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"
31 #include "algorithms.h"
34 /*----- Key sizes ---------------------------------------------------------*/
36 PyTypeObject
*keysz_pytype
;
37 PyTypeObject
*keyszany_pytype
, *keyszrange_pytype
, *keyszset_pytype
;
38 PyObject
*sha_pyobj
, *has160_pyobj
;
41 # define KSZ_OPMASK 0x1f
45 # define KSZ_16BIT 0x20
48 PyObject
*keysz_pywrap(const octet
*k
)
51 #define ARG(i) (op&KSZ_16BIT ? LOAD16(k + 2*(i)) : k[i])
52 switch (op
&KSZ_OPMASK
) {
54 keysz_pyobj
*o
= PyObject_New(keysz_pyobj
, keyszany_pytype
);
56 return ((PyObject
*)o
);
60 PyObject_New(keyszrange_pyobj
, keyszrange_pytype
);
65 if (!o
->mod
) o
->mod
= 1;
66 return ((PyObject
*)o
);
70 PyObject_New(keyszset_pyobj
, keyszset_pytype
);
73 for (i
= 0; ARG(i
); i
++) ;
74 n
= i
; o
->set
= PyTuple_New(n
);
75 for (i
= 0; i
< n
; i
++)
76 PyTuple_SET_ITEM(o
->set
, i
, PyInt_FromLong(ARG(i
)));
77 return ((PyObject
*)o
);
85 static PyObject
*keyszany_pynew(PyTypeObject
*ty
,
86 PyObject
*arg
, PyObject
*kw
)
88 static const char *const kwlist
[] = { "default", 0 };
92 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i:new", KWLIST
, &dfl
))
94 if (dfl
< 0) VALERR("key size cannot be negative");
95 o
= (keysz_pyobj
*)ty
->tp_alloc(ty
, 0);
97 return ((PyObject
*)o
);
102 static PyObject
*keyszrange_pynew(PyTypeObject
*ty
,
103 PyObject
*arg
, PyObject
*kw
)
105 static const char *const kwlist
[] = { "default", "min", "max", "mod", 0 };
106 int dfl
, min
= 0, max
= 0, mod
= 1;
109 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i|iii:new", KWLIST
,
110 &dfl
, &min
, &max
, &mod
))
112 if (dfl
< 0 || min
< 0) VALERR("key size cannot be negative");
113 if (min
> dfl
|| (max
&& dfl
> max
)) VALERR("bad key size bounds");
114 if (mod
<= 0 || dfl
%mod
|| min
%mod
|| max
%mod
)
115 VALERR("bad key size modulus");
116 o
= (keyszrange_pyobj
*)ty
->tp_alloc(ty
, 0);
121 return ((PyObject
*)o
);
126 static PyObject
*keyszset_pynew(PyTypeObject
*ty
,
127 PyObject
*arg
, PyObject
*kw
)
129 static const char *const kwlist
[] = { "default", "set", 0 };
132 PyObject
*x
= 0, *l
= 0;
133 keyszset_pyobj
*o
= 0;
135 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i|O:new", KWLIST
, &dfl
, &set
))
137 if (!set
) set
= PyTuple_New(0);
139 if (!PySequence_Check(set
)) TYERR("want a sequence");
140 n
= PySequence_Size(set
); if (n
< 0) goto end
;
141 l
= PyList_New(0); if (!l
) goto end
;
142 if (dfl
< 0) VALERR("key size cannot be negative");
143 x
= PyInt_FromLong(dfl
);
147 for (i
= 0; i
< n
; i
++) {
148 if ((x
= PySequence_GetItem(set
, i
)) == 0) goto end
;
149 xx
= PyInt_AsLong(x
);
150 if (PyErr_Occurred()) goto end
;
151 if (xx
== dfl
) continue;
152 if (xx
< 0) VALERR("key size cannot be negative");
158 if ((set
= PySequence_Tuple(l
)) == 0) goto end
;
159 o
= (keyszset_pyobj
*)ty
->tp_alloc(ty
, 0);
167 return ((PyObject
*)o
);
170 static PyObject
*kaget_min(PyObject
*me
, void *hunoz
)
171 { return (PyInt_FromLong(0)); }
172 #define kaget_max kaget_min
174 static PyObject
*ksget_min(PyObject
*me
, void *hunoz
)
176 PyObject
*set
= ((keyszset_pyobj
*)me
)->set
;
178 n
= PyTuple_Size(set
);
179 for (i
= 0; i
< n
; i
++) {
180 y
= PyInt_AsLong(PyTuple_GetItem(set
, i
));
181 if (x
== -1 || y
< x
) x
= y
;
183 return (PyInt_FromLong(x
));
186 static PyObject
*ksget_max(PyObject
*me
, void *hunoz
)
188 PyObject
*set
= ((keyszset_pyobj
*)me
)->set
;
190 n
= PyTuple_Size(set
);
191 for (i
= 0; i
< n
; i
++) {
192 y
= PyInt_AsLong(PyTuple_GetItem(set
, i
));
195 return (PyInt_FromLong(x
));
198 static PyMemberDef keysz_pymembers
[] = {
199 #define MEMBERSTRUCT keysz_pyobj
200 #define default dfl /* ugh! */
201 MEMBER(default, T_INT
, READONLY
, "KSZ.default -> default key size")
207 static PyGetSetDef keyszany_pygetset
[] = {
208 #define GETSETNAME(op, name) ka##op##_##name
209 GET (min
, "KSZ.min -> smallest allowed key size")
210 GET (max
, "KSZ.max -> largest allowed key size")
215 static PyMemberDef keyszrange_pymembers
[] = {
216 #define MEMBERSTRUCT keyszrange_pyobj
217 MEMBER(min
, T_INT
, READONLY
, "KSZ.min -> smallest allowed key size")
218 MEMBER(max
, T_INT
, READONLY
, "KSZ.max -> largest allowed key size")
219 MEMBER(mod
, T_INT
, READONLY
,
220 "KSZ.mod -> key size must be a multiple of this")
225 static PyGetSetDef keyszset_pygetset
[] = {
226 #define GETSETNAME(op, name) ks##op##_##name
227 GET (min
, "KSZ.min -> smallest allowed key size")
228 GET (max
, "KSZ.max -> largest allowed key size")
233 static PyMemberDef keyszset_pymembers
[] = {
234 #define MEMBERSTRUCT keyszset_pyobj
235 MEMBER(set
, T_OBJECT
, READONLY
, "KSZ.set -> allowed key sizes")
240 static PyTypeObject keysz_pytype_skel
= {
241 PyObject_HEAD_INIT(0) 0, /* Header */
242 "KeySZ", /* @tp_name@ */
243 sizeof(keysz_pyobj
), /* @tp_basicsize@ */
244 0, /* @tp_itemsize@ */
246 0, /* @tp_dealloc@ */
248 0, /* @tp_getattr@ */
249 0, /* @tp_setattr@ */
250 0, /* @tp_compare@ */
252 0, /* @tp_as_number@ */
253 0, /* @tp_as_sequence@ */
254 0, /* @tp_as_mapping@ */
258 0, /* @tp_getattro@ */
259 0, /* @tp_setattro@ */
260 0, /* @tp_as_buffer@ */
261 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
265 "Key size constraints. Abstract.",
267 0, /* @tp_traverse@ */
269 0, /* @tp_richcompare@ */
270 0, /* @tp_weaklistoffset@ */
272 0, /* @tp_iternext@ */
273 0, /* @tp_methods@ */
274 keysz_pymembers
, /* @tp_members@ */
278 0, /* @tp_descr_get@ */
279 0, /* @tp_descr_set@ */
280 0, /* @tp_dictoffset@ */
282 PyType_GenericAlloc
, /* @tp_alloc@ */
283 abstract_pynew
, /* @tp_new@ */
288 static PyTypeObject keyszany_pytype_skel
= {
289 PyObject_HEAD_INIT(0) 0, /* Header */
290 "KeySZAny", /* @tp_name@ */
291 sizeof(keysz_pyobj
), /* @tp_basicsize@ */
292 0, /* @tp_itemsize@ */
294 0, /* @tp_dealloc@ */
296 0, /* @tp_getattr@ */
297 0, /* @tp_setattr@ */
298 0, /* @tp_compare@ */
300 0, /* @tp_as_number@ */
301 0, /* @tp_as_sequence@ */
302 0, /* @tp_as_mapping@ */
306 0, /* @tp_getattro@ */
307 0, /* @tp_setattro@ */
308 0, /* @tp_as_buffer@ */
309 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
313 "KeySZAny(DEFAULT)\n\
314 Key size constraints. This object imposes no constraints on size.",
316 0, /* @tp_traverse@ */
318 0, /* @tp_richcompare@ */
319 0, /* @tp_weaklistoffset@ */
321 0, /* @tp_iternext@ */
322 0, /* @tp_methods@ */
323 0, /* @tp_members@ */
324 keyszany_pygetset
, /* @tp_getset@ */
327 0, /* @tp_descr_get@ */
328 0, /* @tp_descr_set@ */
329 0, /* @tp_dictoffset@ */
331 PyType_GenericAlloc
, /* @tp_alloc@ */
332 keyszany_pynew
, /* @tp_new@ */
337 static PyTypeObject keyszrange_pytype_skel
= {
338 PyObject_HEAD_INIT(0) 0, /* Header */
339 "KeySZRange", /* @tp_name@ */
340 sizeof(keyszrange_pyobj
), /* @tp_basicsize@ */
341 0, /* @tp_itemsize@ */
343 0, /* @tp_dealloc@ */
345 0, /* @tp_getattr@ */
346 0, /* @tp_setattr@ */
347 0, /* @tp_compare@ */
349 0, /* @tp_as_number@ */
350 0, /* @tp_as_sequence@ */
351 0, /* @tp_as_mapping@ */
355 0, /* @tp_getattro@ */
356 0, /* @tp_setattro@ */
357 0, /* @tp_as_buffer@ */
358 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
362 "KeySZRange(DEFAULT, [min = 0], [max = 0], [mod = 1])\n\
363 Key size constraints. Key size must be between MIN and MAX inclusive,\n\
364 and be a multiple of MOD.",
366 0, /* @tp_traverse@ */
368 0, /* @tp_richcompare@ */
369 0, /* @tp_weaklistoffset@ */
371 0, /* @tp_iternext@ */
372 0, /* @tp_methods@ */
373 keyszrange_pymembers
, /* @tp_members@ */
377 0, /* @tp_descr_get@ */
378 0, /* @tp_descr_set@ */
379 0, /* @tp_dictoffset@ */
381 PyType_GenericAlloc
, /* @tp_alloc@ */
382 keyszrange_pynew
, /* @tp_new@ */
387 static PyTypeObject keyszset_pytype_skel
= {
388 PyObject_HEAD_INIT(0) 0, /* Header */
389 "KeySZSet", /* @tp_name@ */
390 sizeof(keyszset_pyobj
), /* @tp_basicsize@ */
391 0, /* @tp_itemsize@ */
393 0, /* @tp_dealloc@ */
395 0, /* @tp_getattr@ */
396 0, /* @tp_setattr@ */
397 0, /* @tp_compare@ */
399 0, /* @tp_as_number@ */
400 0, /* @tp_as_sequence@ */
401 0, /* @tp_as_mapping@ */
405 0, /* @tp_getattro@ */
406 0, /* @tp_setattro@ */
407 0, /* @tp_as_buffer@ */
408 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
412 "KeySZSet(DEFAULT, SEQ)\n\
413 Key size constraints. Key size must be DEFAULT or one in SEQ.",
415 0, /* @tp_traverse@ */
417 0, /* @tp_richcompare@ */
418 0, /* @tp_weaklistoffset@ */
420 0, /* @tp_iternext@ */
421 0, /* @tp_methods@ */
422 keyszset_pymembers
, /* @tp_members@ */
423 keyszset_pygetset
, /* @tp_getset@ */
426 0, /* @tp_descr_get@ */
427 0, /* @tp_descr_set@ */
428 0, /* @tp_dictoffset@ */
430 PyType_GenericAlloc
, /* @tp_alloc@ */
431 keyszset_pynew
, /* @tp_new@ */
436 #define KSZCONVOP(op) \
437 static PyObject *meth__KeySZ_##op(PyObject *me, PyObject *arg) \
440 if (!PyArg_ParseTuple(arg, "Od:" #op, &me, &x)) return (0); \
442 return (PyFloat_FromDouble(y)); \
445 KSZCONVOP(fromschnorr
)
454 /*----- Symmetric encryption ----------------------------------------------*/
456 PyTypeObject
*gccipher_pytype
, *gcipher_pytype
;
458 CONVFUNC(gccipher
, gccipher
*, GCCIPHER_CC
)
459 CONVFUNC(gcipher
, gcipher
*, GCIPHER_C
)
461 PyObject
*gcipher_pywrap(PyObject
*cobj
, gcipher
*c
)
464 if (!cobj
) cobj
= gccipher_pywrap((/*unconst*/ gccipher
*)GC_CLASS(c
));
465 else Py_INCREF(cobj
);
466 g
= PyObject_NEW(gcipher_pyobj
, (PyTypeObject
*)cobj
);
468 return ((PyObject
*)g
);
471 static PyObject
*gcipher_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
473 static const char *const kwlist
[] = { "k", 0 };
477 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
479 if (keysz(sz
, GCCIPHER_CC(ty
)->keysz
) != sz
) VALERR("bad key length");
480 return (gcipher_pywrap((PyObject
*)ty
,
481 GC_INIT(GCCIPHER_CC(ty
), k
, sz
)));
486 PyObject
*gccipher_pywrap(gccipher
*cc
)
488 gccipher_pyobj
*g
= newtype(gccipher_pytype
, 0, cc
->name
);
490 g
->ty
.ht_type
.tp_basicsize
= sizeof(gcipher_pyobj
);
491 g
->ty
.ht_type
.tp_base
= gcipher_pytype
;
492 Py_INCREF(gcipher_pytype
);
493 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
494 Py_TPFLAGS_BASETYPE
|
495 Py_TPFLAGS_HEAPTYPE
);
496 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
497 g
->ty
.ht_type
.tp_free
= 0;
498 g
->ty
.ht_type
.tp_new
= gcipher_pynew
;
499 typeready(&g
->ty
.ht_type
);
500 return ((PyObject
*)g
);
503 static void gcipher_pydealloc(PyObject
*me
)
505 GC_DESTROY(GCIPHER_C(me
));
506 Py_DECREF(me
->ob_type
);
510 static PyObject
*gccget_name(PyObject
*me
, void *hunoz
)
511 { return (PyString_FromString(GCCIPHER_CC(me
)->name
)); }
513 static PyObject
*gccget_keysz(PyObject
*me
, void *hunoz
)
514 { return (keysz_pywrap(GCCIPHER_CC(me
)->keysz
)); }
516 static PyObject
*gccget_blksz(PyObject
*me
, void *hunoz
)
517 { return (PyInt_FromLong(GCCIPHER_CC(me
)->blksz
)); }
519 static PyObject
*gcmeth_encrypt(PyObject
*me
, PyObject
*arg
)
525 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &p
, &sz
)) return (0);
526 rc
= bytestring_pywrap(0, sz
);
527 GC_ENCRYPT(GCIPHER_C(me
), p
, PyString_AS_STRING(rc
), sz
);
531 static PyObject
*gcmeth_enczero(PyObject
*me
, PyObject
*arg
)
537 if (!PyArg_ParseTuple(arg
, "i:enczero", &sz
)) return (0);
538 rc
= bytestring_pywrap(0, sz
);
539 p
= PyString_AS_STRING(rc
);
541 GC_ENCRYPT(GCIPHER_C(me
), p
, p
, sz
);
545 static PyObject
*gcmeth_decrypt(PyObject
*me
, PyObject
*arg
)
551 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &p
, &sz
)) return (0);
552 rc
= bytestring_pywrap(0, sz
);
553 GC_DECRYPT(GCIPHER_C(me
), p
, PyString_AS_STRING(rc
), sz
);
557 static PyObject
*gcmeth_deczero(PyObject
*me
, PyObject
*arg
)
563 if (!PyArg_ParseTuple(arg
, "i:deczero", &sz
)) return (0);
564 rc
= bytestring_pywrap(0, sz
);
565 p
= PyString_AS_STRING(rc
);
567 GC_DECRYPT(GCIPHER_C(me
), p
, p
, sz
);
571 static PyObject
*gcmeth_setiv(PyObject
*me
, PyObject
*arg
)
576 if (!PyArg_ParseTuple(arg
, "s#:setiv", &p
, &sz
)) goto end
;
577 if (!GCIPHER_C(me
)->ops
->setiv
) VALERR("`setiv' not supported");
578 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
579 if (sz
!= GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("bad IV length");
580 GC_SETIV(GCIPHER_C(me
), p
);
586 static PyObject
*gcmeth_bdry(PyObject
*me
, PyObject
*arg
)
588 if (!PyArg_ParseTuple(arg
, ":bdry")) goto end
;
589 if (!GCIPHER_C(me
)->ops
->bdry
) VALERR("`bdry' not supported");
590 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
591 GC_BDRY(GCIPHER_C(me
));
597 static PyGetSetDef gccipher_pygetset
[] = {
598 #define GETSETNAME(op, name) gcc##op##_##name
599 GET (keysz
, "CC.keysz -> acceptable key sizes")
600 GET (blksz
, "CC.blksz -> block size, or zero")
601 GET (name
, "CC.name -> name of this kind of cipher")
606 static PyMethodDef gcipher_pymethods
[] = {
607 #define METHNAME(name) gcmeth_##name
608 METH (encrypt
, "C.encrypt(PT) -> CT")
609 METH (enczero
, "C.enczero(N) -> CT")
610 METH (decrypt
, "C.decrypt(CT) -> PT")
611 METH (deczero
, "C.deczero(N) -> PT")
612 METH (setiv
, "C.setiv(IV)")
613 METH (bdry
, "C.bdry()")
618 static PyTypeObject gccipher_pytype_skel
= {
619 PyObject_HEAD_INIT(0) 0, /* Header */
620 "GCCipher", /* @tp_name@ */
621 sizeof(gccipher_pyobj
), /* @tp_basicsize@ */
622 0, /* @tp_itemsize@ */
624 0, /* @tp_dealloc@ */
626 0, /* @tp_getattr@ */
627 0, /* @tp_setattr@ */
628 0, /* @tp_compare@ */
630 0, /* @tp_as_number@ */
631 0, /* @tp_as_sequence@ */
632 0, /* @tp_as_mapping@ */
636 0, /* @tp_getattro@ */
637 0, /* @tp_setattro@ */
638 0, /* @tp_as_buffer@ */
639 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
643 "Symmetric cipher metaclass.",
645 0, /* @tp_traverse@ */
647 0, /* @tp_richcompare@ */
648 0, /* @tp_weaklistoffset@ */
650 0, /* @tp_iternext@ */
651 0, /* @tp_methods@ */
652 0, /* @tp_members@ */
653 gccipher_pygetset
, /* @tp_getset@ */
656 0, /* @tp_descr_get@ */
657 0, /* @tp_descr_set@ */
658 0, /* @tp_dictoffset@ */
660 PyType_GenericAlloc
, /* @tp_alloc@ */
661 abstract_pynew
, /* @tp_new@ */
666 static PyTypeObject gcipher_pytype_skel
= {
667 PyObject_HEAD_INIT(0) 0, /* Header */
668 "GCipher", /* @tp_name@ */
669 sizeof(gcipher_pyobj
), /* @tp_basicsize@ */
670 0, /* @tp_itemsize@ */
672 gcipher_pydealloc
, /* @tp_dealloc@ */
674 0, /* @tp_getattr@ */
675 0, /* @tp_setattr@ */
676 0, /* @tp_compare@ */
678 0, /* @tp_as_number@ */
679 0, /* @tp_as_sequence@ */
680 0, /* @tp_as_mapping@ */
684 0, /* @tp_getattro@ */
685 0, /* @tp_setattro@ */
686 0, /* @tp_as_buffer@ */
687 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
691 "Symmetric cipher, abstract base class.",
693 0, /* @tp_traverse@ */
695 0, /* @tp_richcompare@ */
696 0, /* @tp_weaklistoffset@ */
698 0, /* @tp_iternext@ */
699 gcipher_pymethods
, /* @tp_methods@ */
700 0, /* @tp_members@ */
704 0, /* @tp_descr_get@ */
705 0, /* @tp_descr_set@ */
706 0, /* @tp_dictoffset@ */
708 PyType_GenericAlloc
, /* @tp_alloc@ */
709 abstract_pynew
, /* @tp_new@ */
714 /*----- Authenticated encryption ------------------------------------------*/
716 PyTypeObject
*gcaead_pytype
, *gaeadkey_pytype
;
717 PyTypeObject
*gcaeadaad_pytype
, *gaeadaad_pytype
;
718 PyTypeObject
*gcaeadenc_pytype
, *gaeadenc_pytype
;
719 PyTypeObject
*gcaeaddec_pytype
, *gaeaddec_pytype
;
721 CONVFUNC(gcaead
, gcaead
*, GCAEAD_AEC
)
722 CONVFUNC(gaeadkey
, gaead_key
*, GAEADKEY_K
)
724 PyObject
*gaeadkey_pywrap(PyObject
*cobj
, gaead_key
*k
)
728 if (!cobj
) cobj
= gcaead_pywrap((/*unconst*/ gcaead
*)GAEAD_CLASS(k
));
729 else Py_INCREF(cobj
);
730 gk
= PyObject_NEW(gaeadkey_pyobj
, (PyTypeObject
*)cobj
);
732 return ((PyObject
*)gk
);
735 static PyObject
*gaeadkey_pynew(PyTypeObject
*ty
,
736 PyObject
*arg
, PyObject
*kw
)
738 static const char *const kwlist
[] = { "k", 0 };
742 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
744 if (keysz(sz
, GCAEAD_AEC(ty
)->keysz
) != sz
) VALERR("bad key length");
745 return (gaeadkey_pywrap((PyObject
*)ty
,
746 GAEAD_KEY(GCAEAD_AEC(ty
), k
, sz
)));
751 PyObject
*gcaead_pywrap(gcaead
*aec
)
754 gcaeadaad_pyobj
*gca
;
755 gcaeadenc_pyobj
*gce
;
756 gcaeaddec_pyobj
*gcd
;
758 #define MKTYPE(obj, thing, newfn, namefmt) do { \
759 (obj) = newtype(gcaead_pytype, 0, 0); \
760 (obj)->ty.ht_name = PyString_FromFormat(namefmt, aec->name); \
761 (obj)->ty.ht_type.tp_name = PyString_AS_STRING((obj)->ty.ht_name); \
762 (obj)->ty.ht_type.tp_basicsize = sizeof(gaead##thing##_pyobj); \
763 (obj)->ty.ht_type.tp_base = gaead##thing##_pytype; \
764 Py_INCREF(gaead##thing##_pytype); \
765 (obj)->ty.ht_type.tp_flags = \
766 (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE); \
767 (obj)->ty.ht_type.tp_alloc = PyType_GenericAlloc; \
768 (obj)->ty.ht_type.tp_free = 0; \
769 (obj)->ty.ht_type.tp_new = newfn; \
770 typeready(&(obj)->ty.ht_type); \
773 MKTYPE(gck
, key
, gaeadkey_pynew
, "%s(key)");
774 MKTYPE(gca
, aad
, abstract_pynew
, "%s(aad-hash)");
775 MKTYPE(gce
, enc
, abstract_pynew
, "%s(encrypt)");
776 MKTYPE(gcd
, dec
, abstract_pynew
, "%s(decrypt)");
780 gck
->aec
= aec
; gck
->aad
= gca
; gck
->enc
= gce
; gck
->dec
= gcd
;
781 gca
->key
= gce
->key
= gcd
->key
= gck
;
782 return ((PyObject
*)gck
);
785 static void gaeadkey_pydealloc(PyObject
*me
)
786 { GAEAD_DESTROY(GAEADKEY_K(me
)); Py_DECREF(me
->ob_type
); FREEOBJ(me
); }
788 static PyObject
*gcaeget_name(PyObject
*me
, void *hunoz
)
789 { return (PyString_FromString(GCAEAD_AEC(me
)->name
)); }
791 static PyObject
*gcaeget_keysz(PyObject
*me
, void *hunoz
)
792 { return (keysz_pywrap(GCAEAD_AEC(me
)->keysz
)); }
794 static PyObject
*gcaeget_noncesz(PyObject
*me
, void *hunoz
)
795 { return (keysz_pywrap(GCAEAD_AEC(me
)->noncesz
)); }
797 static PyObject
*gcaeget_tagsz(PyObject
*me
, void *hunoz
)
798 { return (keysz_pywrap(GCAEAD_AEC(me
)->tagsz
)); }
800 static PyObject
*gcaeget_blksz(PyObject
*me
, void *hunoz
)
801 { return (PyInt_FromLong(GCAEAD_AEC(me
)->blksz
)); }
803 static PyObject
*gcaeget_bufsz(PyObject
*me
, void *hunoz
)
804 { return (PyInt_FromLong(GCAEAD_AEC(me
)->bufsz
)); }
806 static PyObject
*gcaeget_ohd(PyObject
*me
, void *hunoz
)
807 { return (PyInt_FromLong(GCAEAD_AEC(me
)->ohd
)); }
809 static PyObject
*gcaeget_flags(PyObject
*me
, void *hunoz
)
810 { return (PyInt_FromLong(GCAEAD_AEC(me
)->f
)); }
812 static PyGetSetDef gcaead_pygetset
[] = {
813 #define GETSETNAME(op, name) gcae##op##_##name
814 GET (keysz
, "AEC.keysz -> acceptable key sizes")
815 GET (noncesz
, "AEC.noncesz -> acceptable nonce sizes")
816 GET (tagsz
, "AEC.tagsz -> acceptable tag sizes")
817 GET (blksz
, "AEC.blksz -> block size, or zero")
818 GET (bufsz
, "AEC.bufsz -> amount of data buffered internally")
819 GET (ohd
, "AEC.ohd -> maximum encryption overhead")
820 GET (name
, "AEC.name -> name of this kind of AEAD scheme")
821 GET (flags
, "AEC.flags -> mask of `AEADF_...' flags")
826 static PyObject
*gaekmeth_aad(PyObject
*me
, PyObject
*arg
)
828 const gaead_key
*k
= GAEADKEY_K(me
);
831 if (!PyArg_ParseTuple(arg
, ":aad")) return (0);
832 if (k
->ops
->c
->f
&AEADF_AADNDEP
)
833 VALERR("aad must be associated with enc/dec op");
834 rc
= gaeadaad_pywrap((PyObject
*)GCAEAD_AAD(me
->ob_type
),
840 static int check_aead_encdec(const gcaead
*aec
, unsigned *f_out
, size_t nsz
,
841 PyObject
*hszobj
, size_t *hsz_out
,
842 PyObject
*mszobj
, size_t *msz_out
,
843 PyObject
*tszobj
, size_t *tsz_out
)
845 unsigned f
= 0, miss
;
848 if (hszobj
!= Py_None
)
849 { f
|= AEADF_PCHSZ
; if (!convszt(hszobj
, hsz_out
)) goto end
; }
850 if (mszobj
!= Py_None
)
851 { f
|= AEADF_PCMSZ
; if (!convszt(mszobj
, msz_out
)) goto end
; }
852 if (tszobj
!= Py_None
)
853 { f
|= AEADF_PCTSZ
; if (!convszt(tszobj
, tsz_out
)) goto end
; }
855 if (miss
&AEADF_PCHSZ
) VALERR("header length precommitment required");
856 if (miss
&AEADF_PCMSZ
) VALERR("message length precommitment required");
857 if (miss
&AEADF_PCTSZ
) VALERR("tag length precommitment required");
858 if (keysz(nsz
, aec
->noncesz
) != nsz
) VALERR("bad nonce length");
859 if (tszobj
!= Py_None
&& keysz(*tsz_out
, aec
->tagsz
) != *tsz_out
)
860 VALERR("bad tag length");
861 *f_out
= f
| aec
->f
; rc
= 0;
866 static PyObject
*gaekmeth_enc(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
868 static const char *const kwlist
[] = { "nonce", "hsz", "msz", "tsz", 0 };
869 const gaead_key
*k
= GAEADKEY_K(me
);
872 char *n
; Py_ssize_t nsz
;
873 PyObject
*hszobj
= Py_None
, *mszobj
= Py_None
, *tszobj
= Py_None
;
874 size_t hsz
= 0, msz
= 0, tsz
= 0;
877 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
878 &n
, &nsz
, &hszobj
, &mszobj
, &tszobj
))
880 if (check_aead_encdec(k
->ops
->c
, &f
, nsz
,
881 hszobj
, &hsz
, mszobj
, &msz
, tszobj
, &tsz
))
883 e
= GAEAD_ENC(GAEADKEY_K(me
), n
, nsz
, hsz
, msz
, tsz
);
884 if (!e
) VALERR("bad aead parameter combination");
885 rc
= gaeadenc_pywrap((PyObject
*)GCAEAD_ENC(me
->ob_type
),
886 e
, f
, hsz
, msz
, tsz
);
891 static PyObject
*gaekmeth_dec(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
893 static const char *const kwlist
[] = { "nonce", "hsz", "csz", "tsz", 0 };
894 const gaead_key
*k
= GAEADKEY_K(me
);
897 char *n
; Py_ssize_t nsz
;
898 PyObject
*hszobj
= Py_None
, *cszobj
= Py_None
, *tszobj
= Py_None
;
899 size_t hsz
= 0, csz
= 0, tsz
= 0;
902 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:dec", KWLIST
,
903 &n
, &nsz
, &hszobj
, &cszobj
, &tszobj
))
905 if (check_aead_encdec(k
->ops
->c
, &f
, nsz
,
906 hszobj
, &hsz
, cszobj
, &csz
, tszobj
, &tsz
))
908 d
= GAEAD_DEC(GAEADKEY_K(me
), n
, nsz
, hsz
, csz
, tsz
);
909 if (!d
) VALERR("bad aead parameter combination");
910 rc
= gaeaddec_pywrap((PyObject
*)GCAEAD_DEC(me
->ob_type
),
911 d
, f
, hsz
, csz
, tsz
);
916 static PyMethodDef gaeadkey_pymethods
[] = {
917 #define METHNAME(name) gaekmeth_##name
918 METH (aad
, "KEY.aad() -> AAD")
919 KWMETH(enc
, "KEY.enc(NONCE, [hsz], [msz], [tsz]) -> ENC")
920 KWMETH(dec
, "KEY.dec(NONCE, [hsz], [csz], [tsz]) -> DEC")
925 PyObject
*gaeadaad_pywrap(PyObject
*cobj
, gaead_aad
*a
,
926 unsigned f
, size_t hsz
)
930 assert(cobj
); Py_INCREF(cobj
);
931 ga
= PyObject_NEW(gaeadaad_pyobj
, (PyTypeObject
*)cobj
);
932 ga
->a
= a
; ga
->f
= f
; ga
->hsz
= hsz
; ga
->hlen
= 0;
933 return ((PyObject
*)ga
);
936 static void gaeadaad_pydealloc(PyObject
*me
)
938 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
940 if (ga
->a
) GAEAD_DESTROY(ga
->a
);
941 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
944 static int gaea_check(PyObject
*me
)
946 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
949 if ((ga
->f
&AEADF_DEAD
) || !ga
->a
) VALERR("aad object no longer active");
955 static void gaea_invalidate(gaeadaad_pyobj
*ga
)
956 { if (ga
) ga
->f
|= AEADF_DEAD
; }
958 static void gaea_sever(gaeadaad_pyobj
**ga_inout
)
960 gaeadaad_pyobj
*ga
= *ga_inout
;
961 if (ga
) { ga
->f
|= AEADF_DEAD
; ga
->a
= 0; Py_DECREF(ga
); *ga_inout
= 0; }
964 static PyObject
*gaeaget_hsz(PyObject
*me
, void *hunoz
)
966 if (gaea_check(me
)) return (0);
967 else if (GAEADAAD_F(me
)&AEADF_PCHSZ
) return getulong(GAEADAAD_HSZ(me
));
971 static PyObject
*gaeaget_hlen(PyObject
*me
, void *hunoz
)
972 { return (gaea_check(me
) ?
0 : getulong(GAEADAAD_HLEN(me
))); }
974 static PyGetSetDef gaeadaad_pygetset
[] = {
975 #define GETSETNAME(op, name) gaea##op##_##name
976 GET (hsz
, "AAD.hsz -> precommitted header length or `None'")
977 GET (hlen
, "AAD.hlen -> header length so far")
982 static PyObject
*gaeameth_copy(PyObject
*me
, PyObject
*arg
)
986 if (!PyArg_ParseTuple(arg
, ":copy")) goto end
;
987 if (gaea_check(me
)) goto end
;
988 if (GAEADAAD_F(me
)&AEADF_AADNDEP
)
989 VALERR("can't duplicate nonce-dependent aad");
990 rc
= gaeadaad_pywrap((PyObject
*)me
->ob_type
,
991 GAEAD_DUP(GAEADAAD_A(me
)), 0, 0);
992 GAEADAAD_HLEN(rc
) = GAEADAAD_HLEN(me
);
997 static int gaeadaad_hash(PyObject
*me
, const void *h
, size_t hsz
)
999 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1002 if (gaea_check(me
)) goto end
;
1003 if ((ga
->f
&AEADF_NOAAD
) && hsz
)
1004 VALERR("header data not permitted");
1005 if ((ga
->f
&AEADF_PCHSZ
) && hsz
> ga
->hsz
- ga
->hlen
)
1006 VALERR("too large for precommitted header length");
1007 GAEAD_HASH(ga
->a
, h
, hsz
); ga
->hlen
+= hsz
;
1014 static PyObject
*gaeameth_hash(PyObject
*me
, PyObject
*arg
)
1016 char *h
; Py_ssize_t hsz
;
1018 if (!PyArg_ParseTuple(arg
, "s#:hash", &h
, &hsz
)) return (0);
1019 if (gaeadaad_hash(me
, h
, hsz
)) return (0);
1023 #define GAEAMETH_HASHU_(n, W, w) \
1024 static PyObject *gaeameth_hashu##w(PyObject *me, PyObject *arg) \
1026 uint##n x; octet b[SZ_##W]; \
1027 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
1028 STORE##W(b, x); if (gaeadaad_hash(me, b, sizeof(b))) return (0); \
1031 DOUINTCONV(GAEAMETH_HASHU_
)
1033 #define GAEAMETH_HASHBUF_(n, W, w) \
1034 static PyObject *gaeameth_hashbuf##w(PyObject *me, PyObject *arg) \
1036 char *p; Py_ssize_t sz; octet b[SZ_##W]; \
1037 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1038 if (sz > MASK##n) TYERR("string too long"); \
1039 STORE##W(b, sz); if (gaeadaad_hash(me, b, sizeof(b))) goto end; \
1040 if (gaeadaad_hash(me, p, sz)) goto end; \
1045 DOUINTCONV(GAEAMETH_HASHBUF_
)
1047 static PyObject
*gaeameth_hashstrz(PyObject
*me
, PyObject
*arg
)
1050 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
1051 if (gaeadaad_hash(me
, p
, strlen(p
) + 1)) return (0);
1055 static PyMethodDef gaeadaad_pymethods
[] = {
1056 #define METHNAME(name) gaeameth_##name
1057 METH (copy
, "AAD.copy() -> AAD'")
1058 METH (hash
, "AAD.hash(H)")
1059 #define METHU_(n, W, w) METH(hashu##w, "AAD.hashu" #w "(WORD)")
1062 #define METHBUF_(n, W, w) METH(hashbuf##w, "AAD.hashbuf" #w "(BYTES)")
1063 DOUINTCONV(METHBUF_
)
1065 METH (hashstrz
, "AAD.hashstrz(STRING)")
1070 PyObject
*gaeadenc_pywrap(PyObject
*cobj
, gaead_enc
*e
, unsigned f
,
1071 size_t hsz
, size_t msz
, size_t tsz
)
1075 assert(cobj
); Py_INCREF(cobj
);
1076 ge
= PyObject_NEW(gaeadenc_pyobj
, (PyTypeObject
*)cobj
);
1077 ge
->e
= e
; ge
->f
= f
; ge
->hsz
= hsz
; ge
->msz
= msz
; ge
->tsz
= tsz
;
1078 ge
->aad
= 0; ge
->mlen
= 0;
1079 return ((PyObject
*)ge
);
1082 static void gaeadenc_pydealloc(PyObject
*me
)
1084 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1086 gaea_sever(&ge
->aad
); GAEAD_DESTROY(ge
->e
);
1087 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
1090 static PyObject
*gaeeget_hsz(PyObject
*me
, void *hunoz
)
1092 if (GAEADENC_F(me
)&AEADF_PCHSZ
) return getulong(GAEADENC_HSZ(me
));
1096 static PyObject
*gaeeget_msz(PyObject
*me
, void *hunoz
)
1098 if (GAEADENC_F(me
)&AEADF_PCMSZ
) return getulong(GAEADENC_MSZ(me
));
1102 static PyObject
*gaeeget_tsz(PyObject
*me
, void *hunoz
)
1104 if (GAEADENC_F(me
)&AEADF_PCTSZ
) return getulong(GAEADENC_TSZ(me
));
1108 static PyObject
*gaeeget_mlen(PyObject
*me
, void *hunoz
)
1109 { return getulong(GAEADENC_MLEN(me
)); }
1111 static PyGetSetDef gaeadenc_pygetset
[] = {
1112 #define GETSETNAME(op, name) gaee##op##_##name
1113 GET (hsz
, "ENC.hsz -> precommitted header length or `None'")
1114 GET (msz
, "ENC.msz -> precommitted message length or `None'")
1115 GET (tsz
, "ENC.tsz -> precommitted tag length or `None'")
1116 GET (mlen
, "ENC.mlen -> message length so far")
1121 static PyObject
*gaeemeth_aad(PyObject
*me
, PyObject
*arg
)
1123 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1126 if (!PyArg_ParseTuple(arg
, ":aad")) return (0);
1127 if (!(ge
->f
&AEADF_AADNDEP
))
1128 rc
= gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(ge
->ob_type
)->aad
,
1129 GAEAD_AAD(ge
->e
), 0, 0);
1131 if ((ge
->f
&AEADF_AADFIRST
) && ge
->mlen
)
1132 VALERR("too late for aad");
1134 ge
->aad
= (gaeadaad_pyobj
*)
1135 gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(ge
->ob_type
)->aad
,
1136 GAEAD_AAD(ge
->e
), ge
->f
&(AEADF_PCHSZ
| AEADF_NOAAD
),
1139 rc
= (PyObject
*)ge
->aad
;
1145 static PyObject
*gaeemeth_reinit(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1147 static const char *const kwlist
[] = { "nonce", "hsz", "msz", "tsz", 0 };
1148 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1149 char *n
; Py_ssize_t nsz
;
1150 PyObject
*hszobj
= Py_None
, *mszobj
= Py_None
, *tszobj
= Py_None
;
1151 size_t hsz
= 0, msz
= 0, tsz
= 0;
1154 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
1155 &n
, &nsz
, &hszobj
, &mszobj
, &tszobj
))
1157 if (check_aead_encdec(ge
->e
->ops
->c
, &f
, nsz
,
1158 hszobj
, &hsz
, mszobj
, &msz
, tszobj
, &tsz
))
1160 if (GAEAD_REINIT(ge
->e
, n
, nsz
, hsz
, msz
, tsz
))
1161 VALERR("bad aead parameter combination");
1162 gaea_sever(&ge
->aad
);
1163 ge
->f
= f
; ge
->hsz
= hsz
; ge
->msz
= msz
; ge
->tsz
= tsz
;
1168 static PyObject
*gaeemeth_encrypt(PyObject
*me
, PyObject
*arg
)
1170 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1171 char *m
; Py_ssize_t msz
;
1172 char *c
= 0; size_t csz
; buf b
;
1176 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &m
, &msz
)) goto end
;
1177 if (ge
->f
&AEADF_AADFIRST
) {
1178 if ((ge
->f
&AEADF_PCHSZ
) && (ge
->aad ? ge
->aad
->hlen
: 0) != ge
->hsz
)
1179 VALERR("header doesn't match precommitted length");
1180 gaea_invalidate(ge
->aad
);
1182 if ((ge
->f
&AEADF_PCMSZ
) && msz
> ge
->msz
- ge
->mlen
)
1183 VALERR("too large for precommitted message length");
1184 csz
= msz
+ ge
->e
->ops
->c
->bufsz
; c
= xmalloc(csz
); buf_init(&b
, c
, csz
);
1185 err
= GAEAD_ENCRYPT(ge
->e
, m
, msz
, &b
); assert(!err
); (void)err
;
1186 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
); ge
->mlen
+= msz
;
1192 static PyObject
*gaeemeth_done(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1194 static const char *const kwlist
[] = { "tsz", "aad", 0 };
1195 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1196 PyObject
*aad
= Py_None
;
1197 char *c
= 0; size_t csz
; buf b
;
1198 PyObject
*tszobj
= Py_None
; PyObject
*tag
; size_t tsz
;
1202 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|OO:done", KWLIST
,
1205 if (tszobj
!= Py_None
&& !convszt(tszobj
, &tsz
)) goto end
;
1206 if (aad
!= Py_None
&&
1207 !PyObject_TypeCheck(aad
,
1208 (PyTypeObject
*)GCAEADENC_KEY(me
->ob_type
)->aad
))
1209 TYERR("wanted aad");
1210 if ((ge
->f
&AEADF_AADNDEP
) && aad
!= Py_None
&& aad
!= (PyObject
*)ge
->aad
)
1211 VALERR("mismatched aad");
1212 if ((ge
->f
&AEADF_PCHSZ
) &&
1213 (aad
== Py_None ?
0 : GAEADAAD_HLEN(aad
)) != ge
->hsz
)
1214 VALERR("header doesn't match precommitted length");
1215 if ((ge
->f
&AEADF_PCMSZ
) && ge
->mlen
!= ge
->msz
)
1216 VALERR("message doesn't match precommitted length");
1217 if (tszobj
== Py_None
) {
1218 if (ge
->f
&AEADF_PCTSZ
) tsz
= ge
->tsz
;
1219 else tsz
= keysz(0, ge
->e
->ops
->c
->tagsz
);
1221 if ((ge
->f
&AEADF_PCTSZ
) && tsz
!= ge
->tsz
)
1222 VALERR("tag length doesn't match precommitted value");
1223 if (keysz(tsz
, ge
->e
->ops
->c
->tagsz
) != tsz
) VALERR("bad tag length");
1225 csz
= ge
->e
->ops
->c
->bufsz
; c
= xmalloc(csz
); buf_init(&b
, c
, csz
);
1226 tag
= bytestring_pywrap(0, tsz
);
1227 err
= GAEAD_DONE(ge
->e
, aad
== Py_None ?
0 : GAEADAAD_A(aad
), &b
,
1228 PyString_AS_STRING(tag
), tsz
);
1229 assert(!err
); (void)err
;
1230 buf_flip(&b
); rc
= Py_BuildValue("NN", bytestring_pywrapbuf(&b
), tag
);
1236 static PyMethodDef gaeadenc_pymethods
[] = {
1237 #define METHNAME(name) gaeemeth_##name
1238 METH (aad
, "ENC.aad() -> AAD")
1239 KWMETH(reinit
, "ENC.reinit(NONCE, [hsz], [msz], [tsz])")
1240 METH (encrypt
, "ENC.encrypt(MSG) -> CT")
1241 KWMETH(done
, "ENC.done([tsz], [aad]) -> CT, TAG")
1246 PyObject
*gaeaddec_pywrap(PyObject
*cobj
, gaead_dec
*d
, unsigned f
,
1247 size_t hsz
, size_t csz
, size_t tsz
)
1250 assert(cobj
); Py_INCREF(cobj
);
1251 gd
= PyObject_NEW(gaeaddec_pyobj
, (PyTypeObject
*)cobj
);
1252 gd
->d
= d
; gd
->f
= f
; gd
->hsz
= hsz
; gd
->csz
= csz
; gd
->tsz
= tsz
;
1253 gd
->aad
= 0; gd
->clen
= 0;
1254 return ((PyObject
*)gd
);
1257 static void gaeaddec_pydealloc(PyObject
*me
)
1259 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1261 gaea_sever(&gd
->aad
); GAEAD_DESTROY(GAEADDEC_D(me
));
1262 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
1265 static PyObject
*gaedget_hsz(PyObject
*me
, void *hunoz
)
1267 if (GAEADDEC_F(me
)&AEADF_PCHSZ
) return getulong(GAEADDEC_HSZ(me
));
1271 static PyObject
*gaedget_csz(PyObject
*me
, void *hunoz
)
1273 if (GAEADDEC_F(me
)&AEADF_PCMSZ
) return getulong(GAEADDEC_CSZ(me
));
1277 static PyObject
*gaedget_tsz(PyObject
*me
, void *hunoz
)
1279 if (GAEADDEC_F(me
)&AEADF_PCTSZ
) return getulong(GAEADDEC_TSZ(me
));
1283 static PyObject
*gaedget_clen(PyObject
*me
, void *hunoz
)
1284 { return getulong(GAEADDEC_CLEN(me
)); }
1286 static PyGetSetDef gaeaddec_pygetset
[] = {
1287 #define GETSETNAME(op, name) gaed##op##_##name
1288 GET (hsz
, "DEC.hsz -> precommitted header length or `None'")
1289 GET (csz
, "DEC.csz -> precommitted ciphertext length or `None'")
1290 GET (tsz
, "DEC.tsz -> precommitted tag length or `None'")
1291 GET (clen
, "DEC.clen -> ciphertext length so far")
1296 static PyObject
*gaedmeth_aad(PyObject
*me
, PyObject
*arg
)
1298 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1300 if (!PyArg_ParseTuple(arg
, ":aad")) return (0);
1301 if (!(gd
->f
&AEADF_AADNDEP
))
1302 return (gaeadaad_pywrap((PyObject
*)GCAEADDEC_KEY(gd
->ob_type
)->aad
,
1303 GAEAD_AAD(gd
->d
), 0, 0));
1306 gd
->aad
= (gaeadaad_pyobj
*)
1307 gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(gd
->ob_type
)->aad
,
1308 GAEAD_AAD(gd
->d
), gd
->f
&(AEADF_PCHSZ
| AEADF_NOAAD
),
1311 return ((PyObject
*)gd
->aad
);
1315 static PyObject
*gaedmeth_reinit(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1317 static const char *const kwlist
[] = { "nonce", "hsz", "csz", "tsz", 0 };
1318 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1319 char *n
; Py_ssize_t nsz
;
1320 PyObject
*hszobj
= Py_None
, *cszobj
= Py_None
, *tszobj
= Py_None
;
1321 size_t hsz
= 0, csz
= 0, tsz
= 0;
1324 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
1325 &n
, &nsz
, &hszobj
, &cszobj
, &tszobj
))
1327 if (check_aead_encdec(gd
->d
->ops
->c
, &f
, nsz
,
1328 hszobj
, &hsz
, cszobj
, &csz
, tszobj
, &tsz
))
1330 if (GAEAD_REINIT(gd
->d
, n
, nsz
, hsz
, csz
, tsz
))
1331 VALERR("bad aead parameter combination");
1332 gaea_sever(&gd
->aad
);
1333 gd
->f
= f
; gd
->hsz
= hsz
; gd
->csz
= csz
; gd
->tsz
= tsz
;
1338 static PyObject
*gaedmeth_decrypt(PyObject
*me
, PyObject
*arg
)
1340 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1341 char *c
; Py_ssize_t csz
;
1342 char *m
= 0; size_t msz
; buf b
;
1346 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &c
, &csz
)) goto end
;
1347 if (gd
->f
&AEADF_AADFIRST
) {
1348 if ((gd
->f
&AEADF_PCHSZ
) && (gd
->aad ? gd
->aad
->hlen
: 0) != gd
->hsz
)
1349 VALERR("header doesn't match precommitted length");
1350 gaea_invalidate(gd
->aad
);
1352 if ((gd
->f
&AEADF_PCMSZ
) && csz
> gd
->csz
- gd
->clen
)
1353 VALERR("too large for precommitted message length");
1354 msz
= csz
+ gd
->d
->ops
->c
->bufsz
; m
= xmalloc(msz
); buf_init(&b
, m
, msz
);
1355 err
= GAEAD_DECRYPT(gd
->d
, c
, csz
, &b
); assert(!err
); (void)err
;
1356 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
); gd
->clen
+= csz
;
1362 static PyObject
*gaedmeth_done(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1364 static const char *const kwlist
[] = { "tag", "aad", 0 };
1365 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1366 PyObject
*aad
= Py_None
;
1367 char *t
; Py_ssize_t tsz
;
1368 char *m
= 0; size_t msz
; buf b
;
1372 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|O:done", KWLIST
,
1375 if (aad
!= Py_None
&&
1376 !PyObject_TypeCheck(aad
,
1377 (PyTypeObject
*)GCAEADENC_KEY(me
->ob_type
)->aad
))
1378 TYERR("wanted aad");
1379 if ((gd
->f
&AEADF_AADNDEP
) && aad
!= Py_None
&& aad
!= (PyObject
*)gd
->aad
)
1380 VALERR("mismatched aad");
1381 if ((gd
->f
&AEADF_PCHSZ
) &&
1382 (aad
== Py_None ?
0 : GAEADAAD_HLEN(aad
)) != gd
->hsz
)
1383 VALERR("header doesn't match precommitted length");
1384 if ((gd
->f
&AEADF_PCMSZ
) && gd
->clen
!= gd
->csz
)
1385 VALERR("message doesn't match precommitted length");
1386 if ((gd
->f
&AEADF_PCTSZ
) && tsz
!= gd
->tsz
)
1387 VALERR("tag length doesn't match precommitted value");
1388 if (keysz(tsz
, gd
->d
->ops
->c
->tagsz
) != tsz
) VALERR("bad tag length");
1389 msz
= gd
->d
->ops
->c
->bufsz
; m
= xmalloc(msz
); buf_init(&b
, m
, msz
);
1390 err
= GAEAD_DONE(gd
->d
, aad
== Py_None ?
0 : GAEADAAD_A(aad
), &b
, t
, tsz
);
1392 if (!err
) VALERR("decryption failed");
1393 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
);
1399 static PyMethodDef gaeaddec_pymethods
[] = {
1400 #define METHNAME(name) gaedmeth_##name
1401 METH (aad
, "DEC.aad() -> AAD")
1402 KWMETH(reinit
, "DEC.reinit(NONCE, [hsz], [csz], [tsz])")
1403 METH (decrypt
, "DEC.decrypt(CT) -> MSG")
1404 KWMETH(done
, "DEC.done(TAG, [aad]) -> MSG | None")
1409 static PyTypeObject gcaead_pytype_skel
= {
1410 PyObject_HEAD_INIT(0) 0, /* Header */
1411 "GCAEAD", /* @tp_name@ */
1412 sizeof(gcaead_pyobj
), /* @tp_basicsize@ */
1413 0, /* @tp_itemsize@ */
1415 0, /* @tp_dealloc@ */
1417 0, /* @tp_getattr@ */
1418 0, /* @tp_setattr@ */
1419 0, /* @tp_compare@ */
1421 0, /* @tp_as_number@ */
1422 0, /* @tp_as_sequence@ */
1423 0, /* @tp_as_mapping@ */
1427 0, /* @tp_getattro@ */
1428 0, /* @tp_setattro@ */
1429 0, /* @tp_as_buffer@ */
1430 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1431 Py_TPFLAGS_BASETYPE
,
1434 "Authenticated encryption (key) metaclass.",
1436 0, /* @tp_traverse@ */
1438 0, /* @tp_richcompare@ */
1439 0, /* @tp_weaklistoffset@ */
1441 0, /* @tp_iternext@ */
1442 0, /* @tp_methods@ */
1443 0, /* @tp_members@ */
1444 gcaead_pygetset
, /* @tp_getset@ */
1447 0, /* @tp_descr_get@ */
1448 0, /* @tp_descr_set@ */
1449 0, /* @tp_dictoffset@ */
1451 PyType_GenericAlloc
, /* @tp_alloc@ */
1452 abstract_pynew
, /* @tp_new@ */
1457 static PyTypeObject gaeadkey_pytype_skel
= {
1458 PyObject_HEAD_INIT(0) 0, /* Header */
1459 "GAEKey", /* @tp_name@ */
1460 sizeof(gaeadkey_pyobj
), /* @tp_basicsize@ */
1461 0, /* @tp_itemsize@ */
1463 gaeadkey_pydealloc
, /* @tp_dealloc@ */
1465 0, /* @tp_getattr@ */
1466 0, /* @tp_setattr@ */
1467 0, /* @tp_compare@ */
1469 0, /* @tp_as_number@ */
1470 0, /* @tp_as_sequence@ */
1471 0, /* @tp_as_mapping@ */
1475 0, /* @tp_getattro@ */
1476 0, /* @tp_setattro@ */
1477 0, /* @tp_as_buffer@ */
1478 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1479 Py_TPFLAGS_BASETYPE
,
1482 "Authenticated encryption key.",
1484 0, /* @tp_traverse@ */
1486 0, /* @tp_richcompare@ */
1487 0, /* @tp_weaklistoffset@ */
1489 0, /* @tp_iternext@ */
1490 gaeadkey_pymethods
, /* @tp_methods@ */
1491 0, /* @tp_members@ */
1492 0, /* @tp_getset@ */
1495 0, /* @tp_descr_get@ */
1496 0, /* @tp_descr_set@ */
1497 0, /* @tp_dictoffset@ */
1499 PyType_GenericAlloc
, /* @tp_alloc@ */
1500 abstract_pynew
, /* @tp_new@ */
1505 static PyTypeObject gcaeadaad_pytype_skel
= {
1506 PyObject_HEAD_INIT(0) 0, /* Header */
1507 "GAEAADClass", /* @tp_name@ */
1508 sizeof(gcaeadaad_pyobj
), /* @tp_basicsize@ */
1509 0, /* @tp_itemsize@ */
1511 0, /* @tp_dealloc@ */
1513 0, /* @tp_getattr@ */
1514 0, /* @tp_setattr@ */
1515 0, /* @tp_compare@ */
1517 0, /* @tp_as_number@ */
1518 0, /* @tp_as_sequence@ */
1519 0, /* @tp_as_mapping@ */
1523 0, /* @tp_getattro@ */
1524 0, /* @tp_setattro@ */
1525 0, /* @tp_as_buffer@ */
1526 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1527 Py_TPFLAGS_BASETYPE
,
1530 "Authenticated encryption additional-data hash metaclass.",
1532 0, /* @tp_traverse@ */
1534 0, /* @tp_richcompare@ */
1535 0, /* @tp_weaklistoffset@ */
1537 0, /* @tp_iternext@ */
1538 0, /* @tp_methods@ */
1539 0, /* @tp_members@ */
1540 0, /* @tp_getset@ */
1543 0, /* @tp_descr_get@ */
1544 0, /* @tp_descr_set@ */
1545 0, /* @tp_dictoffset@ */
1547 PyType_GenericAlloc
, /* @tp_alloc@ */
1548 abstract_pynew
, /* @tp_new@ */
1553 static PyTypeObject gaeadaad_pytype_skel
= {
1554 PyObject_HEAD_INIT(0) 0, /* Header */
1555 "GAEAAD", /* @tp_name@ */
1556 sizeof(gaeadaad_pyobj
), /* @tp_basicsize@ */
1557 0, /* @tp_itemsize@ */
1559 gaeadaad_pydealloc
, /* @tp_dealloc@ */
1561 0, /* @tp_getattr@ */
1562 0, /* @tp_setattr@ */
1563 0, /* @tp_compare@ */
1565 0, /* @tp_as_number@ */
1566 0, /* @tp_as_sequence@ */
1567 0, /* @tp_as_mapping@ */
1571 0, /* @tp_getattro@ */
1572 0, /* @tp_setattro@ */
1573 0, /* @tp_as_buffer@ */
1574 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1575 Py_TPFLAGS_BASETYPE
,
1578 "Authenticated encryption AAD hash.",
1580 0, /* @tp_traverse@ */
1582 0, /* @tp_richcompare@ */
1583 0, /* @tp_weaklistoffset@ */
1585 0, /* @tp_iternext@ */
1586 gaeadaad_pymethods
, /* @tp_methods@ */
1587 0, /* @tp_members@ */
1588 gaeadaad_pygetset
, /* @tp_getset@ */
1591 0, /* @tp_descr_get@ */
1592 0, /* @tp_descr_set@ */
1593 0, /* @tp_dictoffset@ */
1595 PyType_GenericAlloc
, /* @tp_alloc@ */
1596 abstract_pynew
, /* @tp_new@ */
1601 static PyTypeObject gcaeadenc_pytype_skel
= {
1602 PyObject_HEAD_INIT(0) 0, /* Header */
1603 "GAEEncClass", /* @tp_name@ */
1604 sizeof(gcaeadenc_pyobj
), /* @tp_basicsize@ */
1605 0, /* @tp_itemsize@ */
1607 0, /* @tp_dealloc@ */
1609 0, /* @tp_getattr@ */
1610 0, /* @tp_setattr@ */
1611 0, /* @tp_compare@ */
1613 0, /* @tp_as_number@ */
1614 0, /* @tp_as_sequence@ */
1615 0, /* @tp_as_mapping@ */
1619 0, /* @tp_getattro@ */
1620 0, /* @tp_setattro@ */
1621 0, /* @tp_as_buffer@ */
1622 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1623 Py_TPFLAGS_BASETYPE
,
1626 "Authenticated encryption operation metaclass.",
1628 0, /* @tp_traverse@ */
1630 0, /* @tp_richcompare@ */
1631 0, /* @tp_weaklistoffset@ */
1633 0, /* @tp_iternext@ */
1634 0, /* @tp_methods@ */
1635 0, /* @tp_members@ */
1636 0, /* @tp_getset@ */
1639 0, /* @tp_descr_get@ */
1640 0, /* @tp_descr_set@ */
1641 0, /* @tp_dictoffset@ */
1643 PyType_GenericAlloc
, /* @tp_alloc@ */
1644 abstract_pynew
, /* @tp_new@ */
1649 static PyTypeObject gaeadenc_pytype_skel
= {
1650 PyObject_HEAD_INIT(0) 0, /* Header */
1651 "GAEEnc", /* @tp_name@ */
1652 sizeof(gaeadenc_pyobj
), /* @tp_basicsize@ */
1653 0, /* @tp_itemsize@ */
1655 gaeadenc_pydealloc
, /* @tp_dealloc@ */
1657 0, /* @tp_getattr@ */
1658 0, /* @tp_setattr@ */
1659 0, /* @tp_compare@ */
1661 0, /* @tp_as_number@ */
1662 0, /* @tp_as_sequence@ */
1663 0, /* @tp_as_mapping@ */
1667 0, /* @tp_getattro@ */
1668 0, /* @tp_setattro@ */
1669 0, /* @tp_as_buffer@ */
1670 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1671 Py_TPFLAGS_BASETYPE
,
1674 "Authenticated encryption operation.",
1676 0, /* @tp_traverse@ */
1678 0, /* @tp_richcompare@ */
1679 0, /* @tp_weaklistoffset@ */
1681 0, /* @tp_iternext@ */
1682 gaeadenc_pymethods
, /* @tp_methods@ */
1683 0, /* @tp_members@ */
1684 gaeadenc_pygetset
, /* @tp_getset@ */
1687 0, /* @tp_descr_get@ */
1688 0, /* @tp_descr_set@ */
1689 0, /* @tp_dictoffset@ */
1691 PyType_GenericAlloc
, /* @tp_alloc@ */
1692 abstract_pynew
, /* @tp_new@ */
1697 static PyTypeObject gcaeaddec_pytype_skel
= {
1698 PyObject_HEAD_INIT(0) 0, /* Header */
1699 "GAEDecClass", /* @tp_name@ */
1700 sizeof(gcaeaddec_pyobj
), /* @tp_basicsize@ */
1701 0, /* @tp_itemsize@ */
1703 0, /* @tp_dealloc@ */
1705 0, /* @tp_getattr@ */
1706 0, /* @tp_setattr@ */
1707 0, /* @tp_compare@ */
1709 0, /* @tp_as_number@ */
1710 0, /* @tp_as_sequence@ */
1711 0, /* @tp_as_mapping@ */
1715 0, /* @tp_getattro@ */
1716 0, /* @tp_setattro@ */
1717 0, /* @tp_as_buffer@ */
1718 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1719 Py_TPFLAGS_BASETYPE
,
1722 "Authenticated decryption operation metaclass.",
1724 0, /* @tp_traverse@ */
1726 0, /* @tp_richcompare@ */
1727 0, /* @tp_weaklistoffset@ */
1729 0, /* @tp_iternext@ */
1730 0, /* @tp_methods@ */
1731 0, /* @tp_members@ */
1732 0, /* @tp_getset@ */
1735 0, /* @tp_descr_get@ */
1736 0, /* @tp_descr_set@ */
1737 0, /* @tp_dictoffset@ */
1739 PyType_GenericAlloc
, /* @tp_alloc@ */
1740 abstract_pynew
, /* @tp_new@ */
1745 static PyTypeObject gaeaddec_pytype_skel
= {
1746 PyObject_HEAD_INIT(0) 0, /* Header */
1747 "GAEDec", /* @tp_name@ */
1748 sizeof(gaeaddec_pyobj
), /* @tp_basicsize@ */
1749 0, /* @tp_itemsize@ */
1751 gaeaddec_pydealloc
, /* @tp_dealloc@ */
1753 0, /* @tp_getattr@ */
1754 0, /* @tp_setattr@ */
1755 0, /* @tp_compare@ */
1757 0, /* @tp_as_number@ */
1758 0, /* @tp_as_sequence@ */
1759 0, /* @tp_as_mapping@ */
1763 0, /* @tp_getattro@ */
1764 0, /* @tp_setattro@ */
1765 0, /* @tp_as_buffer@ */
1766 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1767 Py_TPFLAGS_BASETYPE
,
1770 "Authenticated decryption operation.",
1772 0, /* @tp_traverse@ */
1774 0, /* @tp_richcompare@ */
1775 0, /* @tp_weaklistoffset@ */
1777 0, /* @tp_iternext@ */
1778 gaeaddec_pymethods
, /* @tp_methods@ */
1779 0, /* @tp_members@ */
1780 gaeaddec_pygetset
, /* @tp_getset@ */
1783 0, /* @tp_descr_get@ */
1784 0, /* @tp_descr_set@ */
1785 0, /* @tp_dictoffset@ */
1787 PyType_GenericAlloc
, /* @tp_alloc@ */
1788 abstract_pynew
, /* @tp_new@ */
1793 /*----- Hash functions ----------------------------------------------------*/
1795 PyTypeObject
*gchash_pytype
, *ghash_pytype
;
1797 CONVFUNC(gchash
, gchash
*, GCHASH_CH
)
1798 CONVFUNC(ghash
, ghash
*, GHASH_H
)
1800 static PyObject
*ghash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
1802 static const char *const kwlist
[] = { 0 };
1803 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", KWLIST
))
1805 return (ghash_pywrap((PyObject
*)ty
, GH_INIT(GCHASH_CH(ty
))));
1810 PyObject
*gchash_pywrap(gchash
*ch
)
1812 gchash_pyobj
*g
= newtype(gchash_pytype
, 0, ch
->name
);
1814 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
1815 g
->ty
.ht_type
.tp_base
= ghash_pytype
;
1816 Py_INCREF(ghash_pytype
);
1817 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
1818 Py_TPFLAGS_BASETYPE
|
1819 Py_TPFLAGS_HEAPTYPE
);
1820 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
1821 g
->ty
.ht_type
.tp_free
= 0;
1822 g
->ty
.ht_type
.tp_new
= ghash_pynew
;
1823 typeready(&g
->ty
.ht_type
);
1824 return ((PyObject
*)g
);
1827 PyObject
*ghash_pywrap(PyObject
*cobj
, ghash
*h
)
1830 if (!cobj
) cobj
= gchash_pywrap((/*unconst*/ gchash
*)GH_CLASS(h
));
1831 else Py_INCREF(cobj
);
1832 g
= PyObject_NEW(ghash_pyobj
, (PyTypeObject
*)cobj
);
1834 return ((PyObject
*)g
);
1837 static void ghash_pydealloc(PyObject
*me
)
1839 GH_DESTROY(GHASH_H(me
));
1840 Py_DECREF(me
->ob_type
);
1844 static PyObject
*gchget_name(PyObject
*me
, void *hunoz
)
1845 { return (PyString_FromString(GCHASH_CH(me
)->name
)); }
1847 static PyObject
*gchget_hashsz(PyObject
*me
, void *hunoz
)
1848 { return (PyInt_FromLong(GCHASH_CH(me
)->hashsz
)); }
1850 static PyObject
*gchget_bufsz(PyObject
*me
, void *hunoz
)
1851 { return (PyInt_FromLong(GCHASH_CH(me
)->bufsz
)); }
1853 static PyObject
*ghmeth_copy(PyObject
*me
, PyObject
*arg
)
1855 if (!PyArg_ParseTuple(arg
, ":copy")) return (0);
1856 return (ghash_pywrap((PyObject
*)me
->ob_type
, GH_COPY(GHASH_H(me
))));
1859 static PyObject
*ghmeth_hash(PyObject
*me
, PyObject
*arg
)
1863 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
1864 GH_HASH(GHASH_H(me
), p
, sz
);
1868 #define GHMETH_HASHU_(n, W, w) \
1869 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
1872 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
1873 GH_HASHU##W(GHASH_H(me), x); \
1876 DOUINTCONV(GHMETH_HASHU_
)
1878 #define GHMETH_HASHBUF_(n, W, w) \
1879 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
1883 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1884 if (sz > MASK##n) TYERR("string too long"); \
1885 GH_HASHBUF##W(GHASH_H(me), p, sz); \
1890 DOUINTCONV(GHMETH_HASHBUF_
)
1892 static PyObject
*ghmeth_hashstrz(PyObject
*me
, PyObject
*arg
)
1895 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
1896 GH_HASHSTRZ(GHASH_H(me
), p
);
1900 static PyObject
*ghmeth_done(PyObject
*me
, PyObject
*arg
)
1904 if (!PyArg_ParseTuple(arg
, ":done")) return (0);
1905 g
= GH_COPY(GHASH_H(me
));
1906 rc
= bytestring_pywrap(0, g
->ops
->c
->hashsz
);
1907 GH_DONE(g
, PyString_AS_STRING(rc
));
1912 static PyGetSetDef gchash_pygetset
[] = {
1913 #define GETSETNAME(op, name) gch##op##_##name
1914 GET (bufsz
, "CH.bufsz -> hash buffer size, or zero")
1915 GET (hashsz
, "CH.hashsz -> hash output size")
1916 GET (name
, "CH.name -> name of this kind of hash")
1921 static PyMethodDef ghash_pymethods
[] = {
1922 #define METHNAME(name) ghmeth_##name
1923 METH (copy
, "H.copy() -> HH")
1924 METH (hash
, "H.hash(M)")
1925 #define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
1928 #define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
1929 DOUINTCONV(METHBUF_
)
1931 METH (hashstrz
, "H.hashstrz(STRING)")
1932 METH (done
, "H.done() -> HASH")
1937 static PyTypeObject gchash_pytype_skel
= {
1938 PyObject_HEAD_INIT(0) 0, /* Header */
1939 "GCHash", /* @tp_name@ */
1940 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
1941 0, /* @tp_itemsize@ */
1943 0, /* @tp_dealloc@ */
1945 0, /* @tp_getattr@ */
1946 0, /* @tp_setattr@ */
1947 0, /* @tp_compare@ */
1949 0, /* @tp_as_number@ */
1950 0, /* @tp_as_sequence@ */
1951 0, /* @tp_as_mapping@ */
1955 0, /* @tp_getattro@ */
1956 0, /* @tp_setattro@ */
1957 0, /* @tp_as_buffer@ */
1958 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1959 Py_TPFLAGS_BASETYPE
,
1962 "Hash function metaclass.",
1964 0, /* @tp_traverse@ */
1966 0, /* @tp_richcompare@ */
1967 0, /* @tp_weaklistoffset@ */
1969 0, /* @tp_iternext@ */
1970 0, /* @tp_methods@ */
1971 0, /* @tp_members@ */
1972 gchash_pygetset
, /* @tp_getset@ */
1975 0, /* @tp_descr_get@ */
1976 0, /* @tp_descr_set@ */
1977 0, /* @tp_dictoffset@ */
1979 PyType_GenericAlloc
, /* @tp_alloc@ */
1980 abstract_pynew
, /* @tp_new@ */
1985 static PyTypeObject ghash_pytype_skel
= {
1986 PyObject_HEAD_INIT(0) 0, /* Header */
1987 "GHash", /* @tp_name@ */
1988 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
1989 0, /* @tp_itemsize@ */
1991 ghash_pydealloc
, /* @tp_dealloc@ */
1993 0, /* @tp_getattr@ */
1994 0, /* @tp_setattr@ */
1995 0, /* @tp_compare@ */
1997 0, /* @tp_as_number@ */
1998 0, /* @tp_as_sequence@ */
1999 0, /* @tp_as_mapping@ */
2003 0, /* @tp_getattro@ */
2004 0, /* @tp_setattro@ */
2005 0, /* @tp_as_buffer@ */
2006 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2007 Py_TPFLAGS_BASETYPE
,
2010 "Hash function, abstract base class.",
2012 0, /* @tp_traverse@ */
2014 0, /* @tp_richcompare@ */
2015 0, /* @tp_weaklistoffset@ */
2017 0, /* @tp_iternext@ */
2018 ghash_pymethods
, /* @tp_methods@ */
2019 0, /* @tp_members@ */
2020 0, /* @tp_getset@ */
2023 0, /* @tp_descr_get@ */
2024 0, /* @tp_descr_set@ */
2025 0, /* @tp_dictoffset@ */
2027 PyType_GenericAlloc
, /* @tp_alloc@ */
2028 abstract_pynew
, /* @tp_new@ */
2033 /*----- Message authentication --------------------------------------------*/
2035 PyTypeObject
*gcmac_pytype
, *gmac_pytype
, *gmhash_pytype
;
2037 CONVFUNC(gcmac
, gcmac
*, GCMAC_CM
)
2038 CONVFUNC(gmac
, gmac
*, GMAC_M
)
2039 CONVFUNC(gmhash
, ghash
*, GHASH_H
)
2041 static PyObject
*gmac_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2043 static const char *const kwlist
[] = { "k", 0 };
2047 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
2049 if (keysz(sz
, GCMAC_CM(ty
)->keysz
) != sz
) VALERR("bad key length");
2050 return (gmac_pywrap((PyObject
*)ty
,
2051 GM_KEY(GCMAC_CM(ty
), k
, sz
)));
2056 static PyObject
*gmhash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2058 static const char *const kwlist
[] = { 0 };
2061 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", KWLIST
)) return (0);
2062 g
= PyObject_NEW(ghash_pyobj
, ty
);
2063 g
->h
= GM_INIT(GMAC_M(ty
));
2065 return ((PyObject
*)g
);
2068 PyObject
*gcmac_pywrap(gcmac
*cm
)
2070 gcmac_pyobj
*g
= newtype(gcmac_pytype
, 0, cm
->name
);
2072 g
->ty
.ht_type
.tp_basicsize
= sizeof(gmac_pyobj
);
2073 g
->ty
.ht_type
.tp_base
= gmac_pytype
;
2074 Py_INCREF(gmac_pytype
);
2075 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2076 Py_TPFLAGS_BASETYPE
|
2077 Py_TPFLAGS_HEAPTYPE
);
2078 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2079 g
->ty
.ht_type
.tp_free
= 0;
2080 g
->ty
.ht_type
.tp_new
= gmac_pynew
;
2081 typeready(&g
->ty
.ht_type
);
2082 return ((PyObject
*)g
);
2085 PyObject
*gmac_pywrap(PyObject
*cobj
, gmac
*m
)
2088 if (!cobj
) cobj
= gcmac_pywrap((/*unconst*/ gcmac
*)GM_CLASS(m
));
2089 else Py_INCREF(cobj
);
2090 g
= newtype((PyTypeObject
*)cobj
, 0, 0);
2091 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
2092 g
->ty
.ht_name
= PyString_FromFormat("%s(keyed)", m
->ops
->c
->name
);
2093 g
->ty
.ht_type
.tp_name
= PyString_AS_STRING(g
->ty
.ht_name
);
2094 g
->ty
.ht_type
.tp_base
= gmhash_pytype
;
2095 Py_INCREF(gmac_pytype
);
2096 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2097 Py_TPFLAGS_BASETYPE
|
2098 Py_TPFLAGS_HEAPTYPE
);
2099 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2100 g
->ty
.ht_type
.tp_free
= 0;
2101 g
->ty
.ht_type
.tp_new
= gmhash_pynew
;
2102 typeready(&g
->ty
.ht_type
);
2104 return ((PyObject
*)g
);
2107 static void gmac_pydealloc(PyObject
*me
)
2109 GM_DESTROY(GMAC_M(me
));
2110 Py_DECREF(me
->ob_type
);
2111 PyType_Type
.tp_dealloc(me
);
2114 static PyObject
*gcmget_name(PyObject
*me
, void *hunoz
)
2115 { return (PyString_FromString(GCMAC_CM(me
)->name
)); }
2117 static PyObject
*gcmget_keysz(PyObject
*me
, void *hunoz
)
2118 { return (keysz_pywrap(GCMAC_CM(me
)->keysz
)); }
2120 static PyObject
*gcmget_tagsz(PyObject
*me
, void *hunoz
)
2121 { return (PyInt_FromLong(GCMAC_CM(me
)->hashsz
)); }
2123 static PyGetSetDef gcmac_pygetset
[] = {
2124 #define GETSETNAME(op, name) gcm##op##_##name
2125 GET (keysz
, "CM.keysz -> acceptable key sizes")
2126 GET (tagsz
, "CM.tagsz -> MAC output size")
2127 GET (name
, "CM.name -> name of this kind of MAC")
2132 static PyTypeObject gcmac_pytype_skel
= {
2133 PyObject_HEAD_INIT(0) 0, /* Header */
2134 "GCMAC", /* @tp_name@ */
2135 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
2136 0, /* @tp_itemsize@ */
2138 0, /* @tp_dealloc@ */
2140 0, /* @tp_getattr@ */
2141 0, /* @tp_setattr@ */
2142 0, /* @tp_compare@ */
2144 0, /* @tp_as_number@ */
2145 0, /* @tp_as_sequence@ */
2146 0, /* @tp_as_mapping@ */
2150 0, /* @tp_getattro@ */
2151 0, /* @tp_setattro@ */
2152 0, /* @tp_as_buffer@ */
2153 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2154 Py_TPFLAGS_BASETYPE
,
2157 "Message authentication code metametaclass.",
2159 0, /* @tp_traverse@ */
2161 0, /* @tp_richcompare@ */
2162 0, /* @tp_weaklistoffset@ */
2164 0, /* @tp_iternext@ */
2165 0, /* @tp_methods@ */
2166 0, /* @tp_members@ */
2167 gcmac_pygetset
, /* @tp_getset@ */
2170 0, /* @tp_descr_get@ */
2171 0, /* @tp_descr_set@ */
2172 0, /* @tp_dictoffset@ */
2174 PyType_GenericAlloc
, /* @tp_alloc@ */
2175 abstract_pynew
, /* @tp_new@ */
2180 static PyTypeObject gmac_pytype_skel
= {
2181 PyObject_HEAD_INIT(0) 0, /* Header */
2182 "GMAC", /* @tp_name@ */
2183 sizeof(gmac_pyobj
), /* @tp_basicsize@ */
2184 0, /* @tp_itemsize@ */
2186 gmac_pydealloc
, /* @tp_dealloc@ */
2188 0, /* @tp_getattr@ */
2189 0, /* @tp_setattr@ */
2190 0, /* @tp_compare@ */
2192 0, /* @tp_as_number@ */
2193 0, /* @tp_as_sequence@ */
2194 0, /* @tp_as_mapping@ */
2198 0, /* @tp_getattro@ */
2199 0, /* @tp_setattro@ */
2200 0, /* @tp_as_buffer@ */
2201 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2202 Py_TPFLAGS_BASETYPE
,
2205 "Message authentication code metaclass, abstract base class.",
2207 0, /* @tp_traverse@ */
2209 0, /* @tp_richcompare@ */
2210 0, /* @tp_weaklistoffset@ */
2212 0, /* @tp_iternext@ */
2213 0, /* @tp_methods@ */
2214 0, /* @tp_members@ */
2215 0, /* @tp_getset@ */
2218 0, /* @tp_descr_get@ */
2219 0, /* @tp_descr_set@ */
2220 0, /* @tp_dictoffset@ */
2222 PyType_GenericAlloc
, /* @tp_alloc@ */
2223 abstract_pynew
, /* @tp_new@ */
2228 static PyTypeObject gmhash_pytype_skel
= {
2229 PyObject_HEAD_INIT(0) 0, /* Header */
2230 "GMACHash", /* @tp_name@ */
2231 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
2232 0, /* @tp_itemsize@ */
2234 ghash_pydealloc
, /* @tp_dealloc@ */
2236 0, /* @tp_getattr@ */
2237 0, /* @tp_setattr@ */
2238 0, /* @tp_compare@ */
2240 0, /* @tp_as_number@ */
2241 0, /* @tp_as_sequence@ */
2242 0, /* @tp_as_mapping@ */
2246 0, /* @tp_getattro@ */
2247 0, /* @tp_setattro@ */
2248 0, /* @tp_as_buffer@ */
2249 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2250 Py_TPFLAGS_BASETYPE
,
2253 "Message authentication code, abstract base class.",
2255 0, /* @tp_traverse@ */
2257 0, /* @tp_richcompare@ */
2258 0, /* @tp_weaklistoffset@ */
2260 0, /* @tp_iternext@ */
2261 0, /* @tp_methods@ */
2262 0, /* @tp_members@ */
2263 0, /* @tp_getset@ */
2266 0, /* @tp_descr_get@ */
2267 0, /* @tp_descr_set@ */
2268 0, /* @tp_dictoffset@ */
2270 PyType_GenericAlloc
, /* @tp_alloc@ */
2271 abstract_pynew
, /* @tp_new@ */
2276 /*----- Special snowflake for Poly1305 ------------------------------------*/
2278 PyTypeObject
*poly1305cls_pytype
, *poly1305key_pytype
, *poly1305hash_pytype
;
2280 typedef struct poly1305key_pyobj
{
2281 PyHeapTypeObject ty
;
2283 } poly1305key_pyobj
;
2285 typedef struct poly1305hash_pyobj
{
2290 } poly1305hash_pyobj
;
2292 #define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
2293 #define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
2294 CONVFUNC(poly1305hash
, poly1305_ctx
*, P1305_CTX
)
2296 static PyObject
*poly1305hash_pynew(PyTypeObject
*ty
,
2297 PyObject
*arg
, PyObject
*kw
)
2299 static const char *const kwlist
[] = { "mask", 0 };
2300 poly1305key_pyobj
*pk
= (poly1305key_pyobj
*)ty
;
2301 poly1305hash_pyobj
*ph
;
2305 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|s#:new", KWLIST
, &m
, &sz
))
2307 if (m
&& sz
!= POLY1305_MASKSZ
) VALERR("bad mask length");
2308 ph
= PyObject_NEW(poly1305hash_pyobj
, ty
);
2310 if (m
) ph
->f
|= f_mask
;
2311 poly1305_macinit(&ph
->ctx
, &pk
->k
, m
);
2313 return ((PyObject
*)ph
);
2318 static PyObject
*poly1305key_pynew(PyTypeObject
*ty
,
2319 PyObject
*arg
, PyObject
*kw
)
2321 static const char *const kwlist
[] = { "k", 0 };
2322 poly1305key_pyobj
*pk
;
2326 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
2328 if (keysz(sz
, poly1305_keysz
) != sz
) VALERR("bad key length");
2330 pk
= newtype(ty
, 0, 0);
2331 pk
->ty
.ht_name
= PyString_FromString("poly1305(keyed)");
2332 pk
->ty
.ht_type
.tp_basicsize
= sizeof(poly1305hash_pyobj
);
2333 pk
->ty
.ht_type
.tp_name
= PyString_AS_STRING(pk
->ty
.ht_name
);
2334 pk
->ty
.ht_type
.tp_base
= poly1305hash_pytype
;
2335 Py_INCREF(poly1305key_pytype
);
2336 pk
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2337 Py_TPFLAGS_BASETYPE
|
2338 Py_TPFLAGS_HEAPTYPE
);
2339 pk
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2340 pk
->ty
.ht_type
.tp_free
= 0;
2341 pk
->ty
.ht_type
.tp_new
= poly1305hash_pynew
;
2342 typeready(&pk
->ty
.ht_type
);
2344 poly1305_keyinit(&pk
->k
, k
, sz
);
2345 return ((PyObject
*)pk
);
2351 static PyObject
*poly1305clsget_name(PyObject
*me
, void *hunoz
)
2352 { return (PyString_FromString("poly1305")); }
2354 static PyObject
*poly1305clsget_keysz(PyObject
*me
, void *hunoz
)
2355 { return (keysz_pywrap(poly1305_keysz
)); }
2357 static PyObject
*poly1305clsget_masksz(PyObject
*me
, void *hunoz
)
2358 { return (PyInt_FromLong(POLY1305_MASKSZ
)); }
2360 static PyObject
*poly1305clsget_tagsz(PyObject
*me
, void *hunoz
)
2361 { return (PyInt_FromLong(POLY1305_TAGSZ
)); }
2363 static PyObject
*polymeth_copy(PyObject
*me
, PyObject
*arg
)
2365 poly1305hash_pyobj
*ph
;
2366 if (!PyArg_ParseTuple(arg
, ":copy")) return (0);
2367 ph
= PyObject_NEW(poly1305hash_pyobj
, me
->ob_type
);
2368 poly1305_copy(&ph
->ctx
, P1305_CTX(me
));
2369 Py_INCREF(me
->ob_type
);
2370 return ((PyObject
*)ph
);
2373 static PyObject
*polymeth_hash(PyObject
*me
, PyObject
*arg
)
2377 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
2378 poly1305_hash(P1305_CTX(me
), p
, sz
);
2382 #define POLYMETH_HASHU_(n, W, w) \
2383 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
2387 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
2388 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2391 DOUINTCONV(POLYMETH_HASHU_
)
2393 #define POLYMETH_HASHBUF_(n, W, w) \
2394 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
2399 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
2400 if (sz > MASK##n) TYERR("string too long"); \
2401 STORE##W(b, sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2402 poly1305_hash(P1305_CTX(me), p, sz); \
2407 DOUINTCONV(POLYMETH_HASHBUF_
)
2409 static PyObject
*polymeth_hashstrz(PyObject
*me
, PyObject
*arg
)
2412 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
2413 poly1305_hash(P1305_CTX(me
), p
, strlen(p
) + 1);
2417 static PyObject
*polymeth_flush(PyObject
*me
, PyObject
*arg
)
2419 if (!PyArg_ParseTuple(arg
, ":flush")) return (0);
2420 poly1305_flush(P1305_CTX(me
));
2424 static PyObject
*polymeth_flushzero(PyObject
*me
, PyObject
*arg
)
2426 if (!PyArg_ParseTuple(arg
, ":flushzero")) return (0);
2427 poly1305_flushzero(P1305_CTX(me
));
2431 static PyObject
*polymeth_concat(PyObject
*me
, PyObject
*arg
)
2433 PyObject
*pre
, *suff
;
2434 if (!PyArg_ParseTuple(arg
, "OO:concat", &pre
, &suff
)) return (0);
2435 if (!PyObject_TypeCheck(pre
, poly1305hash_pytype
) ||
2436 !PyObject_TypeCheck(suff
, poly1305hash_pytype
))
2437 TYERR("wanted a poly1305hash");
2438 if (me
->ob_type
!= pre
->ob_type
|| me
->ob_type
!= suff
->ob_type
)
2439 TYERR("key mismatch");
2440 if (P1305_CTX(pre
)->nbuf
) VALERR("prefix is not block-aligned");
2441 poly1305_concat(P1305_CTX(me
), P1305_CTX(pre
), P1305_CTX(suff
));
2447 static PyObject
*polymeth_done(PyObject
*me
, PyObject
*arg
)
2450 if (!PyArg_ParseTuple(arg
, ":done")) return (0);
2451 if (!(P1305_F(me
) & f_mask
)) VALERR("no mask");
2452 rc
= bytestring_pywrap(0, POLY1305_TAGSZ
);
2453 poly1305_done(P1305_CTX(me
), PyString_AS_STRING(rc
));
2459 static PyGetSetDef poly1305cls_pygetset
[] = {
2460 #define GETSETNAME(op, name) poly1305cls##op##_##name
2461 GET (keysz
, "PC.keysz -> acceptable key sizes")
2462 GET (masksz
, "PC.masksz -> mask size")
2463 GET (tagsz
, "PC.tagsz -> MAC output size")
2464 GET (name
, "PC.name -> name of this kind of MAC")
2469 static PyMethodDef poly1305hash_pymethods
[] = {
2470 #define METHNAME(name) polymeth_##name
2471 METH (copy
, "P.copy() -> PP")
2472 METH (hash
, "P.hash(M)")
2473 #define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
2476 #define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
2477 DOUINTCONV(METHBUF_
)
2479 METH (hashstrz
, "P.hashstrz(STRING)")
2480 METH (flush
, "P.flush()")
2481 METH (flushzero
, "P.flushzero()")
2482 METH (concat
, "P.concat(PREFIX, SUFFIX)")
2483 METH (done
, "P.done() -> TAG")
2488 static PyTypeObject poly1305cls_pytype_skel
= {
2489 PyObject_HEAD_INIT(0) 0, /* Header */
2490 "Poly1305Class", /* @tp_name@ */
2491 sizeof(PyHeapTypeObject
), /* @tp_basicsize@ */
2492 0, /* @tp_itemsize@ */
2494 0, /* @tp_dealloc@ */
2496 0, /* @tp_getattr@ */
2497 0, /* @tp_setattr@ */
2498 0, /* @tp_compare@ */
2500 0, /* @tp_as_number@ */
2501 0, /* @tp_as_sequence@ */
2502 0, /* @tp_as_mapping@ */
2506 0, /* @tp_getattro@ */
2507 0, /* @tp_setattro@ */
2508 0, /* @tp_as_buffer@ */
2509 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2510 Py_TPFLAGS_BASETYPE
,
2513 "Poly1305 metametaclass. Best not to ask.",
2515 0, /* @tp_traverse@ */
2517 0, /* @tp_richcompare@ */
2518 0, /* @tp_weaklistoffset@ */
2520 0, /* @tp_iternext@ */
2521 0, /* @tp_methods@ */
2522 0, /* @tp_members@ */
2523 poly1305cls_pygetset
, /* @tp_getset@ */
2526 0, /* @tp_descr_get@ */
2527 0, /* @tp_descr_set@ */
2528 0, /* @tp_dictoffset@ */
2530 PyType_GenericAlloc
, /* @tp_alloc@ */
2531 abstract_pynew
, /* @tp_new@ */
2536 static PyTypeObject poly1305key_pytype_skel
= {
2537 PyObject_HEAD_INIT(0) 0, /* Header */
2538 "poly1305", /* @tp_name@ */
2539 sizeof(poly1305key_pyobj
), /* @tp_basicsize@ */
2540 0, /* @tp_itemsize@ */
2542 0, /* @tp_dealloc@ */
2544 0, /* @tp_getattr@ */
2545 0, /* @tp_setattr@ */
2546 0, /* @tp_compare@ */
2548 0, /* @tp_as_number@ */
2549 0, /* @tp_as_sequence@ */
2550 0, /* @tp_as_mapping@ */
2554 0, /* @tp_getattro@ */
2555 0, /* @tp_setattro@ */
2556 0, /* @tp_as_buffer@ */
2557 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2558 Py_TPFLAGS_BASETYPE
,
2561 "poly1305(K): Poly1305 key.",
2563 0, /* @tp_traverse@ */
2565 0, /* @tp_richcompare@ */
2566 0, /* @tp_weaklistoffset@ */
2568 0, /* @tp_iternext@ */
2569 0, /* @tp_methods@ */
2570 0, /* @tp_members@ */
2571 0, /* @tp_getset@ */
2574 0, /* @tp_descr_get@ */
2575 0, /* @tp_descr_set@ */
2576 0, /* @tp_dictoffset@ */
2578 PyType_GenericAlloc
, /* @tp_alloc@ */
2579 poly1305key_pynew
, /* @tp_new@ */
2584 static PyTypeObject poly1305hash_pytype_skel
= {
2585 PyObject_HEAD_INIT(0) 0, /* Header */
2586 "Poly1305Hash", /* @tp_name@ */
2587 sizeof(poly1305hash_pyobj
), /* @tp_basicsize@ */
2588 0, /* @tp_itemsize@ */
2590 0, /* @tp_dealloc@ */
2592 0, /* @tp_getattr@ */
2593 0, /* @tp_setattr@ */
2594 0, /* @tp_compare@ */
2596 0, /* @tp_as_number@ */
2597 0, /* @tp_as_sequence@ */
2598 0, /* @tp_as_mapping@ */
2602 0, /* @tp_getattro@ */
2603 0, /* @tp_setattro@ */
2604 0, /* @tp_as_buffer@ */
2605 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2606 Py_TPFLAGS_BASETYPE
,
2609 "Poly1305 MAC context base class.",
2611 0, /* @tp_traverse@ */
2613 0, /* @tp_richcompare@ */
2614 0, /* @tp_weaklistoffset@ */
2616 0, /* @tp_iternext@ */
2617 poly1305hash_pymethods
, /* @tp_methods@ */
2618 0, /* @tp_members@ */
2619 0, /* @tp_getset@ */
2622 0, /* @tp_descr_get@ */
2623 0, /* @tp_descr_set@ */
2624 0, /* @tp_dictoffset@ */
2626 PyType_GenericAlloc
, /* @tp_alloc@ */
2627 abstract_pynew
, /* @tp_new@ */
2632 /*----- Special snowflake for HSalsa and HChaCha --------------------------*/
2634 #define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
2635 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
2637 dance##_ctx dance; \
2639 Py_ssize_t ksz, nsz; \
2641 if (!PyArg_ParseTuple(arg, "s#s#:" #hdance "_prf", \
2642 &k, &ksz, &n, &nsz)) \
2644 if (ksz != keysz(ksz, dance##_keysz)) VALERR("bad key length"); \
2645 if (nsz != HDANCE##_INSZ) VALERR("bad input length"); \
2646 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
2647 dance##_init(&dance, k, ksz, 0); \
2648 hdance##_prf(&dance, n, PyString_AS_STRING(rc)); \
2654 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa20
)
2655 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa2012
)
2656 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa208
)
2658 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha20
)
2659 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha12
)
2660 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha8
)
2662 /*----- Keccak-p[1600, n] -------------------------------------------------*/
2664 static PyTypeObject
*kxvik_pytype
;
2666 typedef struct kxvik_pyobj
{
2672 static PyObject
*kxvik_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2675 kxvik_pyobj
*rc
= 0;
2676 static const char *const kwlist
[] = { "nround", 0 };
2677 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:new", KWLIST
,
2680 rc
= (kxvik_pyobj
*)ty
->tp_alloc(ty
, 0);
2682 keccak1600_init(&rc
->s
);
2684 return ((PyObject
*)rc
);
2687 static PyObject
*kxvikmeth_copy(PyObject
*me
, PyObject
*arg
)
2689 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
, *rc
= 0;
2690 if (!PyArg_ParseTuple(arg
, ":copy")) goto end
;
2691 rc
= (kxvik_pyobj
*)k
->ob_type
->tp_alloc(k
->ob_type
, 0);
2692 rc
->s
= k
->s
; rc
->n
= k
->n
;
2694 return ((PyObject
*)rc
);
2697 static PyObject
*kxvikmeth_mix(PyObject
*me
, PyObject
*arg
)
2699 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2704 char *p
; Py_ssize_t n
;
2706 if (!PyArg_ParseTuple(arg
, "s#:mix", &p
, &n
)) goto end
;
2707 if (n
> 200) VALERR("out of range");
2708 q
= (const octet
*)p
;
2710 while (n
> 8) { LOAD64_L_(t
[i
], q
); i
++; q
+= 8; n
-= 8; }
2712 memcpy(buf
, q
, n
); memset(buf
+ n
, 0, 8 - n
);
2713 LOAD64_L_(t
[i
], buf
); i
++;
2715 keccak1600_mix(&k
->s
, t
, i
);
2721 static PyObject
*kxvikmeth_extract(PyObject
*me
, PyObject
*arg
)
2723 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2730 if (!PyArg_ParseTuple(arg
, "O&:extract", convuint
, &n
)) goto end
;
2731 if (n
> 200) VALERR("out of range");
2732 rc
= bytestring_pywrap(0, n
);
2733 q
= (octet
*)PyString_AS_STRING(rc
);
2734 keccak1600_extract(&k
->s
, t
, (n
+ 7)/8);
2736 while (n
> 8) { STORE64_L_(q
, t
[i
]); i
++; q
+= 8; n
-= 8; }
2737 if (n
) { STORE64_L_(buf
, t
[i
]); memcpy(q
, buf
, n
); }
2742 static PyObject
*kxvikmeth_step(PyObject
*me
, PyObject
*arg
)
2744 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2745 if (!PyArg_ParseTuple(arg
, ":step")) return (0);
2746 keccak1600_p(&k
->s
, &k
->s
, k
->n
);
2750 static PyObject
*kxvikget_nround(PyObject
*me
, void *hunoz
)
2752 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2753 return (PyInt_FromLong(k
->n
));
2756 static int kxvikset_nround(PyObject
*me
, PyObject
*val
, void *hunoz
)
2758 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2762 if (!val
) NIERR("__del__");
2763 if (!convuint(val
, &n
)) goto end
;
2770 static PyGetSetDef kxvik_pygetset
[] = {
2771 #define GETSETNAME(op, name) kxvik##op##_##name
2772 GETSET(nround
, "KECCAK.nround -> number of rounds")
2777 static PyMethodDef kxvik_pymethods
[] = {
2778 #define METHNAME(func) kxvikmeth_##func
2779 METH (copy
, "KECCAK.copy() -> KECCAK'")
2780 METH (mix
, "KECCAK.mix(DATA)")
2781 METH (extract
, "KECCAK.extract(NOCTETS)")
2782 METH (step
, "KECCAK.step()")
2787 static PyTypeObject kxvik_pytype_skel
= {
2788 PyObject_HEAD_INIT(0) 0, /* Header */
2789 "Keccak1600", /* @tp_name@ */
2790 sizeof(kxvik_pyobj
), /* @tp_basicsize@ */
2791 0, /* @tp_itemsize@ */
2793 0, /* @tp_dealloc@ */
2795 0, /* @tp_getattr@ */
2796 0, /* @tp_setattr@ */
2797 0, /* @tp_compare@ */
2799 0, /* @tp_as_number@ */
2800 0, /* @tp_as_sequence@ */
2801 0, /* @tp_as_mapping@ */
2805 0, /* @tp_getattro@ */
2806 0, /* @tp_setattro@ */
2807 0, /* @tp_as_buffer@ */
2808 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2809 Py_TPFLAGS_BASETYPE
,
2812 "Keccak1600([nround = 24]): Keccak-p[1600, n] state.",
2814 0, /* @tp_traverse@ */
2816 0, /* @tp_richcompare@ */
2817 0, /* @tp_weaklistoffset@ */
2819 0, /* @tp_iternext@ */
2820 kxvik_pymethods
, /* @tp_methods@ */
2821 0, /* @tp_members@ */
2822 kxvik_pygetset
, /* @tp_getset@ */
2825 0, /* @tp_descr_get@ */
2826 0, /* @tp_descr_set@ */
2827 0, /* @tp_dictoffset@ */
2829 PyType_GenericAlloc
, /* @tp_alloc@ */
2830 kxvik_pynew
, /* @tp_new@ */
2835 static PyTypeObject
*shake_pytype
, *shake128_pytype
, *shake256_pytype
;
2837 typedef struct shake_pyobj
{
2843 #define SHAKE_H(o) (&((shake_pyobj *)(o))->h)
2844 #define SHAKE_ST(o) (((shake_pyobj *)(o))->st)
2846 static PyObject
*shake_dopynew(void (*initfn
)(shake_ctx
*,
2847 const void *, size_t,
2848 const void *, size_t),
2850 PyObject
*arg
, PyObject
*kw
)
2852 shake_pyobj
*rc
= 0;
2853 char *p
= 0, *f
= 0;
2854 Py_ssize_t psz
= 0, fsz
= 0;
2855 static const char *const kwlist
[] = { "perso", "func", 0 };
2857 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|s#s#:new", KWLIST
,
2858 &p
, &psz
, &f
, &fsz
))
2860 rc
= (shake_pyobj
*)ty
->tp_alloc(ty
, 0);
2861 initfn(&rc
->h
, f
, fsz
, p
, psz
);
2864 return ((PyObject
*)rc
);
2867 static PyObject
*shake128_pynew(PyTypeObject
*ty
,
2868 PyObject
*arg
, PyObject
*kw
)
2869 { return (shake_dopynew(cshake128_init
, ty
, arg
, kw
)); }
2871 static PyObject
*shake256_pynew(PyTypeObject
*ty
,
2872 PyObject
*arg
, PyObject
*kw
)
2873 { return (shake_dopynew(cshake256_init
, ty
, arg
, kw
)); }
2875 static int shake_check(PyObject
*me
, int st
)
2877 if (SHAKE_ST(me
) != st
) VALERR("wrong state");
2883 static PyObject
*shakemeth_hash(PyObject
*me
, PyObject
*arg
)
2887 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
2888 if (shake_check(me
, 0)) return (0);
2889 shake_hash(SHAKE_H(me
), p
, sz
);
2893 #define SHAKEMETH_HASHU_(n, W, w) \
2894 static PyObject *shakemeth_hashu##w(PyObject *me, PyObject *arg) \
2898 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
2899 if (shake_check(me, 0)) return (0); \
2900 STORE##W(b, x); shake_hash(SHAKE_H(me), b, sizeof(b)); \
2903 DOUINTCONV(SHAKEMETH_HASHU_
)
2905 #define SHAKEMETH_HASHBUF_(n, W, w) \
2906 static PyObject *shakemeth_hashbuf##w(PyObject *me, PyObject *arg) \
2911 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
2912 if (sz > MASK##n) TYERR("string too long"); \
2913 if (shake_check(me, 0)) goto end; \
2914 STORE##W(b, sz); shake_hash(SHAKE_H(me), b, sizeof(b)); \
2915 shake_hash(SHAKE_H(me), p, sz); \
2920 DOUINTCONV(SHAKEMETH_HASHBUF_
)
2922 static PyObject
*shakemeth_hashstrz(PyObject
*me
, PyObject
*arg
)
2925 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
2926 if (shake_check(me
, 0)) return (0);
2927 shake_hash(SHAKE_H(me
), p
, strlen(p
) + 1);
2931 static PyObject
*shakemeth_xof(PyObject
*me
, PyObject
*arg
)
2933 if (!PyArg_ParseTuple(arg
, ":xof")) goto end
;
2934 if (shake_check(me
, 0)) goto end
;
2935 shake_xof(SHAKE_H(me
));
2942 static PyObject
*shakemeth_done(PyObject
*me
, PyObject
*arg
)
2946 if (!PyArg_ParseTuple(arg
, "O&:done", convszt
, &n
)) goto end
;
2947 if (shake_check(me
, 0)) goto end
;
2948 rc
= bytestring_pywrap(0, n
);
2949 shake_done(SHAKE_H(me
), PyString_AS_STRING(rc
), n
);
2955 static PyObject
*shakemeth_copy(PyObject
*me
, PyObject
*arg
)
2957 shake_pyobj
*rc
= 0;
2959 if (!PyArg_ParseTuple(arg
, ":copy")) goto end
;
2960 rc
= PyObject_NEW(shake_pyobj
, me
->ob_type
);
2961 rc
->h
= *SHAKE_H(me
);
2962 rc
->st
= SHAKE_ST(me
);
2964 return ((PyObject
*)rc
);
2967 static PyObject
*shakemeth_get(PyObject
*me
, PyObject
*arg
)
2972 if (!PyArg_ParseTuple(arg
, "O&:get", convszt
, &sz
)) goto end
;
2973 if (shake_check(me
, 1)) goto end
;
2974 rc
= bytestring_pywrap(0, sz
);
2975 shake_get(SHAKE_H(me
), PyString_AS_STRING(rc
), sz
);
2980 static PyObject
*shakemeth_mask(PyObject
*me
, PyObject
*arg
)
2983 char *p
; Py_ssize_t sz
;
2985 if (!PyArg_ParseTuple(arg
, "s#:mask", &p
, &sz
)) goto end
;
2986 if (shake_check(me
, 1)) goto end
;
2987 rc
= bytestring_pywrap(0, sz
);
2988 shake_mask(SHAKE_H(me
), p
, PyString_AS_STRING(rc
), sz
);
2993 static PyObject
*shakeget_rate(PyObject
*me
, void *hunoz
)
2994 { return (PyInt_FromLong(SHAKE_H(me
)->h
.r
)); }
2996 static PyObject
*shakeget_buffered(PyObject
*me
, void *hunoz
)
2997 { return (PyInt_FromLong(SHAKE_H(me
)->h
.n
)); }
2999 static PyObject
*shakeget_state(PyObject
*me
, void *hunoz
)
3001 int st
= SHAKE_ST(me
);
3002 return (PyString_FromString(st
== 0 ?
"absorb" :
3003 st
== 1 ?
"squeeze" : "dead"));
3006 static PyGetSetDef shake_pygetset
[] = {
3007 #define GETSETNAME(op, name) shake##op##_##name
3008 GET (rate
, "S.rate -> rate, in bytes")
3009 GET (buffered
, "S.buffered -> amount currently buffered")
3010 GET (state
, "S.state -> `absorb', `squeeze', `dead'")
3015 static PyMethodDef shake_pymethods
[] = {
3016 #define METHNAME(func) shakemeth_##func
3017 METH (copy
, "S.copy() -> SS")
3018 METH (hash
, "S.hash(M)")
3019 #define METHU_(n, W, w) METH(hashu##w, "S.hashu" #w "(WORD)")
3022 #define METHBUF_(n, W, w) METH(hashbuf##w, "S.hashbuf" #w "(BYTES)")
3023 DOUINTCONV(METHBUF_
)
3025 METH (hashstrz
, "S.hashstrz(STRING)")
3026 METH (xof
, "S.xof()")
3027 METH (done
, "S.done(LEN) ->H")
3028 METH (get
, "S.get(LEN) -> H")
3029 METH (mask
, "S.mask(M) -> C")
3034 static PyTypeObject shake_pytype_skel
= {
3035 PyObject_HEAD_INIT(0) 0, /* Header */
3036 "Shake", /* @tp_name@ */
3037 sizeof(shake_pyobj
), /* @tp_basicsize@ */
3038 0, /* @tp_itemsize@ */
3040 0, /* @tp_dealloc@ */
3042 0, /* @tp_getattr@ */
3043 0, /* @tp_setattr@ */
3044 0, /* @tp_compare@ */
3046 0, /* @tp_as_number@ */
3047 0, /* @tp_as_sequence@ */
3048 0, /* @tp_as_mapping@ */
3052 0, /* @tp_getattro@ */
3053 0, /* @tp_setattro@ */
3054 0, /* @tp_as_buffer@ */
3055 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3056 Py_TPFLAGS_BASETYPE
,
3059 "SHAKE/cSHAKE base class.",
3061 0, /* @tp_traverse@ */
3063 0, /* @tp_richcompare@ */
3064 0, /* @tp_weaklistoffset@ */
3066 0, /* @tp_iternext@ */
3067 shake_pymethods
, /* @tp_methods@ */
3068 0, /* @tp_members@ */
3069 shake_pygetset
, /* @tp_getset@ */
3072 0, /* @tp_descr_get@ */
3073 0, /* @tp_descr_set@ */
3074 0, /* @tp_dictoffset@ */
3076 PyType_GenericAlloc
, /* @tp_alloc@ */
3077 abstract_pynew
, /* @tp_new@ */
3082 static PyTypeObject shake128_pytype_skel
= {
3083 PyObject_HEAD_INIT(0) 0, /* Header */
3084 "Shake128", /* @tp_name@ */
3085 0, /* @tp_basicsize@ */
3086 0, /* @tp_itemsize@ */
3088 0, /* @tp_dealloc@ */
3090 0, /* @tp_getattr@ */
3091 0, /* @tp_setattr@ */
3092 0, /* @tp_compare@ */
3094 0, /* @tp_as_number@ */
3095 0, /* @tp_as_sequence@ */
3096 0, /* @tp_as_mapping@ */
3100 0, /* @tp_getattro@ */
3101 0, /* @tp_setattro@ */
3102 0, /* @tp_as_buffer@ */
3103 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3104 Py_TPFLAGS_BASETYPE
,
3107 "Shake128([perso = STR], [func = STR]): SHAKE128/cSHAKE128 XOF.",
3109 0, /* @tp_traverse@ */
3111 0, /* @tp_richcompare@ */
3112 0, /* @tp_weaklistoffset@ */
3114 0, /* @tp_iternext@ */
3115 0, /* @tp_methods@ */
3116 0, /* @tp_members@ */
3117 0, /* @tp_getset@ */
3120 0, /* @tp_descr_get@ */
3121 0, /* @tp_descr_set@ */
3122 0, /* @tp_dictoffset@ */
3124 PyType_GenericAlloc
, /* @tp_alloc@ */
3125 shake128_pynew
, /* @tp_new@ */
3130 static PyTypeObject shake256_pytype_skel
= {
3131 PyObject_HEAD_INIT(0) 0, /* Header */
3132 "Shake256", /* @tp_name@ */
3133 0, /* @tp_basicsize@ */
3134 0, /* @tp_itemsize@ */
3136 0, /* @tp_dealloc@ */
3138 0, /* @tp_getattr@ */
3139 0, /* @tp_setattr@ */
3140 0, /* @tp_compare@ */
3142 0, /* @tp_as_number@ */
3143 0, /* @tp_as_sequence@ */
3144 0, /* @tp_as_mapping@ */
3148 0, /* @tp_getattro@ */
3149 0, /* @tp_setattro@ */
3150 0, /* @tp_as_buffer@ */
3151 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3152 Py_TPFLAGS_BASETYPE
,
3155 "Shake256([perso = STR], [func = STR]): SHAKE256/cSHAKE256 XOF.",
3157 0, /* @tp_traverse@ */
3159 0, /* @tp_richcompare@ */
3160 0, /* @tp_weaklistoffset@ */
3162 0, /* @tp_iternext@ */
3163 0, /* @tp_methods@ */
3164 0, /* @tp_members@ */
3165 0, /* @tp_getset@ */
3168 0, /* @tp_descr_get@ */
3169 0, /* @tp_descr_set@ */
3170 0, /* @tp_dictoffset@ */
3172 PyType_GenericAlloc
, /* @tp_alloc@ */
3173 shake256_pynew
, /* @tp_new@ */
3178 /*----- Pseudorandom permutations -----------------------------------------*/
3180 static PyTypeObject
*gcprp_pytype
, *gprp_pytype
;
3182 typedef struct prpinfo
{
3187 void (*init
)(void *, const void *, size_t);
3188 void (*eblk
)(void *, const void *, void *);
3189 void (*dblk
)(void *, const void *, void *);
3192 #define PRP_DEF(PRE, pre) \
3193 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
3194 { pre##_init(ctx, k, ksz); } \
3195 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
3197 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3198 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3200 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
3202 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3203 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3205 static const prpinfo pre##_prpinfo = { \
3206 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
3207 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
3211 static const struct prpinfo
*const gprptab
[] = {
3212 #define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
3217 typedef struct gcprp_pyobj
{
3218 PyHeapTypeObject ty
;
3221 #define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
3223 typedef struct gprp_pyobj
{
3227 #define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
3228 #define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
3230 typedef struct prp
{
3235 static PyObject
*gprp_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
3237 static const char *const kwlist
[] = { "key", 0 };
3240 const prpinfo
*prp
= GCPRP_PRP(ty
);
3243 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
3245 if (keysz(sz
, prp
->keysz
) != sz
) VALERR("bad key length");
3246 me
= (PyObject
*)ty
->tp_alloc(ty
, 0);
3248 prp
->init(GPRP_CTX(me
), k
, sz
);
3255 static void gprp_pydealloc(PyObject
*me
)
3256 { Py_DECREF(me
->ob_type
); FREEOBJ(me
); }
3258 static PyObject
*gcprp_pywrap(const prpinfo
*prp
)
3260 gcprp_pyobj
*g
= newtype(gcprp_pytype
, 0, prp
->name
);
3262 g
->ty
.ht_type
.tp_basicsize
= sizeof(gprp_pyobj
) + prp
->ctxsz
;
3263 g
->ty
.ht_type
.tp_base
= gprp_pytype
;
3264 Py_INCREF(gprp_pytype
);
3265 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
3266 Py_TPFLAGS_BASETYPE
|
3267 Py_TPFLAGS_HEAPTYPE
);
3268 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
3269 g
->ty
.ht_type
.tp_free
= 0;
3270 g
->ty
.ht_type
.tp_new
= gprp_pynew
;
3271 typeready(&g
->ty
.ht_type
);
3272 return ((PyObject
*)g
);
3275 static PyObject
*gcpget_name(PyObject
*me
, void *hunoz
)
3276 { return (PyString_FromString(GCPRP_PRP(me
)->name
)); }
3277 static PyObject
*gcpget_keysz(PyObject
*me
, void *hunoz
)
3278 { return (keysz_pywrap(GCPRP_PRP(me
)->keysz
)); }
3279 static PyObject
*gcpget_blksz(PyObject
*me
, void *hunoz
)
3280 { return (PyInt_FromLong(GCPRP_PRP(me
)->blksz
)); }
3282 static PyObject
*gpmeth_encrypt(PyObject
*me
, PyObject
*arg
)
3288 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &p
, &n
)) goto end
;
3289 if (n
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
3290 rc
= bytestring_pywrap(0, n
);
3291 GPRP_PRP(me
)->eblk(GPRP_CTX(me
), p
, PyString_AS_STRING(rc
));
3296 static PyObject
*gpmeth_decrypt(PyObject
*me
, PyObject
*arg
)
3302 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &p
, &n
)) goto end
;
3303 if (n
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
3304 rc
= bytestring_pywrap(0, n
);
3305 GPRP_PRP(me
)->dblk(GPRP_CTX(me
), p
, PyString_AS_STRING(rc
));
3310 static PyGetSetDef gcprp_pygetset
[] = {
3311 #define GETSETNAME(op, name) gcp##op##_##name
3312 GET (keysz
, "CP.keysz -> acceptable key sizes")
3313 GET (blksz
, "CP.blksz -> block size")
3314 GET (name
, "CP.name -> name of this kind of PRP")
3319 static PyMethodDef gprp_pymethods
[] = {
3320 #define METHNAME(name) gpmeth_##name
3321 METH (encrypt
, "P.encrypt(PT) -> CT")
3322 METH (decrypt
, "P.decrypt(CT) -> PT")
3327 static PyTypeObject gcprp_pytype_skel
= {
3328 PyObject_HEAD_INIT(0) 0, /* Header */
3329 "GCPRP", /* @tp_name@ */
3330 sizeof(gcprp_pyobj
), /* @tp_basicsize@ */
3331 0, /* @tp_itemsize@ */
3333 0, /* @tp_dealloc@ */
3335 0, /* @tp_getattr@ */
3336 0, /* @tp_setattr@ */
3337 0, /* @tp_compare@ */
3339 0, /* @tp_as_number@ */
3340 0, /* @tp_as_sequence@ */
3341 0, /* @tp_as_mapping@ */
3345 0, /* @tp_getattro@ */
3346 0, /* @tp_setattro@ */
3347 0, /* @tp_as_buffer@ */
3348 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3349 Py_TPFLAGS_BASETYPE
,
3352 "Pseudorandom permutation metaclass.",
3354 0, /* @tp_traverse@ */
3356 0, /* @tp_richcompare@ */
3357 0, /* @tp_weaklistoffset@ */
3359 0, /* @tp_iternext@ */
3360 0, /* @tp_methods@ */
3361 0, /* @tp_members@ */
3362 gcprp_pygetset
, /* @tp_getset@ */
3365 0, /* @tp_descr_get@ */
3366 0, /* @tp_descr_set@ */
3367 0, /* @tp_dictoffset@ */
3369 PyType_GenericAlloc
, /* @tp_alloc@ */
3370 abstract_pynew
, /* @tp_new@ */
3375 static PyTypeObject gprp_pytype_skel
= {
3376 PyObject_HEAD_INIT(0) 0, /* Header */
3377 "GPRP", /* @tp_name@ */
3378 sizeof(gprp_pyobj
), /* @tp_basicsize@ */
3379 0, /* @tp_itemsize@ */
3381 gprp_pydealloc
, /* @tp_dealloc@ */
3383 0, /* @tp_getattr@ */
3384 0, /* @tp_setattr@ */
3385 0, /* @tp_compare@ */
3387 0, /* @tp_as_number@ */
3388 0, /* @tp_as_sequence@ */
3389 0, /* @tp_as_mapping@ */
3393 0, /* @tp_getattro@ */
3394 0, /* @tp_setattro@ */
3395 0, /* @tp_as_buffer@ */
3396 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3397 Py_TPFLAGS_BASETYPE
,
3400 "Pseudorandom permutation, abstract base class.",
3402 0, /* @tp_traverse@ */
3404 0, /* @tp_richcompare@ */
3405 0, /* @tp_weaklistoffset@ */
3407 0, /* @tp_iternext@ */
3408 gprp_pymethods
, /* @tp_methods@ */
3409 0, /* @tp_members@ */
3410 0, /* @tp_getset@ */
3413 0, /* @tp_descr_get@ */
3414 0, /* @tp_descr_set@ */
3415 0, /* @tp_dictoffset@ */
3417 PyType_GenericAlloc
, /* @tp_alloc@ */
3418 abstract_pynew
, /* @tp_new@ */
3423 /*----- Main code ---------------------------------------------------------*/
3425 static PyMethodDef methods
[] = {
3426 #define METHNAME(func) meth_##func
3427 METH (_KeySZ_fromdl
, "\
3428 fromdl(N) -> M: convert integer discrete log field size to work factor")
3429 METH (_KeySZ_fromschnorr
, "\
3430 fromschnorr(N) -> M: convert Schnorr group order to work factor")
3431 METH (_KeySZ_fromif
, "\
3432 fromif(N) -> M: convert integer factorization problem size to work factor")
3433 METH (_KeySZ_fromec
, "\
3434 fromec(N) -> M: convert elliptic curve group order to work factor")
3435 METH (_KeySZ_todl
, "\
3436 todl(N) -> M: convert work factor to integer discrete log field size")
3437 METH (_KeySZ_toschnorr
, "\
3438 toschnorr(N) -> M: convert work factor to Schnorr group order")
3439 METH (_KeySZ_toif
, "\
3440 toif(N) -> M: convert work factor to integer factorization problem size")
3441 METH (_KeySZ_toec
, "\
3442 toec(N) -> M: convert work factor to elliptic curve group order")
3443 METH (_KeySZ_toec
, "\
3444 toec(N) -> M: convert work factor to elliptic curve group order")
3445 #define METH_HDANCE(hdance, HDance) METH(hdance##_prf, "\
3446 " #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
3447 METH_HDANCE(hsalsa20
, "HSalsa20")
3448 METH_HDANCE(hsalsa2012
, "HSalsa20/12")
3449 METH_HDANCE(hsalsa208
, "HSalsa20/8")
3450 METH_HDANCE(hchacha20
, "HChaCha20")
3451 METH_HDANCE(hchacha12
, "HChaCha12")
3452 METH_HDANCE(hchacha8
, "HChaCha8")
3458 void algorithms_pyinit(void)
3460 INITTYPE(keysz
, root
);
3461 INITTYPE(keyszany
, keysz
);
3462 INITTYPE(keyszrange
, keysz
);
3463 INITTYPE(keyszset
, keysz
);
3464 INITTYPE(gccipher
, type
);
3465 INITTYPE(gcipher
, root
);
3466 INITTYPE(gcaead
, type
);
3467 INITTYPE(gaeadkey
, root
);
3468 INITTYPE(gcaeadaad
, type
);
3469 INITTYPE(gaeadaad
, root
);
3470 INITTYPE(gcaeadenc
, type
);
3471 INITTYPE(gaeadenc
, root
);
3472 INITTYPE(gcaeaddec
, type
);
3473 INITTYPE(gaeaddec
, root
);
3474 INITTYPE(gchash
, type
);
3475 INITTYPE(ghash
, root
);
3476 INITTYPE(gcmac
, type
);
3477 INITTYPE(gmac
, type
);
3478 INITTYPE(gmhash
, ghash
);
3479 INITTYPE(poly1305cls
, type
);
3480 INITTYPE_META(poly1305key
, type
, poly1305cls
);
3481 INITTYPE(poly1305hash
, root
);
3482 INITTYPE(kxvik
, root
);
3483 INITTYPE(shake
, root
);
3484 INITTYPE(shake128
, shake
);
3485 INITTYPE(shake256
, shake
);
3486 INITTYPE(gcprp
, type
);
3487 INITTYPE(gprp
, root
);
3488 addmethods(methods
);
3491 GEN(gcciphers
, cipher
)
3495 #define gcprp prpinfo
3498 void algorithms_pyinsert(PyObject
*mod
)
3501 INSERT("KeySZ", keysz_pytype
);
3502 INSERT("KeySZAny", keyszany_pytype
);
3503 INSERT("KeySZRange", keyszrange_pytype
);
3504 INSERT("KeySZSet", keyszset_pytype
);
3505 INSERT("GCCipher", gccipher_pytype
);
3506 INSERT("GCipher", gcipher_pytype
);
3507 INSERT("gcciphers", gcciphers());
3508 INSERT("GCAEAD", gcaead_pytype
);
3509 INSERT("GAEKey", gaeadkey_pytype
);
3510 INSERT("GAEAADClass", gcaeadaad_pytype
);
3511 INSERT("GAEAAD", gaeadaad_pytype
);
3512 INSERT("GAEEncClass", gcaeadenc_pytype
);
3513 INSERT("GAEEnc", gaeadenc_pytype
);
3514 INSERT("GAEDecClass", gcaeaddec_pytype
);
3515 INSERT("GAEDec", gaeaddec_pytype
);
3516 INSERT("gcaeads", gcaeads());
3517 INSERT("GCHash", gchash_pytype
);
3518 INSERT("GHash", ghash_pytype
);
3519 INSERT("gchashes", d
= gchashes());
3520 sha_pyobj
= PyDict_GetItemString(d
, "sha"); Py_INCREF(sha_pyobj
);
3521 has160_pyobj
= PyDict_GetItemString(d
, "has160"); Py_INCREF(has160_pyobj
);
3522 INSERT("GCMAC", gcmac_pytype
);
3523 INSERT("GMAC", gmac_pytype
);
3524 INSERT("GMACHash", gmhash_pytype
);
3525 INSERT("gcmacs", gcmacs());
3526 INSERT("Poly1305Class", poly1305cls_pytype
);
3527 INSERT("poly1305", poly1305key_pytype
);
3528 INSERT("Poly1305Hash", poly1305hash_pytype
);
3529 INSERT("Keccak1600", kxvik_pytype
);
3530 INSERT("Shake", shake_pytype
);
3531 INSERT("Shake128", shake128_pytype
);
3532 INSERT("Shake256", shake256_pytype
);
3533 INSERT("GCPRP", gcprp_pytype
);
3534 INSERT("GPRP", gprp_pytype
);
3535 INSERT("gcprps", gcprps());
3538 /*----- That's all, folks -------------------------------------------------*/