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 long 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
, PyString_AS_STRING(rc
), n
);
257 _PyString_Resize(&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
);
273 p
= PyString_AS_STRING(rc
);
274 buf_init(&b
, p
, len
);
275 EC_OUT(c
, &pp
, ECPT_P(me
));
276 ec_putraw(c
, &b
, &pp
);
278 _PyString_Resize(&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
);
298 p
= PyString_AS_STRING(rc
);
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 _PyString_Resize(&rc
, BLEN(&b
));
311 static PyObject
*epmeth_frombuf(PyObject
*me
, PyObject
*arg
)
319 if (!PyArg_ParseTuple(arg
, "s#:frombuf", &p
, &sz
)) goto end
;
321 if (buf_getec(&b
, &pp
)) VALERR("malformed data");
322 rc
= Py_BuildValue("(NN)", ecpt_pywrapout(me
, &pp
),
323 bytestring_pywrapbuf(&b
));
328 static PyObject
*epmeth_parse(PyObject
*me
, PyObject
*arg
)
335 if (!PyArg_ParseTuple(arg
, "s:parse", &p
)) goto end
;
337 if (!ec_ptparse(&qd
, &pp
)) VALERR(qd
.e
);
338 rc
= Py_BuildValue("(Ns)", ecpt_pywrapout(me
, &pp
), qd
.p
);
343 static PyObject
*epmeth_fromraw(PyObject
*me
, PyObject
*arg
)
352 if (!PyArg_ParseTuple(arg
, "s#:fromraw", &me
, &p
, &len
)) return (0);
353 buf_init(&b
, p
, len
);
355 if (ec_getraw(cc
, &b
, &pp
))
358 rc
= Py_BuildValue("(NN)", ecpt_pywrap(me
, &pp
), bytestring_pywrapbuf(&b
));
363 static PyObject
*epmeth_os2ecp(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
370 unsigned f
= EC_XONLY
| EC_LSB
| EC_SORT
| EC_EXPLY
;
372 static const char *const kwlist
[] = { "buf", "flags", 0 };
374 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|O&:os2ecp", KWLIST
,
375 &p
, &len
, convuint
, &f
))
377 buf_init(&b
, p
, len
);
379 if (ec_os2ecp(cc
, f
, &b
, &pp
)) VALERR("bad point");
381 rc
= Py_BuildValue("(NN)", ecpt_pywrap(me
, &pp
), bytestring_pywrapbuf(&b
));
386 static PyObject
*epncget_ix(PyObject
*me
, void *hunoz
)
390 if (EC_ATINF(ECPT_P(me
))) RETURN_NONE
;
392 rc
= mp_pywrap(MP_COPY(p
.x
));
397 static PyObject
*epncget_iy(PyObject
*me
, void *hunoz
)
401 if (EC_ATINF(ECPT_P(me
))) RETURN_NONE
;
403 rc
= mp_pywrap(MP_COPY(p
.y
));
408 static PyObject
*epncget_point(PyObject
*me
, void *hunoz
)
411 static PyObject
*epget_point(PyObject
*me
, void *hunoz
)
415 return (ecpt_pywrapout(ecpt_pytype
, &p
));
418 static PyObject
*epget_x(PyObject
*me
, void *hunoz
)
420 ec_curve
*c
= ECPT_C(me
);
422 PyObject
*fobj
= ECPT_FOBJ(me
);
426 if (EC_ATINF(pp
)) RETURN_NONE
;
428 rc
= fe_pywrap(fobj
, F_IN(c
->f
, MP_NEW
, p
.x
));
433 static PyObject
*epget_y(PyObject
*me
, void *hunoz
)
435 ec_curve
*c
= ECPT_C(me
);
437 PyObject
*fobj
= ECPT_FOBJ(me
);
441 if (EC_ATINF(pp
)) RETURN_NONE
;
443 rc
= fe_pywrap(fobj
, F_IN(c
->f
, MP_NEW
, p
.y
));
448 static PyObject
*epget__x(PyObject
*me
, void *hunoz
)
450 if (EC_ATINF(ECPT_P(me
))) RETURN_NONE
;
451 return (fe_pywrap(ECPT_FOBJ(me
), MP_COPY(ECPT_P(me
)->x
)));
454 static PyObject
*epget__y(PyObject
*me
, void *hunoz
)
456 if (EC_ATINF(ECPT_P(me
))) RETURN_NONE
;
457 return (fe_pywrap(ECPT_FOBJ(me
), MP_COPY(ECPT_P(me
)->y
)));
460 static PyObject
*epget__z(PyObject
*me
, void *hunoz
)
462 if (EC_ATINF(ECPT_P(me
)) || !ECPT_P(me
)->z
) RETURN_NONE
;
463 return (fe_pywrap(ECPT_FOBJ(me
), MP_COPY(ECPT_P(me
)->z
)));
466 static mp
*coord_in(field
*f
, PyObject
*x
)
469 if (FE_PYCHECK(x
) && FE_F(x
) == f
)
470 return (MP_COPY(FE_X(x
)));
471 else if ((xx
= getmp(x
)) == 0)
474 return (F_IN(f
, xx
, xx
));
477 static int ecptxl_3(ec_curve
*c
, ec
*p
,
478 PyObject
*x
, PyObject
*y
, PyObject
*z
)
482 if (!x
|| !y
|| !z
) TYERR("missing argument");
483 if (!c
) VALERR("internal form with no curve!");
484 if ((p
->x
= coord_in(c
->f
, x
)) == 0 ||
485 (p
->y
= coord_in(c
->f
, y
)) == 0 ||
486 (z
!= Py_None
&& (p
->z
= coord_in(c
->f
, z
)) == 0))
488 if (!p
->z
) p
->z
= MP_COPY(c
->f
->one
); /* just in case */
494 static int ecptxl_2(ec_curve
*c
, ec
*p
, PyObject
*x
, PyObject
*y
)
498 if (!x
|| !y
) TYERR("missing argument");
499 if ((p
->x
= getmp(x
)) == 0 ||
500 (p
->y
= getmp(y
)) == 0)
502 if (c
) EC_IN(c
, p
, p
);
508 static int ecptxl_1(ec_curve
*c
, ec
*p
, PyObject
*x
)
511 PyObject
*y
= 0, *z
= 0, *t
= 0;
518 if (!x
|| x
== Py_None
)
520 else if (ECPT_PYCHECK(x
)) {
523 } else if (PyString_Check(x
)) {
524 if (PyObject_AsReadBuffer(x
, &q
, &n
))
528 if (!ec_ptparse(&qd
, p
))
531 } else if (c
&& (xx
= tomp(x
)) != 0) {
532 xx
= F_IN(c
->f
, xx
, xx
);
533 if (!EC_FIND(c
, p
, xx
)) VALERR("not on the curve");
534 } else if (PySequence_Check(x
)) {
536 n
= PySequence_Size(t
); if (n
< 0) goto end
;
537 if (n
!= 2 && (n
!= 3 || !c
))
538 TYERR("want sequence of two or three items");
539 if ((x
= PySequence_GetItem(t
, 0)) == 0 ||
540 (y
= PySequence_GetItem(t
, 1)) == 0 ||
541 (n
== 3 && (z
= PySequence_GetItem(t
, 2)) == 0))
543 rc
= (n
== 2) ?
ecptxl_2(c
, p
, x
, y
) : ecptxl_3(c
, p
, x
, y
, z
);
546 TYERR("can't convert to curve point");
550 if (c
) EC_IN(c
, p
, p
);
554 Py_XDECREF(x
); Py_XDECREF(y
); Py_XDECREF(z
); Py_XDECREF(t
);
559 static int ecptxl(ec_curve
*c
, ec
*p
, PyObject
*x
, PyObject
*y
, PyObject
*z
)
562 return (ecptxl_3(c
, p
, x
, y
, z
));
564 return (ecptxl_2(c
, p
, x
, y
));
566 return (ecptxl_1(c
, p
, x
));
569 static PyObject
*ecptnc_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
571 PyObject
*x
= 0, *y
= 0, *z
= 0;
573 static const char *const kwlist
[] = { "x", "y", 0 };
575 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|OO:new", KWLIST
, &x
, &y
) ||
576 ecptxl(0, &p
, x
, y
, z
))
578 return (ecpt_pywrapout(ty
, &p
));
580 mp_drop(p
.x
); mp_drop(p
.y
); mp_drop(p
.z
);
584 static PyObject
*ecpt_pyint(PyObject
*me
)
589 if (EC_ATINF(ECPT_P(me
))) VALERR("point at infinity");
591 if (!mp_tolong_checked(p
.x
, &l
, 0)) rc
= PyInt_FromLong(l
);
592 else rc
= mp_topylong(p
.x
);
598 static PyObject
*ecpt_pylong(PyObject
*me
)
602 if (EC_ATINF(ECPT_P(me
))) VALERR("point at infinity");
604 rc
= mp_topylong(p
.x
);
610 static PyObject
*ecpt_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
612 PyObject
*x
= 0, *y
= 0, *z
= 0;
614 static const char *const kwlist
[] = { "x", "y", "z", 0 };
616 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|OOO:new", KWLIST
,
618 ecptxl(ECCURVE_C(ty
), &p
, x
, y
, z
))
620 return (ecpt_pywrap((PyObject
*)ty
, &p
));
622 mp_drop(p
.x
); mp_drop(p
.y
); mp_drop(p
.z
);
626 static const PyGetSetDef ecptnc_pygetset
[] = {
627 #define GETSETNAME(op, name) epnc##op##_##name
628 GET (ix
, "P.ix -> integer x coordinate of P")
629 GET (iy
, "P.iy -> integer y coordinate of P")
630 GET (point
, "P.point -> standalone curve point (no-op)")
635 static const PyMethodDef ecptnc_pymethods
[] = {
636 #define METHNAME(func) epmeth_##func
637 NAMETH(tobuf
, "X.tobuf() -> BIN")
638 CMTH (frombuf
, "frombuf(STR) -> (P, REST)")
639 CMTH (parse
, "parse(STR) -> (P, REST)")
644 static const PyNumberMethods ecpt_pynumber
= {
646 0, /* @nb_subtract@ */
647 0, /* @nb_multiply@ */
649 0, /* @nb_remainder@ */
652 0, /* @nb_negative@ */
653 0, /* @nb_positive@ */
654 0, /* @nb_absolute@ */
655 ecpt_pynonzerop
, /* @nb_nonzero@ */
663 ecpt_pyint
, /* @nb_int@ */
664 ecpt_pylong
, /* @nb_long@ */
669 0, /* @nb_inplace_add@ */
670 0, /* @nb_inplace_subtract@ */
671 0, /* @nb_inplace_multiply@ */
672 0, /* @nb_inplace_divide@ */
673 0, /* @nb_inplace_remainder@ */
674 0, /* @nb_inplace_power@ */
675 0, /* @nb_inplace_lshift@ */
676 0, /* @nb_inplace_rshift@ */
677 0, /* @nb_inplace_and@ */
678 0, /* @nb_inplace_xor@ */
679 0, /* @nb_inplace_or@ */
681 0, /* @nb_floor_divide@ */
682 0, /* @nb_true_divide@ */
683 0, /* @nb_inplace_floor_divide@ */
684 0, /* @nb_inplace_true_divide@ */
687 static const PyTypeObject ecpt_pytype_skel
= {
688 PyObject_HEAD_INIT(0) 0, /* Header */
689 "ECPt", /* @tp_name@ */
690 sizeof(ecpt_pyobj
), /* @tp_basicsize@ */
691 0, /* @tp_itemsize@ */
693 ecpt_pydealloc
, /* @tp_dealloc@ */
695 0, /* @tp_getattr@ */
696 0, /* @tp_setattr@ */
697 0, /* @tp_compare@ */
699 PYNUMBER(ecpt
), /* @tp_as_number@ */
700 0, /* @tp_as_sequence@ */
701 0, /* @tp_as_mapping@ */
702 ecpt_pyhash
, /* @tp_hash@ */
705 0, /* @tp_getattro@ */
706 0, /* @tp_setattro@ */
707 0, /* @tp_as_buffer@ */
708 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
709 Py_TPFLAGS_CHECKTYPES
|
713 "ECPt([X, [Y]]): elliptic curve points, not associated with any curve.\n"
714 " X alone may be None, an existing point, a string 'X, Y', an\n"
715 " x-coordinate, or a pair (X, Y); X and Y should be a coordinate pair.",
717 0, /* @tp_traverse@ */
719 ecpt_pyrichcompare
, /* @tp_richcompare@ */
720 0, /* @tp_weaklistoffset@ */
722 0, /* @tp_iternext@ */
723 PYMETHODS(ecptnc
), /* @tp_methods@ */
724 0, /* @tp_members@ */
725 PYGETSET(ecptnc
), /* @tp_getset@ */
728 0, /* @tp_descr_get@ */
729 0, /* @tp_descr_set@ */
730 0, /* @tp_dictoffset@ */
732 PyType_GenericAlloc
, /* @tp_alloc@ */
733 ecptnc_pynew
, /* @tp_new@ */
738 static const PyMemberDef ecpt_pymembers
[] = {
739 #define MEMBERSTRUCT ecpt_pyobj
740 MEMRNM(curve
, T_OBJECT
, ob_type
, READONLY
,
741 "P.curve -> elliptic curve containing P")
746 static const PyGetSetDef ecpt_pygetset
[] = {
747 #define GETSETNAME(op, name) ep##op##_##name
748 GET (point
, "P.point -> standalone curve point")
749 GET (x
, "P.x -> Cartesian x coordinate of P")
750 GET (y
, "P.y -> Cartesian y coordinate of P")
751 GET (_x
, "P._x -> internal x coordinate of P")
752 GET (_y
, "P._y -> internal y coordinate of P")
753 GET (_z
, "P._z -> internal z coordinate of P, or None")
758 static const PyMethodDef ecpt_pymethods
[] = {
759 #define METHNAME(func) epmeth_##func
760 NAMETH(toraw
, "X.toraw() -> BIN")
761 KWMETH(ec2osp
, "X.ec2osp([flags = EC_EXPLY]) -> BIN")
762 NAMETH(dbl
, "X.dbl() -> X + X")
763 NAMETH(oncurvep
, "X.oncurvep() -> BOOL")
764 CMTH (fromraw
, "fromraw(STR) -> (P, REST)")
765 KWCMTH(os2ecp
, "os2ecp(STR, [flags = ...]) -> (P, REST)")
770 static const PyNumberMethods ecptcurve_pynumber
= {
771 ecpt_pyadd
, /* @nb_add@ */
772 ecpt_pysub
, /* @nb_subtract@ */
773 ecpt_pymul
, /* @nb_multiply@ */
775 0, /* @nb_remainder@ */
778 ecpt_pyneg
, /* @nb_negative@ */
779 ecpt_pyid
, /* @nb_positive@ */
780 0, /* @nb_absolute@ */
781 0, /* @nb_nonzero@ */
795 0, /* @nb_inplace_add@ */
796 0, /* @nb_inplace_subtract@ */
797 0, /* @nb_inplace_multiply@ */
798 0, /* @nb_inplace_divide@ */
799 0, /* @nb_inplace_remainder@ */
800 0, /* @nb_inplace_power@ */
801 0, /* @nb_inplace_lshift@ */
802 0, /* @nb_inplace_rshift@ */
803 0, /* @nb_inplace_and@ */
804 0, /* @nb_inplace_xor@ */
805 0, /* @nb_inplace_or@ */
807 0, /* @nb_floor_divide@ */
808 0, /* @nb_true_divide@ */
809 0, /* @nb_inplace_floor_divide@ */
810 0, /* @nb_inplace_true_divide@ */
813 static const PyTypeObject ecptcurve_pytype_skel
= {
814 PyObject_HEAD_INIT(0) 0, /* Header */
815 "ECPtCurve", /* @tp_name@ */
816 sizeof(ecpt_pyobj
), /* @tp_basicsize@ */
817 0, /* @tp_itemsize@ */
819 ecpt_pydealloc
, /* @tp_dealloc@ */
821 0, /* @tp_getattr@ */
822 0, /* @tp_setattr@ */
823 0, /* @tp_compare@ */
825 PYNUMBER(ecptcurve
), /* @tp_as_number@ */
826 0, /* @tp_as_sequence@ */
827 0, /* @tp_as_mapping@ */
831 0, /* @tp_getattro@ */
832 0, /* @tp_setattro@ */
833 0, /* @tp_as_buffer@ */
834 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
835 Py_TPFLAGS_CHECKTYPES
|
839 "Elliptic curve points; abstract base class for points on given curves.",
841 0, /* @tp_traverse@ */
843 0, /* @tp_richcompare@ */
844 0, /* @tp_weaklistoffset@ */
846 0, /* @tp_iternext@ */
847 PYMETHODS(ecpt
), /* @tp_methods@ */
848 PYMEMBERS(ecpt
), /* @tp_members@ */
849 PYGETSET(ecpt
), /* @tp_getset@ */
852 0, /* @tp_descr_get@ */
853 0, /* @tp_descr_set@ */
854 0, /* @tp_dictoffset@ */
856 PyType_GenericAlloc
, /* @tp_alloc@ */
857 abstract_pynew
, /* @tp_new@ */
862 /*----- Elliptic curves themselves ----------------------------------------*/
864 static PyObject
*eccurve_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
868 assert(ECCURVE_PYCHECK(x
));
869 if (!ECCURVE_PYCHECK(y
)) RETURN_NOTIMPL
;
870 b
= ec_samep(ECCURVE_C(x
), ECCURVE_C(y
));
873 case Py_NE
: b
= !b
; break;
874 default: TYERR("can't order elliptic curves");
881 static PyObject
*ecmmul_id(PyObject
*me
)
882 { ec p
= EC_INIT
; return (ecpt_pywrap(me
, &p
)); }
884 static int ecmmul_fill(void *pp
, PyObject
*me
, PyObject
*x
, PyObject
*m
)
886 ec_mulfactor
*f
= pp
;
889 if (getecpt(ECCURVE_C(me
), &f
->base
, x
) ||
890 (f
->exp
= getmp(m
)) == 0)
895 static PyObject
*ecmmul_exp(PyObject
*me
, void *pp
, int n
)
898 ec_immul(ECCURVE_C(me
), &p
, pp
, n
);
899 return (ecpt_pywrap(me
, &p
));
902 static void ecmmul_drop(void *pp
)
904 ec_mulfactor
*f
= pp
;
905 EC_DESTROY(&f
->base
);
909 static PyObject
*ecmeth_mmul(PyObject
*me
, PyObject
*arg
)
911 return (mexp_common(me
, arg
, sizeof(ec_mulfactor
),
912 ecmmul_id
, ecmmul_fill
, ecmmul_exp
, ecmmul_drop
));
915 static void eccurve_pydealloc(PyObject
*me
)
917 ec_destroycurve(ECCURVE_C(me
));
918 Py_DECREF(ECCURVE_FOBJ(me
));
919 PyType_Type
.tp_dealloc(me
);
922 static PyObject
*ecmeth_find(PyObject
*me
, PyObject
*arg
)
929 if (!PyArg_ParseTuple(arg
, "O:find", &x
)) goto end
;
930 if (FIELD_PYCHECK(x
) && FE_F(x
) == ECCURVE_C(me
)->f
)
931 xx
= MP_COPY(FE_X(x
));
932 else if ((xx
= getmp(x
)) == 0)
935 xx
= F_IN(ECCURVE_C(me
)->f
, xx
, xx
);
936 if (EC_FIND(ECCURVE_C(me
), &p
, xx
) == 0)
937 VALERR("not on the curve");
938 rc
= ecpt_pywrap(me
, &p
);
944 static PyObject
*ecmeth_rand(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
946 static const char *const kwlist
[] = { "rng", 0 };
947 grand
*r
= &rand_global
;
950 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:rand", KWLIST
,
953 ec_rand(ECCURVE_C(me
), &p
, r
);
954 EC_IN(ECCURVE_C(me
), &p
, &p
);
955 return (ecpt_pywrap(me
, &p
));
958 static PyObject
*ecmeth_parse(PyObject
*me
, PyObject
*arg
)
965 if (!PyArg_ParseTuple(arg
, "s:parse", &p
)) goto end
;
967 if ((c
= ec_curveparse(&qd
)) == 0) VALERR(qd
.e
);
968 rc
= eccurve_pywrap(0, c
);
973 static PyObject
*eccurve_dopywrap(PyTypeObject
*ty
,
974 PyObject
*fobj
, ec_curve
*c
)
976 eccurve_pyobj
*cobj
= newtype(ty
, 0, c
->ops
->name
);
979 cobj
->ty
.ht_type
.tp_basicsize
= sizeof(ecpt_pyobj
);
980 cobj
->ty
.ht_type
.tp_base
= ecptcurve_pytype
;
981 Py_INCREF(ecptcurve_pytype
);
982 cobj
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
983 Py_TPFLAGS_BASETYPE
|
984 Py_TPFLAGS_CHECKTYPES
|
985 Py_TPFLAGS_HEAPTYPE
);
986 cobj
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
987 cobj
->ty
.ht_type
.tp_free
= 0;
988 cobj
->ty
.ht_type
.tp_new
= ecpt_pynew
;
989 typeready(&cobj
->ty
.ht_type
);
990 return ((PyObject
*)cobj
);
993 PyObject
*eccurve_pywrap(PyObject
*fobj
, ec_curve
*c
)
998 fobj
= field_pywrap(c
->f
);
1001 assert(FIELD_F(fobj
) == c
->f
);
1002 if (STRCMP(EC_NAME(c
), ==, "prime"))
1003 ty
= ecprimecurve_pytype
;
1004 else if (STRCMP(EC_NAME(c
), ==, "primeproj"))
1005 ty
= ecprimeprojcurve_pytype
;
1006 else if (STRCMP(EC_NAME(c
), ==, "bin"))
1007 ty
= ecbincurve_pytype
;
1008 else if (STRCMP(EC_NAME(c
), ==, "binproj"))
1009 ty
= ecbinprojcurve_pytype
;
1012 return (eccurve_dopywrap(ty
, fobj
, c
));
1015 static PyObject
*eccurve_pynew(PyTypeObject
*ty
,
1016 ec_curve
*(*make
)(field
*, mp
*, mp
*),
1017 PyObject
*arg
, PyObject
*kw
)
1021 static const char *const kwlist
[] = { "field", "a", "b", 0 };
1022 mp
*aa
= 0, *bb
= 0;
1024 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!O&O&", KWLIST
,
1025 field_pytype
, &fobj
,
1026 convmp
, &aa
, convmp
, &bb
))
1029 cobj
= eccurve_dopywrap(ty
, fobj
, make(FIELD_F(fobj
), aa
, bb
));
1031 if (aa
) MP_DROP(aa
);
1032 if (bb
) MP_DROP(bb
);
1036 static PyObject
*ecget_name(PyObject
*me
, void *hunoz
)
1037 { return (PyString_FromString(EC_NAME(ECCURVE_C(me
)))); }
1039 static PyObject
*ecget_a(PyObject
*me
, void *hunoz
)
1040 { return (fe_pywrap(ECCURVE_FOBJ(me
), MP_COPY(ECCURVE_C(me
)->a
))); }
1042 static PyObject
*ecget_b(PyObject
*me
, void *hunoz
)
1043 { return (fe_pywrap(ECCURVE_FOBJ(me
), MP_COPY(ECCURVE_C(me
)->b
))); }
1045 static PyObject
*ecget_field(PyObject
*me
, void *hunoz
)
1046 { RETURN_OBJ(ECCURVE_FOBJ(me
)); }
1048 static PyObject
*ecget_inf(PyObject
*me
, void *hunoz
)
1049 { ec inf
= EC_INIT
; return (ecpt_pywrap(me
, &inf
)); }
1051 static const PyGetSetDef eccurve_pygetset
[] = {
1052 #define GETSETNAME(op, name) ec##op##_##name
1053 GET (name
, "E.name -> name of this kind of curve")
1054 GET (a
, "E.a -> first parameter of curve")
1055 GET (b
, "E.b -> second parameter of curve")
1056 GET (field
, "E.field -> finite field containing this curve")
1057 GET (inf
, "E.inf -> point at infinity of this curve")
1062 static const PyMethodDef eccurve_pymethods
[] = {
1063 #define METHNAME(name) ecmeth_##name
1064 METH (mmul
, "E.mmul([(P0, N0), (P1, N1), ...]) = N0 P0 + N1 P1 + ...")
1065 METH (find
, "E.find(X) -> P")
1066 KWMETH(rand
, "E.rand([rng = rand]) -> P")
1067 SMTH (parse
, "parse(STR) -> (E, REST)")
1072 static const PyTypeObject eccurve_pytype_skel
= {
1073 PyObject_HEAD_INIT(0) 0, /* Header */
1074 "ECCurve", /* @tp_name@ */
1075 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1076 0, /* @tp_itemsize@ */
1078 eccurve_pydealloc
, /* @tp_dealloc@ */
1080 0, /* @tp_getattr@ */
1081 0, /* @tp_setattr@ */
1082 0, /* @tp_compare@ */
1084 0, /* @tp_as_number@ */
1085 0, /* @tp_as_sequence@ */
1086 0, /* @tp_as_mapping@ */
1090 0, /* @tp_getattro@ */
1091 0, /* @tp_setattro@ */
1092 0, /* @tp_as_buffer@ */
1093 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1094 Py_TPFLAGS_BASETYPE
,
1097 "An elliptic curve. Abstract class.",
1099 0, /* @tp_traverse@ */
1101 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1102 0, /* @tp_weaklistoffset@ */
1104 0, /* @tp_iternext@ */
1105 PYMETHODS(eccurve
), /* @tp_methods@ */
1106 0, /* @tp_members@ */
1107 PYGETSET(eccurve
), /* @tp_getset@ */
1110 0, /* @tp_descr_get@ */
1111 0, /* @tp_descr_set@ */
1112 0, /* @tp_dictoffset@ */
1114 PyType_GenericAlloc
, /* @tp_alloc@ */
1115 abstract_pynew
, /* @tp_new@ */
1120 static PyObject
*ecprimecurve_pynew(PyTypeObject
*ty
,
1121 PyObject
*arg
, PyObject
*kw
)
1123 return (eccurve_pynew(ty
, ec_prime
, arg
, kw
));
1126 static const PyTypeObject ecprimecurve_pytype_skel
= {
1127 PyObject_HEAD_INIT(0) 0, /* Header */
1128 "ECPrimeCurve", /* @tp_name@ */
1129 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1130 0, /* @tp_itemsize@ */
1132 eccurve_pydealloc
, /* @tp_dealloc@ */
1134 0, /* @tp_getattr@ */
1135 0, /* @tp_setattr@ */
1136 0, /* @tp_compare@ */
1138 0, /* @tp_as_number@ */
1139 0, /* @tp_as_sequence@ */
1140 0, /* @tp_as_mapping@ */
1144 0, /* @tp_getattro@ */
1145 0, /* @tp_setattro@ */
1146 0, /* @tp_as_buffer@ */
1147 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1148 Py_TPFLAGS_BASETYPE
,
1151 "ECPrimeCurve(FIELD, A, B): an elliptic curve over a prime field.\n"
1152 " Use ECPrimeProjCurve instead.",
1154 0, /* @tp_traverse@ */
1156 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1157 0, /* @tp_weaklistoffset@ */
1159 0, /* @tp_iternext@ */
1160 0, /* @tp_methods@ */
1161 0, /* @tp_members@ */
1162 0, /* @tp_getset@ */
1165 0, /* @tp_descr_get@ */
1166 0, /* @tp_descr_set@ */
1167 0, /* @tp_dictoffset@ */
1169 PyType_GenericAlloc
, /* @tp_alloc@ */
1170 ecprimecurve_pynew
, /* @tp_new@ */
1175 static PyObject
*ecprimeprojcurve_pynew(PyTypeObject
*ty
,
1176 PyObject
*arg
, PyObject
*kw
)
1178 return (eccurve_pynew(ty
, ec_primeproj
, arg
, kw
));
1181 static const PyTypeObject ecprimeprojcurve_pytype_skel
= {
1182 PyObject_HEAD_INIT(0) 0, /* Header */
1183 "ECPrimeProjCurve", /* @tp_name@ */
1184 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1185 0, /* @tp_itemsize@ */
1187 eccurve_pydealloc
, /* @tp_dealloc@ */
1189 0, /* @tp_getattr@ */
1190 0, /* @tp_setattr@ */
1191 0, /* @tp_compare@ */
1193 0, /* @tp_as_number@ */
1194 0, /* @tp_as_sequence@ */
1195 0, /* @tp_as_mapping@ */
1199 0, /* @tp_getattro@ */
1200 0, /* @tp_setattro@ */
1201 0, /* @tp_as_buffer@ */
1202 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1203 Py_TPFLAGS_BASETYPE
,
1206 "ECPrimeProjCurve(FIELD, A, B): an elliptic curve over a prime field\n"
1207 " using projective coordinates.",
1209 0, /* @tp_traverse@ */
1211 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1212 0, /* @tp_weaklistoffset@ */
1214 0, /* @tp_iternext@ */
1215 0, /* @tp_methods@ */
1216 0, /* @tp_members@ */
1217 0, /* @tp_getset@ */
1220 0, /* @tp_descr_get@ */
1221 0, /* @tp_descr_set@ */
1222 0, /* @tp_dictoffset@ */
1224 PyType_GenericAlloc
, /* @tp_alloc@ */
1225 ecprimeprojcurve_pynew
, /* @tp_new@ */
1230 static PyObject
*ecbincurve_pynew(PyTypeObject
*ty
,
1231 PyObject
*arg
, PyObject
*kw
)
1233 return (eccurve_pynew(ty
, ec_bin
, arg
, kw
));
1236 static const PyTypeObject ecbincurve_pytype_skel
= {
1237 PyObject_HEAD_INIT(0) 0, /* Header */
1238 "ECBinCurve", /* @tp_name@ */
1239 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1240 0, /* @tp_itemsize@ */
1242 eccurve_pydealloc
, /* @tp_dealloc@ */
1244 0, /* @tp_getattr@ */
1245 0, /* @tp_setattr@ */
1246 0, /* @tp_compare@ */
1248 0, /* @tp_as_number@ */
1249 0, /* @tp_as_sequence@ */
1250 0, /* @tp_as_mapping@ */
1254 0, /* @tp_getattro@ */
1255 0, /* @tp_setattro@ */
1256 0, /* @tp_as_buffer@ */
1257 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1258 Py_TPFLAGS_BASETYPE
,
1261 "ECBinCurve(FIELD, A, B): an elliptic curve over a binary field.\n"
1262 " Use ECBinProjCurve instead.",
1264 0, /* @tp_traverse@ */
1266 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1267 0, /* @tp_weaklistoffset@ */
1269 0, /* @tp_iternext@ */
1270 0, /* @tp_methods@ */
1271 0, /* @tp_members@ */
1272 0, /* @tp_getset@ */
1275 0, /* @tp_descr_get@ */
1276 0, /* @tp_descr_set@ */
1277 0, /* @tp_dictoffset@ */
1279 PyType_GenericAlloc
, /* @tp_alloc@ */
1280 ecbincurve_pynew
, /* @tp_new@ */
1285 static PyObject
*ecbinprojcurve_pynew(PyTypeObject
*ty
,
1286 PyObject
*arg
, PyObject
*kw
)
1288 return (eccurve_pynew(ty
, ec_binproj
, arg
, kw
));
1291 static const PyTypeObject ecbinprojcurve_pytype_skel
= {
1292 PyObject_HEAD_INIT(0) 0, /* Header */
1293 "ECBinProjCurve", /* @tp_name@ */
1294 sizeof(eccurve_pyobj
), /* @tp_basicsize@ */
1295 0, /* @tp_itemsize@ */
1297 eccurve_pydealloc
, /* @tp_dealloc@ */
1299 0, /* @tp_getattr@ */
1300 0, /* @tp_setattr@ */
1301 0, /* @tp_compare@ */
1303 0, /* @tp_as_number@ */
1304 0, /* @tp_as_sequence@ */
1305 0, /* @tp_as_mapping@ */
1309 0, /* @tp_getattro@ */
1310 0, /* @tp_setattro@ */
1311 0, /* @tp_as_buffer@ */
1312 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1313 Py_TPFLAGS_BASETYPE
,
1316 "ECBinProjCurve(FIELD, A, B): an elliptic curve over a binary field,\n"
1317 " using projective coordinates.",
1319 0, /* @tp_traverse@ */
1321 eccurve_pyrichcompare
, /* @tp_richcompare@ */
1322 0, /* @tp_weaklistoffset@ */
1324 0, /* @tp_iternext@ */
1325 0, /* @tp_methods@ */
1326 0, /* @tp_members@ */
1327 0, /* @tp_getset@ */
1330 0, /* @tp_descr_get@ */
1331 0, /* @tp_descr_set@ */
1332 0, /* @tp_dictoffset@ */
1334 PyType_GenericAlloc
, /* @tp_alloc@ */
1335 ecbinprojcurve_pynew
, /* @tp_new@ */
1340 /*----- Curve info --------------------------------------------------------*/
1342 void ecinfo_copy(ec_info
*eic
, const ec_info
*ei
)
1344 eic
->c
= eccurve_copy(ei
->c
);
1346 EC_COPY(&eic
->g
, &ei
->g
);
1347 eic
->r
= MP_COPY(ei
->r
);
1348 eic
->h
= MP_COPY(ei
->h
);
1351 PyObject
*ecinfo_pywrap(ec_info
*ei
)
1355 o
= PyObject_NEW(ecinfo_pyobj
, ecinfo_pytype
);
1357 o
->cobj
= eccurve_pywrap(0, o
->ei
.c
);
1359 return ((PyObject
*)o
);
1362 static void ecinfo_pydealloc(PyObject
*me
)
1364 ec_info
*ei
= ECINFO_EI(me
);
1368 Py_DECREF(ECINFO_COBJ(me
));
1372 static PyObject
*ecinfo_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
1376 static const char *const kwlist
[] = { "curve", "G", "r", "h", 0 };
1377 ecinfo_pyobj
*rc
= 0;
1379 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!O!O&O&:new", KWLIST
,
1380 eccurve_pytype
, &e
, ecpt_pytype
, &g
,
1381 convmp
, &ei
.r
, convmp
, &ei
.h
))
1383 if (ECPT_C(g
) != ECCURVE_C(e
) && !ec_samep(ECPT_C(g
), ECCURVE_C(e
)))
1384 TYERR("point not from this curve");
1385 ei
.c
= ECCURVE_C(e
);
1387 EC_OUT(ei
.c
, &ei
.g
, ECPT_P(g
));
1388 rc
= (ecinfo_pyobj
*)ty
->tp_alloc(ty
, 0);
1391 Py_INCREF(rc
->cobj
);
1392 return ((PyObject
*)rc
);
1400 static PyObject
*eimeth_parse(PyObject
*me
, PyObject
*arg
)
1407 if (!PyArg_ParseTuple(arg
, "s:parse", &p
)) goto end
;
1409 if (ec_infoparse(&qd
, &ei
)) VALERR(qd
.e
);
1410 rc
= Py_BuildValue("(Ns)", ecinfo_pywrap(&ei
), qd
.p
);
1415 static PyObject
*ecinfo_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
1417 int b
= ec_sameinfop(ECINFO_EI(x
), ECINFO_EI(y
));
1421 default: TYERR("can't order elliptic curve infos");
1423 return (getbool(b
));
1428 static PyObject
*eimeth_check(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1430 static const char *const kwlist
[] = { "rng", 0 };
1431 grand
*r
= &rand_global
;
1434 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:check", KWLIST
,
1437 if ((p
= ec_checkinfo(ECINFO_EI(me
), r
)) != 0)
1444 static PyObject
*eiget_curve(PyObject
*me
, void *hunoz
)
1445 { RETURN_OBJ(ECINFO_COBJ(me
)); }
1447 static PyObject
*eiget_G(PyObject
*me
, void *hunoz
)
1449 ec_info
*ei
= ECINFO_EI(me
);
1451 EC_IN(ei
->c
, &p
, &ei
->g
);
1452 return (ecpt_pywrap(ECINFO_COBJ(me
), &p
));
1455 static PyObject
*eiget_r(PyObject
*me
, void *hunoz
)
1456 { return (mp_pywrap(MP_COPY(ECINFO_EI(me
)->r
))); }
1458 static PyObject
*eiget_h(PyObject
*me
, void *hunoz
)
1459 { return (mp_pywrap(MP_COPY(ECINFO_EI(me
)->h
))); }
1461 static const PyGetSetDef ecinfo_pygetset
[] = {
1462 #define GETSETNAME(op, name) ei##op##_##name
1463 GET (curve
, "I.curve -> the elliptic curve")
1464 GET (G
, "I.G -> generator point for the group")
1465 GET (r
, "I.r -> order of the group (and hence of G")
1466 GET (h
, "I.h -> cofactor of the group")
1471 static const PyMethodDef ecinfo_pymethods
[] = {
1472 #define METHNAME(name) eimeth_##name
1473 KWMETH(check
, "I.check([rng = rand]) -> None")
1474 SMTH (parse
, "parse(STR) -> (I, REST)")
1479 static const PyTypeObject ecinfo_pytype_skel
= {
1480 PyObject_HEAD_INIT(0) 0, /* Header */
1481 "ECInfo", /* @tp_name@ */
1482 sizeof(ecinfo_pyobj
), /* @tp_basicsize@ */
1483 0, /* @tp_itemsize@ */
1485 ecinfo_pydealloc
, /* @tp_dealloc@ */
1487 0, /* @tp_getattr@ */
1488 0, /* @tp_setattr@ */
1489 0, /* @tp_compare@ */
1491 0, /* @tp_as_number@ */
1492 0, /* @tp_as_sequence@ */
1493 0, /* @tp_as_mapping@ */
1497 0, /* @tp_getattro@ */
1498 0, /* @tp_setattro@ */
1499 0, /* @tp_as_buffer@ */
1500 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1501 Py_TPFLAGS_BASETYPE
,
1504 "ECInfo(CURVE, G, R, H): elliptic curve domain parameters.",
1506 0, /* @tp_traverse@ */
1508 ecinfo_pyrichcompare
, /* @tp_richcompare@ */
1509 0, /* @tp_weaklistoffset@ */
1511 0, /* @tp_iternext@ */
1512 PYMETHODS(ecinfo
), /* @tp_methods@ */
1513 0, /* @tp_members@ */
1514 PYGETSET(ecinfo
), /* @tp_getset@ */
1517 0, /* @tp_descr_get@ */
1518 0, /* @tp_descr_set@ */
1519 0, /* @tp_dictoffset@ */
1521 PyType_GenericAlloc
, /* @tp_alloc@ */
1522 ecinfo_pynew
, /* @tp_new@ */
1527 /*----- Setup -------------------------------------------------------------*/
1529 static const struct nameval consts
[] = {
1530 CONST(EC_XONLY
), CONST(EC_YBIT
), CONST(EC_LSB
),
1531 CONST(EC_CMPR
), CONST(EC_EXPLY
), CONST(EC_SORT
),
1535 void ec_pyinit(void)
1537 INITTYPE(ecpt
, root
);
1538 INITTYPE(ecptcurve
, ecpt
);
1539 INITTYPE(eccurve
, type
);
1540 INITTYPE(ecprimecurve
, eccurve
);
1541 INITTYPE(ecprimeprojcurve
, ecprimecurve
);
1542 INITTYPE(ecbincurve
, eccurve
);
1543 INITTYPE(ecbinprojcurve
, ecbincurve
);
1544 INITTYPE(ecinfo
, root
);
1547 static const char *ec_namefn(const void *p
)
1548 { const ecentry
*ec
= p
; return (ec
->name
); }
1550 static int ec_ixfn(const void *p
)
1552 const ecentry
*ec
= p
;
1555 for (i
= 0; ectab
[i
].name
; i
++)
1556 if (ectab
[i
].data
== ec
->data
) return (i
);
1560 static PyObject
*ec_valfn(int i
)
1564 ec_infofromdata(&ei
, ectab
[i
].data
);
1565 return (ecinfo_pywrap(&ei
));
1568 void ec_pyinsert(PyObject
*mod
)
1570 INSERT("ECPt", ecpt_pytype
);
1571 INSERT("ECPtCurve", ecptcurve_pytype
);
1572 INSERT("ECCurve", eccurve_pytype
);
1573 INSERT("ECPrimeCurve", ecprimecurve_pytype
);
1574 INSERT("ECPrimeProjCurve", ecprimeprojcurve_pytype
);
1575 INSERT("ECBinCurve", ecbincurve_pytype
);
1576 INSERT("ECBinProjCurve", ecbinprojcurve_pytype
);
1577 INSERT("ECInfo", ecinfo_pytype
);
1578 INSERT("eccurves", make_grouptab(ectab
, sizeof(*ectab
),
1579 ec_namefn
, ec_ixfn
, ec_valfn
));
1580 setconstants(mod
, consts
);
1583 /*----- That's all, folks -------------------------------------------------*/