5 * Abstract group inteface
7 * (c) 2004 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of the Python interface to Catacomb.
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.
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.
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.
29 /*----- Header files ------------------------------------------------------*/
31 #include "catacomb-python.h"
33 /*----- DH and binary group infos -----------------------------------------*/
35 PyObject
*fginfo_pywrap(gprime_param
*dp
, PyTypeObject
*ty
)
37 fginfo_pyobj
*z
= PyObject_New(fginfo_pyobj
, ty
);
38 z
->dp
.p
= MP_COPY(dp
->p
);
39 z
->dp
.q
= MP_COPY(dp
->q
);
40 z
->dp
.g
= MP_COPY(dp
->g
);
41 return ((PyObject
*)z
);
44 static PyObject
*fginfo_pynew(PyTypeObject
*ty
,
45 PyObject
*arg
, PyObject
*kw
)
47 char *kwlist
[] = { "p", "r", "g", 0 };
48 gprime_param dp
= { 0 };
51 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&O&O&:new", kwlist
,
56 z
= PyObject_New(fginfo_pyobj
, ty
);
58 return ((PyObject
*)z
);
66 static PyObject
*figet_r(PyObject
*me
, void *hunoz
)
67 { return mp_pywrap(FGINFO_DP(me
)->q
); }
69 static PyObject
*diget_p(PyObject
*me
, void *hunoz
)
70 { return mp_pywrap(FGINFO_DP(me
)->p
); }
72 static PyObject
*diget_g(PyObject
*me
, void *hunoz
)
73 { return mp_pywrap(FGINFO_DP(me
)->g
); }
75 static PyObject
*biget_p(PyObject
*me
, void *hunoz
)
76 { return gf_pywrap(FGINFO_DP(me
)->p
); }
78 static PyObject
*biget_m(PyObject
*me
, void *hunoz
)
79 { return PyInt_FromLong(mp_octets(FGINFO_DP(me
)->p
) - 1); }
81 static PyObject
*biget_g(PyObject
*me
, void *hunoz
)
82 { return gf_pywrap(FGINFO_DP(me
)->g
); }
84 static void fginfo_pydealloc(PyObject
*me
)
86 mp_drop(FGINFO_DP(me
)->p
);
87 mp_drop(FGINFO_DP(me
)->q
);
88 mp_drop(FGINFO_DP(me
)->g
);
92 static PyObject
*meth__DHInfo_generate(PyObject
*me
,
93 PyObject
*arg
, PyObject
*kw
)
98 grand
*r
= &rand_global
;
101 { "class", "pbits", "qbits", "event", "rng", "nsteps", 0 };
104 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "OO&|O&O&O&O&:generate", kwlist
,
105 &me
, convuint
, &pl
, convuint
, &ql
,
106 convpgev
, &evt
, convgrand
, &r
,
109 if (dh_gen(&dp
, ql
, pl
, steps
, r
, evt
.proc
, evt
.ctx
))
111 rc
= fginfo_pywrap(&dp
, dhinfo_pytype
);
117 static PyObject
*meth__DHInfo_genlimlee(PyObject
*me
,
118 PyObject
*arg
, PyObject
*kw
)
123 grand
*r
= &rand_global
;
124 pgev oe
= { 0 }, ie
= { 0 };
127 char *kwlist
[] = { "class", "pbits", "qbits", "event", "ievent",
128 "rng", "nsteps", "subgroupp", 0 };
131 PyObject
*rc
= 0, *vec
= 0;
133 if (!PyArg_ParseTupleAndKeywords(arg
, kw
,
134 "OO&O&|O&O&O&O&O&:genlimlee", kwlist
,
135 &me
, convuint
, &pl
, convuint
, &ql
,
136 convpgev
, &oe
, convpgev
, &ie
,
137 convgrand
, &r
, convuint
, &steps
,
138 convbool
, &subgroupp
))
140 if (subgroupp
) f
|= DH_SUBGROUP
;
141 if (dh_limlee(&dp
, ql
, pl
, f
, steps
, r
,
142 oe
.proc
, oe
.ctx
, ie
.proc
, ie
.ctx
, &nf
, &v
))
144 vec
= PyList_New(nf
);
145 for (i
= 0; i
< nf
; i
++)
146 PyList_SetItem(vec
, i
, mp_pywrap(v
[i
]));
148 rc
= Py_BuildValue("(NN)", fginfo_pywrap(&dp
, dhinfo_pytype
), vec
);
150 droppgev(&oe
); droppgev(&ie
);
154 static PyObject
*meth__DHInfo_gendsa(PyObject
*me
,
155 PyObject
*arg
, PyObject
*kw
)
165 { "class", "pbits", "qbits", "seed", "event", "nsteps", 0 };
168 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "OO&O&s#|O&O&:gendsa", kwlist
,
169 &me
, convuint
, &pl
, convuint
, &ql
,
170 &k
, &ksz
, convpgev
, &evt
,
173 if (dsa_gen(&dp
, ql
, pl
, steps
, k
, ksz
, &ds
, evt
.proc
, evt
.ctx
))
175 rc
= Py_BuildValue("(NNl)", fginfo_pywrap(&dp
, dhinfo_pytype
),
176 bytestring_pywrap(ds
.p
, ds
.sz
), (long)ds
.count
);
183 static int npgroups
= -1, nbingroups
= -1;
185 static PyObject
*namedgroups(const pentry
*pp
, int *ne
)
192 for (i
= 0; pp
[i
].name
; i
++) {
194 for (j
= 0; j
< i
; j
++) {
195 if (pp
[i
].data
== pp
[j
].data
) {
196 c
= PyDict_GetItemString(d
, (/*unconst*/ char *)pp
[j
].name
);
201 c
= PyInt_FromLong(i
);
203 PyDict_SetItemString(d
, (/*unconst*/ char *)pp
[i
].name
, c
);
210 static PyObject
*meth__groupn(PyObject
*me
, PyObject
*arg
,
211 PyTypeObject
*ty
, const pentry
*pp
, int ne
)
217 if (!PyArg_ParseTuple(arg
, "Oi:_groupn", &me
, &i
)) goto end
;
218 if (i
< 0 || i
>= ne
) VALERR("group index out of range");
219 dh_infofromdata(&gp
, pp
[i
].data
);
220 rc
= fginfo_pywrap(&gp
, ty
);
225 static PyObject
*meth__DHInfo__groupn(PyObject
*me
, PyObject
*arg
)
226 { return (meth__groupn(me
, arg
, dhinfo_pytype
, ptab
, npgroups
)); }
228 static PyObject
*meth__BinDHInfo__groupn(PyObject
*me
, PyObject
*arg
)
229 { return (meth__groupn(me
, arg
, bindhinfo_pytype
, bintab
, nbingroups
)); }
231 static PyObject
*meth__parse(PyObject
*me
, PyObject
*arg
, PyTypeObject
*ty
,
232 int (*parse
)(qd_parse
*, gprime_param
*))
239 if (!PyArg_ParseTuple(arg
, "Os:parse", &me
, &p
)) goto end
;
242 if (parse(&qd
, &gp
)) SYNERR(qd
.e
);
243 rc
= fginfo_pywrap(&gp
, ty
);
248 static PyObject
*meth__DHInfo_parse(PyObject
*me
, PyObject
*arg
)
249 { return (meth__parse(me
, arg
, dhinfo_pytype
, dh_parse
)); }
251 static PyObject
*meth__BinDHInfo_parse(PyObject
*me
, PyObject
*arg
)
252 { return (meth__parse(me
, arg
, bindhinfo_pytype
, dhbin_parse
)); }
254 static PyGetSetDef fginfo_pygetset
[] = {
255 #define GETSETNAME(op, name) fi##op##_##name
256 GET (r
, "I.r -> group order")
261 static PyGetSetDef dhinfo_pygetset
[] = {
262 #define GETSETNAME(op, name) di##op##_##name
263 GET (p
, "I.p -> prime")
264 GET (g
, "I.g -> generator")
269 static PyGetSetDef bindhinfo_pygetset
[] = {
270 #define GETSETNAME(op, name) bi##op##_##name
271 GET (p
, "I.p -> irreducible polynomial")
272 GET (m
, "I.m -> degree of polynomial")
273 GET (g
, "I.g -> generator")
278 static PyTypeObject fginfo_pytype_skel
= {
279 PyObject_HEAD_INIT(0) 0, /* Header */
280 "catacomb.FGInfo", /* @tp_name@ */
281 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
282 0, /* @tp_itemsize@ */
284 fginfo_pydealloc
, /* @tp_dealloc@ */
286 0, /* @tp_getattr@ */
287 0, /* @tp_setattr@ */
288 0, /* @tp_compare@ */
290 0, /* @tp_as_number@ */
291 0, /* @tp_as_sequence@ */
292 0, /* @tp_as_mapping@ */
296 0, /* @tp_getattro@ */
297 0, /* @tp_setattro@ */
298 0, /* @tp_as_buffer@ */
299 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
303 "Abstract base class for field-group information objects.",
305 0, /* @tp_traverse@ */
307 0, /* @tp_richcompare@ */
308 0, /* @tp_weaklistoffset@ */
310 0, /* @tp_iternext@ */
311 0, /* @tp_methods@ */
312 0, /* @tp_members@ */
313 fginfo_pygetset
, /* @tp_getset@ */
316 0, /* @tp_descr_get@ */
317 0, /* @tp_descr_set@ */
318 0, /* @tp_dictoffset@ */
320 PyType_GenericAlloc
, /* @tp_alloc@ */
321 abstract_pynew
, /* @tp_new@ */
326 static PyTypeObject dhinfo_pytype_skel
= {
327 PyObject_HEAD_INIT(0) 0, /* Header */
328 "catacomb.DHInfo", /* @tp_name@ */
329 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
330 0, /* @tp_itemsize@ */
332 fginfo_pydealloc
, /* @tp_dealloc@ */
334 0, /* @tp_getattr@ */
335 0, /* @tp_setattr@ */
336 0, /* @tp_compare@ */
338 0, /* @tp_as_number@ */
339 0, /* @tp_as_sequence@ */
340 0, /* @tp_as_mapping@ */
344 0, /* @tp_getattro@ */
345 0, /* @tp_setattro@ */
346 0, /* @tp_as_buffer@ */
347 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
351 "Standard (integer) Diffie-Hellman group information.",
353 0, /* @tp_traverse@ */
355 0, /* @tp_richcompare@ */
356 0, /* @tp_weaklistoffset@ */
358 0, /* @tp_iternext@ */
359 0, /* @tp_methods@ */
360 0, /* @tp_members@ */
361 dhinfo_pygetset
, /* @tp_getset@ */
364 0, /* @tp_descr_get@ */
365 0, /* @tp_descr_set@ */
366 0, /* @tp_dictoffset@ */
368 PyType_GenericAlloc
, /* @tp_alloc@ */
369 fginfo_pynew
, /* @tp_new@ */
374 static PyTypeObject bindhinfo_pytype_skel
= {
375 PyObject_HEAD_INIT(0) 0, /* Header */
376 "catacomb.BinDHInfo", /* @tp_name@ */
377 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
378 0, /* @tp_itemsize@ */
380 fginfo_pydealloc
, /* @tp_dealloc@ */
382 0, /* @tp_getattr@ */
383 0, /* @tp_setattr@ */
384 0, /* @tp_compare@ */
386 0, /* @tp_as_number@ */
387 0, /* @tp_as_sequence@ */
388 0, /* @tp_as_mapping@ */
392 0, /* @tp_getattro@ */
393 0, /* @tp_setattro@ */
394 0, /* @tp_as_buffer@ */
395 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
399 "Binary-field Diffie-Hellman group information.",
401 0, /* @tp_traverse@ */
403 0, /* @tp_richcompare@ */
404 0, /* @tp_weaklistoffset@ */
406 0, /* @tp_iternext@ */
407 0, /* @tp_methods@ */
408 0, /* @tp_members@ */
409 bindhinfo_pygetset
, /* @tp_getset@ */
412 0, /* @tp_descr_get@ */
413 0, /* @tp_descr_set@ */
414 0, /* @tp_dictoffset@ */
416 PyType_GenericAlloc
, /* @tp_alloc@ */
417 fginfo_pynew
, /* @tp_new@ */
422 /*----- General utilities -------------------------------------------------*/
424 PyTypeObject
*ge_pytype
, *group_pytype
;
425 PyTypeObject
*primegroup_pytype
, *bingroup_pytype
, *ecgroup_pytype
;
427 group
*group_copy(group
*g
)
429 if (strcmp(G_NAME(g
), "prime") == 0) {
430 gctx_prime
*gc
= (gctx_prime
*)g
;
432 gp
.g
= G_TOINT(g
, MP_NEW
, g
->g
);
435 g
= group_prime(&gp
);
437 } else if (strcmp(G_NAME(g
), "bin") == 0) {
438 gctx_bin
*gc
= (gctx_bin
*)g
;
440 gb
.g
= G_TOINT(g
, MP_NEW
, g
->g
);
443 g
= group_binary(&gb
);
445 } else if (strcmp(G_NAME(g
), "ec") == 0) {
446 gctx_ec
*gc
= (gctx_ec
*)g
;
448 if ((ei
.c
= eccurve_copy(gc
->ei
.c
)) == 0)
451 EC_COPY(&ei
.g
, &gc
->ei
.g
);
452 ei
.r
= MP_COPY(gc
->ei
.r
);
453 ei
.h
= MP_COPY(gc
->ei
.h
);
460 PyObject
*ge_pywrap(PyObject
*gobj
, ge
*x
)
462 ge_pyobj
*z
= PyObject_New(ge_pyobj
, (PyTypeObject
*)gobj
);
464 z
->g
= GROUP_G(gobj
);
466 return ((PyObject
*)z
);
469 static PyObject
*ge_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
471 char *kwlist
[] = { "x", 0 };
480 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O:new", kwlist
, &x
)) goto end
;
482 if (ECPT_PYCHECK(x
)) {
484 if (G_FROMEC(g
, xx
, &p
))
485 TYERR("can't convert from elliptic curve point");
487 } else if ((y
= tomp(x
)) != 0) {
488 if (G_FROMINT(g
, xx
, y
))
489 TYERR("can't convert from integer");
491 } else if (PyString_Check(x
)) {
492 sc
.buf
= PyString_AS_STRING(x
);
493 sc
.lim
= sc
.buf
+ PyString_GET_SIZE(x
);
494 if (G_READ(g
, xx
, &mptext_stringops
, &sc
) || sc
.buf
< sc
.lim
)
495 SYNERR("malformed group element string");
497 TYERR("can't convert to group element");
498 return (ge_pywrap((PyObject
*)ty
, xx
));
502 if (xx
) G_DESTROY(g
, xx
);
506 static PyObject
*group_dopywrap(PyTypeObject
*ty
, group
*g
)
508 group_pyobj
*gobj
= newtype(ty
, 0, g
->ops
->name
);
510 gobj
->ty
.type
.tp_basicsize
= sizeof(ge_pyobj
);
511 gobj
->ty
.type
.tp_base
= ge_pytype
;
512 Py_INCREF(group_pytype
);
513 gobj
->ty
.type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
514 Py_TPFLAGS_BASETYPE
|
515 Py_TPFLAGS_CHECKTYPES
|
516 Py_TPFLAGS_HEAPTYPE
);
517 gobj
->ty
.type
.tp_alloc
= PyType_GenericAlloc
;
518 gobj
->ty
.type
.tp_free
= 0;
519 gobj
->ty
.type
.tp_new
= ge_pynew
;
520 PyType_Ready(&gobj
->ty
.type
);
521 return ((PyObject
*)gobj
);
524 PyObject
*group_pywrap(group
*g
)
528 if (strcmp(G_NAME(g
), "prime") == 0) ty
= primegroup_pytype
;
529 else if (strcmp(G_NAME(g
), "bin") == 0) ty
= bingroup_pytype
;
530 else if (strcmp(G_NAME(g
), "ec") == 0) ty
= ecgroup_pytype
;
532 return (group_dopywrap(ty
, g
));
535 /*----- Group elements ----------------------------------------------------*/
537 #define BINOP(name) \
538 static PyObject *ge_py##name(PyObject *x, PyObject *y) \
542 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) || \
543 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y)))) \
547 g->ops->name(g, z, GE_X(x), GE_X(y)); \
548 return (ge_pywrap(GE_GOBJ(x), z)); \
555 static PyObject *gemeth_##name(PyObject *me, PyObject *arg) \
559 if (!PyArg_ParseTuple(arg, ":" #name)) return (0); \
562 g->ops->name(g, z, GE_X(me)); \
563 return (ge_pywrap(GE_GOBJ(me), z)); \
569 static PyObject
*ge_pyexp(PyObject
*x
, PyObject
*n
, PyObject
*m
)
574 if (m
!= Py_None
|| !GE_PYCHECK(x
) || (nn
= getmp(n
)) == 0)
576 z
= G_CREATE(GE_G(x
));
577 G_EXP(GE_G(x
), z
, GE_X(x
), nn
);
579 return (ge_pywrap(GE_GOBJ(x
), z
));
582 static void ge_pydealloc(PyObject
*me
)
584 G_DESTROY(GE_G(me
), GE_X(me
));
585 Py_DECREF(GE_GOBJ(me
));
589 static void group_pydealloc(PyObject
*me
)
591 G_DESTROYGROUP(GROUP_G(me
));
592 PyType_Type
.tp_dealloc(me
);
595 static PyObject
*gmexp_id(PyObject
*me
)
597 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
598 G_COPY(g
, x
, g
->i
); return (ge_pywrap(me
, x
));
601 static int gmexp_fill(void *pp
, PyObject
*me
, PyObject
*x
, PyObject
*m
)
603 group_expfactor
*f
= pp
;
605 if (!GE_PYCHECK(x
) || GE_G(x
) != GROUP_G(me
) || (f
->exp
= getmp(m
)) == 0)
611 static PyObject
*ge_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
616 if (!GE_PYCHECK(x
) || !GE_PYCHECK(y
) ||
617 (GE_G(x
) != GE_G(y
) && !group_samep(GE_G(x
), GE_G(y
))))
620 case Py_EQ
: b
= G_EQ(GE_G(x
), GE_X(x
), GE_X(y
)); break;
621 case Py_NE
: b
= !G_EQ(GE_G(x
), GE_X(x
), GE_X(y
)); break;
622 default: TYERR("group elements are unordered");
629 static PyObject
*gemeth_check(PyObject
*me
, PyObject
*arg
)
631 if (!PyArg_ParseTuple(arg
, ":check")) goto end
;
632 if (group_check(GE_G(me
), GE_X(me
))) VALERR("bad group element");
638 static int ge_pynonzerop(PyObject
*x
)
639 { return (!G_IDENTP(GE_G(x
), GE_X(x
))); }
641 static PyObject
*ge_pystr(PyObject
*me
)
646 group_writedstr(GE_G(me
), GE_X(me
), &d
);
647 rc
= PyString_FromStringAndSize(d
.buf
, d
.len
);
652 static PyObject
*ge_pylong(PyObject
*me
)
657 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
658 TYERR("can't convert to integer");
665 static PyObject
*ge_pyint(PyObject
*me
)
671 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
672 TYERR("can't convert to integer");
673 if (mp_tolong_checked(x
, &l
)) goto end
;
674 rc
= PyInt_FromLong(l
);
680 static PyObject
*gemeth_toint(PyObject
*me
, PyObject
*arg
)
684 if (!PyArg_ParseTuple(arg
, ":toint")) goto end
;
685 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
686 TYERR("can't convert to integer");
687 return (mp_pywrap(x
));
692 static PyObject
*gemeth_toec(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
694 char *kwlist
[] = { "curve", 0 };
695 PyTypeObject
*cty
= ecpt_pytype
;
698 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O:toec", kwlist
,
700 if (!PyType_Check(cty
) || !PyType_IsSubtype(cty
, ecpt_pytype
))
701 TYERR("want subtype of catacomb.ECPt");
702 if (G_TOEC(GE_G(me
), &p
, GE_X(me
)))
703 TYERR("can't convert to ec point");
704 return (ecpt_pywrapout(cty
, &p
));
709 static PyObject
*gemeth_tobuf(PyObject
*me
, PyObject
*arg
)
715 if (!PyArg_ParseTuple(arg
, ":tobuf")) return (0);
716 n
= GE_G(me
)->noctets
+ 4;
717 rc
= bytestring_pywrap(0, n
);
718 buf_init(&b
, PyString_AS_STRING(rc
), n
);
719 G_TOBUF(GE_G(me
), &b
, GE_X(me
));
721 _PyString_Resize(&rc
, BLEN(&b
));
725 static PyObject
*gemeth_toraw(PyObject
*me
, PyObject
*arg
)
731 if (!PyArg_ParseTuple(arg
, ":toraw")) return (0);
732 n
= GE_G(me
)->noctets
;
733 rc
= bytestring_pywrap(0, n
);
734 buf_init(&b
, PyString_AS_STRING(rc
), n
);
735 G_TORAW(GE_G(me
), &b
, GE_X(me
));
737 _PyString_Resize(&rc
, BLEN(&b
));
741 static PyObject
*gmexp_exp(PyObject
*me
, void *pp
, int n
)
743 ge
*z
= G_CREATE(GROUP_G(me
));
744 G_MEXP(GROUP_G(me
), z
, pp
, n
);
745 return (ge_pywrap(me
, z
));
748 static void gmexp_drop(void *pp
)
750 group_expfactor
*f
= pp
;
754 static PyObject
*gmeth_mexp(PyObject
*me
, PyObject
*arg
)
756 return (mexp_common(me
, arg
, sizeof(group_expfactor
),
757 gmexp_id
, gmexp_fill
, gmexp_exp
, gmexp_drop
));
760 static PyObject
*gmeth_check(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
762 char *kwlist
[] = { "rng", 0 };
763 grand
*r
= &rand_global
;
766 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:check", kwlist
,
769 if ((p
= G_CHECK(GROUP_G(me
), r
)) != 0)
776 static PyObject
*group_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
778 int b
= group_samep(GROUP_G(x
), GROUP_G(y
));
782 default: TYERR("can't order groups");
789 static PyObject
*meth__GE_frombuf(PyObject
*me
, PyObject
*arg
)
797 if (!PyArg_ParseTuple(arg
, "Os#:frombuf", &me
, &p
, &n
))
802 if (G_FROMBUF(g
, &b
, x
))
803 VALERR("invalid data");
804 return (Py_BuildValue("(NN)", ge_pywrap(me
, x
), bytestring_pywrapbuf(&b
)));
806 if (x
) G_DESTROY(g
, x
);
810 static PyObject
*meth__GE_fromraw(PyObject
*me
, PyObject
*arg
)
818 if (!PyArg_ParseTuple(arg
, "Os#:fromraw", &me
, &p
, &n
))
823 if (G_FROMRAW(g
, &b
, x
))
824 VALERR("invalid data");
825 return (Py_BuildValue("(NN)", ge_pywrap(me
, x
), bytestring_pywrapbuf(&b
)));
827 if (x
) G_DESTROY(g
, x
);
831 static PyObject
*meth__GE_fromstring(PyObject
*me
, PyObject
*arg
)
839 if (!PyArg_ParseTuple(arg
, "Os#:fromstring", &me
, &p
, &n
))
845 if (G_READ(g
, x
, &mptext_stringops
, &sc
))
846 SYNERR("bad group element string");
847 return (Py_BuildValue("(Ns#)", ge_pywrap(me
, x
),
848 sc
.buf
, (int)(sc
.lim
- sc
.buf
)));
850 if (x
) G_DESTROY(g
, x
);
854 static PyObject
*meth__Group_parse(PyObject
*me
, PyObject
*arg
)
860 if (!PyArg_ParseTuple(arg
, "Os:parse", &me
, &p
))
864 if ((g
= group_parse(&qd
)) == 0)
866 return (group_pywrap(g
));
871 static PyObject
*geget_group(PyObject
*me
, void *hunoz
)
872 { RETURN_OBJ(GE_GOBJ(me
)); }
874 static PyObject
*gget_nbits(PyObject
*me
, void *hunoz
)
875 { return (PyInt_FromLong(GROUP_G(me
)->nbits
)); }
877 static PyObject
*gget_noctets(PyObject
*me
, void *hunoz
)
878 { return (PyInt_FromLong(GROUP_G(me
)->noctets
)); }
880 static PyObject
*gget_i(PyObject
*me
, void *hunoz
)
882 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
883 G_COPY(g
, x
, g
->i
); return (ge_pywrap(me
, x
));
886 static PyObject
*gget_g(PyObject
*me
, void *hunoz
)
888 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
889 G_COPY(g
, x
, g
->g
); return (ge_pywrap(me
, x
));
892 static PyObject
*gget_r(PyObject
*me
, void *hunoz
)
893 { return (mp_pywrap(MP_COPY(GROUP_G(me
)->r
))); }
895 static PyObject
*gget_h(PyObject
*me
, void *hunoz
)
896 { return (mp_pywrap(MP_COPY(GROUP_G(me
)->h
))); }
898 static PyGetSetDef ge_pygetset
[] = {
899 #define GETSETNAME(op, name) ge##op##_##name
900 GET (group
, "X.group -> group containing X")
905 static PyMethodDef ge_pymethods
[] = {
906 #define METHNAME(name) gemeth_##name
907 METH (inv
, "X.inv() -> inverse element of X")
908 METH (sqr
, "X.sqr() -> X^2 = X * X")
909 METH (check
, "X.check() -> check X really belongs to its group")
910 METH (toint
, "X.toint() -> X converted to an integer")
912 X.toec(curve = ecpt) -> X converted to elliptic curve point")
913 METH (tobuf
, "X.tobuf() -> X in buffer representation")
914 METH (toraw
, "X.toraw() -> X in raw representation")
919 static PyNumberMethods ge_pynumber
= {
921 0, /* @nb_subtract@ */
922 ge_pymul
, /* @nb_multiply@ */
923 ge_pydiv
, /* @nb_divide@ */
924 0, /* @nb_remainder@ */
926 ge_pyexp
, /* @nb_power@ */
927 0, /* @nb_negative@ */
928 0, /* @nb_positive@ */
929 0, /* @nb_absolute@ */
930 ge_pynonzerop
, /* @nb_nonzero@ */
938 ge_pyint
, /* @nb_int@ */
939 ge_pylong
, /* @nb_long@ */
940 0 /* meaningless */, /* @nb_float@ */
944 0, /* @nb_inplace_add@ */
945 0, /* @nb_inplace_subtract@ */
946 0, /* @nb_inplace_multiply@ */
947 0, /* @nb_inplace_divide@ */
948 0, /* @nb_inplace_remainder@ */
949 0, /* @nb_inplace_power@ */
950 0, /* @nb_inplace_lshift@ */
951 0, /* @nb_inplace_rshift@ */
952 0, /* @nb_inplace_and@ */
953 0, /* @nb_inplace_xor@ */
954 0, /* @nb_inplace_or@ */
956 0, /* @nb_floor_divide@ */
957 ge_pydiv
, /* @nb_true_divide@ */
958 0, /* @nb_inplace_floor_divide@ */
959 0, /* @nb_inplace_true_divide@ */
962 static PyTypeObject ge_pytype_skel
= {
963 PyObject_HEAD_INIT(0) 0, /* Header */
964 "catacomb.GE", /* @tp_name@ */
965 sizeof(ge_pyobj
), /* @tp_basicsize@ */
966 0, /* @tp_itemsize@ */
968 ge_pydealloc
, /* @tp_dealloc@ */
970 0, /* @tp_getattr@ */
971 0, /* @tp_setattr@ */
972 0, /* @tp_compare@ */
974 &ge_pynumber
, /* @tp_as_number@ */
975 0, /* @tp_as_sequence@ */
976 0, /* @tp_as_mapping@ */
979 ge_pystr
, /* @tp_str@ */
980 0, /* @tp_getattro@ */
981 0, /* @tp_setattro@ */
982 0, /* @tp_as_buffer@ */
983 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
984 Py_TPFLAGS_CHECKTYPES
|
988 "Group elements, abstract base class.",
990 0, /* @tp_traverse@ */
992 ge_pyrichcompare
, /* @tp_richcompare@ */
993 0, /* @tp_weaklistoffset@ */
995 0, /* @tp_iternext@ */
996 ge_pymethods
, /* @tp_methods@ */
997 0, /* @tp_members@ */
998 ge_pygetset
, /* @tp_getset@ */
1001 0, /* @tp_descr_get@ */
1002 0, /* @tp_descr_set@ */
1003 0, /* @tp_dictoffset@ */
1005 PyType_GenericAlloc
, /* @tp_alloc@ */
1006 abstract_pynew
, /* @tp_new@ */
1011 static PyGetSetDef group_pygetset
[] = {
1012 #define GETSETNAME(op, name) g##op##_##name
1013 GET (noctets
, "G.noctets -> size in octets of element")
1014 GET (nbits
, "G.nbits -> size in bits of element")
1015 GET (i
, "G.i -> group identity")
1016 GET (g
, "G.g -> group generator")
1017 GET (r
, "G.r -> group order")
1018 GET (h
, "G.h -> group cofactor")
1023 static PyMethodDef group_pymethods
[] = {
1024 #define METHNAME(name) gmeth_##name
1026 G.mexp([(X0, N0), (X1, N1), ...]) -> X0^N0 X1^N1 ...")
1027 KWMETH(check
, "G.check(rand = random): check group is good")
1032 static PyTypeObject group_pytype_skel
= {
1033 PyObject_HEAD_INIT(0) 0, /* Header */
1034 "catacomb.Group", /* @tp_name@ */
1035 sizeof(group_pyobj
), /* @tp_basicsize@ */
1036 0, /* @tp_itemsize@ */
1038 group_pydealloc
, /* @tp_dealloc@ */
1040 0, /* @tp_getattr@ */
1041 0, /* @tp_setattr@ */
1042 0, /* @tp_compare@ */
1044 0, /* @tp_as_number@ */
1045 0, /* @tp_as_sequence@ */
1046 0, /* @tp_as_mapping@ */
1050 0, /* @tp_getattro@ */
1051 0, /* @tp_setattro@ */
1052 0, /* @tp_as_buffer@ */
1053 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1054 Py_TPFLAGS_BASETYPE
,
1057 "Abstract base class for groups.",
1059 0, /* @tp_traverse@ */
1061 group_pyrichcompare
, /* @tp_richcompare@ */
1062 0, /* @tp_weaklistoffset@ */
1064 0, /* @tp_iternext@ */
1065 group_pymethods
, /* @tp_methods@ */
1066 0, /* @tp_members@ */
1067 group_pygetset
, /* @tp_getset@ */
1070 0, /* @tp_descr_get@ */
1071 0, /* @tp_descr_set@ */
1072 0, /* @tp_dictoffset@ */
1074 PyType_GenericAlloc
, /* @tp_alloc@ */
1075 abstract_pynew
, /* @tp_new@ */
1080 static PyObject
*pgget_info(PyObject
*me
, void *hunoz
)
1083 gctx_prime
*gg
= (gctx_prime
*)GROUP_G(me
);
1084 dp
.p
= MP_COPY(gg
->mm
.m
);
1085 dp
.q
= MP_COPY(gg
->g
.r
);
1086 dp
.g
= mpmont_reduce(&gg
->mm
, MP_NEW
, gg
->gen
);
1087 return (fginfo_pywrap(&dp
, dhinfo_pytype
));
1090 static PyGetSetDef primegroup_pygetset
[] = {
1091 #define GETSETNAME(op, name) pg##op##_##name
1092 GET (info
, "G.info -> information about the group")
1097 static PyObject
*primegroup_pynew(PyTypeObject
*ty
,
1098 PyObject
*arg
, PyObject
*kw
)
1101 char *kwlist
[] = { "info", 0 };
1103 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", kwlist
,
1106 return (group_dopywrap(ty
, group_prime(FGINFO_DP(i
))));
1109 static PyTypeObject primegroup_pytype_skel
= {
1110 PyObject_HEAD_INIT(0) 0, /* Header */
1111 "catacomb.PrimeGroup", /* @tp_name@ */
1112 sizeof(group_pyobj
), /* @tp_basicsize@ */
1113 0, /* @tp_itemsize@ */
1115 group_pydealloc
, /* @tp_dealloc@ */
1117 0, /* @tp_getattr@ */
1118 0, /* @tp_setattr@ */
1119 0, /* @tp_compare@ */
1121 0, /* @tp_as_number@ */
1122 0, /* @tp_as_sequence@ */
1123 0, /* @tp_as_mapping@ */
1127 0, /* @tp_getattro@ */
1128 0, /* @tp_setattro@ */
1129 0, /* @tp_as_buffer@ */
1130 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1131 Py_TPFLAGS_BASETYPE
,
1134 "Subgroups of prime fields.",
1136 0, /* @tp_traverse@ */
1138 0, /* @tp_richcompare@ */
1139 0, /* @tp_weaklistoffset@ */
1141 0, /* @tp_iternext@ */
1142 0, /* @tp_methods@ */
1143 0, /* @tp_members@ */
1144 primegroup_pygetset
, /* @tp_getset@ */
1147 0, /* @tp_descr_get@ */
1148 0, /* @tp_descr_set@ */
1149 0, /* @tp_dictoffset@ */
1151 PyType_GenericAlloc
, /* @tp_alloc@ */
1152 primegroup_pynew
, /* @tp_new@ */
1157 static PyObject
*bgget_info(PyObject
*me
, void *hunoz
)
1160 gctx_bin
*gg
= (gctx_bin
*)GROUP_G(me
);
1161 dp
.p
= MP_COPY(gg
->r
.p
);
1162 dp
.q
= MP_COPY(gg
->g
.r
);
1163 dp
.g
= MP_COPY(gg
->gen
);
1164 return (fginfo_pywrap(&dp
, bindhinfo_pytype
));
1167 static PyGetSetDef bingroup_pygetset
[] = {
1168 #define GETSETNAME(op, name) bg##op##_##name
1169 GET (info
, "G.info -> information about the group")
1174 static PyObject
*bingroup_pynew(PyTypeObject
*ty
,
1175 PyObject
*arg
, PyObject
*kw
)
1178 char *kwlist
[] = { "info", 0 };
1180 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", kwlist
,
1181 bindhinfo_pytype
, &i
))
1183 return (group_dopywrap(ty
, group_binary(FGINFO_DP(i
))));
1186 static PyTypeObject bingroup_pytype_skel
= {
1187 PyObject_HEAD_INIT(0) 0, /* Header */
1188 "catacomb.BinGroup", /* @tp_name@ */
1189 sizeof(group_pyobj
), /* @tp_basicsize@ */
1190 0, /* @tp_itemsize@ */
1192 group_pydealloc
, /* @tp_dealloc@ */
1194 0, /* @tp_getattr@ */
1195 0, /* @tp_setattr@ */
1196 0, /* @tp_compare@ */
1198 0, /* @tp_as_number@ */
1199 0, /* @tp_as_sequence@ */
1200 0, /* @tp_as_mapping@ */
1204 0, /* @tp_getattro@ */
1205 0, /* @tp_setattro@ */
1206 0, /* @tp_as_buffer@ */
1207 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1208 Py_TPFLAGS_BASETYPE
,
1211 "Subgroups of binary fields.",
1213 0, /* @tp_traverse@ */
1215 0, /* @tp_richcompare@ */
1216 0, /* @tp_weaklistoffset@ */
1218 0, /* @tp_iternext@ */
1219 0, /* @tp_methods@ */
1220 0, /* @tp_members@ */
1221 bingroup_pygetset
, /* @tp_getset@ */
1224 0, /* @tp_descr_get@ */
1225 0, /* @tp_descr_set@ */
1226 0, /* @tp_dictoffset@ */
1228 PyType_GenericAlloc
, /* @tp_alloc@ */
1229 bingroup_pynew
, /* @tp_new@ */
1234 static PyObject
*egget_info(PyObject
*me
, void *hunoz
)
1237 gctx_ec
*gg
= (gctx_ec
*)GROUP_G(me
);
1239 ecinfo_copy(&ei
, &gg
->ei
);
1240 return (ecinfo_pywrap(&ei
));
1243 static PyGetSetDef ecgroup_pygetset
[] = {
1244 #define GETSETNAME(op, name) eg##op##_##name
1245 GET (info
, "G.info -> information about the group")
1250 static PyObject
*ecgroup_pynew(PyTypeObject
*ty
,
1251 PyObject
*arg
, PyObject
*kw
)
1255 char *kwlist
[] = { "info", 0 };
1257 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", kwlist
,
1260 ecinfo_copy(&ei
, ECINFO_EI(i
));
1261 return (group_dopywrap(ty
, group_ec(&ei
)));
1264 static PyTypeObject ecgroup_pytype_skel
= {
1265 PyObject_HEAD_INIT(0) 0, /* Header */
1266 "catacomb.ECGroup", /* @tp_name@ */
1267 sizeof(group_pyobj
), /* @tp_basicsize@ */
1268 0, /* @tp_itemsize@ */
1270 group_pydealloc
, /* @tp_dealloc@ */
1272 0, /* @tp_getattr@ */
1273 0, /* @tp_setattr@ */
1274 0, /* @tp_compare@ */
1276 0, /* @tp_as_number@ */
1277 0, /* @tp_as_sequence@ */
1278 0, /* @tp_as_mapping@ */
1282 0, /* @tp_getattro@ */
1283 0, /* @tp_setattro@ */
1284 0, /* @tp_as_buffer@ */
1285 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1286 Py_TPFLAGS_BASETYPE
,
1289 "Elliptic curve groups.",
1291 0, /* @tp_traverse@ */
1293 0, /* @tp_richcompare@ */
1294 0, /* @tp_weaklistoffset@ */
1296 0, /* @tp_iternext@ */
1297 0, /* @tp_methods@ */
1298 0, /* @tp_members@ */
1299 ecgroup_pygetset
, /* @tp_getset@ */
1302 0, /* @tp_descr_get@ */
1303 0, /* @tp_descr_set@ */
1304 0, /* @tp_dictoffset@ */
1306 PyType_GenericAlloc
, /* @tp_alloc@ */
1307 ecgroup_pynew
, /* @tp_new@ */
1312 /*----- Global stuff ------------------------------------------------------*/
1314 static PyMethodDef methods
[] = {
1315 #define METHNAME(name) meth_##name
1316 METH (_GE_frombuf
, "frombuf(BUF) -> X, REST")
1317 METH (_GE_fromraw
, "fromraw(BUF) -> X, REST")
1318 METH (_GE_fromstring
, "fromstring(STR) -> X, REST")
1319 METH (_Group_parse
, "parse(STR) -> G, REST")
1320 METH (_DHInfo_parse
, "parse(STR) -> D, REST")
1321 METH (_BinDHInfo_parse
, "parse(STR) -> D, REST")
1322 METH (_DHInfo__groupn
, 0)
1323 METH (_BinDHInfo__groupn
, 0)
1324 KWMETH(_DHInfo_generate
, "\
1325 generate(PBITS, [qbits = 0, event = pgen_nullev,\n\
1326 rng = rand, nsteps = 0]) -> D")
1327 KWMETH(_DHInfo_genlimlee
, "\
1328 genlimlee(PBITS, QBITS, [event = pgen_nullev, ievent = pgen_nullev,\n\
1329 rng = rand, nsteps = 0, subgroupp = True]) -> (D, [Q, ...])")
1330 KWMETH(_DHInfo_gendsa
, "\
1331 gendsa(PBITS, QBITS, SEED, [event = pgen_nullev, nsteps = 0])\n\
1332 -> (D, SEED, COUNT)")
1337 void group_pyinit(void)
1339 INITTYPE(fginfo
, root
);
1340 INITTYPE(dhinfo
, fginfo
);
1341 INITTYPE(bindhinfo
, dhinfo
);
1343 INITTYPE(group
, type
);
1344 INITTYPE(primegroup
, group
);
1345 INITTYPE(bingroup
, group
);
1346 INITTYPE(ecgroup
, group
);
1347 addmethods(methods
);
1350 void group_pyinsert(PyObject
*mod
)
1352 INSERT("FGInfo", fginfo_pytype
);
1353 INSERT("DHInfo", dhinfo_pytype
);
1354 INSERT("BinDHInfo", bindhinfo_pytype
);
1355 INSERT("GE", ge_pytype
);
1356 INSERT("Group", group_pytype
);
1357 INSERT("PrimeGroup", primegroup_pytype
);
1358 INSERT("BinGroup", bingroup_pytype
);
1359 INSERT("ECGroup", ecgroup_pytype
);
1360 INSERT("_pgroups", namedgroups(ptab
, &npgroups
));
1361 INSERT("_bingroups", namedgroups(bintab
, &nbingroups
));
1364 /*----- That's all, folks -------------------------------------------------*/