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 /*----- Utility functions -------------------------------------------------*/
33 PyTypeObject
*ecpt_pytype
;
34 PyTypeObject
*ecptcurve_pytype
;
35 PyTypeObject
*eccurve_pytype
;
36 PyTypeObject
*ecprimecurve_pytype
;
37 PyTypeObject
*ecprimeprojcurve_pytype
;
38 PyTypeObject
*ecbincurve_pytype
;
39 PyTypeObject
*ecbinprojcurve_pytype
;
40 PyTypeObject
*ecinfo_pytype
;
42 ec_curve
*eccurve_copy(ec_curve
*c
)
47 if ((f
= field_copy(c
->f
)) == 0)
49 a
= F_OUT(f
, MP_NEW
, c
->a
);
50 b
= F_OUT(f
, MP_NEW
, c
->b
);
51 if (STRCMP(EC_NAME(c
), ==, "prime"))
52 c
= ec_prime(f
, a
, b
);
53 else if (STRCMP(EC_NAME(c
), ==, "primeproj"))
54 c
= ec_primeproj(f
, a
, b
);
55 else if (STRCMP(EC_NAME(c
), ==, "bin"))
57 else if (STRCMP(EC_NAME(c
), ==, "binproj"))
58 c
= ec_binproj(f
, a
, b
);
67 static PyObject
*ecpt_dopywrap(PyObject
*cobj
, ec_curve
*c
, ec
*p
)
69 ecpt_pyobj
*z
= PyObject_New(ecpt_pyobj
, (PyTypeObject
*)cobj
);
73 return ((PyObject
*)z
);
76 PyObject
*ecpt_pywrap(PyObject
*cobj
, ec
*p
)
77 { return (ecpt_dopywrap(cobj
, ECCURVE_C(cobj
), p
)); }
79 PyObject
*ecpt_pywrapout(void *cobj
, ec
*p
)
83 if (!PyType_IsSubtype(cobj
, ecptcurve_pytype
))
87 EC_IN(ECCURVE_C(cobj
), p
, p
);
89 return (ecpt_dopywrap(cobj
, c
, p
));
92 int toecpt(ec_curve
*c
, ec
*d
, PyObject
*p
)
94 if (ECPTCURVE_PYCHECK(p
)) {
95 if (ECPT_C(p
) != c
&& !ec_samep(ECPT_C(p
), c
))
97 EC_COPY(d
, ECPT_P(p
));
98 } else if (ECPT_PYCHECK(p
))
99 EC_IN(c
, d
, ECPT_P(p
));
105 int getecpt(ec_curve
*c
, ec
*d
, PyObject
*p
)
107 if (toecpt(c
, d
, p
)) {
108 PyErr_Format(PyExc_TypeError
, "can't convert %.100s to ecpt",
109 Py_TYPE(p
)->tp_name
);
115 void getecptout(ec
*d
, PyObject
*p
)
117 if (ECPTCURVE_PYCHECK(p
))
118 EC_OUT(ECPT_C(p
), d
, ECPT_P(p
));
120 assert(ECPT_PYCHECK(p
));
121 EC_COPY(d
, ECPT_P(p
));
125 int convecpt(PyObject
*o
, void *p
)
127 if (!ECPT_PYCHECK(o
))
128 TYERR("want elliptic curve point");
135 /*----- Curve points ------------------------------------------------------*/
137 static int ecbinop(PyObject
*x
, PyObject
*y
,
138 ec_curve
**c
, PyObject
**cobj
, ec
*xx
, ec
*yy
)
140 if (ECPTCURVE_PYCHECK(x
)) *cobj
= ECPT_COBJ(x
);
141 else if (ECPTCURVE_PYCHECK(y
)) *cobj
= ECPT_COBJ(y
);
143 *c
= ECCURVE_C(*cobj
);
144 if (toecpt(*c
, xx
, x
) || toecpt(*c
, yy
, y
)) return (-1);
148 #define BINOP(name) \
149 static PyObject *ecpt_py##name(PyObject *x, PyObject *y) { \
150 ec xx = EC_INIT, yy = EC_INIT, zz = EC_INIT; \
153 if (ecbinop(x, y, &c, &cobj, &xx, &yy)) RETURN_NOTIMPL; \
154 c->ops->name(c, &zz, &xx, &yy); \
155 EC_DESTROY(&xx); EC_DESTROY(&yy); \
156 return (ecpt_pywrap(ECPT_COBJ(x), &zz)); \
163 static PyObject *ecpt_py##name(PyObject *x) { \
165 ec_curve *c = ECPT_C(x); \
166 c->ops->name(c, &zz, ECPT_P(x)); \
167 return (ecpt_pywrap(ECPT_COBJ(x), &zz)); \
172 static PyObject
*ecpt_pyid(PyObject
*x
) { RETURN_OBJ(x
); }
174 static int ecpt_pynonzerop(PyObject
*x
) { return (!EC_ATINF(ECPT_P(x
))); }
176 static void ecpt_pydealloc(PyObject
*x
)
178 EC_DESTROY(ECPT_P(x
));
179 Py_DECREF(ECPT_COBJ(x
));
183 static PyObject
*ecpt_pymul(PyObject
*x
, PyObject
*y
)
188 if (ECPT_PYCHECK(x
)) { PyObject
*t
; t
= x
; x
= y
; y
= t
; }
189 if (!ECPT_PYCHECK(y
) || (xx
= tomp(x
)) == 0) RETURN_NOTIMPL
;
190 ec_imul(ECPT_C(y
), &zz
, ECPT_P(y
), xx
);
192 return (ecpt_pywrap(ECPT_COBJ(y
), &zz
));
195 static Py_hash_t
ecpt_pyhash(PyObject
*me
)
201 if (EC_ATINF(&p
)) h
= 0x81d81a94;
202 else h
= 0xe0fdd039 ^ (2*mphash(p
.x
)) ^ (3*mphash(p
.y
));
207 static PyObject
*ecpt_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
209 ec p
= EC_INIT
, q
= EC_INIT
;
213 if (!ECPT_PYCHECK(y
)) RETURN_NOTIMPL
;
217 case Py_EQ
: b
= EC_EQ(&p
, &q
); break;
218 case Py_NE
: b
= !EC_EQ(&p
, &q
); break;
219 default: TYERR("elliptic curve points are unordered");
228 static PyObject
*epmeth_oncurvep(PyObject
*me
)
230 return (getbool(EC_ATINF(ECPT_P(me
)) ||
231 !EC_CHECK(ECPT_C(me
), ECPT_P(me
))));
234 static PyObject
*epmeth_dbl(PyObject
*me
)
237 EC_DBL(ECPT_C(me
), &p
, ECPT_P(me
));
238 return (ecpt_pywrap(ECPT_COBJ(me
), &p
));
241 static PyObject
*epmeth_tobuf(PyObject
*me
)
252 n
= mp_octets(p
.x
) + mp_octets(p
.y
) + 6;
253 rc
= bytestring_pywrap(0, n
);
254 buf_init(&b
, BIN_PTR(rc
), n
);
257 BIN_SETLEN(rc
, BLEN(&b
));
262 static PyObject
*epmeth_toraw(PyObject
*me
)
267 ec_curve
*c
= ECPT_C(me
);
271 len
= c
->f
->noctets
* 2 + 1;
272 rc
= bytestring_pywrap(0, len
);
274 buf_init(&b
, p
, len
);
275 EC_OUT(c
, &pp
, ECPT_P(me
));
276 ec_putraw(c
, &b
, &pp
);
278 BIN_SETLEN(rc
, BLEN(&b
));
282 static PyObject
*epmeth_ec2osp(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
287 ec_curve
*c
= ECPT_C(me
);
289 unsigned f
= EC_EXPLY
;
291 static const char *const kwlist
[] = { "flags", 0 };
293 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:ec2osp", KWLIST
,
296 len
= c
->f
->noctets
* 2 + 1;
297 rc
= bytestring_pywrap(0, len
);
299 buf_init(&b
, p
, len
);
300 EC_OUT(c
, &pp
, ECPT_P(me
));
301 if (ec_ec2osp(c
, f
, &b
, &pp
)) {
302 Py_DECREF(rc
); rc
= 0;
303 VALERR("invalid flags");
306 BIN_SETLEN(rc
, BLEN(&b
));
311 static PyObject
*epmeth_frombuf(PyObject
*me
, PyObject
*arg
)
318 if (!PyArg_ParseTuple(arg
, "O&:frombuf", convbin
, &in
)) goto end
;
319 buf_init(&b
, (/*unconst*/ void *)in
.p
, in
.sz
);
320 if (buf_getec(&b
, &pp
)) VALERR("malformed data");
321 rc
= Py_BuildValue("(NN)", ecpt_pywrapout(me
, &pp
),
322 bytestring_pywrapbuf(&b
));
327 static PyObject
*epmeth_parse(PyObject
*me
, PyObject
*arg
)
334 if (!PyArg_ParseTuple(arg
, "s:parse", &p
)) goto end
;
336 if (!ec_ptparse(&qd
, &pp
)) VALERR(qd
.e
);
337 rc
= Py_BuildValue("(Ns)", ecpt_pywrapout(me
, &pp
), qd
.p
);
342 static PyObject
*epmeth_fromraw(PyObject
*me
, PyObject
*arg
)
350 if (!PyArg_ParseTuple(arg
, "O&:fromraw", convbin
, &in
)) return (0);
351 buf_init(&b
, (/*unconst*/ void *)in
.p
, in
.sz
);
353 if (ec_getraw(cc
, &b
, &pp
))
356 rc
= Py_BuildValue("(NN)", ecpt_pywrap(me
, &pp
), bytestring_pywrapbuf(&b
));
361 static PyObject
*epmeth_os2ecp(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
367 unsigned f
= EC_XONLY
| EC_LSB
| EC_SORT
| EC_EXPLY
;
369 static const char *const kwlist
[] = { "buf", "flags", 0 };
371 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&|O&:os2ecp", KWLIST
,
372 convbin
, &in
, convuint
, &f
))
374 buf_init(&b
, (/*unconst*/ void *)in
.p
, in
.sz
);
376 if (ec_os2ecp(cc
, f
, &b
, &pp
)) VALERR("bad point");
378 rc
= Py_BuildValue("(NN)", ecpt_pywrap(me
, &pp
), bytestring_pywrapbuf(&b
));
383 static PyObject
*epncget_ix(PyObject
*me
, void *hunoz
)
387 if (EC_ATINF(ECPT_P(me
))) RETURN_NONE
;
389 rc
= mp_pywrap(MP_COPY(p
.x
));
394 static PyObject
*epncget_iy(PyObject
*me
, void *hunoz
)
398 if (EC_ATINF(ECPT_P(me
))) RETURN_NONE
;
400 rc
= mp_pywrap(MP_COPY(p
.y
));
405 static PyObject
*epncget_point(PyObject
*me
, void *hunoz
)
408 static PyObject
*epget_point(PyObject
*me
, void *hunoz
)
412 return (ecpt_pywrapout(ecpt_pytype
, &p
));
415 static PyObject
*epget_x(PyObject
*me
, void *hunoz
)
417 ec_curve
*c
= ECPT_C(me
);
419 PyObject
*fobj
= ECPT_FOBJ(me
);
423 if (EC_ATINF(pp
)) RETURN_NONE
;
425 rc
= fe_pywrap(fobj
, F_IN(c
->f
, MP_NEW
, p
.x
));
430 static PyObject
*epget_y(PyObject
*me
, void *hunoz
)
432 ec_curve
*c
= ECPT_C(me
);
434 PyObject
*fobj
= ECPT_FOBJ(me
);
438 if (EC_ATINF(pp
)) RETURN_NONE
;
440 rc
= fe_pywrap(fobj
, F_IN(c
->f
, MP_NEW
, p
.y
));
445 static PyObject
*epget__x(PyObject
*me
, void *hunoz
)
447 if (EC_ATINF(ECPT_P(me
))) RETURN_NONE
;
448 return (fe_pywrap(ECPT_FOBJ(me
), MP_COPY(ECPT_P(me
)->x
)));
451 static PyObject
*epget__y(PyObject
*me
, void *hunoz
)
453 if (EC_ATINF(ECPT_P(me
))) RETURN_NONE
;
454 return (fe_pywrap(ECPT_FOBJ(me
), MP_COPY(ECPT_P(me
)->y
)));
457 static PyObject
*epget__z(PyObject
*me
, void *hunoz
)
459 if (EC_ATINF(ECPT_P(me
)) || !ECPT_P(me
)->z
) RETURN_NONE
;
460 return (fe_pywrap(ECPT_FOBJ(me
), MP_COPY(ECPT_P(me
)->z
)));
463 static mp
*coord_in(field
*f
, PyObject
*x
)
466 if (FE_PYCHECK(x
) && FE_F(x
) == f
)
467 return (MP_COPY(FE_X(x
)));
468 else if ((xx
= getmp(x
)) == 0)
471 return (F_IN(f
, xx
, xx
));
474 static int ecptxl_3(ec_curve
*c
, ec
*p
,
475 PyObject
*x
, PyObject
*y
, PyObject
*z
)
479 if (!x
|| !y
|| !z
) TYERR("missing argument");
480 if (!c
) VALERR("internal form with no curve!");
481 if ((p
->x
= coord_in(c
->f
, x
)) == 0 ||
482 (p
->y
= coord_in(c
->f
, y
)) == 0 ||
483 (z
!= Py_None
&& (p
->z
= coord_in(c
->f
, z
)) == 0))
485 if (!p
->z
) p
->z
= MP_COPY(c
->f
->one
); /* just in case */
491 static int ecptxl_2(ec_curve
*c
, ec
*p
, PyObject
*x
, PyObject
*y
)
495 if (!x
|| !y
) TYERR("missing argument");
496 if ((p
->x
= getmp(x
)) == 0 ||
497 (p
->y
= getmp(y
)) == 0)
499 if (c
) EC_IN(c
, p
, p
);
505 static int ecptxl_1(ec_curve
*c
, ec
*p
, PyObject
*x
)
508 PyObject
*y
= 0, *z
= 0, *t
= 0;
514 if (!x
|| x
== Py_None
)
516 else if (ECPT_PYCHECK(x
)) {
519 } else if (TEXT_CHECK(x
)) {
522 if (!ec_ptparse(&qd
, p
))
525 } else if (c
&& (xx
= tomp(x
)) != 0) {
526 xx
= F_IN(c
->f
, xx
, xx
);
527 if (!EC_FIND(c
, p
, xx
)) VALERR("not on the curve");
528 } else if (PySequence_Check(x
)) {
530 n
= PySequence_Size(t
); if (n
< 0) goto end
;
531 if (n
!= 2 && (n
!= 3 || !c
))
532 TYERR("want sequence of two or three items");
533 if ((x
= PySequence_GetItem(t
, 0)) == 0 ||
534 (y
= PySequence_GetItem(t
, 1)) == 0 ||
535 (n
== 3 && (z
= PySequence_GetItem(t
, 2)) == 0))
537 rc
= (n
== 2) ?
ecptxl_2(c
, p
, x
, y
) : ecptxl_3(c
, p
, x
, y
, z
);
540 TYERR("can't convert to curve point");
544 if (c
) EC_IN(c
, p
, p
);
548 Py_XDECREF(x
); Py_XDECREF(y
); Py_XDECREF(z
); Py_XDECREF(t
);
553 static int ecptxl(ec_curve
*c
, ec
*p
, PyObject
*x
, PyObject
*y
, PyObject
*z
)
556 return (ecptxl_3(c
, p
, x
, y
, z
));
558 return (ecptxl_2(c
, p
, x
, y
));
560 return (ecptxl_1(c
, p
, x
));
563 static PyObject
*ecptnc_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
565 PyObject
*x
= 0, *y
= 0, *z
= 0;
567 static const char *const kwlist
[] = { "x", "y", 0 };
569 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|OO:new", KWLIST
, &x
, &y
) ||
570 ecptxl(0, &p
, x
, y
, z
))
572 return (ecpt_pywrapout(ty
, &p
));
574 mp_drop(p
.x
); mp_drop(p
.y
); mp_drop(p
.z
);
578 static PyObject
*ecpt_pyint(PyObject
*me
)
583 if (EC_ATINF(ECPT_P(me
))) VALERR("point at infinity");
585 if (!mp_tolong_checked(p
.x
, &l
, 0)) rc
= PyInt_FromLong(l
);
586 else rc
= mp_topylong(p
.x
);
592 static PyObject
*ecpt_pylong(PyObject
*me
)
596 if (EC_ATINF(ECPT_P(me
))) VALERR("point at infinity");
598 rc
= mp_topylong(p
.x
);
604 static PyObject
*ecpt_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
606 PyObject
*x
= 0, *y
= 0, *z
= 0;
608 static const char *const kwlist
[] = { "x", "y", "z", 0 };
610 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|OOO:new", KWLIST
,
612 ecptxl(ECCURVE_C(ty
), &p
, x
, y
, z
))
614 return (ecpt_pywrap((PyObject
*)ty
, &p
));
616 mp_drop(p
.x
); mp_drop(p
.y
); mp_drop(p
.z
);
620 static const PyGetSetDef ecptnc_pygetset
[] = {
621 #define GETSETNAME(op, name) epnc##op##_##name
622 GET (ix
, "P.ix -> integer x coordinate of P")
623 GET (iy
, "P.iy -> integer y coordinate of P")
624 GET (point
, "P.point -> standalone curve point (no-op)")
629 static const PyMethodDef ecptnc_pymethods
[] = {
630 #define METHNAME(func) epmeth_##func
631 NAMETH(tobuf
, "X.tobuf() -> BIN")
632 CMTH (frombuf
, "frombuf(STR) -> (P, REST)")
633 CMTH (parse
, "parse(STR) -> (P, REST)")
638 static const PyNumberMethods ecpt_pynumber
= {
640 0, /* @nb_subtract@ */
641 0, /* @nb_multiply@ */
643 0, /* @nb_remainder@ */
646 0, /* @nb_negative@ */
647 0, /* @nb_positive@ */
648 0, /* @nb_absolute@ */
649 ecpt_pynonzerop
, /* @nb_nonzero@ */
657 ecpt_pyint
, /* @nb_int@ */
658 ecpt_pylong
, /* @nb_long@ */
663 0, /* @nb_inplace_add@ */
664 0, /* @nb_inplace_subtract@ */
665 0, /* @nb_inplace_multiply@ */
666 0, /* @nb_inplace_divide@ */
667 0, /* @nb_inplace_remainder@ */
668 0, /* @nb_inplace_power@ */
669 0, /* @nb_inplace_lshift@ */
670 0, /* @nb_inplace_rshift@ */
671 0, /* @nb_inplace_and@ */
672 0, /* @nb_inplace_xor@ */
673 0, /* @nb_inplace_or@ */
675 0, /* @nb_floor_divide@ */
676 0, /* @nb_true_divide@ */
677 0, /* @nb_inplace_floor_divide@ */
678 0, /* @nb_inplace_true_divide@ */
681 static const PyTypeObject ecpt_pytype_skel
= {
682 PyVarObject_HEAD_INIT(0, 0) /* Header */
683 "ECPt", /* @tp_name@ */
684 sizeof(ecpt_pyobj
), /* @tp_basicsize@ */
685 0, /* @tp_itemsize@ */
687 ecpt_pydealloc
, /* @tp_dealloc@ */
689 0, /* @tp_getattr@ */
690 0, /* @tp_setattr@ */
691 0, /* @tp_compare@ */
693 PYNUMBER(ecpt
), /* @tp_as_number@ */
694 0, /* @tp_as_sequence@ */
695 0, /* @tp_as_mapping@ */
696 ecpt_pyhash
, /* @tp_hash@ */
699 0, /* @tp_getattro@ */
700 0, /* @tp_setattro@ */
701 0, /* @tp_as_buffer@ */
702 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
703 Py_TPFLAGS_CHECKTYPES
|
707 "ECPt([X, [Y]]): elliptic curve points, not associated with any curve.\n"
708 " X alone may be None, an existing point, a string 'X, Y', an\n"
709 " x-coordinate, or a pair (X, Y); X and Y should be a coordinate pair.",
711 0, /* @tp_traverse@ */
713 ecpt_pyrichcompare
, /* @tp_richcompare@ */
714 0, /* @tp_weaklistoffset@ */
716 0, /* @tp_iternext@ */
717 PYMETHODS(ecptnc
), /* @tp_methods@ */
718 0, /* @tp_members@ */
719 PYGETSET(ecptnc
), /* @tp_getset@ */
722 0, /* @tp_descr_get@ */
723 0, /* @tp_descr_set@ */
724 0, /* @tp_dictoffset@ */
726 PyType_GenericAlloc
, /* @tp_alloc@ */
727 ecptnc_pynew
, /* @tp_new@ */
732 static const PyMemberDef ecpt_pymembers
[] = {
733 #define MEMBERSTRUCT ecpt_pyobj
734 MEMRNM(curve
, T_OBJECT
, ob_type
, READONLY
,
735 "P.curve -> elliptic curve containing P")
740 static const PyGetSetDef ecpt_pygetset
[] = {
741 #define GETSETNAME(op, name) ep##op##_##name
742 GET (point
, "P.point -> standalone curve point")
743 GET (x
, "P.x -> Cartesian x coordinate of P")
744 GET (y
, "P.y -> Cartesian y coordinate of P")
745 GET (_x
, "P._x -> internal x coordinate of P")
746 GET (_y
, "P._y -> internal y coordinate of P")
747 GET (_z
, "P._z -> internal z coordinate of P, or None")
752 static const PyMethodDef ecpt_pymethods
[] = {
753 #define METHNAME(func) epmeth_##func
754 NAMETH(toraw
, "X.toraw() -> BIN")
755 KWMETH(ec2osp
, "X.ec2osp([flags = EC_EXPLY]) -> BIN")
756 NAMETH(dbl
, "X.dbl() -> X + X")
757 NAMETH(oncurvep
, "X.oncurvep() -> BOOL")
758 CMTH (fromraw
, "fromraw(STR) -> (P, REST)")
759 KWCMTH(os2ecp
, "os2ecp(STR, [flags = ...]) -> (P, REST)")
764 static const PyNumberMethods ecptcurve_pynumber
= {
765 ecpt_pyadd
, /* @nb_add@ */
766 ecpt_pysub
, /* @nb_subtract@ */
767 ecpt_pymul
, /* @nb_multiply@ */
769 0, /* @nb_remainder@ */
772 ecpt_pyneg
, /* @nb_negative@ */
773 ecpt_pyid
, /* @nb_positive@ */
774 0, /* @nb_absolute@ */
775 0, /* @nb_nonzero@ */
789 0, /* @nb_inplace_add@ */
790 0, /* @nb_inplace_subtract@ */
791 0, /* @nb_inplace_multiply@ */
792 0, /* @nb_inplace_divide@ */
793 0, /* @nb_inplace_remainder@ */
794 0, /* @nb_inplace_power@ */
795 0, /* @nb_inplace_lshift@ */
796 0, /* @nb_inplace_rshift@ */
797 0, /* @nb_inplace_and@ */
798 0, /* @nb_inplace_xor@ */
799 0, /* @nb_inplace_or@ */
801 0, /* @nb_floor_divide@ */
802 0, /* @nb_true_divide@ */
803 0, /* @nb_inplace_floor_divide@ */
804 0, /* @nb_inplace_true_divide@ */
807 static const PyTypeObject ecptcurve_pytype_skel
= {
808 PyVarObject_HEAD_INIT(0, 0) /* Header */
809 "ECPtCurve", /* @tp_name@ */
810 sizeof(ecpt_pyobj
), /* @tp_basicsize@ */
811 0, /* @tp_itemsize@ */
813 ecpt_pydealloc
, /* @tp_dealloc@ */
815 0, /* @tp_getattr@ */
816 0, /* @tp_setattr@ */
817 0, /* @tp_compare@ */
819 PYNUMBER(ecptcurve
), /* @tp_as_number@ */
820 0, /* @tp_as_sequence@ */
821 0, /* @tp_as_mapping@ */
825 0, /* @tp_getattro@ */
826 0, /* @tp_setattro@ */
827 0, /* @tp_as_buffer@ */
828 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
829 Py_TPFLAGS_CHECKTYPES
|
833 "Elliptic curve points; abstract base class for points on given curves.",
835 0, /* @tp_traverse@ */
837 0, /* @tp_richcompare@ */
838 0, /* @tp_weaklistoffset@ */
840 0, /* @tp_iternext@ */
841 PYMETHODS(ecpt
), /* @tp_methods@ */
842 PYMEMBERS(ecpt
), /* @tp_members@ */
843 PYGETSET(ecpt
), /* @tp_getset@ */
846 0, /* @tp_descr_get@ */
847 0, /* @tp_descr_set@ */
848 0, /* @tp_dictoffset@ */
850 PyType_GenericAlloc
, /* @tp_alloc@ */
851 abstract_pynew
, /* @tp_new@ */
856 /*----- Elliptic curves themselves ----------------------------------------*/
858 static PyObject
*eccurve_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
862 assert(ECCURVE_PYCHECK(x
));
863 if (!ECCURVE_PYCHECK(y
)) RETURN_NOTIMPL
;
864 b
= ec_samep(ECCURVE_C(x
), ECCURVE_C(y
));
867 case Py_NE
: b
= !b
; break;
868 default: TYERR("can't order elliptic curves");
875 static PyObject
*ecmmul_id(PyObject
*me
)
876 { ec p
= EC_INIT
; return (ecpt_pywrap(me
, &p
)); }
878 static int ecmmul_fill(void *pp
, PyObject
*me
, PyObject
*x
, PyObject
*m
)
880 ec_mulfactor
*f
= pp
;
883 if (getecpt(ECCURVE_C(me
), &f
->base
, x
) ||
884 (f
->exp
= getmp(m
)) == 0)
889 static PyObject
*ecmmul_exp(PyObject
*me
, void *pp
, int n
)
892 ec_immul(ECCURVE_C(me
), &p
, pp
, n
);
893 return (ecpt_pywrap(me
, &p
));
896 static void ecmmul_drop(void *pp
)
898 ec_mulfactor
*f
= pp
;
899 EC_DESTROY(&f
->base
);
903 static PyObject
*ecmeth_mmul(PyObject
*me
, PyObject
*arg
)
905 return (mexp_common(me
, arg
, sizeof(ec_mulfactor
),
906 ecmmul_id
, ecmmul_fill
, ecmmul_exp
, ecmmul_drop
));
909 static void eccurve_pydealloc(PyObject
*me
)
911 ec_destroycurve(ECCURVE_C(me
));
912 Py_DECREF(ECCURVE_FOBJ(me
));
913 PyType_Type
.tp_dealloc(me
);
916 static PyObject
*ecmeth_find(PyObject
*me
, PyObject
*arg
)
923 if (!PyArg_ParseTuple(arg
, "O:find", &x
)) goto end
;
924 if (FIELD_PYCHECK(x
) && FE_F(x
) == ECCURVE_C(me
)->f
)
925 xx
= MP_COPY(FE_X(x
));
926 else if ((xx
= getmp(x
)) == 0)
929 xx
= F_IN(ECCURVE_C(me
)->f
, xx
, xx
);
930 if (EC_FIND(ECCURVE_C(me
), &p
, xx
) == 0)
931 VALERR("not on the curve");
932 rc
= ecpt_pywrap(me
, &p
);
938 static PyObject
*ecmeth_rand(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
940 static const char *const kwlist
[] = { "rng", 0 };
941 grand
*r
= &rand_global
;
944 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:rand", KWLIST
,
947 ec_rand(ECCURVE_C(me
), &p
, r
);
948 EC_IN(ECCURVE_C(me
), &p
, &p
);
949 return (ecpt_pywrap(me
, &p
));
952 static PyObject
*ecmeth_parse(PyObject
*me
, PyObject
*arg
)
959 if (!PyArg_ParseTuple(arg
, "s:parse", &p
)) goto end
;
961 if ((c
= ec_curveparse(&qd
)) == 0) VALERR(qd
.e
);
962 rc
= eccurve_pywrap(0, c
);
967 static PyObject
*eccurve_dopywrap(PyTypeObject
*ty
,
968 PyObject
*fobj
, ec_curve
*c
)
970 eccurve_pyobj
*cobj
= newtype(ty
, 0, c
->ops
->name
);
973 cobj
->ty
.ht_type
.tp_basicsize
= sizeof(ecpt_pyobj
);
974 cobj
->ty
.ht_type
.tp_base
= ecptcurve_pytype
;
975 Py_INCREF(ecptcurve_pytype
);
976 cobj
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
977 Py_TPFLAGS_BASETYPE
|
978 Py_TPFLAGS_CHECKTYPES
|
979 Py_TPFLAGS_HEAPTYPE
);
980 cobj
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
981 cobj
->ty
.ht_type
.tp_free
= 0;
982 cobj
->ty
.ht_type
.tp_new
= ecpt_pynew
;
983 typeready(&cobj
->ty
.ht_type
);
984 return ((PyObject
*)cobj
);
987 PyObject
*eccurve_pywrap(PyObject
*fobj
, ec_curve
*c
)
992 fobj
= field_pywrap(c
->f
);
995 assert(FIELD_F(fobj
) == c
->f
);
996 if (STRCMP(EC_NAME(c
), ==, "prime"))
997 ty
= ecprimecurve_pytype
;
998 else if (STRCMP(EC_NAME(c
), ==, "primeproj"))
999 ty
= ecprimeprojcurve_pytype
;
1000 else if (STRCMP(EC_NAME(c
), ==, "bin"))
1001 ty
= ecbincurve_pytype
;
1002 else if (STRCMP(EC_NAME(c
), ==, "binproj"))
1003 ty
= ecbinprojcurve_pytype
;
1006 return (eccurve_dopywrap(ty
, fobj
, c
));
1009 static PyObject
*eccurve_pynew(PyTypeObject
*ty
,
1010 ec_curve
*(*make
)(field
*, mp
*, mp
*),
1011 PyObject
*arg
, PyObject
*kw
)
1015 static const char *const kwlist
[] = { "field", "a", "b", 0 };
1016 mp
*aa
= 0, *bb
= 0;
1018 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!O&O&", KWLIST
,
1019 field_pytype
, &fobj
,
1020 convmp
, &aa
, convmp
, &bb
))
1023 cobj
= eccurve_dopywrap(ty
, fobj
, make(FIELD_F(fobj
), aa
, bb
));
1025 if (aa
) MP_DROP(aa
);
1026 if (bb
) MP_DROP(bb
);
1030 static PyObject
*ecget_name(PyObject
*me
, void *hunoz
)
1031 { return (TEXT_FROMSTR(EC_NAME(ECCURVE_C(me
)))); }
1033 static PyObject
*ecget_a(PyObject
*me
, void *hunoz
)
1034 { return (fe_pywrap(ECCURVE_FOBJ(me
), MP_COPY(ECCURVE_C(me
)->a
))); }
1036 static PyObject
*ecget_b(PyObject
*me
, void *hunoz
)
1037 { return (fe_pywrap(ECCURVE_FOBJ(me
), MP_COPY(ECCURVE_C(me
)->b
))); }
1039 static PyObject
*ecget_field(PyObject
*me
, void *hunoz
)
1040 { RETURN_OBJ(ECCURVE_FOBJ(me
)); }
1042 static PyObject
*ecget_inf(PyObject
*me
, void *hunoz
)
1043 { ec inf
= EC_INIT
; return (ecpt_pywrap(me
, &inf
)); }
1045 static const PyGetSetDef eccurve_pygetset
[] = {
1046 #define GETSETNAME(op, name) ec##op##_##name
1047 GET (name
, "E.name -> name of this kind of curve")
1048 GET (a
, "E.a -> first parameter of curve")
1049 GET (b
, "E.b -> second parameter of curve")
1050 GET (field
, "E.field -> finite field containing this curve")
1051 GET (inf
, "E.inf -> point at infinity of this curve")
1056 static const PyMethodDef eccurve_pymethods
[] = {
1057 #define METHNAME(name) ecmeth_##name
1058 METH (mmul
, "E.mmul([(P0, N0), (P1, N1), ...]) = N0 P0 + N1 P1 + ...")
1059 METH (find
, "E.find(X) -> P")
1060 KWMETH(rand
, "E.rand([rng = rand]) -> P")
1061 SMTH (parse
, "parse(STR) -> (E, REST)")
1066 static const PyTypeObject eccurve_pytype_skel
= {
1067 PyVarObject_HEAD_INIT(0, 0) /* Header */
1068 "ECCurve", /* @tp_name@ */
1069 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1070 0, /* @tp_itemsize@ */
1072 eccurve_pydealloc
, /* @tp_dealloc@ */
1074 0, /* @tp_getattr@ */
1075 0, /* @tp_setattr@ */
1076 0, /* @tp_compare@ */
1078 0, /* @tp_as_number@ */
1079 0, /* @tp_as_sequence@ */
1080 0, /* @tp_as_mapping@ */
1084 0, /* @tp_getattro@ */
1085 0, /* @tp_setattro@ */
1086 0, /* @tp_as_buffer@ */
1087 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1088 Py_TPFLAGS_BASETYPE
,
1091 "An elliptic curve. Abstract class.",
1093 0, /* @tp_traverse@ */
1095 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1096 0, /* @tp_weaklistoffset@ */
1098 0, /* @tp_iternext@ */
1099 PYMETHODS(eccurve
), /* @tp_methods@ */
1100 0, /* @tp_members@ */
1101 PYGETSET(eccurve
), /* @tp_getset@ */
1104 0, /* @tp_descr_get@ */
1105 0, /* @tp_descr_set@ */
1106 0, /* @tp_dictoffset@ */
1108 PyType_GenericAlloc
, /* @tp_alloc@ */
1109 abstract_pynew
, /* @tp_new@ */
1114 static PyObject
*ecprimecurve_pynew(PyTypeObject
*ty
,
1115 PyObject
*arg
, PyObject
*kw
)
1117 return (eccurve_pynew(ty
, ec_prime
, arg
, kw
));
1120 static const PyTypeObject ecprimecurve_pytype_skel
= {
1121 PyVarObject_HEAD_INIT(0, 0) /* Header */
1122 "ECPrimeCurve", /* @tp_name@ */
1123 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1124 0, /* @tp_itemsize@ */
1126 eccurve_pydealloc
, /* @tp_dealloc@ */
1128 0, /* @tp_getattr@ */
1129 0, /* @tp_setattr@ */
1130 0, /* @tp_compare@ */
1132 0, /* @tp_as_number@ */
1133 0, /* @tp_as_sequence@ */
1134 0, /* @tp_as_mapping@ */
1138 0, /* @tp_getattro@ */
1139 0, /* @tp_setattro@ */
1140 0, /* @tp_as_buffer@ */
1141 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1142 Py_TPFLAGS_BASETYPE
,
1145 "ECPrimeCurve(FIELD, A, B): an elliptic curve over a prime field.\n"
1146 " Use ECPrimeProjCurve instead.",
1148 0, /* @tp_traverse@ */
1150 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1151 0, /* @tp_weaklistoffset@ */
1153 0, /* @tp_iternext@ */
1154 0, /* @tp_methods@ */
1155 0, /* @tp_members@ */
1156 0, /* @tp_getset@ */
1159 0, /* @tp_descr_get@ */
1160 0, /* @tp_descr_set@ */
1161 0, /* @tp_dictoffset@ */
1163 PyType_GenericAlloc
, /* @tp_alloc@ */
1164 ecprimecurve_pynew
, /* @tp_new@ */
1169 static PyObject
*ecprimeprojcurve_pynew(PyTypeObject
*ty
,
1170 PyObject
*arg
, PyObject
*kw
)
1172 return (eccurve_pynew(ty
, ec_primeproj
, arg
, kw
));
1175 static const PyTypeObject ecprimeprojcurve_pytype_skel
= {
1176 PyVarObject_HEAD_INIT(0, 0) /* Header */
1177 "ECPrimeProjCurve", /* @tp_name@ */
1178 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1179 0, /* @tp_itemsize@ */
1181 eccurve_pydealloc
, /* @tp_dealloc@ */
1183 0, /* @tp_getattr@ */
1184 0, /* @tp_setattr@ */
1185 0, /* @tp_compare@ */
1187 0, /* @tp_as_number@ */
1188 0, /* @tp_as_sequence@ */
1189 0, /* @tp_as_mapping@ */
1193 0, /* @tp_getattro@ */
1194 0, /* @tp_setattro@ */
1195 0, /* @tp_as_buffer@ */
1196 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1197 Py_TPFLAGS_BASETYPE
,
1200 "ECPrimeProjCurve(FIELD, A, B): an elliptic curve over a prime field\n"
1201 " using projective coordinates.",
1203 0, /* @tp_traverse@ */
1205 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1206 0, /* @tp_weaklistoffset@ */
1208 0, /* @tp_iternext@ */
1209 0, /* @tp_methods@ */
1210 0, /* @tp_members@ */
1211 0, /* @tp_getset@ */
1214 0, /* @tp_descr_get@ */
1215 0, /* @tp_descr_set@ */
1216 0, /* @tp_dictoffset@ */
1218 PyType_GenericAlloc
, /* @tp_alloc@ */
1219 ecprimeprojcurve_pynew
, /* @tp_new@ */
1224 static PyObject
*ecbincurve_pynew(PyTypeObject
*ty
,
1225 PyObject
*arg
, PyObject
*kw
)
1227 return (eccurve_pynew(ty
, ec_bin
, arg
, kw
));
1230 static const PyTypeObject ecbincurve_pytype_skel
= {
1231 PyVarObject_HEAD_INIT(0, 0) /* Header */
1232 "ECBinCurve", /* @tp_name@ */
1233 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1234 0, /* @tp_itemsize@ */
1236 eccurve_pydealloc
, /* @tp_dealloc@ */
1238 0, /* @tp_getattr@ */
1239 0, /* @tp_setattr@ */
1240 0, /* @tp_compare@ */
1242 0, /* @tp_as_number@ */
1243 0, /* @tp_as_sequence@ */
1244 0, /* @tp_as_mapping@ */
1248 0, /* @tp_getattro@ */
1249 0, /* @tp_setattro@ */
1250 0, /* @tp_as_buffer@ */
1251 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1252 Py_TPFLAGS_BASETYPE
,
1255 "ECBinCurve(FIELD, A, B): an elliptic curve over a binary field.\n"
1256 " Use ECBinProjCurve instead.",
1258 0, /* @tp_traverse@ */
1260 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1261 0, /* @tp_weaklistoffset@ */
1263 0, /* @tp_iternext@ */
1264 0, /* @tp_methods@ */
1265 0, /* @tp_members@ */
1266 0, /* @tp_getset@ */
1269 0, /* @tp_descr_get@ */
1270 0, /* @tp_descr_set@ */
1271 0, /* @tp_dictoffset@ */
1273 PyType_GenericAlloc
, /* @tp_alloc@ */
1274 ecbincurve_pynew
, /* @tp_new@ */
1279 static PyObject
*ecbinprojcurve_pynew(PyTypeObject
*ty
,
1280 PyObject
*arg
, PyObject
*kw
)
1282 return (eccurve_pynew(ty
, ec_binproj
, arg
, kw
));
1285 static const PyTypeObject ecbinprojcurve_pytype_skel
= {
1286 PyVarObject_HEAD_INIT(0, 0) /* Header */
1287 "ECBinProjCurve", /* @tp_name@ */
1288 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1289 0, /* @tp_itemsize@ */
1291 eccurve_pydealloc
, /* @tp_dealloc@ */
1293 0, /* @tp_getattr@ */
1294 0, /* @tp_setattr@ */
1295 0, /* @tp_compare@ */
1297 0, /* @tp_as_number@ */
1298 0, /* @tp_as_sequence@ */
1299 0, /* @tp_as_mapping@ */
1303 0, /* @tp_getattro@ */
1304 0, /* @tp_setattro@ */
1305 0, /* @tp_as_buffer@ */
1306 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1307 Py_TPFLAGS_BASETYPE
,
1310 "ECBinProjCurve(FIELD, A, B): an elliptic curve over a binary field,\n"
1311 " using projective coordinates.",
1313 0, /* @tp_traverse@ */
1315 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1316 0, /* @tp_weaklistoffset@ */
1318 0, /* @tp_iternext@ */
1319 0, /* @tp_methods@ */
1320 0, /* @tp_members@ */
1321 0, /* @tp_getset@ */
1324 0, /* @tp_descr_get@ */
1325 0, /* @tp_descr_set@ */
1326 0, /* @tp_dictoffset@ */
1328 PyType_GenericAlloc
, /* @tp_alloc@ */
1329 ecbinprojcurve_pynew
, /* @tp_new@ */
1334 /*----- Curve info --------------------------------------------------------*/
1336 void ecinfo_copy(ec_info
*eic
, const ec_info
*ei
)
1338 eic
->c
= eccurve_copy(ei
->c
);
1340 EC_COPY(&eic
->g
, &ei
->g
);
1341 eic
->r
= MP_COPY(ei
->r
);
1342 eic
->h
= MP_COPY(ei
->h
);
1345 PyObject
*ecinfo_pywrap(ec_info
*ei
)
1349 o
= PyObject_NEW(ecinfo_pyobj
, ecinfo_pytype
);
1351 o
->cobj
= eccurve_pywrap(0, o
->ei
.c
);
1353 return ((PyObject
*)o
);
1356 static void ecinfo_pydealloc(PyObject
*me
)
1358 ec_info
*ei
= ECINFO_EI(me
);
1362 Py_DECREF(ECINFO_COBJ(me
));
1366 static PyObject
*ecinfo_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
1370 static const char *const kwlist
[] = { "curve", "G", "r", "h", 0 };
1371 ecinfo_pyobj
*rc
= 0;
1373 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!O!O&O&:new", KWLIST
,
1374 eccurve_pytype
, &e
, ecpt_pytype
, &g
,
1375 convmp
, &ei
.r
, convmp
, &ei
.h
))
1377 if (ECPT_C(g
) != ECCURVE_C(e
) && !ec_samep(ECPT_C(g
), ECCURVE_C(e
)))
1378 TYERR("point not from this curve");
1379 ei
.c
= ECCURVE_C(e
);
1381 EC_OUT(ei
.c
, &ei
.g
, ECPT_P(g
));
1382 rc
= (ecinfo_pyobj
*)ty
->tp_alloc(ty
, 0);
1385 Py_INCREF(rc
->cobj
);
1386 return ((PyObject
*)rc
);
1394 static PyObject
*eimeth_parse(PyObject
*me
, PyObject
*arg
)
1401 if (!PyArg_ParseTuple(arg
, "s:parse", &p
)) goto end
;
1403 if (ec_infoparse(&qd
, &ei
)) VALERR(qd
.e
);
1404 rc
= Py_BuildValue("(Ns)", ecinfo_pywrap(&ei
), qd
.p
);
1409 static PyObject
*ecinfo_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
1411 int b
= ec_sameinfop(ECINFO_EI(x
), ECINFO_EI(y
));
1415 default: TYERR("can't order elliptic curve infos");
1417 return (getbool(b
));
1422 static PyObject
*eimeth_check(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1424 static const char *const kwlist
[] = { "rng", 0 };
1425 grand
*r
= &rand_global
;
1428 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:check", KWLIST
,
1431 if ((p
= ec_checkinfo(ECINFO_EI(me
), r
)) != 0)
1438 static PyObject
*eiget_curve(PyObject
*me
, void *hunoz
)
1439 { RETURN_OBJ(ECINFO_COBJ(me
)); }
1441 static PyObject
*eiget_G(PyObject
*me
, void *hunoz
)
1443 ec_info
*ei
= ECINFO_EI(me
);
1445 EC_IN(ei
->c
, &p
, &ei
->g
);
1446 return (ecpt_pywrap(ECINFO_COBJ(me
), &p
));
1449 static PyObject
*eiget_r(PyObject
*me
, void *hunoz
)
1450 { return (mp_pywrap(MP_COPY(ECINFO_EI(me
)->r
))); }
1452 static PyObject
*eiget_h(PyObject
*me
, void *hunoz
)
1453 { return (mp_pywrap(MP_COPY(ECINFO_EI(me
)->h
))); }
1455 static const PyGetSetDef ecinfo_pygetset
[] = {
1456 #define GETSETNAME(op, name) ei##op##_##name
1457 GET (curve
, "I.curve -> the elliptic curve")
1458 GET (G
, "I.G -> generator point for the group")
1459 GET (r
, "I.r -> order of the group (and hence of G")
1460 GET (h
, "I.h -> cofactor of the group")
1465 static const PyMethodDef ecinfo_pymethods
[] = {
1466 #define METHNAME(name) eimeth_##name
1467 KWMETH(check
, "I.check([rng = rand]) -> None")
1468 SMTH (parse
, "parse(STR) -> (I, REST)")
1473 static const PyTypeObject ecinfo_pytype_skel
= {
1474 PyVarObject_HEAD_INIT(0, 0) /* Header */
1475 "ECInfo", /* @tp_name@ */
1476 sizeof(ecinfo_pyobj
), /* @tp_basicsize@ */
1477 0, /* @tp_itemsize@ */
1479 ecinfo_pydealloc
, /* @tp_dealloc@ */
1481 0, /* @tp_getattr@ */
1482 0, /* @tp_setattr@ */
1483 0, /* @tp_compare@ */
1485 0, /* @tp_as_number@ */
1486 0, /* @tp_as_sequence@ */
1487 0, /* @tp_as_mapping@ */
1491 0, /* @tp_getattro@ */
1492 0, /* @tp_setattro@ */
1493 0, /* @tp_as_buffer@ */
1494 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1495 Py_TPFLAGS_BASETYPE
,
1498 "ECInfo(CURVE, G, R, H): elliptic curve domain parameters.",
1500 0, /* @tp_traverse@ */
1502 ecinfo_pyrichcompare
, /* @tp_richcompare@ */
1503 0, /* @tp_weaklistoffset@ */
1505 0, /* @tp_iternext@ */
1506 PYMETHODS(ecinfo
), /* @tp_methods@ */
1507 0, /* @tp_members@ */
1508 PYGETSET(ecinfo
), /* @tp_getset@ */
1511 0, /* @tp_descr_get@ */
1512 0, /* @tp_descr_set@ */
1513 0, /* @tp_dictoffset@ */
1515 PyType_GenericAlloc
, /* @tp_alloc@ */
1516 ecinfo_pynew
, /* @tp_new@ */
1521 /*----- Setup -------------------------------------------------------------*/
1523 static const struct nameval consts
[] = {
1524 CONST(EC_XONLY
), CONST(EC_YBIT
), CONST(EC_LSB
),
1525 CONST(EC_CMPR
), CONST(EC_EXPLY
), CONST(EC_SORT
),
1529 void ec_pyinit(void)
1531 INITTYPE(ecpt
, root
);
1532 INITTYPE(ecptcurve
, ecpt
);
1533 INITTYPE(eccurve
, type
);
1534 INITTYPE(ecprimecurve
, eccurve
);
1535 INITTYPE(ecprimeprojcurve
, ecprimecurve
);
1536 INITTYPE(ecbincurve
, eccurve
);
1537 INITTYPE(ecbinprojcurve
, ecbincurve
);
1538 INITTYPE(ecinfo
, root
);
1541 static const char *ec_namefn(const void *p
)
1542 { const ecentry
*ec
= p
; return (ec
->name
); }
1544 static int ec_ixfn(const void *p
)
1546 const ecentry
*ec
= p
;
1549 for (i
= 0; ectab
[i
].name
; i
++)
1550 if (ectab
[i
].data
== ec
->data
) return (i
);
1554 static PyObject
*ec_valfn(int i
)
1558 ec_infofromdata(&ei
, ectab
[i
].data
);
1559 return (ecinfo_pywrap(&ei
));
1562 void ec_pyinsert(PyObject
*mod
)
1564 INSERT("ECPt", ecpt_pytype
);
1565 INSERT("ECPtCurve", ecptcurve_pytype
);
1566 INSERT("ECCurve", eccurve_pytype
);
1567 INSERT("ECPrimeCurve", ecprimecurve_pytype
);
1568 INSERT("ECPrimeProjCurve", ecprimeprojcurve_pytype
);
1569 INSERT("ECBinCurve", ecbincurve_pytype
);
1570 INSERT("ECBinProjCurve", ecbinprojcurve_pytype
);
1571 INSERT("ECInfo", ecinfo_pytype
);
1572 INSERT("eccurves", make_grouptab(ectab
, sizeof(*ectab
),
1573 ec_namefn
, ec_ixfn
, ec_valfn
));
1574 setconstants(mod
, consts
);
1577 /*----- That's all, folks -------------------------------------------------*/