3 * Symmetric cryptography
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"
30 #include "algorithms.h"
32 /*----- Key sizes ---------------------------------------------------------*/
34 PyTypeObject
*keysz_pytype
;
35 PyTypeObject
*keyszany_pytype
, *keyszrange_pytype
, *keyszset_pytype
;
36 PyObject
*sha_pyobj
, *has160_pyobj
;
38 PyObject
*keysz_pywrap(const octet
*k
)
42 keysz_pyobj
*o
= PyObject_New(keysz_pyobj
, keyszany_pytype
);
44 return ((PyObject
*)o
);
48 PyObject_New(keyszrange_pyobj
, keyszrange_pytype
);
53 if (!o
->mod
) o
->mod
= 1;
54 return ((PyObject
*)o
);
58 PyObject_New(keyszset_pyobj
, keyszset_pytype
);
61 for (i
= 0; k
[i
+ 1]; i
++) ;
62 n
= i
; o
->set
= PyTuple_New(n
);
63 for (i
= 0; i
< n
; i
++)
64 PyTuple_SET_ITEM(o
->set
, i
, PyInt_FromLong(k
[i
+ 1]));
65 return ((PyObject
*)o
);
72 static PyObject
*keyszany_pynew(PyTypeObject
*ty
,
73 PyObject
*arg
, PyObject
*kw
)
75 char *kwlist
[] = { "default", 0 };
79 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i:new", kwlist
, &dfl
))
81 if (dfl
< 0) VALERR("key size cannot be negative");
82 o
= (keysz_pyobj
*)ty
->tp_alloc(ty
, 0);
84 return ((PyObject
*)o
);
89 static PyObject
*keyszrange_pynew(PyTypeObject
*ty
,
90 PyObject
*arg
, PyObject
*kw
)
92 char *kwlist
[] = { "default", "min", "max", "mod", 0 };
93 int dfl
, min
= 0, max
= 0, mod
= 1;
96 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i|iii:new", kwlist
,
97 &dfl
, &min
, &max
, &mod
))
99 if (dfl
< 0 || min
< 0 || max
< 0)
100 VALERR("key size cannot be negative");
101 if (min
> dfl
|| (max
&& dfl
> max
))
102 VALERR("bad key size bounds");
103 if (mod
<= 0 || dfl
% mod
|| min
% mod
|| max
% mod
)
104 VALERR("bad key size modulus");
105 o
= (keyszrange_pyobj
*)ty
->tp_alloc(ty
, 0);
110 return ((PyObject
*)o
);
115 static PyObject
*keyszset_pynew(PyTypeObject
*ty
,
116 PyObject
*arg
, PyObject
*kw
)
118 char *kwlist
[] = { "default", "set", 0 };
121 PyObject
*x
= 0, *l
= 0;
122 keyszset_pyobj
*o
= 0;
124 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i|O:new", kwlist
,
127 if (!set
) set
= PyTuple_New(0);
129 if (!PySequence_Check(set
)) TYERR("want a sequence");
130 n
= PySequence_Size(set
);
132 if (PyErr_Occurred()) goto end
;
133 if (dfl
< 0) VALERR("key size cannot be negative");
134 x
= PyInt_FromLong(dfl
);
138 for (i
= 0; i
< n
; i
++) {
139 if ((x
= PySequence_GetItem(set
, i
)) == 0) goto end
;
140 xx
= PyInt_AsLong(x
);
141 if (PyErr_Occurred()) goto end
;
142 if (xx
== dfl
) continue;
143 if (xx
< 0) VALERR("key size cannot be negative");
149 if ((set
= PySequence_Tuple(l
)) == 0) goto end
;
150 o
= (keyszset_pyobj
*)ty
->tp_alloc(ty
, 0);
158 return ((PyObject
*)o
);
161 static PyObject
*kaget_min(PyObject
*me
, void *hunoz
)
162 { return (PyInt_FromLong(0)); }
163 #define kaget_max kaget_min
165 static PyObject
*ksget_min(PyObject
*me
, void *hunoz
)
167 PyObject
*set
= ((keyszset_pyobj
*)me
)->set
;
169 n
= PyTuple_Size(set
);
170 for (i
= 0; i
< n
; i
++) {
171 y
= PyInt_AsLong(PyTuple_GetItem(set
, i
));
172 if (x
== -1 || y
< x
) x
= y
;
174 return (PyInt_FromLong(x
));
177 static PyObject
*ksget_max(PyObject
*me
, void *hunoz
)
179 PyObject
*set
= ((keyszset_pyobj
*)me
)->set
;
181 n
= PyTuple_Size(set
);
182 for (i
= 0; i
< n
; i
++) {
183 y
= PyInt_AsLong(PyTuple_GetItem(set
, i
));
186 return (PyInt_FromLong(x
));
189 static PyMemberDef keysz_pymembers
[] = {
190 #define MEMBERSTRUCT keysz_pyobj
191 #define default dfl /* ugh! */
192 MEMBER(default, T_INT
, READONLY
, "KSZ.default -> default key size")
198 static PyGetSetDef keyszany_pygetset
[] = {
199 #define GETSETNAME(op, name) ka##op##_##name
200 GET (min
, "KSZ.min -> smallest allowed key size")
201 GET (max
, "KSZ.min -> largest allowed key size")
206 static PyMemberDef keyszrange_pymembers
[] = {
207 #define MEMBERSTRUCT keyszrange_pyobj
208 MEMBER(min
, T_INT
, READONLY
, "KSZ.min -> smallest allowed key size")
209 MEMBER(max
, T_INT
, READONLY
, "KSZ.min -> largest allowed key size")
210 MEMBER(mod
, T_INT
, READONLY
,
211 "KSZ.mod -> key size must be a multiple of this")
216 static PyGetSetDef keyszset_pygetset
[] = {
217 #define GETSETNAME(op, name) ks##op##_##name
218 GET (min
, "KSZ.min -> smallest allowed key size")
219 GET (max
, "KSZ.min -> largest allowed key size")
224 static PyMemberDef keyszset_pymembers
[] = {
225 #define MEMBERSTRUCT keyszset_pyobj
226 MEMBER(set
, T_OBJECT
, READONLY
, "KSZ.set -> allowed key sizes")
231 static PyTypeObject keysz_pytype_skel
= {
232 PyObject_HEAD_INIT(0) 0, /* Header */
233 "KeySZ", /* @tp_name@ */
234 sizeof(keysz_pyobj
), /* @tp_basicsize@ */
235 0, /* @tp_itemsize@ */
237 0, /* @tp_dealloc@ */
239 0, /* @tp_getattr@ */
240 0, /* @tp_setattr@ */
241 0, /* @tp_compare@ */
243 0, /* @tp_as_number@ */
244 0, /* @tp_as_sequence@ */
245 0, /* @tp_as_mapping@ */
249 0, /* @tp_getattro@ */
250 0, /* @tp_setattro@ */
251 0, /* @tp_as_buffer@ */
252 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
256 "Key size constraints.",
258 0, /* @tp_traverse@ */
260 0, /* @tp_richcompare@ */
261 0, /* @tp_weaklistoffset@ */
263 0, /* @tp_iternext@ */
264 0, /* @tp_methods@ */
265 keysz_pymembers
, /* @tp_members@ */
269 0, /* @tp_descr_get@ */
270 0, /* @tp_descr_set@ */
271 0, /* @tp_dictoffset@ */
273 PyType_GenericAlloc
, /* @tp_alloc@ */
274 abstract_pynew
, /* @tp_new@ */
279 static PyTypeObject keyszany_pytype_skel
= {
280 PyObject_HEAD_INIT(0) 0, /* Header */
281 "KeySZAny", /* @tp_name@ */
282 sizeof(keysz_pyobj
), /* @tp_basicsize@ */
283 0, /* @tp_itemsize@ */
285 0, /* @tp_dealloc@ */
287 0, /* @tp_getattr@ */
288 0, /* @tp_setattr@ */
289 0, /* @tp_compare@ */
291 0, /* @tp_as_number@ */
292 0, /* @tp_as_sequence@ */
293 0, /* @tp_as_mapping@ */
297 0, /* @tp_getattro@ */
298 0, /* @tp_setattro@ */
299 0, /* @tp_as_buffer@ */
300 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
304 "Key size constraints. This object imposes no constraints on size.",
306 0, /* @tp_traverse@ */
308 0, /* @tp_richcompare@ */
309 0, /* @tp_weaklistoffset@ */
311 0, /* @tp_iternext@ */
312 0, /* @tp_methods@ */
313 0, /* @tp_members@ */
314 keyszany_pygetset
, /* @tp_getset@ */
317 0, /* @tp_descr_get@ */
318 0, /* @tp_descr_set@ */
319 0, /* @tp_dictoffset@ */
321 PyType_GenericAlloc
, /* @tp_alloc@ */
322 keyszany_pynew
, /* @tp_new@ */
327 static PyTypeObject keyszrange_pytype_skel
= {
328 PyObject_HEAD_INIT(0) 0, /* Header */
329 "KeySZRange", /* @tp_name@ */
330 sizeof(keyszrange_pyobj
), /* @tp_basicsize@ */
331 0, /* @tp_itemsize@ */
333 0, /* @tp_dealloc@ */
335 0, /* @tp_getattr@ */
336 0, /* @tp_setattr@ */
337 0, /* @tp_compare@ */
339 0, /* @tp_as_number@ */
340 0, /* @tp_as_sequence@ */
341 0, /* @tp_as_mapping@ */
345 0, /* @tp_getattro@ */
346 0, /* @tp_setattro@ */
347 0, /* @tp_as_buffer@ */
348 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
352 "Key size constraints. This object asserts minimum and maximum (if\n\
353 sizes, and requires the key length to be a multiple of some value.",
355 0, /* @tp_traverse@ */
357 0, /* @tp_richcompare@ */
358 0, /* @tp_weaklistoffset@ */
360 0, /* @tp_iternext@ */
361 0, /* @tp_methods@ */
362 keyszrange_pymembers
, /* @tp_members@ */
366 0, /* @tp_descr_get@ */
367 0, /* @tp_descr_set@ */
368 0, /* @tp_dictoffset@ */
370 PyType_GenericAlloc
, /* @tp_alloc@ */
371 keyszrange_pynew
, /* @tp_new@ */
376 static PyTypeObject keyszset_pytype_skel
= {
377 PyObject_HEAD_INIT(0) 0, /* Header */
378 "KeySZSet", /* @tp_name@ */
379 sizeof(keyszset_pyobj
), /* @tp_basicsize@ */
380 0, /* @tp_itemsize@ */
382 0, /* @tp_dealloc@ */
384 0, /* @tp_getattr@ */
385 0, /* @tp_setattr@ */
386 0, /* @tp_compare@ */
388 0, /* @tp_as_number@ */
389 0, /* @tp_as_sequence@ */
390 0, /* @tp_as_mapping@ */
394 0, /* @tp_getattro@ */
395 0, /* @tp_setattro@ */
396 0, /* @tp_as_buffer@ */
397 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
401 "Key size constraints. This object requires the key to be one of a\n\
404 0, /* @tp_traverse@ */
406 0, /* @tp_richcompare@ */
407 0, /* @tp_weaklistoffset@ */
409 0, /* @tp_iternext@ */
410 0, /* @tp_methods@ */
411 keyszset_pymembers
, /* @tp_members@ */
412 keyszset_pygetset
, /* @tp_getset@ */
415 0, /* @tp_descr_get@ */
416 0, /* @tp_descr_set@ */
417 0, /* @tp_dictoffset@ */
419 PyType_GenericAlloc
, /* @tp_alloc@ */
420 keyszset_pynew
, /* @tp_new@ */
425 #define KSZCONVOP(op) \
426 static PyObject *meth__KeySZ_##op(PyObject *me, PyObject *arg) \
429 if (!PyArg_ParseTuple(arg, "Od:" #op, &me, &x)) return (0); \
431 return (PyFloat_FromDouble(y)); \
434 KSZCONVOP(fromschnorr
)
443 /*----- Symmetric encryption ----------------------------------------------*/
445 PyTypeObject
*gccipher_pytype
, *gcipher_pytype
;
447 CONVFUNC(gccipher
, gccipher
*, GCCIPHER_CC
)
448 CONVFUNC(gcipher
, gcipher
*, GCIPHER_C
)
450 PyObject
*gcipher_pywrap(PyObject
*cobj
, gcipher
*c
, unsigned f
)
453 if (!cobj
) cobj
= gccipher_pywrap((/*unconst*/ gccipher
*)GC_CLASS(c
));
454 else Py_INCREF(cobj
);
455 g
= PyObject_NEW(gcipher_pyobj
, (PyTypeObject
*)cobj
);
458 return ((PyObject
*)g
);
461 static PyObject
*gcipher_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
463 char *kwlist
[] = { "k", 0 };
467 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", kwlist
, &k
, &sz
))
469 if (keysz(sz
, GCCIPHER_CC(ty
)->keysz
) != sz
) VALERR("bad key length");
470 return (gcipher_pywrap((PyObject
*)ty
,
471 GC_INIT(GCCIPHER_CC(ty
), k
, sz
),
477 PyObject
*gccipher_pywrap(gccipher
*cc
)
479 gccipher_pyobj
*g
= newtype(gccipher_pytype
, 0, cc
->name
);
481 g
->ty
.ht_type
.tp_basicsize
= sizeof(gcipher_pyobj
);
482 g
->ty
.ht_type
.tp_base
= gcipher_pytype
;
483 Py_INCREF(gcipher_pytype
);
484 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
485 Py_TPFLAGS_BASETYPE
|
486 Py_TPFLAGS_HEAPTYPE
);
487 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
488 g
->ty
.ht_type
.tp_free
= 0;
489 g
->ty
.ht_type
.tp_new
= gcipher_pynew
;
490 typeready(&g
->ty
.ht_type
);
491 return ((PyObject
*)g
);
494 static void gcipher_pydealloc(PyObject
*me
)
496 if (GCIPHER_F(me
) & f_freeme
)
497 GC_DESTROY(GCIPHER_C(me
));
498 Py_DECREF(me
->ob_type
);
502 static PyObject
*gccget_name(PyObject
*me
, void *hunoz
)
503 { return (PyString_FromString(GCCIPHER_CC(me
)->name
)); }
505 static PyObject
*gccget_keysz(PyObject
*me
, void *hunoz
)
506 { return (keysz_pywrap(GCCIPHER_CC(me
)->keysz
)); }
508 static PyObject
*gccget_blksz(PyObject
*me
, void *hunoz
)
509 { return (PyInt_FromLong(GCCIPHER_CC(me
)->blksz
)); }
511 static PyObject
*gcmeth_encrypt(PyObject
*me
, PyObject
*arg
)
517 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &p
, &sz
)) return (0);
518 rc
= bytestring_pywrap(0, sz
);
519 GC_ENCRYPT(GCIPHER_C(me
), p
, PyString_AS_STRING(rc
), sz
);
523 static PyObject
*gcmeth_enczero(PyObject
*me
, PyObject
*arg
)
529 if (!PyArg_ParseTuple(arg
, "i:enczero", &sz
)) return (0);
530 rc
= bytestring_pywrap(0, sz
);
531 p
= PyString_AS_STRING(rc
);
533 GC_ENCRYPT(GCIPHER_C(me
), p
, p
, sz
);
537 static PyObject
*gcmeth_decrypt(PyObject
*me
, PyObject
*arg
)
543 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &p
, &sz
)) return (0);
544 rc
= bytestring_pywrap(0, sz
);
545 GC_DECRYPT(GCIPHER_C(me
), p
, PyString_AS_STRING(rc
), sz
);
549 static PyObject
*gcmeth_deczero(PyObject
*me
, PyObject
*arg
)
555 if (!PyArg_ParseTuple(arg
, "i:deczero", &sz
)) return (0);
556 rc
= bytestring_pywrap(0, sz
);
557 p
= PyString_AS_STRING(rc
);
559 GC_DECRYPT(GCIPHER_C(me
), p
, p
, sz
);
563 static PyObject
*gcmeth_setiv(PyObject
*me
, PyObject
*arg
)
568 if (!PyArg_ParseTuple(arg
, "s#:setiv", &p
, &sz
)) goto end
;
569 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
570 if (sz
!= GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("bad IV length");
571 GC_SETIV(GCIPHER_C(me
), p
);
577 static PyObject
*gcmeth_bdry(PyObject
*me
, PyObject
*arg
)
579 if (!PyArg_ParseTuple(arg
, ":bdry")) goto end
;
580 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
581 GC_BDRY(GCIPHER_C(me
));
587 static PyGetSetDef gccipher_pygetset
[] = {
588 #define GETSETNAME(op, name) gcc##op##_##name
589 GET (keysz
, "CC.keysz -> acceptable key sizes")
590 GET (blksz
, "CC.blksz -> block size, or zero")
591 GET (name
, "CC.name -> name of this kind of cipher")
596 static PyMethodDef gcipher_pymethods
[] = {
597 #define METHNAME(name) gcmeth_##name
598 METH (encrypt
, "C.encrypt(PT) -> CT")
599 METH (enczero
, "C.enczero(N) -> CT")
600 METH (decrypt
, "C.decrypt(CT) -> PT")
601 METH (deczero
, "C.deczero(N) -> PT")
602 METH (setiv
, "C.setiv(IV)")
603 METH (bdry
, "C.bdry()")
608 static PyTypeObject gccipher_pytype_skel
= {
609 PyObject_HEAD_INIT(0) 0, /* Header */
610 "GCCipher", /* @tp_name@ */
611 sizeof(gccipher_pyobj
), /* @tp_basicsize@ */
612 0, /* @tp_itemsize@ */
614 0, /* @tp_dealloc@ */
616 0, /* @tp_getattr@ */
617 0, /* @tp_setattr@ */
618 0, /* @tp_compare@ */
620 0, /* @tp_as_number@ */
621 0, /* @tp_as_sequence@ */
622 0, /* @tp_as_mapping@ */
626 0, /* @tp_getattro@ */
627 0, /* @tp_setattro@ */
628 0, /* @tp_as_buffer@ */
629 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
633 "Symmetric cipher metaclass.",
635 0, /* @tp_traverse@ */
637 0, /* @tp_richcompare@ */
638 0, /* @tp_weaklistoffset@ */
640 0, /* @tp_iternext@ */
641 0, /* @tp_methods@ */
642 0, /* @tp_members@ */
643 gccipher_pygetset
, /* @tp_getset@ */
646 0, /* @tp_descr_get@ */
647 0, /* @tp_descr_set@ */
648 0, /* @tp_dictoffset@ */
650 PyType_GenericAlloc
, /* @tp_alloc@ */
651 abstract_pynew
, /* @tp_new@ */
656 static PyTypeObject gcipher_pytype_skel
= {
657 PyObject_HEAD_INIT(0) 0, /* Header */
658 "GCipher", /* @tp_name@ */
659 sizeof(gcipher_pyobj
), /* @tp_basicsize@ */
660 0, /* @tp_itemsize@ */
662 gcipher_pydealloc
, /* @tp_dealloc@ */
664 0, /* @tp_getattr@ */
665 0, /* @tp_setattr@ */
666 0, /* @tp_compare@ */
668 0, /* @tp_as_number@ */
669 0, /* @tp_as_sequence@ */
670 0, /* @tp_as_mapping@ */
674 0, /* @tp_getattro@ */
675 0, /* @tp_setattro@ */
676 0, /* @tp_as_buffer@ */
677 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
681 "Symmetric cipher, abstract base class.",
683 0, /* @tp_traverse@ */
685 0, /* @tp_richcompare@ */
686 0, /* @tp_weaklistoffset@ */
688 0, /* @tp_iternext@ */
689 gcipher_pymethods
, /* @tp_methods@ */
690 0, /* @tp_members@ */
694 0, /* @tp_descr_get@ */
695 0, /* @tp_descr_set@ */
696 0, /* @tp_dictoffset@ */
698 PyType_GenericAlloc
, /* @tp_alloc@ */
699 abstract_pynew
, /* @tp_new@ */
704 /*----- Hash functions ----------------------------------------------------*/
706 PyTypeObject
*gchash_pytype
, *ghash_pytype
;
708 CONVFUNC(gchash
, gchash
*, GCHASH_CH
)
709 CONVFUNC(ghash
, ghash
*, GHASH_H
)
711 static PyObject
*ghash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
713 char *kwlist
[] = { 0 };
714 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", kwlist
))
716 return (ghash_pywrap((PyObject
*)ty
, GH_INIT(GCHASH_CH(ty
)), f_freeme
));
721 PyObject
*gchash_pywrap(gchash
*ch
)
723 gchash_pyobj
*g
= newtype(gchash_pytype
, 0, ch
->name
);
725 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
726 g
->ty
.ht_type
.tp_base
= ghash_pytype
;
727 Py_INCREF(ghash_pytype
);
728 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
729 Py_TPFLAGS_BASETYPE
|
730 Py_TPFLAGS_HEAPTYPE
);
731 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
732 g
->ty
.ht_type
.tp_free
= 0;
733 g
->ty
.ht_type
.tp_new
= ghash_pynew
;
734 typeready(&g
->ty
.ht_type
);
735 return ((PyObject
*)g
);
738 PyObject
*ghash_pywrap(PyObject
*cobj
, ghash
*h
, unsigned f
)
741 if (!cobj
) cobj
= gchash_pywrap((/*unconst*/ gchash
*)GH_CLASS(h
));
742 else Py_INCREF(cobj
);
743 g
= PyObject_NEW(ghash_pyobj
, (PyTypeObject
*)cobj
);
746 return ((PyObject
*)g
);
749 static void ghash_pydealloc(PyObject
*me
)
751 if (GHASH_F(me
) & f_freeme
)
752 GH_DESTROY(GHASH_H(me
));
753 Py_DECREF(me
->ob_type
);
757 static PyObject
*gchget_name(PyObject
*me
, void *hunoz
)
758 { return (PyString_FromString(GCHASH_CH(me
)->name
)); }
760 static PyObject
*gchget_hashsz(PyObject
*me
, void *hunoz
)
761 { return (PyInt_FromLong(GCHASH_CH(me
)->hashsz
)); }
763 static PyObject
*gchget_bufsz(PyObject
*me
, void *hunoz
)
764 { return (PyInt_FromLong(GCHASH_CH(me
)->bufsz
)); }
766 static PyObject
*ghmeth_hash(PyObject
*me
, PyObject
*arg
)
770 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
771 GH_HASH(GHASH_H(me
), p
, sz
);
775 #define GHMETH_HASHU_(n, W, w) \
776 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
779 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
780 GH_HASHU##W(GHASH_H(me), x); \
785 DOUINTCONV(GHMETH_HASHU_
)
787 #define GHMETH_HASHBUF_(n, W, w) \
788 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
792 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
793 if (sz > MASK##n) TYERR("string too long"); \
794 GH_HASHBUF##W(GHASH_H(me), p, sz); \
799 DOUINTCONV(GHMETH_HASHBUF_
)
801 static PyObject
*ghmeth_hashstrz(PyObject
*me
, PyObject
*arg
)
804 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
805 GH_HASHSTRZ(GHASH_H(me
), p
);
809 static PyObject
*ghmeth_done(PyObject
*me
, PyObject
*arg
)
813 if (!PyArg_ParseTuple(arg
, ":done")) return (0);
814 g
= GH_COPY(GHASH_H(me
));
815 rc
= bytestring_pywrap(0, g
->ops
->c
->hashsz
);
816 GH_DONE(g
, PyString_AS_STRING(rc
));
821 static PyGetSetDef gchash_pygetset
[] = {
822 #define GETSETNAME(op, name) gch##op##_##name
823 GET (bufsz
, "CH.bufsz -> hash buffer size, or zero")
824 GET (hashsz
, "CH.hashsz -> hash output size")
825 GET (name
, "CH.name -> name of this kind of hash")
830 static PyMethodDef ghash_pymethods
[] = {
831 #define METHNAME(name) ghmeth_##name
832 METH (hash
, "H.hash(M)")
833 #define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
836 #define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
839 METH (hashstrz
, "H.hashstrz(STRING)")
840 METH (done
, "H.done() -> HASH")
845 static PyTypeObject gchash_pytype_skel
= {
846 PyObject_HEAD_INIT(0) 0, /* Header */
847 "GCHash", /* @tp_name@ */
848 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
849 0, /* @tp_itemsize@ */
851 0, /* @tp_dealloc@ */
853 0, /* @tp_getattr@ */
854 0, /* @tp_setattr@ */
855 0, /* @tp_compare@ */
857 0, /* @tp_as_number@ */
858 0, /* @tp_as_sequence@ */
859 0, /* @tp_as_mapping@ */
863 0, /* @tp_getattro@ */
864 0, /* @tp_setattro@ */
865 0, /* @tp_as_buffer@ */
866 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
870 "Hash function metaclass.",
872 0, /* @tp_traverse@ */
874 0, /* @tp_richcompare@ */
875 0, /* @tp_weaklistoffset@ */
877 0, /* @tp_iternext@ */
878 0, /* @tp_methods@ */
879 0, /* @tp_members@ */
880 gchash_pygetset
, /* @tp_getset@ */
883 0, /* @tp_descr_get@ */
884 0, /* @tp_descr_set@ */
885 0, /* @tp_dictoffset@ */
887 PyType_GenericAlloc
, /* @tp_alloc@ */
888 abstract_pynew
, /* @tp_new@ */
893 static PyTypeObject ghash_pytype_skel
= {
894 PyObject_HEAD_INIT(0) 0, /* Header */
895 "GHash", /* @tp_name@ */
896 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
897 0, /* @tp_itemsize@ */
899 ghash_pydealloc
, /* @tp_dealloc@ */
901 0, /* @tp_getattr@ */
902 0, /* @tp_setattr@ */
903 0, /* @tp_compare@ */
905 0, /* @tp_as_number@ */
906 0, /* @tp_as_sequence@ */
907 0, /* @tp_as_mapping@ */
911 0, /* @tp_getattro@ */
912 0, /* @tp_setattro@ */
913 0, /* @tp_as_buffer@ */
914 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
918 "Hash function, abstract base class.",
920 0, /* @tp_traverse@ */
922 0, /* @tp_richcompare@ */
923 0, /* @tp_weaklistoffset@ */
925 0, /* @tp_iternext@ */
926 ghash_pymethods
, /* @tp_methods@ */
927 0, /* @tp_members@ */
931 0, /* @tp_descr_get@ */
932 0, /* @tp_descr_set@ */
933 0, /* @tp_dictoffset@ */
935 PyType_GenericAlloc
, /* @tp_alloc@ */
936 abstract_pynew
, /* @tp_new@ */
941 /*----- Message authentication --------------------------------------------*/
943 PyTypeObject
*gcmac_pytype
, *gmac_pytype
, *gmhash_pytype
;
945 CONVFUNC(gcmac
, gcmac
*, GCMAC_CM
)
946 CONVFUNC(gmac
, gmac
*, GMAC_M
)
947 CONVFUNC(gmhash
, ghash
*, GHASH_H
)
949 static PyObject
*gmac_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
951 char *kwlist
[] = { "k", 0 };
955 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", kwlist
, &k
, &sz
))
957 if (keysz(sz
, GCMAC_CM(ty
)->keysz
) != sz
) VALERR("bad key length");
958 return (gmac_pywrap((PyObject
*)ty
,
959 GM_KEY(GCMAC_CM(ty
), k
, sz
),
965 static PyObject
*gmhash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
967 char *kwlist
[] = { 0 };
970 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", kwlist
)) return (0);
971 g
= PyObject_NEW(ghash_pyobj
, ty
);
972 g
->h
= GM_INIT(GMAC_M(ty
));
975 return ((PyObject
*)g
);
978 PyObject
*gcmac_pywrap(gcmac
*cm
)
980 gcmac_pyobj
*g
= newtype(gcmac_pytype
, 0, cm
->name
);
982 g
->ty
.ht_type
.tp_basicsize
= sizeof(gmac_pyobj
);
983 g
->ty
.ht_type
.tp_base
= gmac_pytype
;
984 Py_INCREF(gmac_pytype
);
985 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
986 Py_TPFLAGS_BASETYPE
|
987 Py_TPFLAGS_HEAPTYPE
);
988 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
989 g
->ty
.ht_type
.tp_free
= 0;
990 g
->ty
.ht_type
.tp_new
= gmac_pynew
;
991 typeready(&g
->ty
.ht_type
);
992 return ((PyObject
*)g
);
995 PyObject
*gmac_pywrap(PyObject
*cobj
, gmac
*m
, unsigned f
)
998 if (!cobj
) cobj
= gcmac_pywrap((/*unconst*/ gcmac
*)GM_CLASS(m
));
999 else Py_INCREF(cobj
);
1000 g
= newtype((PyTypeObject
*)cobj
, 0, 0);
1001 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
1002 g
->ty
.ht_name
= PyString_FromFormat("%s(keyed)", m
->ops
->c
->name
);
1003 g
->ty
.ht_type
.tp_name
= PyString_AS_STRING(g
->ty
.ht_name
);
1004 g
->ty
.ht_type
.tp_base
= gmhash_pytype
;
1005 Py_INCREF(gmac_pytype
);
1006 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
1007 Py_TPFLAGS_BASETYPE
|
1008 Py_TPFLAGS_HEAPTYPE
);
1009 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
1010 g
->ty
.ht_type
.tp_free
= 0;
1011 g
->ty
.ht_type
.tp_new
= gmhash_pynew
;
1012 typeready(&g
->ty
.ht_type
);
1015 return ((PyObject
*)g
);
1018 static void gmac_pydealloc(PyObject
*me
)
1020 if (GMAC_F(me
) & f_freeme
)
1021 GM_DESTROY(GMAC_M(me
));
1022 Py_DECREF(me
->ob_type
);
1023 PyType_Type
.tp_dealloc(me
);
1026 static PyObject
*gcmget_name(PyObject
*me
, void *hunoz
)
1027 { return (PyString_FromString(GCMAC_CM(me
)->name
)); }
1029 static PyObject
*gcmget_keysz(PyObject
*me
, void *hunoz
)
1030 { return (keysz_pywrap(GCMAC_CM(me
)->keysz
)); }
1032 static PyObject
*gcmget_tagsz(PyObject
*me
, void *hunoz
)
1033 { return (PyInt_FromLong(GCMAC_CM(me
)->hashsz
)); }
1035 static PyGetSetDef gcmac_pygetset
[] = {
1036 #define GETSETNAME(op, name) gcm##op##_##name
1037 GET (keysz
, "CM.keysz -> acceptable key sizes")
1038 GET (tagsz
, "CM.tagsz -> MAC output size")
1039 GET (name
, "CM.name -> name of this kind of MAC")
1044 static PyTypeObject gcmac_pytype_skel
= {
1045 PyObject_HEAD_INIT(0) 0, /* Header */
1046 "GCMAC", /* @tp_name@ */
1047 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
1048 0, /* @tp_itemsize@ */
1050 0, /* @tp_dealloc@ */
1052 0, /* @tp_getattr@ */
1053 0, /* @tp_setattr@ */
1054 0, /* @tp_compare@ */
1056 0, /* @tp_as_number@ */
1057 0, /* @tp_as_sequence@ */
1058 0, /* @tp_as_mapping@ */
1062 0, /* @tp_getattro@ */
1063 0, /* @tp_setattro@ */
1064 0, /* @tp_as_buffer@ */
1065 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1066 Py_TPFLAGS_BASETYPE
,
1069 "Message authentication code metametaclass.",
1071 0, /* @tp_traverse@ */
1073 0, /* @tp_richcompare@ */
1074 0, /* @tp_weaklistoffset@ */
1076 0, /* @tp_iternext@ */
1077 0, /* @tp_methods@ */
1078 0, /* @tp_members@ */
1079 gcmac_pygetset
, /* @tp_getset@ */
1082 0, /* @tp_descr_get@ */
1083 0, /* @tp_descr_set@ */
1084 0, /* @tp_dictoffset@ */
1086 PyType_GenericAlloc
, /* @tp_alloc@ */
1087 abstract_pynew
, /* @tp_new@ */
1092 static PyTypeObject gmac_pytype_skel
= {
1093 PyObject_HEAD_INIT(0) 0, /* Header */
1094 "GMAC", /* @tp_name@ */
1095 sizeof(gmac_pyobj
), /* @tp_basicsize@ */
1096 0, /* @tp_itemsize@ */
1098 gmac_pydealloc
, /* @tp_dealloc@ */
1100 0, /* @tp_getattr@ */
1101 0, /* @tp_setattr@ */
1102 0, /* @tp_compare@ */
1104 0, /* @tp_as_number@ */
1105 0, /* @tp_as_sequence@ */
1106 0, /* @tp_as_mapping@ */
1110 0, /* @tp_getattro@ */
1111 0, /* @tp_setattro@ */
1112 0, /* @tp_as_buffer@ */
1113 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1114 Py_TPFLAGS_BASETYPE
,
1117 "Message authentication code metaclass, abstract base class.",
1119 0, /* @tp_traverse@ */
1121 0, /* @tp_richcompare@ */
1122 0, /* @tp_weaklistoffset@ */
1124 0, /* @tp_iternext@ */
1125 0, /* @tp_methods@ */
1126 0, /* @tp_members@ */
1127 0, /* @tp_getset@ */
1130 0, /* @tp_descr_get@ */
1131 0, /* @tp_descr_set@ */
1132 0, /* @tp_dictoffset@ */
1134 PyType_GenericAlloc
, /* @tp_alloc@ */
1135 abstract_pynew
, /* @tp_new@ */
1140 static PyTypeObject gmhash_pytype_skel
= {
1141 PyObject_HEAD_INIT(0) 0, /* Header */
1142 "GMACHash", /* @tp_name@ */
1143 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
1144 0, /* @tp_itemsize@ */
1146 ghash_pydealloc
, /* @tp_dealloc@ */
1148 0, /* @tp_getattr@ */
1149 0, /* @tp_setattr@ */
1150 0, /* @tp_compare@ */
1152 0, /* @tp_as_number@ */
1153 0, /* @tp_as_sequence@ */
1154 0, /* @tp_as_mapping@ */
1158 0, /* @tp_getattro@ */
1159 0, /* @tp_setattro@ */
1160 0, /* @tp_as_buffer@ */
1161 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1162 Py_TPFLAGS_BASETYPE
,
1165 "Message authentication code, abstract base class.",
1167 0, /* @tp_traverse@ */
1169 0, /* @tp_richcompare@ */
1170 0, /* @tp_weaklistoffset@ */
1172 0, /* @tp_iternext@ */
1173 0, /* @tp_methods@ */
1174 0, /* @tp_members@ */
1175 0, /* @tp_getset@ */
1178 0, /* @tp_descr_get@ */
1179 0, /* @tp_descr_set@ */
1180 0, /* @tp_dictoffset@ */
1182 PyType_GenericAlloc
, /* @tp_alloc@ */
1183 abstract_pynew
, /* @tp_new@ */
1188 /*----- Special snowflake for Poly1305 ------------------------------------*/
1190 PyTypeObject
*poly1305cls_pytype
, *poly1305key_pytype
, *poly1305hash_pytype
;
1192 typedef struct poly1305key_pyobj
{
1193 PyHeapTypeObject ty
;
1195 } poly1305key_pyobj
;
1197 typedef struct poly1305hash_pyobj
{
1202 } poly1305hash_pyobj
;
1204 #define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
1205 #define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
1206 CONVFUNC(poly1305hash
, poly1305_ctx
*, P1305_CTX
)
1208 static PyObject
*poly1305hash_pynew(PyTypeObject
*ty
,
1209 PyObject
*arg
, PyObject
*kw
)
1211 char *kwlist
[] = { "mask", 0 };
1212 poly1305key_pyobj
*pk
= (poly1305key_pyobj
*)ty
;
1213 poly1305hash_pyobj
*ph
;
1217 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|s#:new", kwlist
, &m
, &sz
))
1219 if (m
&& sz
!= POLY1305_MASKSZ
) VALERR("bad mask length");
1220 ph
= PyObject_NEW(poly1305hash_pyobj
, ty
);
1222 if (m
) ph
->f
|= f_mask
;
1223 poly1305_macinit(&ph
->ctx
, &pk
->k
, m
);
1225 return ((PyObject
*)ph
);
1230 static PyObject
*poly1305key_pynew(PyTypeObject
*ty
,
1231 PyObject
*arg
, PyObject
*kw
)
1233 char *kwlist
[] = { "k", 0 };
1234 poly1305key_pyobj
*pk
;
1238 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", kwlist
, &k
, &sz
))
1240 if (keysz(sz
, poly1305_keysz
) != sz
) VALERR("bad key length");
1242 pk
= newtype(ty
, 0, 0);
1243 pk
->ty
.ht_name
= PyString_FromString("poly1305(keyed)");
1244 pk
->ty
.ht_type
.tp_basicsize
= sizeof(poly1305hash_pyobj
);
1245 pk
->ty
.ht_type
.tp_name
= PyString_AS_STRING(pk
->ty
.ht_name
);
1246 pk
->ty
.ht_type
.tp_base
= poly1305hash_pytype
;
1247 Py_INCREF(poly1305key_pytype
);
1248 pk
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
1249 Py_TPFLAGS_BASETYPE
|
1250 Py_TPFLAGS_HEAPTYPE
);
1251 pk
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
1252 pk
->ty
.ht_type
.tp_free
= 0;
1253 pk
->ty
.ht_type
.tp_new
= poly1305hash_pynew
;
1254 typeready(&pk
->ty
.ht_type
);
1256 poly1305_keyinit(&pk
->k
, k
, sz
);
1257 return ((PyObject
*)pk
);
1263 static PyObject
*poly1305clsget_name(PyObject
*me
, void *hunoz
)
1264 { return (PyString_FromString("poly1305")); }
1266 static PyObject
*poly1305clsget_keysz(PyObject
*me
, void *hunoz
)
1267 { return (keysz_pywrap(poly1305_keysz
)); }
1269 static PyObject
*poly1305clsget_masksz(PyObject
*me
, void *hunoz
)
1270 { return (PyInt_FromLong(POLY1305_MASKSZ
)); }
1272 static PyObject
*poly1305clsget_tagsz(PyObject
*me
, void *hunoz
)
1273 { return (PyInt_FromLong(POLY1305_TAGSZ
)); }
1275 static PyObject
*polymeth_copy(PyObject
*me
, PyObject
*arg
)
1277 poly1305hash_pyobj
*ph
;
1278 if (!PyArg_ParseTuple(arg
, ":copy")) return (0);
1279 ph
= PyObject_NEW(poly1305hash_pyobj
, me
->ob_type
);
1280 poly1305_copy(&ph
->ctx
, P1305_CTX(me
));
1281 Py_INCREF(me
->ob_type
);
1282 return ((PyObject
*)ph
);
1285 static PyObject
*polymeth_hash(PyObject
*me
, PyObject
*arg
)
1289 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
1290 poly1305_hash(P1305_CTX(me
), p
, sz
);
1294 #define POLYMETH_HASHU_(n, W, w) \
1295 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
1299 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
1300 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
1305 DOUINTCONV(POLYMETH_HASHU_
)
1307 #define POLYMETH_HASHBUF_(n, W, w) \
1308 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
1313 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1314 if (sz > MASK##n) TYERR("string too long"); \
1315 STORE##W(b, sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
1316 poly1305_hash(P1305_CTX(me), p, sz); \
1321 DOUINTCONV(POLYMETH_HASHBUF_
)
1323 static PyObject
*polymeth_hashstrz(PyObject
*me
, PyObject
*arg
)
1326 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
1327 poly1305_hash(P1305_CTX(me
), p
, strlen(p
) + 1);
1331 static PyObject
*polymeth_flush(PyObject
*me
, PyObject
*arg
)
1333 if (!PyArg_ParseTuple(arg
, ":flush")) return (0);
1334 poly1305_flush(P1305_CTX(me
));
1338 static PyObject
*polymeth_concat(PyObject
*me
, PyObject
*arg
)
1340 PyObject
*pre
, *suff
;
1341 if (!PyArg_ParseTuple(arg
, "OO:concat", &pre
, &suff
)) return (0);
1342 if (!PyObject_TypeCheck(pre
, poly1305hash_pytype
) ||
1343 !PyObject_TypeCheck(suff
, poly1305hash_pytype
))
1344 TYERR("wanted a poly1305hash");
1345 if (me
->ob_type
!= pre
->ob_type
|| me
->ob_type
!= suff
->ob_type
)
1346 TYERR("key mismatch");
1347 if (P1305_CTX(pre
)->nbuf
) VALERR("prefix is not block-aligned");
1348 poly1305_concat(P1305_CTX(me
), P1305_CTX(pre
), P1305_CTX(suff
));
1354 static PyObject
*polymeth_done(PyObject
*me
, PyObject
*arg
)
1357 if (!PyArg_ParseTuple(arg
, ":done")) return (0);
1358 if (!(P1305_F(me
) & f_mask
)) VALERR("no mask");
1359 rc
= bytestring_pywrap(0, POLY1305_TAGSZ
);
1360 poly1305_done(P1305_CTX(me
), PyString_AS_STRING(rc
));
1366 static PyGetSetDef poly1305cls_pygetset
[] = {
1367 #define GETSETNAME(op, name) poly1305cls##op##_##name
1368 GET (keysz
, "PC.keysz -> acceptable key sizes")
1369 GET (masksz
, "PC.masksz -> mask size")
1370 GET (tagsz
, "PC.tagsz -> MAC output size")
1371 GET (name
, "PC.name -> name of this kind of MAC")
1376 static PyMethodDef poly1305hash_pymethods
[] = {
1377 #define METHNAME(name) polymeth_##name
1378 METH (copy
, "P.copy() -> PP")
1379 METH (hash
, "P.hash(M)")
1380 #define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
1383 #define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
1384 DOUINTCONV(METHBUF_
)
1386 METH (hashstrz
, "P.hashstrz(STRING)")
1387 METH (flush
, "P.flush()")
1388 METH (concat
, "P.concat(PREFIX, SUFFIX)")
1389 METH (done
, "P.done() -> TAG")
1394 static PyTypeObject poly1305cls_pytype_skel
= {
1395 PyObject_HEAD_INIT(0) 0, /* Header */
1396 "Poly1305Class", /* @tp_name@ */
1397 sizeof(PyHeapTypeObject
), /* @tp_basicsize@ */
1398 0, /* @tp_itemsize@ */
1400 0, /* @tp_dealloc@ */
1402 0, /* @tp_getattr@ */
1403 0, /* @tp_setattr@ */
1404 0, /* @tp_compare@ */
1406 0, /* @tp_as_number@ */
1407 0, /* @tp_as_sequence@ */
1408 0, /* @tp_as_mapping@ */
1412 0, /* @tp_getattro@ */
1413 0, /* @tp_setattro@ */
1414 0, /* @tp_as_buffer@ */
1415 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1416 Py_TPFLAGS_BASETYPE
,
1419 "Poly1305 metametaclass. Best not to ask.",
1421 0, /* @tp_traverse@ */
1423 0, /* @tp_richcompare@ */
1424 0, /* @tp_weaklistoffset@ */
1426 0, /* @tp_iternext@ */
1427 0, /* @tp_methods@ */
1428 0, /* @tp_members@ */
1429 poly1305cls_pygetset
, /* @tp_getset@ */
1432 0, /* @tp_descr_get@ */
1433 0, /* @tp_descr_set@ */
1434 0, /* @tp_dictoffset@ */
1436 PyType_GenericAlloc
, /* @tp_alloc@ */
1437 abstract_pynew
, /* @tp_new@ */
1442 static PyTypeObject poly1305key_pytype_skel
= {
1443 PyObject_HEAD_INIT(0) 0, /* Header */
1444 "poly1305", /* @tp_name@ */
1445 sizeof(poly1305key_pyobj
), /* @tp_basicsize@ */
1446 0, /* @tp_itemsize@ */
1448 0, /* @tp_dealloc@ */
1450 0, /* @tp_getattr@ */
1451 0, /* @tp_setattr@ */
1452 0, /* @tp_compare@ */
1454 0, /* @tp_as_number@ */
1455 0, /* @tp_as_sequence@ */
1456 0, /* @tp_as_mapping@ */
1460 0, /* @tp_getattro@ */
1461 0, /* @tp_setattro@ */
1462 0, /* @tp_as_buffer@ */
1463 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1464 Py_TPFLAGS_BASETYPE
,
1469 0, /* @tp_traverse@ */
1471 0, /* @tp_richcompare@ */
1472 0, /* @tp_weaklistoffset@ */
1474 0, /* @tp_iternext@ */
1475 0, /* @tp_methods@ */
1476 0, /* @tp_members@ */
1477 0, /* @tp_getset@ */
1480 0, /* @tp_descr_get@ */
1481 0, /* @tp_descr_set@ */
1482 0, /* @tp_dictoffset@ */
1484 PyType_GenericAlloc
, /* @tp_alloc@ */
1485 poly1305key_pynew
, /* @tp_new@ */
1490 static PyTypeObject poly1305hash_pytype_skel
= {
1491 PyObject_HEAD_INIT(0) 0, /* Header */
1492 "Poly1305Hash", /* @tp_name@ */
1493 sizeof(poly1305hash_pyobj
), /* @tp_basicsize@ */
1494 0, /* @tp_itemsize@ */
1496 0, /* @tp_dealloc@ */
1498 0, /* @tp_getattr@ */
1499 0, /* @tp_setattr@ */
1500 0, /* @tp_compare@ */
1502 0, /* @tp_as_number@ */
1503 0, /* @tp_as_sequence@ */
1504 0, /* @tp_as_mapping@ */
1508 0, /* @tp_getattro@ */
1509 0, /* @tp_setattro@ */
1510 0, /* @tp_as_buffer@ */
1511 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1512 Py_TPFLAGS_BASETYPE
,
1515 "Poly1305 MAC context base class.",
1517 0, /* @tp_traverse@ */
1519 0, /* @tp_richcompare@ */
1520 0, /* @tp_weaklistoffset@ */
1522 0, /* @tp_iternext@ */
1523 poly1305hash_pymethods
, /* @tp_methods@ */
1524 0, /* @tp_members@ */
1525 0, /* @tp_getset@ */
1528 0, /* @tp_descr_get@ */
1529 0, /* @tp_descr_set@ */
1530 0, /* @tp_dictoffset@ */
1532 PyType_GenericAlloc
, /* @tp_alloc@ */
1533 abstract_pynew
, /* @tp_new@ */
1538 /*----- Special snowflake for HSalsa and HChaCha --------------------------*/
1540 #define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
1541 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
1543 dance##_ctx dance; \
1545 Py_ssize_t ksz, nsz; \
1547 if (!PyArg_ParseTuple(arg, "s#s#:" #hdance "_prf", \
1548 &k, &ksz, &n, &nsz)) \
1550 if (ksz != DANCE##_KEYSZ) VALERR("bad key length"); \
1551 if (nsz != HDANCE##_INSZ) VALERR("bad input length"); \
1552 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
1553 dance##_init(&dance, k, ksz, 0); \
1554 hdance##_prf(&dance, n, PyString_AS_STRING(rc)); \
1560 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa20
)
1561 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa2012
)
1562 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa208
)
1564 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha20
)
1565 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha12
)
1566 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha8
)
1568 /*----- Pseudorandom permutations -----------------------------------------*/
1570 static PyTypeObject
*gcprp_pytype
, *gprp_pytype
;
1572 typedef struct prpinfo
{
1577 void (*init
)(void *, const void *, size_t);
1578 void (*eblk
)(void *, const void *, void *);
1579 void (*dblk
)(void *, const void *, void *);
1582 #define PRP_DEF(PRE, pre) \
1583 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
1584 { pre##_init(ctx, k, ksz); } \
1585 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
1587 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
1588 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
1590 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
1592 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
1593 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
1595 static const prpinfo pre##_prpinfo = { \
1596 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
1597 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
1601 static const struct prpinfo
*const gprptab
[] = {
1602 #define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
1607 typedef struct gcprp_pyobj
{
1608 PyHeapTypeObject ty
;
1611 #define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
1613 typedef struct gprp_pyobj
{
1617 #define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
1618 #define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
1620 typedef struct prp
{
1625 static PyObject
*gprp_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
1627 char *kwlist
[] = { "key", 0 };
1630 const prpinfo
*prp
= GCPRP_PRP(ty
);
1633 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", kwlist
, &k
, &sz
))
1635 if (keysz(sz
, prp
->keysz
) != sz
) VALERR("bad key length");
1636 me
= (PyObject
*)ty
->tp_alloc(ty
, 0);
1638 prp
->init(GPRP_CTX(me
), k
, sz
);
1645 static void gprp_pydealloc(PyObject
*me
)
1646 { Py_DECREF(me
->ob_type
); FREEOBJ(me
); }
1648 static PyObject
*gcprp_pywrap(const prpinfo
*prp
)
1650 gcprp_pyobj
*g
= newtype(gcprp_pytype
, 0, prp
->name
);
1652 g
->ty
.ht_type
.tp_basicsize
= sizeof(gprp_pyobj
) + prp
->ctxsz
;
1653 g
->ty
.ht_type
.tp_base
= gprp_pytype
;
1654 Py_INCREF(gprp_pytype
);
1655 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
1656 Py_TPFLAGS_BASETYPE
|
1657 Py_TPFLAGS_HEAPTYPE
);
1658 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
1659 g
->ty
.ht_type
.tp_free
= 0;
1660 g
->ty
.ht_type
.tp_new
= gprp_pynew
;
1661 typeready(&g
->ty
.ht_type
);
1662 return ((PyObject
*)g
);
1665 static PyObject
*gcpget_name(PyObject
*me
, void *hunoz
)
1666 { return (PyString_FromString(GCPRP_PRP(me
)->name
)); }
1667 static PyObject
*gcpget_keysz(PyObject
*me
, void *hunoz
)
1668 { return (keysz_pywrap(GCPRP_PRP(me
)->keysz
)); }
1669 static PyObject
*gcpget_blksz(PyObject
*me
, void *hunoz
)
1670 { return (PyInt_FromLong(GCPRP_PRP(me
)->blksz
)); }
1672 static PyObject
*gpmeth_encrypt(PyObject
*me
, PyObject
*arg
)
1678 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &p
, &n
)) goto end
;
1679 if (n
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
1680 rc
= bytestring_pywrap(0, n
);
1681 GPRP_PRP(me
)->eblk(GPRP_CTX(me
), p
, PyString_AS_STRING(rc
));
1686 static PyObject
*gpmeth_decrypt(PyObject
*me
, PyObject
*arg
)
1692 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &p
, &n
)) goto end
;
1693 if (n
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
1694 rc
= bytestring_pywrap(0, n
);
1695 GPRP_PRP(me
)->dblk(GPRP_CTX(me
), p
, PyString_AS_STRING(rc
));
1700 static PyGetSetDef gcprp_pygetset
[] = {
1701 #define GETSETNAME(op, name) gcp##op##_##name
1702 GET (keysz
, "CP.keysz -> acceptable key sizes")
1703 GET (blksz
, "CP.blksz -> block size")
1704 GET (name
, "CP.name -> name of this kind of PRP")
1709 static PyMethodDef gprp_pymethods
[] = {
1710 #define METHNAME(name) gpmeth_##name
1711 METH (encrypt
, "P.encrypt(PT) -> CT")
1712 METH (decrypt
, "P.decrypt(CT) -> PT")
1717 static PyTypeObject gcprp_pytype_skel
= {
1718 PyObject_HEAD_INIT(0) 0, /* Header */
1719 "GCPRP", /* @tp_name@ */
1720 sizeof(gcprp_pyobj
), /* @tp_basicsize@ */
1721 0, /* @tp_itemsize@ */
1723 0, /* @tp_dealloc@ */
1725 0, /* @tp_getattr@ */
1726 0, /* @tp_setattr@ */
1727 0, /* @tp_compare@ */
1729 0, /* @tp_as_number@ */
1730 0, /* @tp_as_sequence@ */
1731 0, /* @tp_as_mapping@ */
1735 0, /* @tp_getattro@ */
1736 0, /* @tp_setattro@ */
1737 0, /* @tp_as_buffer@ */
1738 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1739 Py_TPFLAGS_BASETYPE
,
1742 "Pseudorandom permutation metaclass.",
1744 0, /* @tp_traverse@ */
1746 0, /* @tp_richcompare@ */
1747 0, /* @tp_weaklistoffset@ */
1749 0, /* @tp_iternext@ */
1750 0, /* @tp_methods@ */
1751 0, /* @tp_members@ */
1752 gcprp_pygetset
, /* @tp_getset@ */
1755 0, /* @tp_descr_get@ */
1756 0, /* @tp_descr_set@ */
1757 0, /* @tp_dictoffset@ */
1759 PyType_GenericAlloc
, /* @tp_alloc@ */
1760 abstract_pynew
, /* @tp_new@ */
1765 static PyTypeObject gprp_pytype_skel
= {
1766 PyObject_HEAD_INIT(0) 0, /* Header */
1767 "GPRP", /* @tp_name@ */
1768 sizeof(gprp_pyobj
), /* @tp_basicsize@ */
1769 0, /* @tp_itemsize@ */
1771 gprp_pydealloc
, /* @tp_dealloc@ */
1773 0, /* @tp_getattr@ */
1774 0, /* @tp_setattr@ */
1775 0, /* @tp_compare@ */
1777 0, /* @tp_as_number@ */
1778 0, /* @tp_as_sequence@ */
1779 0, /* @tp_as_mapping@ */
1783 0, /* @tp_getattro@ */
1784 0, /* @tp_setattro@ */
1785 0, /* @tp_as_buffer@ */
1786 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1787 Py_TPFLAGS_BASETYPE
,
1790 "Pseudorandom permutation, abstract base class.",
1792 0, /* @tp_traverse@ */
1794 0, /* @tp_richcompare@ */
1795 0, /* @tp_weaklistoffset@ */
1797 0, /* @tp_iternext@ */
1798 gprp_pymethods
, /* @tp_methods@ */
1799 0, /* @tp_members@ */
1800 0, /* @tp_getset@ */
1803 0, /* @tp_descr_get@ */
1804 0, /* @tp_descr_set@ */
1805 0, /* @tp_dictoffset@ */
1807 PyType_GenericAlloc
, /* @tp_alloc@ */
1808 abstract_pynew
, /* @tp_new@ */
1813 /*----- Main code ---------------------------------------------------------*/
1815 static PyMethodDef methods
[] = {
1816 #define METHNAME(func) meth_##func
1817 METH (_KeySZ_fromdl
, "\
1818 fromdl(N) -> M: convert integer discrete log field size to work factor")
1819 METH (_KeySZ_fromschnorr
, "\
1820 fromschnorr(N) -> M: convert Schnorr group order to work factor")
1821 METH (_KeySZ_fromif
, "\
1822 fromif(N) -> M: convert integer factorization problem size to work factor")
1823 METH (_KeySZ_fromec
, "\
1824 fromec(N) -> M: convert elliptic curve group order to work factor")
1825 METH (_KeySZ_todl
, "\
1826 todl(N) -> M: convert work factor to integer discrete log field size")
1827 METH (_KeySZ_toschnorr
, "\
1828 toschnorr(N) -> M: convert work factor to Schnorr group order")
1829 METH (_KeySZ_toif
, "\
1830 toif(N) -> M: convert work factor to integer factorization problem size")
1831 METH (_KeySZ_toec
, "\
1832 toec(N) -> M: convert work factor to elliptic curve group order")
1833 METH (_KeySZ_toec
, "\
1834 toec(N) -> M: convert work factor to elliptic curve group order")
1835 #define METH_HDANCE(hdance, HDance) METH(hdance##_prf, "\
1836 " #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
1837 METH_HDANCE(hsalsa20
, "HSalsa20")
1838 METH_HDANCE(hsalsa2012
, "HSalsa20/12")
1839 METH_HDANCE(hsalsa208
, "HSalsa20/8")
1840 METH_HDANCE(hchacha20
, "HChaCha20")
1841 METH_HDANCE(hchacha12
, "HChaCha12")
1842 METH_HDANCE(hchacha8
, "HChaCha8")
1848 void algorithms_pyinit(void)
1850 INITTYPE(keysz
, root
);
1851 INITTYPE(keyszany
, keysz
);
1852 INITTYPE(keyszrange
, keysz
);
1853 INITTYPE(keyszset
, keysz
);
1854 INITTYPE(gccipher
, type
);
1855 INITTYPE(gcipher
, root
);
1856 INITTYPE(gchash
, type
);
1857 INITTYPE(ghash
, root
);
1858 INITTYPE(gcmac
, type
);
1859 INITTYPE(gmac
, type
);
1860 INITTYPE(gmhash
, ghash
);
1861 INITTYPE(poly1305cls
, type
);
1862 INITTYPE_META(poly1305key
, type
, poly1305cls
);
1863 INITTYPE(poly1305hash
, root
);
1864 INITTYPE(gcprp
, type
);
1865 INITTYPE(gprp
, root
);
1866 addmethods(methods
);
1869 GEN(gcciphers
, cipher
)
1872 #define gcprp prpinfo
1875 void algorithms_pyinsert(PyObject
*mod
)
1878 INSERT("KeySZ", keysz_pytype
);
1879 INSERT("KeySZAny", keyszany_pytype
);
1880 INSERT("KeySZRange", keyszrange_pytype
);
1881 INSERT("KeySZSet", keyszset_pytype
);
1882 INSERT("GCCipher", gccipher_pytype
);
1883 INSERT("GCipher", gcipher_pytype
);
1884 INSERT("gcciphers", gcciphers());
1885 INSERT("GCHash", gchash_pytype
);
1886 INSERT("GHash", ghash_pytype
);
1887 INSERT("gchashes", d
= gchashes());
1888 sha_pyobj
= PyDict_GetItemString(d
, "sha"); Py_INCREF(sha_pyobj
);
1889 has160_pyobj
= PyDict_GetItemString(d
, "has160"); Py_INCREF(has160_pyobj
);
1890 INSERT("GCMAC", gcmac_pytype
);
1891 INSERT("GMAC", gmac_pytype
);
1892 INSERT("GMACHash", gmhash_pytype
);
1893 INSERT("gcmacs", gcmacs());
1894 INSERT("Poly1305Class", poly1305cls_pytype
);
1895 INSERT("poly1305", poly1305key_pytype
);
1896 INSERT("Poly1305Hash", poly1305hash_pytype
);
1897 INSERT("GCPRP", gcprp_pytype
);
1898 INSERT("GPRP", gprp_pytype
);
1899 INSERT("gcprps", gcprps());
1902 /*----- That's all, folks -------------------------------------------------*/