject
*me
, void *hunoz
)
897 { return (PyInt_FromLong(GROUP_G(me
)->nbits
)); }
899 static PyObject
*gget_noctets(PyObject
*me
, void *hunoz
)
900 { return (PyInt_FromLong(GROUP_G(me
)->noctets
)); }
902 static PyObject
*gget_i(PyObject
*me
, void *hunoz
)
904 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
905 G_COPY(g
, x
, g
->i
); return (ge_pywrap(me
, x
));
908 static PyObject
*gget_g(PyObject
*me
, void *hunoz
)
910 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
911 G_COPY(g
, x
, g
->g
); return (ge_pywrap(me
, x
));
914 static Py_hash_t
ge_pyhash(PyObject
*me
)
917 size_t sz
= GE_G(me
)->noctets
+ 4;
918 uint32 h
= 0xf672c776 + GE_G(me
)->ops
->ty
;
919 octet
*p
= xmalloc(sz
);
921 G_TOBUF(GE_G(me
), &b
, GE_X(me
));
923 h
= unihash_hash(&unihash_global
, h
, BBASE(&b
), BLEN(&b
));
925 return (h
% LONG_MAX
);
928 static PyObject
*gget_r(PyObject
*me
, void *hunoz
)
929 { return (mp_pywrap(MP_COPY(GROUP_G(me
)->r
))); }
931 static PyObject
*gget_h(PyObject
*me
, void *hunoz
)
932 { return (mp_pywrap(MP_COPY(GROUP_G(me
)->h
))); }
934 static const PyGetSetDef ge_pygetset
[] = {
935 #define GETSETNAME(op, name) ge##op##_##name
936 GET (group
, "X.group -> group containing X")
941 static const PyMethodDef ge_pymethods
[] = {
942 #define METHNAME(name) gemeth_##name
943 NAMETH(inv
, "X.inv() -> inverse element of X")
944 NAMETH(sqr
, "X.sqr() -> X^2 = X * X")
945 NAMETH(check
, "X.check() -> check X really belongs to its group")
946 NAMETH(toint
, "X.toint() -> X converted to an integer")
947 KWMETH(toec
, "X.toec([curve = ECPt]) -> "
948 "X converted to elliptic curve point")
949 NAMETH(tobuf
, "X.tobuf() -> X in buffer representation")
950 NAMETH(toraw
, "X.toraw() -> X in raw representation")
951 CMTH (frombuf
, "frombuf(BUF) -> X, REST")
952 CMTH (fromraw
, "fromraw(BUF) -> X, REST")
953 CMTH (fromstring
, "fromstring(STR) -> X, REST")
958 static const PyNumberMethods ge_pynumber
= {
960 0, /* @nb_subtract@ */
961 ge_pymul
, /* @nb_multiply@ */
963 ge_pydiv
, /* @nb_divide@ */
965 0, /* @nb_remainder@ */
967 ge_pyexp
, /* @nb_power@ */
968 0, /* @nb_negative@ */
969 0, /* @nb_positive@ */
970 0, /* @nb_absolute@ */
971 ge_pynonzerop
, /* @nb_nonzero@ */
981 ge_pyint
, /* @nb_int@ */
982 PY23(ge_pylong
, 0), /* @nb_long@ */
983 0 /* meaningless */, /* @nb_float@ */
989 0, /* @nb_inplace_add@ */
990 0, /* @nb_inplace_subtract@ */
991 0, /* @nb_inplace_multiply@ */
993 0, /* @nb_inplace_divide@ */
995 0, /* @nb_inplace_remainder@ */
996 0, /* @nb_inplace_power@ */
997 0, /* @nb_inplace_lshift@ */
998 0, /* @nb_inplace_rshift@ */
999 0, /* @nb_inplace_and@ */
1000 0, /* @nb_inplace_xor@ */
1001 0, /* @nb_inplace_or@ */
1003 0, /* @nb_floor_divide@ */
1004 ge_pydiv
, /* @nb_true_divide@ */
1005 0, /* @nb_inplace_floor_divide@ */
1006 0, /* @nb_inplace_true_divide@ */
1009 static const PyTypeObject ge_pytype_skel
= {
1010 PyVarObject_HEAD_INIT(0, 0) /* Header */
1011 "GE", /* @tp_name@ */
1012 sizeof(ge_pyobj
), /* @tp_basicsize@ */
1013 0, /* @tp_itemsize@ */
1015 ge_pydealloc
, /* @tp_dealloc@ */
1017 0, /* @tp_getattr@ */
1018 0, /* @tp_setattr@ */
1019 0, /* @tp_compare@ */
1021 PYNUMBER(ge
), /* @tp_as_number@ */
1022 0, /* @tp_as_sequence@ */
1023 0, /* @tp_as_mapping@ */
1024 ge_pyhash
, /* @tp_hash@ */
1026 ge_pystr
, /* @tp_str@ */
1027 0, /* @tp_getattro@ */
1028 0, /* @tp_setattro@ */
1029 0, /* @tp_as_buffer@ */
1030 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1031 Py_TPFLAGS_CHECKTYPES
|
1032 Py_TPFLAGS_BASETYPE
,
1035 "Group elements, abstract base class.",
1037 0, /* @tp_traverse@ */
1039 ge_pyrichcompare
, /* @tp_richcompare@ */
1040 0, /* @tp_weaklistoffset@ */
1042 0, /* @tp_iternext@ */
1043 PYMETHODS(ge
), /* @tp_methods@ */
1044 0, /* @tp_members@ */
1045 PYGETSET(ge
), /* @tp_getset@ */
1048 0, /* @tp_descr_get@ */
1049 0, /* @tp_descr_set@ */
1050 0, /* @tp_dictoffset@ */
1052 PyType_GenericAlloc
, /* @tp_alloc@ */
1053 abstract_pynew
, /* @tp_new@ */
1058 static const PyGetSetDef group_pygetset
[] = {
1059 #define GETSETNAME(op, name) g##op##_##name
1060 GET (noctets
, "G.noctets -> size in octets of element")
1061 GET (nbits
, "G.nbits -> size in bits of element")
1062 GET (i
, "G.i -> group identity")
1063 GET (g
, "G.g -> group generator")
1064 GET (r
, "G.r -> group order")
1065 GET (h
, "G.h -> group cofactor")
1070 static const PyMethodDef group_pymethods
[] = {
1071 #define METHNAME(name) gmeth_##name
1072 METH (mexp
, "G.mexp([(X0, N0), (X1, N1), ...]) -> X0^N0 X1^N1 ...")
1073 KWMETH(checkgroup
, "G.checkgroup([rng = rand]): check group is good")
1074 SMTH (parse
, "parse(STR) -> G, REST")
1079 static const PyTypeObject group_pytype_skel
= {
1080 PyVarObject_HEAD_INIT(0, 0) /* Header */
1081 "Group", /* @tp_name@ */
1082 sizeof(group_pyobj
), /* @tp_basicsize@ */
1083 0, /* @tp_itemsize@ */
1085 group_pydealloc
, /* @tp_dealloc@ */
1087 0, /* @tp_getattr@ */
1088 0, /* @tp_setattr@ */
1089 0, /* @tp_compare@ */
1091 0, /* @tp_as_number@ */
1092 0, /* @tp_as_sequence@ */
1093 0, /* @tp_as_mapping@ */
1097 0, /* @tp_getattro@ */
1098 0, /* @tp_setattro@ */
1099 0, /* @tp_as_buffer@ */
1100 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1101 Py_TPFLAGS_BASETYPE
,
1104 "Abstract base class for groups.",
1106 0, /* @tp_traverse@ */
1108 group_pyrichcompare
, /* @tp_richcompare@ */
1109 0, /* @tp_weaklistoffset@ */
1111 0, /* @tp_iternext@ */
1112 PYMETHODS(group
), /* @tp_methods@ */
1113 0, /* @tp_members@ */
1114 PYGETSET(group
), /* @tp_getset@ */
1117 0, /* @tp_descr_get@ */
1118 0, /* @tp_descr_set@ */
1119 0, /* @tp_dictoffset@ */
1121 PyType_GenericAlloc
, /* @tp_alloc@ */
1122 abstract_pynew
, /* @tp_new@ */
1127 static PyObject
*pgget_info(PyObject
*me
, void *hunoz
)
1130 gctx_prime
*gg
= (gctx_prime
*)GROUP_G(me
);
1131 dp
.p
= MP_COPY(gg
->mm
.m
);
1132 dp
.q
= MP_COPY(gg
->g
.r
);
1133 dp
.g
= mpmont_reduce(&gg
->mm
, MP_NEW
, gg
->gen
.x
);
1134 return (fginfo_pywrap(&dp
, dhinfo_pytype
));
1137 static const PyGetSetDef primegroup_pygetset
[] = {
1138 #define GETSETNAME(op, name) pg##op##_##name
1139 GET (info
, "G.info -> information about the group")
1144 static PyObject
*primegroup_pynew(PyTypeObject
*ty
,
1145 PyObject
*arg
, PyObject
*kw
)
1148 static const char *const kwlist
[] = { "info", 0 };
1150 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", KWLIST
,
1153 return (group_dopywrap(ty
, group_prime(FGINFO_DP(i
))));
1156 static const PyTypeObject primegroup_pytype_skel
= {
1157 PyVarObject_HEAD_INIT(0, 0) /* Header */
1158 "PrimeGroup", /* @tp_name@ */
1159 sizeof(group_pyobj
), /* @tp_basicsize@ */
1160 0, /* @tp_itemsize@ */
1162 group_pydealloc
, /* @tp_dealloc@ */
1164 0, /* @tp_getattr@ */
1165 0, /* @tp_setattr@ */
1166 0, /* @tp_compare@ */
1168 0, /* @tp_as_number@ */
1169 0, /* @tp_as_sequence@ */
1170 0, /* @tp_as_mapping@ */
1174 0, /* @tp_getattro@ */
1175 0, /* @tp_setattro@ */
1176 0, /* @tp_as_buffer@ */
1177 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1178 Py_TPFLAGS_BASETYPE
,
1181 "PrimeGroup(INFO): subgroups of prime fields.",
1183 0, /* @tp_traverse@ */
1185 0, /* @tp_richcompare@ */
1186 0, /* @tp_weaklistoffset@ */
1188 0, /* @tp_iternext@ */
1189 0, /* @tp_methods@ */
1190 0, /* @tp_members@ */
1191 PYGETSET(primegroup
), /* @tp_getset@ */
1194 0, /* @tp_descr_get@ */
1195 0, /* @tp_descr_set@ */
1196 0, /* @tp_dictoffset@ */
1198 PyType_GenericAlloc
, /* @tp_alloc@ */
1199 primegroup_pynew
, /* @tp_new@ */
1204 static PyObject
*bgget_info(PyObject
*me
, void *hunoz
)
1207 gctx_bin
*gg
= (gctx_bin
*)GROUP_G(me
);
1208 dp
.p
= MP_COPY(gg
->r
.p
);
1209 dp
.q
= MP_COPY(gg
->g
.r
);
1210 dp
.g
= MP_COPY(gg
->gen
.x
);
1211 return (fginfo_pywrap(&dp
, bindhinfo_pytype
));
1214 static const PyGetSetDef bingroup_pygetset
[] = {
1215 #define GETSETNAME(op, name) bg##op##_##name
1216 GET (info
, "G.info -> information about the group")
1221 static PyObject
*bingroup_pynew(PyTypeObject
*ty
,
1222 PyObject
*arg
, PyObject
*kw
)
1225 static const char *const kwlist
[] = { "info", 0 };
1227 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", KWLIST
,
1228 bindhinfo_pytype
, &i
))
1230 return (group_dopywrap(ty
, group_binary(FGINFO_DP(i
))));
1233 static const PyTypeObject bingroup_pytype_skel
= {
1234 PyVarObject_HEAD_INIT(0, 0) /* Header */
1235 "BinGroup", /* @tp_name@ */
1236 sizeof(group_pyobj
), /* @tp_basicsize@ */
1237 0, /* @tp_itemsize@ */
1239 group_pydealloc
, /* @tp_dealloc@ */
1241 0, /* @tp_getattr@ */
1242 0, /* @tp_setattr@ */
1243 0, /* @tp_compare@ */
1245 0, /* @tp_as_number@ */
1246 0, /* @tp_as_sequence@ */
1247 0, /* @tp_as_mapping@ */
1251 0, /* @tp_getattro@ */
1252 0, /* @tp_setattro@ */
1253 0, /* @tp_as_buffer@ */
1254 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1255 Py_TPFLAGS_BASETYPE
,
1258 "BinGroup(INFO): subgroups of binary fields.",
1260 0, /* @tp_traverse@ */
1262 0, /* @tp_richcompare@ */
1263 0, /* @tp_weaklistoffset@ */
1265 0, /* @tp_iternext@ */
1266 0, /* @tp_methods@ */
1267 0, /* @tp_members@ */
1268 PYGETSET(bingroup
), /* @tp_getset@ */
1271 0, /* @tp_descr_get@ */
1272 0, /* @tp_descr_set@ */
1273 0, /* @tp_dictoffset@ */
1275 PyType_GenericAlloc
, /* @tp_alloc@ */
1276 bingroup_pynew
, /* @tp_new@ */
1281 static PyObject
*egget_info(PyObject
*me
, void *hunoz
)
1284 gctx_ec
*gg
= (gctx_ec
*)GROUP_G(me
);
1286 ecinfo_copy(&ei
, &gg
->ei
);
1287 return (ecinfo_pywrap(&ei
));
1290 static const PyGetSetDef ecgroup_pygetset
[] = {
1291 #define GETSETNAME(op, name) eg##op##_##name
1292 GET (info
, "G.info -> information about the group")
1297 static PyObject
*ecgroup_pynew(PyTypeObject
*ty
,
1298 PyObject
*arg
, PyObject
*kw
)
1302 static const char *const kwlist
[] = { "info", 0 };
1304 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", KWLIST
,
1307 ecinfo_copy(&ei
, ECINFO_EI(i
));
1308 return (group_dopywrap(ty
, group_ec(&ei
)));
1311 static const PyTypeObject ecgroup_pytype_skel
= {
1312 PyVarObject_HEAD_INIT(0, 0) /* Header */
1313 "ECGroup", /* @tp_name@ */
1314 sizeof(group_pyobj
), /* @tp_basicsize@ */
1315 0, /* @tp_itemsize@ */
1317 group_pydealloc
, /* @tp_dealloc@ */
1319 0, /* @tp_getattr@ */
1320 0, /* @tp_setattr@ */
1321 0, /* @tp_compare@ */
1323 0, /* @tp_as_number@ */
1324 0, /* @tp_as_sequence@ */
1325 0, /* @tp_as_mapping@ */
1329 0, /* @tp_getattro@ */
1330 0, /* @tp_setattro@ */
1331 0, /* @tp_as_buffer@ */
1332 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1333 Py_TPFLAGS_BASETYPE
,
1336 "ECGroup(INFO): elliptic curve groups.",
1338 0, /* @tp_traverse@ */
1340 0, /* @tp_richcompare@ */
1341 0, /* @tp_weaklistoffset@ */
1343 0, /* @tp_iternext@ */
1344 0, /* @tp_methods@ */
1345 0, /* @tp_members@ */
1346 PYGETSET(ecgroup
), /* @tp_getset@ */
1349 0, /* @tp_descr_get@ */
1350 0, /* @tp_descr_set@ */
1351 0, /* @tp_dictoffset@ */
1353 PyType_GenericAlloc
, /* @tp_alloc@ */
1354 ecgroup_pynew
, /* @tp_new@ */
1359 /*----- Global stuff ------------------------------------------------------*/
1361 void group_pyinit(void)
1363 INITTYPE(fginfo
, root
);
1364 INITTYPE(dhinfo
, fginfo
);
1365 INITTYPE(bindhinfo
, dhinfo
);
1367 INITTYPE(group
, type
);
1368 INITTYPE(primegroup
, group
);
1369 INITTYPE(bingroup
, group
);
1370 INITTYPE(ecgroup
, group
);
1373 static const char *grp_namefn(const void *p
)
1374 { const pentry
*pt
= p
; return (pt
->name
); }
1376 static int grp_ixfn(const pentry
*tab
, const pentry
*pt
)
1380 for (i
= 0; tab
[i
].name
; i
++)
1381 if (tab
[i
].data
== pt
->data
) return (i
);
1384 static int pgrp_ixfn(const void *p
) { return (grp_ixfn(ptab
, p
)); }
1385 static int bgrp_ixfn(const void *p
) { return (grp_ixfn(bintab
, p
)); }
1387 static PyObject
*grp_valfn(const pentry
*tab
, PyTypeObject
*ty
, int i
)
1391 dh_infofromdata(&gp
, tab
[i
].data
);
1392 return (fginfo_pywrap(&gp
, ty
));
1394 static PyObject
*pgrp_valfn(int i
)
1395 { return (grp_valfn(ptab
, dhinfo_pytype
, i
)); }
1396 static PyObject
*bgrp_valfn(int i
)
1397 { return (grp_valfn(bintab
, bindhinfo_pytype
, i
)); }
1399 void group_pyinsert(PyObject
*mod
)
1401 INSERT("FGInfo", fginfo_pytype
);
1402 INSERT("DHInfo", dhinfo_pytype
);
1403 INSERT("BinDHInfo", bindhinfo_pytype
);
1404 INSERT("GE", ge_pytype
);
1405 INSERT("Group", group_pytype
);
1406 INSERT("PrimeGroup", primegroup_pytype
);
1407 INSERT("BinGroup", bingroup_pytype
);
1408 INSERT("ECGroup", ecgroup_pytype
);
1409 INSERT("primegroups", make_grouptab(ptab
, sizeof(*ptab
),
1410 grp_namefn
, pgrp_ixfn
, pgrp_valfn
));
1411 INSERT("bingroups", make_grouptab(bintab
, sizeof(*bintab
),
1412 grp_namefn
, bgrp_ixfn
, bgrp_valfn
));
1415 /*----- That's all, folks -------------------------------------------------*/