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 static PyTypeObject
*keysz_pytype
;
37 static PyTypeObject
*keyszany_pytype
, *keyszrange_pytype
, *keyszset_pytype
;
39 typedef struct keysz_pyobj
{
44 typedef struct keyszrange_pyobj
{
50 typedef struct keyszset_pyobj
{
56 #define KEYSZ_PYCHECK(o) PyObject_TypeCheck((o), keysz_pytype)
59 # define KSZ_OPMASK 0x1f
63 # define KSZ_16BIT 0x20
66 PyObject
*keysz_pywrap(const octet
*k
)
69 #define ARG(i) (op&KSZ_16BIT ? LOAD16(k + 2*(i)) : k[i])
70 switch (op
&KSZ_OPMASK
) {
72 keysz_pyobj
*o
= PyObject_New(keysz_pyobj
, keyszany_pytype
);
74 return ((PyObject
*)o
);
78 PyObject_New(keyszrange_pyobj
, keyszrange_pytype
);
83 if (!o
->mod
) o
->mod
= 1;
84 return ((PyObject
*)o
);
88 PyObject_New(keyszset_pyobj
, keyszset_pytype
);
91 for (i
= 0; ARG(i
); i
++) ;
92 n
= i
; o
->set
= PyTuple_New(n
);
93 for (i
= 0; i
< n
; i
++)
94 PyTuple_SET_ITEM(o
->set
, i
, PyInt_FromLong(ARG(i
)));
95 return ((PyObject
*)o
);
103 static PyObject
*keyszany_pynew(PyTypeObject
*ty
,
104 PyObject
*arg
, PyObject
*kw
)
106 static const char *const kwlist
[] = { "default", 0 };
110 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i:new", KWLIST
, &dfl
))
112 if (dfl
< 0) VALERR("key size cannot be negative");
113 o
= (keysz_pyobj
*)ty
->tp_alloc(ty
, 0);
115 return ((PyObject
*)o
);
120 static PyObject
*keyszrange_pynew(PyTypeObject
*ty
,
121 PyObject
*arg
, PyObject
*kw
)
123 static const char *const kwlist
[] = { "default", "min", "max", "mod", 0 };
124 int dfl
, min
= 0, max
= 0, mod
= 1;
127 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i|iii:new", KWLIST
,
128 &dfl
, &min
, &max
, &mod
))
130 if (dfl
< 0 || min
< 0) VALERR("key size cannot be negative");
131 if (min
> dfl
|| (max
&& dfl
> max
)) VALERR("bad key size bounds");
132 if (mod
<= 0 || dfl
%mod
|| min
%mod
|| max
%mod
)
133 VALERR("bad key size modulus");
134 o
= (keyszrange_pyobj
*)ty
->tp_alloc(ty
, 0);
139 return ((PyObject
*)o
);
144 static PyObject
*keyszset_pynew(PyTypeObject
*ty
,
145 PyObject
*arg
, PyObject
*kw
)
147 static const char *const kwlist
[] = { "default", "set", 0 };
150 PyObject
*x
= 0, *l
= 0;
151 keyszset_pyobj
*o
= 0;
153 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "i|O:new", KWLIST
, &dfl
, &set
))
155 if (!set
) set
= PyTuple_New(0);
157 if (!PySequence_Check(set
)) TYERR("want a sequence");
158 n
= PySequence_Size(set
); if (n
< 0) goto end
;
159 l
= PyList_New(0); if (!l
) goto end
;
160 if (dfl
< 0) VALERR("key size cannot be negative");
161 x
= PyInt_FromLong(dfl
);
165 for (i
= 0; i
< n
; i
++) {
166 if ((x
= PySequence_GetItem(set
, i
)) == 0) goto end
;
167 xx
= PyInt_AsLong(x
);
168 if (PyErr_Occurred()) goto end
;
169 if (xx
== dfl
) continue;
170 if (xx
< 0) VALERR("key size cannot be negative");
176 if ((set
= PySequence_Tuple(l
)) == 0) goto end
;
177 o
= (keyszset_pyobj
*)ty
->tp_alloc(ty
, 0);
185 return ((PyObject
*)o
);
188 static PyObject
*kaget_min(PyObject
*me
, void *hunoz
)
189 { return (PyInt_FromLong(0)); }
190 #define kaget_max kaget_min
192 static PyObject
*ksget_min(PyObject
*me
, void *hunoz
)
194 PyObject
*set
= ((keyszset_pyobj
*)me
)->set
;
196 n
= PyTuple_GET_SIZE(set
);
197 for (i
= 0; i
< n
; i
++) {
198 y
= PyInt_AS_LONG(PyTuple_GET_ITEM(set
, i
));
199 if (x
== -1 || y
< x
) x
= y
;
201 return (PyInt_FromLong(x
));
204 static PyObject
*ksget_max(PyObject
*me
, void *hunoz
)
206 PyObject
*set
= ((keyszset_pyobj
*)me
)->set
;
208 n
= PyTuple_GET_SIZE(set
);
209 for (i
= 0; i
< n
; i
++) {
210 y
= PyInt_AS_LONG(PyTuple_GET_ITEM(set
, i
));
213 return (PyInt_FromLong(x
));
216 static const PyMemberDef keysz_pymembers
[] = {
217 #define MEMBERSTRUCT keysz_pyobj
218 MEMRNM(default, T_INT
, dfl
, READONLY
, "KSZ.default -> default key size")
223 #define KSZCONVOP(op) \
224 static PyObject *kszmeth_##op(PyObject *me, PyObject *arg) \
227 if (!PyArg_ParseTuple(arg, "d:" #op, &x)) return (0); \
229 return (PyFloat_FromDouble(y)); \
232 KSZCONVOP(fromschnorr
)
241 static const PyMethodDef keysz_pymethods
[] = {
242 #define METHNAME(name) kszmeth_##name
243 SMTH (fromdl
, "fromdl(N) -> M: "
244 "convert integer discrete log field size to work factor")
245 SMTH (fromschnorr
, "fromschnorr(N) -> M: "
246 "convert Schnorr group order to work factor")
247 SMTH (fromif
, "fromif(N) -> M: "
248 "convert integer factorization problem size to work factor")
249 SMTH (fromec
, "fromec(N) -> M: "
250 "convert elliptic curve group order to work factor")
251 SMTH (todl
, "todl(N) -> M: "
252 "convert work factor to integer discrete log field size")
253 SMTH (toschnorr
, "toschnorr(N) -> M: "
254 "convert work factor to Schnorr group order")
255 SMTH (toif
, "toif(N) -> M: "
256 "convert work factor to integer factorization problem size")
257 SMTH (toec
, "toec(N) -> M: "
258 "convert work factor to elliptic curve group order")
259 SMTH (toec
, "toec(N) -> M: "
260 "convert work factor to elliptic curve group order")
265 static const PyGetSetDef keyszany_pygetset
[] = {
266 #define GETSETNAME(op, name) ka##op##_##name
267 GET (min
, "KSZ.min -> smallest allowed key size")
268 GET (max
, "KSZ.max -> largest allowed key size")
273 static const PyMemberDef keyszrange_pymembers
[] = {
274 #define MEMBERSTRUCT keyszrange_pyobj
275 MEMBER(min
, T_INT
, READONLY
, "KSZ.min -> smallest allowed key size")
276 MEMBER(max
, T_INT
, READONLY
, "KSZ.max -> largest allowed key size")
277 MEMBER(mod
, T_INT
, READONLY
,
278 "KSZ.mod -> key size must be a multiple of this")
283 static const PyGetSetDef keyszset_pygetset
[] = {
284 #define GETSETNAME(op, name) ks##op##_##name
285 GET (min
, "KSZ.min -> smallest allowed key size")
286 GET (max
, "KSZ.max -> largest allowed key size")
291 static const PyMemberDef keyszset_pymembers
[] = {
292 #define MEMBERSTRUCT keyszset_pyobj
293 MEMBER(set
, T_OBJECT
, READONLY
, "KSZ.set -> allowed key sizes")
298 static const PyTypeObject keysz_pytype_skel
= {
299 PyObject_HEAD_INIT(0) 0, /* Header */
300 "KeySZ", /* @tp_name@ */
301 sizeof(keysz_pyobj
), /* @tp_basicsize@ */
302 0, /* @tp_itemsize@ */
304 0, /* @tp_dealloc@ */
306 0, /* @tp_getattr@ */
307 0, /* @tp_setattr@ */
308 0, /* @tp_compare@ */
310 0, /* @tp_as_number@ */
311 0, /* @tp_as_sequence@ */
312 0, /* @tp_as_mapping@ */
316 0, /* @tp_getattro@ */
317 0, /* @tp_setattro@ */
318 0, /* @tp_as_buffer@ */
319 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
323 "Key size constraints. Abstract.",
325 0, /* @tp_traverse@ */
327 0, /* @tp_richcompare@ */
328 0, /* @tp_weaklistoffset@ */
330 0, /* @tp_iternext@ */
331 PYMETHODS(keysz
), /* @tp_methods@ */
332 PYMEMBERS(keysz
), /* @tp_members@ */
336 0, /* @tp_descr_get@ */
337 0, /* @tp_descr_set@ */
338 0, /* @tp_dictoffset@ */
340 PyType_GenericAlloc
, /* @tp_alloc@ */
341 abstract_pynew
, /* @tp_new@ */
346 static const PyTypeObject keyszany_pytype_skel
= {
347 PyObject_HEAD_INIT(0) 0, /* Header */
348 "KeySZAny", /* @tp_name@ */
349 sizeof(keysz_pyobj
), /* @tp_basicsize@ */
350 0, /* @tp_itemsize@ */
352 0, /* @tp_dealloc@ */
354 0, /* @tp_getattr@ */
355 0, /* @tp_setattr@ */
356 0, /* @tp_compare@ */
358 0, /* @tp_as_number@ */
359 0, /* @tp_as_sequence@ */
360 0, /* @tp_as_mapping@ */
364 0, /* @tp_getattro@ */
365 0, /* @tp_setattro@ */
366 0, /* @tp_as_buffer@ */
367 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
371 "KeySZAny(DEFAULT)\n"
372 " Key size constraints. This object imposes no constraints on size.",
374 0, /* @tp_traverse@ */
376 0, /* @tp_richcompare@ */
377 0, /* @tp_weaklistoffset@ */
379 0, /* @tp_iternext@ */
380 0, /* @tp_methods@ */
381 0, /* @tp_members@ */
382 PYGETSET(keyszany
), /* @tp_getset@ */
385 0, /* @tp_descr_get@ */
386 0, /* @tp_descr_set@ */
387 0, /* @tp_dictoffset@ */
389 PyType_GenericAlloc
, /* @tp_alloc@ */
390 keyszany_pynew
, /* @tp_new@ */
395 static const PyTypeObject keyszrange_pytype_skel
= {
396 PyObject_HEAD_INIT(0) 0, /* Header */
397 "KeySZRange", /* @tp_name@ */
398 sizeof(keyszrange_pyobj
), /* @tp_basicsize@ */
399 0, /* @tp_itemsize@ */
401 0, /* @tp_dealloc@ */
403 0, /* @tp_getattr@ */
404 0, /* @tp_setattr@ */
405 0, /* @tp_compare@ */
407 0, /* @tp_as_number@ */
408 0, /* @tp_as_sequence@ */
409 0, /* @tp_as_mapping@ */
413 0, /* @tp_getattro@ */
414 0, /* @tp_setattro@ */
415 0, /* @tp_as_buffer@ */
416 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
420 "KeySZRange(DEFAULT, [min = 0], [max = 0], [mod = 1])\n"
421 " Key size constraints: size must be between MIN and MAX inclusive, and\n"
422 " be a multiple of MOD.",
424 0, /* @tp_traverse@ */
426 0, /* @tp_richcompare@ */
427 0, /* @tp_weaklistoffset@ */
429 0, /* @tp_iternext@ */
430 0, /* @tp_methods@ */
431 PYMEMBERS(keyszrange
), /* @tp_members@ */
435 0, /* @tp_descr_get@ */
436 0, /* @tp_descr_set@ */
437 0, /* @tp_dictoffset@ */
439 PyType_GenericAlloc
, /* @tp_alloc@ */
440 keyszrange_pynew
, /* @tp_new@ */
445 static const PyTypeObject keyszset_pytype_skel
= {
446 PyObject_HEAD_INIT(0) 0, /* Header */
447 "KeySZSet", /* @tp_name@ */
448 sizeof(keyszset_pyobj
), /* @tp_basicsize@ */
449 0, /* @tp_itemsize@ */
451 0, /* @tp_dealloc@ */
453 0, /* @tp_getattr@ */
454 0, /* @tp_setattr@ */
455 0, /* @tp_compare@ */
457 0, /* @tp_as_number@ */
458 0, /* @tp_as_sequence@ */
459 0, /* @tp_as_mapping@ */
463 0, /* @tp_getattro@ */
464 0, /* @tp_setattro@ */
465 0, /* @tp_as_buffer@ */
466 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
470 "KeySZSet(DEFAULT, SEQ)\n"
471 " Key size constraints: size must be DEFAULT or an element of SEQ.",
473 0, /* @tp_traverse@ */
475 0, /* @tp_richcompare@ */
476 0, /* @tp_weaklistoffset@ */
478 0, /* @tp_iternext@ */
479 0, /* @tp_methods@ */
480 PYMEMBERS(keyszset
), /* @tp_members@ */
481 PYGETSET(keyszset
), /* @tp_getset@ */
484 0, /* @tp_descr_get@ */
485 0, /* @tp_descr_set@ */
486 0, /* @tp_dictoffset@ */
488 PyType_GenericAlloc
, /* @tp_alloc@ */
489 keyszset_pynew
, /* @tp_new@ */
494 /*----- Symmetric encryption ----------------------------------------------*/
496 static PyTypeObject
*gccipher_pytype
, *gcipher_pytype
;
498 typedef struct gccipher_pyobj
{
503 #define GCCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gccipher_pytype)
504 #define GCCIPHER_CC(o) (((gccipher_pyobj *)(o))->cc)
506 typedef struct gcipher_pyobj
{
511 #define GCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gcipher_pytype)
512 #define GCIPHER_C(o) (((gcipher_pyobj *)(o))->c)
514 CONVFUNC(gccipher
, gccipher
*, GCCIPHER_CC
)
516 static PyObject
*gcipher_pywrap(PyObject
*cobj
, gcipher
*c
)
519 if (!cobj
) cobj
= gccipher_pywrap((/*unconst*/ gccipher
*)GC_CLASS(c
));
520 else Py_INCREF(cobj
);
521 g
= PyObject_NEW(gcipher_pyobj
, (PyTypeObject
*)cobj
);
523 return ((PyObject
*)g
);
526 static PyObject
*gcipher_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
528 static const char *const kwlist
[] = { "k", 0 };
532 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
534 if (keysz(sz
, GCCIPHER_CC(ty
)->keysz
) != sz
) VALERR("bad key length");
535 return (gcipher_pywrap((PyObject
*)ty
,
536 GC_INIT(GCCIPHER_CC(ty
), k
, sz
)));
541 PyObject
*gccipher_pywrap(gccipher
*cc
)
543 gccipher_pyobj
*g
= newtype(gccipher_pytype
, 0, cc
->name
);
545 g
->ty
.ht_type
.tp_basicsize
= sizeof(gcipher_pyobj
);
546 g
->ty
.ht_type
.tp_base
= gcipher_pytype
;
547 Py_INCREF(gcipher_pytype
);
548 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
549 Py_TPFLAGS_BASETYPE
|
550 Py_TPFLAGS_HEAPTYPE
);
551 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
552 g
->ty
.ht_type
.tp_free
= 0;
553 g
->ty
.ht_type
.tp_new
= gcipher_pynew
;
554 typeready(&g
->ty
.ht_type
);
555 return ((PyObject
*)g
);
558 static void gcipher_pydealloc(PyObject
*me
)
560 GC_DESTROY(GCIPHER_C(me
));
561 Py_DECREF(me
->ob_type
);
565 static PyObject
*gccget_name(PyObject
*me
, void *hunoz
)
566 { return (PyString_FromString(GCCIPHER_CC(me
)->name
)); }
568 static PyObject
*gccget_keysz(PyObject
*me
, void *hunoz
)
569 { return (keysz_pywrap(GCCIPHER_CC(me
)->keysz
)); }
571 static PyObject
*gccget_blksz(PyObject
*me
, void *hunoz
)
572 { return (PyInt_FromLong(GCCIPHER_CC(me
)->blksz
)); }
574 static PyObject
*gcmeth_encrypt(PyObject
*me
, PyObject
*arg
)
580 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &p
, &sz
)) return (0);
581 rc
= bytestring_pywrap(0, sz
);
582 GC_ENCRYPT(GCIPHER_C(me
), p
, PyString_AS_STRING(rc
), sz
);
586 static PyObject
*gcmeth_enczero(PyObject
*me
, PyObject
*arg
)
592 if (!PyArg_ParseTuple(arg
, "i:enczero", &sz
)) return (0);
593 rc
= bytestring_pywrap(0, sz
);
594 p
= PyString_AS_STRING(rc
);
596 GC_ENCRYPT(GCIPHER_C(me
), p
, p
, sz
);
600 static PyObject
*gcmeth_decrypt(PyObject
*me
, PyObject
*arg
)
606 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &p
, &sz
)) return (0);
607 rc
= bytestring_pywrap(0, sz
);
608 GC_DECRYPT(GCIPHER_C(me
), p
, PyString_AS_STRING(rc
), sz
);
612 static PyObject
*gcmeth_deczero(PyObject
*me
, PyObject
*arg
)
618 if (!PyArg_ParseTuple(arg
, "i:deczero", &sz
)) return (0);
619 rc
= bytestring_pywrap(0, sz
);
620 p
= PyString_AS_STRING(rc
);
622 GC_DECRYPT(GCIPHER_C(me
), p
, p
, sz
);
626 static PyObject
*gcmeth_setiv(PyObject
*me
, PyObject
*arg
)
631 if (!PyArg_ParseTuple(arg
, "s#:setiv", &p
, &sz
)) goto end
;
632 if (!GCIPHER_C(me
)->ops
->setiv
) VALERR("`setiv' not supported");
633 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
634 if (sz
!= GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("bad IV length");
635 GC_SETIV(GCIPHER_C(me
), p
);
641 static PyObject
*gcmeth_bdry(PyObject
*me
)
643 if (!GCIPHER_C(me
)->ops
->bdry
) VALERR("`bdry' not supported");
644 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
645 GC_BDRY(GCIPHER_C(me
));
651 static const PyGetSetDef gccipher_pygetset
[] = {
652 #define GETSETNAME(op, name) gcc##op##_##name
653 GET (keysz
, "CC.keysz -> acceptable key sizes")
654 GET (blksz
, "CC.blksz -> block size, or zero")
655 GET (name
, "CC.name -> name of this kind of cipher")
660 static const PyMethodDef gcipher_pymethods
[] = {
661 #define METHNAME(name) gcmeth_##name
662 METH (encrypt
, "C.encrypt(PT) -> CT")
663 METH (enczero
, "C.enczero(N) -> CT")
664 METH (decrypt
, "C.decrypt(CT) -> PT")
665 METH (deczero
, "C.deczero(N) -> PT")
666 METH (setiv
, "C.setiv(IV)")
667 NAMETH(bdry
, "C.bdry()")
672 static const PyTypeObject gccipher_pytype_skel
= {
673 PyObject_HEAD_INIT(0) 0, /* Header */
674 "GCCipher", /* @tp_name@ */
675 sizeof(gccipher_pyobj
), /* @tp_basicsize@ */
676 0, /* @tp_itemsize@ */
678 0, /* @tp_dealloc@ */
680 0, /* @tp_getattr@ */
681 0, /* @tp_setattr@ */
682 0, /* @tp_compare@ */
684 0, /* @tp_as_number@ */
685 0, /* @tp_as_sequence@ */
686 0, /* @tp_as_mapping@ */
690 0, /* @tp_getattro@ */
691 0, /* @tp_setattro@ */
692 0, /* @tp_as_buffer@ */
693 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
697 "Symmetric cipher metaclass.",
699 0, /* @tp_traverse@ */
701 0, /* @tp_richcompare@ */
702 0, /* @tp_weaklistoffset@ */
704 0, /* @tp_iternext@ */
705 0, /* @tp_methods@ */
706 0, /* @tp_members@ */
707 PYGETSET(gccipher
), /* @tp_getset@ */
710 0, /* @tp_descr_get@ */
711 0, /* @tp_descr_set@ */
712 0, /* @tp_dictoffset@ */
714 PyType_GenericAlloc
, /* @tp_alloc@ */
715 abstract_pynew
, /* @tp_new@ */
720 static const PyTypeObject gcipher_pytype_skel
= {
721 PyObject_HEAD_INIT(0) 0, /* Header */
722 "GCipher", /* @tp_name@ */
723 sizeof(gcipher_pyobj
), /* @tp_basicsize@ */
724 0, /* @tp_itemsize@ */
726 gcipher_pydealloc
, /* @tp_dealloc@ */
728 0, /* @tp_getattr@ */
729 0, /* @tp_setattr@ */
730 0, /* @tp_compare@ */
732 0, /* @tp_as_number@ */
733 0, /* @tp_as_sequence@ */
734 0, /* @tp_as_mapping@ */
738 0, /* @tp_getattro@ */
739 0, /* @tp_setattro@ */
740 0, /* @tp_as_buffer@ */
741 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
745 "Symmetric cipher, abstract base class.",
747 0, /* @tp_traverse@ */
749 0, /* @tp_richcompare@ */
750 0, /* @tp_weaklistoffset@ */
752 0, /* @tp_iternext@ */
753 PYMETHODS(gcipher
), /* @tp_methods@ */
754 0, /* @tp_members@ */
758 0, /* @tp_descr_get@ */
759 0, /* @tp_descr_set@ */
760 0, /* @tp_dictoffset@ */
762 PyType_GenericAlloc
, /* @tp_alloc@ */
763 abstract_pynew
, /* @tp_new@ */
768 /*----- Authenticated encryption ------------------------------------------*/
770 static PyTypeObject
*gcaead_pytype
, *gaeadkey_pytype
;
771 static PyTypeObject
*gcaeadaad_pytype
, *gaeadaad_pytype
;
772 static PyTypeObject
*gcaeadenc_pytype
, *gaeadenc_pytype
;
773 static PyTypeObject
*gcaeaddec_pytype
, *gaeaddec_pytype
;
775 typedef struct gcaead_pyobj
{
778 struct gcaeadaad_pyobj
*aad
;
779 struct gcaeadenc_pyobj
*enc
;
780 struct gcaeaddec_pyobj
*dec
;
783 #define GCAEAD_PYCHECK(o) PyObject_TypeCheck((o), gcaead_pytype)
784 #define GCAEAD_AEC(o) (((gcaead_pyobj *)(o))->aec)
785 #define GCAEAD_AAD(o) (((gcaead_pyobj *)(o))->aad)
786 #define GCAEAD_ENC(o) (((gcaead_pyobj *)(o))->enc)
787 #define GCAEAD_DEC(o) (((gcaead_pyobj *)(o))->dec)
788 static PyObject
*gcaead_pywrap(gcaead
*);
790 typedef struct gaeadkey_pyobj
{
795 #define GAEADKEY_PYCHECK(o) PyObject_TypeCheck((o), gaeadkey_pytype)
796 #define GAEADKEY_K(o) (((gaeadkey_pyobj *)(o))->k)
798 typedef struct gcaeadaad_pyobj
{
803 #define GCAEADAAD_KEY(o) (((gcaeadaad_pyobj *)(o))->key)
804 static PyObject
*gaeadaad_pywrap(PyObject
*, gaead_aad
*, unsigned, size_t);
806 typedef struct gaeadaad_pyobj
{
810 #define AEADF_DEAD 32768u
814 #define GAEADAAD_PYCHECK(o) PyObject_TypeCheck((o), gaeadaad_pytype)
815 #define GAEADAAD_A(o) (((gaeadaad_pyobj *)(o))->a)
816 #define GAEADAAD_F(o) (((gaeadaad_pyobj *)(o))->f)
817 #define GAEADAAD_HSZ(o) (((gaeadaad_pyobj *)(o))->hsz)
818 #define GAEADAAD_HLEN(o) (((gaeadaad_pyobj *)(o))->hlen)
820 typedef struct gcaeadenc_pyobj
{
825 #define GCAEADENC_KEY(o) (((gcaeadenc_pyobj *)(o))->key)
826 static PyObject
*gaeadenc_pywrap(PyObject
*, gaead_enc
*, unsigned,
827 size_t, size_t, size_t);
829 typedef struct gaeadenc_pyobj
{
834 size_t hsz
, msz
, tsz
;
838 #define GAEADENC_PYCHECK(o) PyObject_TypeCheck((o), gaeadenc_pytype)
839 #define GAEADENC_AAD(o) (((gaeadenc_pyobj *)(o))->aad)
840 #define GAEADENC_E(o) (((gaeadenc_pyobj *)(o))->e)
841 #define GAEADENC_F(o) (((gaeadenc_pyobj *)(o))->f)
842 #define GAEADENC_HSZ(o) (((gaeadenc_pyobj *)(o))->hsz)
843 #define GAEADENC_MSZ(o) (((gaeadenc_pyobj *)(o))->msz)
844 #define GAEADENC_TSZ(o) (((gaeadenc_pyobj *)(o))->tsz)
845 #define GAEADENC_MLEN(o) (((gaeadenc_pyobj *)(o))->mlen)
847 typedef struct gcaeaddec_pyobj
{
852 #define GCAEADDEC_KEY(o) (((gcaeaddec_pyobj *)(o))->key)
853 static PyObject
*gaeaddec_pywrap(PyObject
*, gaead_dec
*, unsigned,
854 size_t, size_t, size_t);
856 typedef struct gaeaddec_pyobj
{
861 size_t hsz
, csz
, tsz
;
865 #define GAEADDEC_PYCHECK(o) PyObject_TypeCheck((o), gaeaddec_pytype)
866 #define GAEADDEC_AAD(o) (((gaeaddec_pyobj *)(o))->aad)
867 #define GAEADDEC_D(o) (((gaeaddec_pyobj *)(o))->d)
868 #define GAEADDEC_F(o) (((gaeaddec_pyobj *)(o))->f)
869 #define GAEADDEC_HSZ(o) (((gaeaddec_pyobj *)(o))->hsz)
870 #define GAEADDEC_CSZ(o) (((gaeaddec_pyobj *)(o))->csz)
871 #define GAEADDEC_TSZ(o) (((gaeaddec_pyobj *)(o))->tsz)
872 #define GAEADDEC_CLEN(o) (((gaeaddec_pyobj *)(o))->clen)
874 static PyObject
*gaeadkey_pywrap(PyObject
*cobj
, gaead_key
*k
)
878 if (!cobj
) cobj
= gcaead_pywrap((/*unconst*/ gcaead
*)GAEAD_CLASS(k
));
879 else Py_INCREF(cobj
);
880 gk
= PyObject_NEW(gaeadkey_pyobj
, (PyTypeObject
*)cobj
);
882 return ((PyObject
*)gk
);
885 static PyObject
*gaeadkey_pynew(PyTypeObject
*ty
,
886 PyObject
*arg
, PyObject
*kw
)
888 static const char *const kwlist
[] = { "k", 0 };
892 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
894 if (keysz(sz
, GCAEAD_AEC(ty
)->keysz
) != sz
) VALERR("bad key length");
895 return (gaeadkey_pywrap((PyObject
*)ty
,
896 GAEAD_KEY(GCAEAD_AEC(ty
), k
, sz
)));
901 static PyObject
*gcaead_pywrap(gcaead
*aec
)
904 gcaeadaad_pyobj
*gca
;
905 gcaeadenc_pyobj
*gce
;
906 gcaeaddec_pyobj
*gcd
;
908 #define MKTYPE(obj, thing, newfn, namefmt) do { \
909 (obj) = newtype(gcaead_pytype, 0, 0); \
910 (obj)->ty.ht_name = PyString_FromFormat(namefmt, aec->name); \
911 (obj)->ty.ht_type.tp_name = PyString_AS_STRING((obj)->ty.ht_name); \
912 (obj)->ty.ht_type.tp_basicsize = sizeof(gaead##thing##_pyobj); \
913 (obj)->ty.ht_type.tp_base = gaead##thing##_pytype; \
914 Py_INCREF(gaead##thing##_pytype); \
915 (obj)->ty.ht_type.tp_flags = \
916 (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE); \
917 (obj)->ty.ht_type.tp_alloc = PyType_GenericAlloc; \
918 (obj)->ty.ht_type.tp_free = 0; \
919 (obj)->ty.ht_type.tp_new = newfn; \
920 typeready(&(obj)->ty.ht_type); \
923 MKTYPE(gck
, key
, gaeadkey_pynew
, "%s(key)");
924 MKTYPE(gca
, aad
, abstract_pynew
, "%s(aad-hash)");
925 MKTYPE(gce
, enc
, abstract_pynew
, "%s(encrypt)");
926 MKTYPE(gcd
, dec
, abstract_pynew
, "%s(decrypt)");
930 gck
->aec
= aec
; gck
->aad
= gca
; gck
->enc
= gce
; gck
->dec
= gcd
;
931 gca
->key
= gce
->key
= gcd
->key
= gck
;
932 return ((PyObject
*)gck
);
935 static void gaeadkey_pydealloc(PyObject
*me
)
936 { GAEAD_DESTROY(GAEADKEY_K(me
)); Py_DECREF(me
->ob_type
); FREEOBJ(me
); }
938 static PyObject
*gcaeget_name(PyObject
*me
, void *hunoz
)
939 { return (PyString_FromString(GCAEAD_AEC(me
)->name
)); }
941 static PyObject
*gcaeget_keysz(PyObject
*me
, void *hunoz
)
942 { return (keysz_pywrap(GCAEAD_AEC(me
)->keysz
)); }
944 static PyObject
*gcaeget_noncesz(PyObject
*me
, void *hunoz
)
945 { return (keysz_pywrap(GCAEAD_AEC(me
)->noncesz
)); }
947 static PyObject
*gcaeget_tagsz(PyObject
*me
, void *hunoz
)
948 { return (keysz_pywrap(GCAEAD_AEC(me
)->tagsz
)); }
950 static PyObject
*gcaeget_blksz(PyObject
*me
, void *hunoz
)
951 { return (PyInt_FromLong(GCAEAD_AEC(me
)->blksz
)); }
953 static PyObject
*gcaeget_bufsz(PyObject
*me
, void *hunoz
)
954 { return (PyInt_FromLong(GCAEAD_AEC(me
)->bufsz
)); }
956 static PyObject
*gcaeget_ohd(PyObject
*me
, void *hunoz
)
957 { return (PyInt_FromLong(GCAEAD_AEC(me
)->ohd
)); }
959 static PyObject
*gcaeget_flags(PyObject
*me
, void *hunoz
)
960 { return (PyInt_FromLong(GCAEAD_AEC(me
)->f
)); }
962 static const PyGetSetDef gcaead_pygetset
[] = {
963 #define GETSETNAME(op, name) gcae##op##_##name
964 GET (keysz
, "AEC.keysz -> acceptable key sizes")
965 GET (noncesz
, "AEC.noncesz -> acceptable nonce sizes")
966 GET (tagsz
, "AEC.tagsz -> acceptable tag sizes")
967 GET (blksz
, "AEC.blksz -> block size, or zero")
968 GET (bufsz
, "AEC.bufsz -> amount of data buffered internally")
969 GET (ohd
, "AEC.ohd -> maximum encryption overhead")
970 GET (name
, "AEC.name -> name of this kind of AEAD scheme")
971 GET (flags
, "AEC.flags -> mask of `AEADF_...' flags")
976 static PyObject
*gaekmeth_aad(PyObject
*me
)
978 const gaead_key
*k
= GAEADKEY_K(me
);
981 if (k
->ops
->c
->f
&AEADF_AADNDEP
)
982 VALERR("aad must be associated with enc/dec op");
983 rc
= gaeadaad_pywrap((PyObject
*)GCAEAD_AAD(me
->ob_type
),
989 static int check_aead_encdec(const gcaead
*aec
, unsigned *f_out
, size_t nsz
,
990 PyObject
*hszobj
, size_t *hsz_out
,
991 PyObject
*mszobj
, size_t *msz_out
,
992 PyObject
*tszobj
, size_t *tsz_out
)
994 unsigned f
= 0, miss
;
997 if (hszobj
!= Py_None
)
998 { f
|= AEADF_PCHSZ
; if (!convszt(hszobj
, hsz_out
)) goto end
; }
999 if (mszobj
!= Py_None
)
1000 { f
|= AEADF_PCMSZ
; if (!convszt(mszobj
, msz_out
)) goto end
; }
1001 if (tszobj
!= Py_None
)
1002 { f
|= AEADF_PCTSZ
; if (!convszt(tszobj
, tsz_out
)) goto end
; }
1004 if (miss
&AEADF_PCHSZ
) VALERR("header length precommitment required");
1005 if (miss
&AEADF_PCMSZ
) VALERR("message length precommitment required");
1006 if (miss
&AEADF_PCTSZ
) VALERR("tag length precommitment required");
1007 if (keysz(nsz
, aec
->noncesz
) != nsz
) VALERR("bad nonce length");
1008 if (tszobj
!= Py_None
&& keysz(*tsz_out
, aec
->tagsz
) != *tsz_out
)
1009 VALERR("bad tag length");
1010 *f_out
= f
| aec
->f
; rc
= 0;
1015 static PyObject
*gaekmeth_enc(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1017 static const char *const kwlist
[] = { "nonce", "hsz", "msz", "tsz", 0 };
1018 const gaead_key
*k
= GAEADKEY_K(me
);
1021 char *n
; Py_ssize_t nsz
;
1022 PyObject
*hszobj
= Py_None
, *mszobj
= Py_None
, *tszobj
= Py_None
;
1023 size_t hsz
= 0, msz
= 0, tsz
= 0;
1026 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
1027 &n
, &nsz
, &hszobj
, &mszobj
, &tszobj
))
1029 if (check_aead_encdec(k
->ops
->c
, &f
, nsz
,
1030 hszobj
, &hsz
, mszobj
, &msz
, tszobj
, &tsz
))
1032 e
= GAEAD_ENC(GAEADKEY_K(me
), n
, nsz
, hsz
, msz
, tsz
);
1033 if (!e
) VALERR("bad aead parameter combination");
1034 rc
= gaeadenc_pywrap((PyObject
*)GCAEAD_ENC(me
->ob_type
),
1035 e
, f
, hsz
, msz
, tsz
);
1040 static PyObject
*gaekmeth_dec(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1042 static const char *const kwlist
[] = { "nonce", "hsz", "csz", "tsz", 0 };
1043 const gaead_key
*k
= GAEADKEY_K(me
);
1046 char *n
; Py_ssize_t nsz
;
1047 PyObject
*hszobj
= Py_None
, *cszobj
= Py_None
, *tszobj
= Py_None
;
1048 size_t hsz
= 0, csz
= 0, tsz
= 0;
1051 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:dec", KWLIST
,
1052 &n
, &nsz
, &hszobj
, &cszobj
, &tszobj
))
1054 if (check_aead_encdec(k
->ops
->c
, &f
, nsz
,
1055 hszobj
, &hsz
, cszobj
, &csz
, tszobj
, &tsz
))
1057 d
= GAEAD_DEC(GAEADKEY_K(me
), n
, nsz
, hsz
, csz
, tsz
);
1058 if (!d
) VALERR("bad aead parameter combination");
1059 rc
= gaeaddec_pywrap((PyObject
*)GCAEAD_DEC(me
->ob_type
),
1060 d
, f
, hsz
, csz
, tsz
);
1065 static const PyMethodDef gaeadkey_pymethods
[] = {
1066 #define METHNAME(name) gaekmeth_##name
1067 NAMETH(aad
, "KEY.aad() -> AAD")
1068 KWMETH(enc
, "KEY.enc(NONCE, [hsz], [msz], [tsz]) -> ENC")
1069 KWMETH(dec
, "KEY.dec(NONCE, [hsz], [csz], [tsz]) -> DEC")
1074 static PyObject
*gaeadaad_pywrap(PyObject
*cobj
, gaead_aad
*a
,
1075 unsigned f
, size_t hsz
)
1079 assert(cobj
); Py_INCREF(cobj
);
1080 ga
= PyObject_NEW(gaeadaad_pyobj
, (PyTypeObject
*)cobj
);
1081 ga
->a
= a
; ga
->f
= f
; ga
->hsz
= hsz
; ga
->hlen
= 0;
1082 return ((PyObject
*)ga
);
1085 static void gaeadaad_pydealloc(PyObject
*me
)
1087 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1089 if (ga
->a
) GAEAD_DESTROY(ga
->a
);
1090 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
1093 static int gaea_check(PyObject
*me
)
1095 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1098 if ((ga
->f
&AEADF_DEAD
) || !ga
->a
) VALERR("aad object no longer active");
1104 static void gaea_invalidate(gaeadaad_pyobj
*ga
)
1105 { if (ga
) ga
->f
|= AEADF_DEAD
; }
1107 static void gaea_sever(gaeadaad_pyobj
**ga_inout
)
1109 gaeadaad_pyobj
*ga
= *ga_inout
;
1110 if (ga
) { ga
->f
|= AEADF_DEAD
; ga
->a
= 0; Py_DECREF(ga
); *ga_inout
= 0; }
1113 static PyObject
*gaeaget_hsz(PyObject
*me
, void *hunoz
)
1115 if (gaea_check(me
)) return (0);
1116 else if (GAEADAAD_F(me
)&AEADF_PCHSZ
) return getulong(GAEADAAD_HSZ(me
));
1120 static PyObject
*gaeaget_hlen(PyObject
*me
, void *hunoz
)
1121 { return (gaea_check(me
) ?
0 : getulong(GAEADAAD_HLEN(me
))); }
1123 static const PyGetSetDef gaeadaad_pygetset
[] = {
1124 #define GETSETNAME(op, name) gaea##op##_##name
1125 GET (hsz
, "AAD.hsz -> precommitted header length or `None'")
1126 GET (hlen
, "AAD.hlen -> header length so far")
1131 static PyObject
*gaeameth_copy(PyObject
*me
)
1135 if (gaea_check(me
)) goto end
;
1136 if (GAEADAAD_F(me
)&AEADF_AADNDEP
)
1137 VALERR("can't duplicate nonce-dependent aad");
1138 rc
= gaeadaad_pywrap((PyObject
*)me
->ob_type
,
1139 GAEAD_DUP(GAEADAAD_A(me
)), 0, 0);
1140 GAEADAAD_HLEN(rc
) = GAEADAAD_HLEN(me
);
1145 static int gaeadaad_hash(PyObject
*me
, const void *h
, size_t hsz
)
1147 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1150 if (gaea_check(me
)) goto end
;
1151 if ((ga
->f
&AEADF_NOAAD
) && hsz
)
1152 VALERR("header data not permitted");
1153 if ((ga
->f
&AEADF_PCHSZ
) && hsz
> ga
->hsz
- ga
->hlen
)
1154 VALERR("too large for precommitted header length");
1155 GAEAD_HASH(ga
->a
, h
, hsz
); ga
->hlen
+= hsz
;
1162 static PyObject
*gaeameth_hash(PyObject
*me
, PyObject
*arg
)
1164 char *h
; Py_ssize_t hsz
;
1166 if (!PyArg_ParseTuple(arg
, "s#:hash", &h
, &hsz
)) return (0);
1167 if (gaeadaad_hash(me
, h
, hsz
)) return (0);
1171 #define GAEAMETH_HASHU_(n, W, w) \
1172 static PyObject *gaeameth_hashu##w(PyObject *me, PyObject *arg) \
1174 uint##n x; octet b[SZ_##W]; \
1175 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
1176 STORE##W(b, x); if (gaeadaad_hash(me, b, sizeof(b))) return (0); \
1179 DOUINTCONV(GAEAMETH_HASHU_
)
1181 #define GAEAMETH_HASHBUF_(n, W, w) \
1182 static PyObject *gaeameth_hashbuf##w(PyObject *me, PyObject *arg) \
1184 char *p; Py_ssize_t sz; octet b[SZ_##W]; \
1185 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1186 if (sz > MASK##n) TYERR("string too long"); \
1187 STORE##W(b, sz); if (gaeadaad_hash(me, b, sizeof(b))) goto end; \
1188 if (gaeadaad_hash(me, p, sz)) goto end; \
1193 DOUINTCONV(GAEAMETH_HASHBUF_
)
1195 static PyObject
*gaeameth_hashstrz(PyObject
*me
, PyObject
*arg
)
1198 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
1199 if (gaeadaad_hash(me
, p
, strlen(p
) + 1)) return (0);
1203 static const PyMethodDef gaeadaad_pymethods
[] = {
1204 #define METHNAME(name) gaeameth_##name
1205 NAMETH(copy
, "AAD.copy() -> AAD'")
1206 METH (hash
, "AAD.hash(H)")
1207 #define METHU_(n, W, w) METH(hashu##w, "AAD.hashu" #w "(WORD)")
1210 #define METHBUF_(n, W, w) METH(hashbuf##w, "AAD.hashbuf" #w "(BYTES)")
1211 DOUINTCONV(METHBUF_
)
1213 METH (hashstrz
, "AAD.hashstrz(STRING)")
1218 static PyObject
*gaeadenc_pywrap(PyObject
*cobj
, gaead_enc
*e
, unsigned f
,
1219 size_t hsz
, size_t msz
, size_t tsz
)
1223 assert(cobj
); Py_INCREF(cobj
);
1224 ge
= PyObject_NEW(gaeadenc_pyobj
, (PyTypeObject
*)cobj
);
1225 ge
->e
= e
; ge
->f
= f
; ge
->hsz
= hsz
; ge
->msz
= msz
; ge
->tsz
= tsz
;
1226 ge
->aad
= 0; ge
->mlen
= 0;
1227 return ((PyObject
*)ge
);
1230 static void gaeadenc_pydealloc(PyObject
*me
)
1232 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1234 gaea_sever(&ge
->aad
); GAEAD_DESTROY(ge
->e
);
1235 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
1238 static PyObject
*gaeeget_hsz(PyObject
*me
, void *hunoz
)
1240 if (GAEADENC_F(me
)&AEADF_PCHSZ
) return getulong(GAEADENC_HSZ(me
));
1244 static PyObject
*gaeeget_msz(PyObject
*me
, void *hunoz
)
1246 if (GAEADENC_F(me
)&AEADF_PCMSZ
) return getulong(GAEADENC_MSZ(me
));
1250 static PyObject
*gaeeget_tsz(PyObject
*me
, void *hunoz
)
1252 if (GAEADENC_F(me
)&AEADF_PCTSZ
) return getulong(GAEADENC_TSZ(me
));
1256 static PyObject
*gaeeget_mlen(PyObject
*me
, void *hunoz
)
1257 { return getulong(GAEADENC_MLEN(me
)); }
1259 static const PyGetSetDef gaeadenc_pygetset
[] = {
1260 #define GETSETNAME(op, name) gaee##op##_##name
1261 GET (hsz
, "ENC.hsz -> precommitted header length or `None'")
1262 GET (msz
, "ENC.msz -> precommitted message length or `None'")
1263 GET (tsz
, "ENC.tsz -> precommitted tag length or `None'")
1264 GET (mlen
, "ENC.mlen -> message length so far")
1269 static PyObject
*gaeemeth_aad(PyObject
*me
)
1271 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1274 if (!(ge
->f
&AEADF_AADNDEP
))
1275 rc
= gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(ge
->ob_type
)->aad
,
1276 GAEAD_AAD(ge
->e
), 0, 0);
1278 if ((ge
->f
&AEADF_AADFIRST
) && ge
->mlen
)
1279 VALERR("too late for aad");
1281 ge
->aad
= (gaeadaad_pyobj
*)
1282 gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(ge
->ob_type
)->aad
,
1283 GAEAD_AAD(ge
->e
), ge
->f
&(AEADF_PCHSZ
| AEADF_NOAAD
),
1286 rc
= (PyObject
*)ge
->aad
;
1292 static PyObject
*gaeemeth_reinit(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1294 static const char *const kwlist
[] = { "nonce", "hsz", "msz", "tsz", 0 };
1295 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1296 char *n
; Py_ssize_t nsz
;
1297 PyObject
*hszobj
= Py_None
, *mszobj
= Py_None
, *tszobj
= Py_None
;
1298 size_t hsz
= 0, msz
= 0, tsz
= 0;
1301 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
1302 &n
, &nsz
, &hszobj
, &mszobj
, &tszobj
))
1304 if (check_aead_encdec(ge
->e
->ops
->c
, &f
, nsz
,
1305 hszobj
, &hsz
, mszobj
, &msz
, tszobj
, &tsz
))
1307 if (GAEAD_REINIT(ge
->e
, n
, nsz
, hsz
, msz
, tsz
))
1308 VALERR("bad aead parameter combination");
1309 gaea_sever(&ge
->aad
);
1310 ge
->f
= f
; ge
->hsz
= hsz
; ge
->msz
= msz
; ge
->tsz
= tsz
;
1315 static PyObject
*gaeemeth_encrypt(PyObject
*me
, PyObject
*arg
)
1317 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1318 char *m
; Py_ssize_t msz
;
1319 char *c
= 0; size_t csz
; buf b
;
1323 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &m
, &msz
)) goto end
;
1324 if (ge
->f
&AEADF_AADFIRST
) {
1325 if ((ge
->f
&AEADF_PCHSZ
) && (ge
->aad ? ge
->aad
->hlen
: 0) != ge
->hsz
)
1326 VALERR("header doesn't match precommitted length");
1327 gaea_invalidate(ge
->aad
);
1329 if ((ge
->f
&AEADF_PCMSZ
) && msz
> ge
->msz
- ge
->mlen
)
1330 VALERR("too large for precommitted message length");
1331 csz
= msz
+ ge
->e
->ops
->c
->bufsz
; c
= xmalloc(csz
); buf_init(&b
, c
, csz
);
1332 err
= GAEAD_ENCRYPT(ge
->e
, m
, msz
, &b
); assert(!err
); (void)err
;
1333 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
); ge
->mlen
+= msz
;
1339 static PyObject
*gaeemeth_done(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1341 static const char *const kwlist
[] = { "tsz", "aad", 0 };
1342 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1343 PyObject
*aad
= Py_None
;
1344 char *c
= 0; size_t csz
; buf b
;
1345 PyObject
*tszobj
= Py_None
; PyObject
*tag
; size_t tsz
;
1349 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|OO:done", KWLIST
,
1352 if (tszobj
!= Py_None
&& !convszt(tszobj
, &tsz
)) goto end
;
1353 if (aad
!= Py_None
&&
1354 !PyObject_TypeCheck(aad
,
1355 (PyTypeObject
*)GCAEADENC_KEY(me
->ob_type
)->aad
))
1356 TYERR("wanted aad");
1357 if ((ge
->f
&AEADF_AADNDEP
) && aad
!= Py_None
&& aad
!= (PyObject
*)ge
->aad
)
1358 VALERR("mismatched aad");
1359 if ((ge
->f
&AEADF_PCHSZ
) &&
1360 (aad
== Py_None ?
0 : GAEADAAD_HLEN(aad
)) != ge
->hsz
)
1361 VALERR("header doesn't match precommitted length");
1362 if ((ge
->f
&AEADF_PCMSZ
) && ge
->mlen
!= ge
->msz
)
1363 VALERR("message doesn't match precommitted length");
1364 if (tszobj
== Py_None
) {
1365 if (ge
->f
&AEADF_PCTSZ
) tsz
= ge
->tsz
;
1366 else tsz
= keysz(0, ge
->e
->ops
->c
->tagsz
);
1368 if ((ge
->f
&AEADF_PCTSZ
) && tsz
!= ge
->tsz
)
1369 VALERR("tag length doesn't match precommitted value");
1370 if (keysz(tsz
, ge
->e
->ops
->c
->tagsz
) != tsz
) VALERR("bad tag length");
1372 csz
= ge
->e
->ops
->c
->bufsz
; c
= xmalloc(csz
); buf_init(&b
, c
, csz
);
1373 tag
= bytestring_pywrap(0, tsz
);
1374 err
= GAEAD_DONE(ge
->e
, aad
== Py_None ?
0 : GAEADAAD_A(aad
), &b
,
1375 PyString_AS_STRING(tag
), tsz
);
1376 assert(!err
); (void)err
;
1377 buf_flip(&b
); rc
= Py_BuildValue("NN", bytestring_pywrapbuf(&b
), tag
);
1383 static const PyMethodDef gaeadenc_pymethods
[] = {
1384 #define METHNAME(name) gaeemeth_##name
1385 NAMETH(aad
, "ENC.aad() -> AAD")
1386 KWMETH(reinit
, "ENC.reinit(NONCE, [hsz], [msz], [tsz])")
1387 METH (encrypt
, "ENC.encrypt(MSG) -> CT")
1388 KWMETH(done
, "ENC.done([tsz], [aad]) -> CT, TAG")
1393 static PyObject
*gaeaddec_pywrap(PyObject
*cobj
, gaead_dec
*d
, unsigned f
,
1394 size_t hsz
, size_t csz
, size_t tsz
)
1397 assert(cobj
); Py_INCREF(cobj
);
1398 gd
= PyObject_NEW(gaeaddec_pyobj
, (PyTypeObject
*)cobj
);
1399 gd
->d
= d
; gd
->f
= f
; gd
->hsz
= hsz
; gd
->csz
= csz
; gd
->tsz
= tsz
;
1400 gd
->aad
= 0; gd
->clen
= 0;
1401 return ((PyObject
*)gd
);
1404 static void gaeaddec_pydealloc(PyObject
*me
)
1406 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1408 gaea_sever(&gd
->aad
); GAEAD_DESTROY(GAEADDEC_D(me
));
1409 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
1412 static PyObject
*gaedget_hsz(PyObject
*me
, void *hunoz
)
1414 if (GAEADDEC_F(me
)&AEADF_PCHSZ
) return getulong(GAEADDEC_HSZ(me
));
1418 static PyObject
*gaedget_csz(PyObject
*me
, void *hunoz
)
1420 if (GAEADDEC_F(me
)&AEADF_PCMSZ
) return getulong(GAEADDEC_CSZ(me
));
1424 static PyObject
*gaedget_tsz(PyObject
*me
, void *hunoz
)
1426 if (GAEADDEC_F(me
)&AEADF_PCTSZ
) return getulong(GAEADDEC_TSZ(me
));
1430 static PyObject
*gaedget_clen(PyObject
*me
, void *hunoz
)
1431 { return getulong(GAEADDEC_CLEN(me
)); }
1433 static const PyGetSetDef gaeaddec_pygetset
[] = {
1434 #define GETSETNAME(op, name) gaed##op##_##name
1435 GET (hsz
, "DEC.hsz -> precommitted header length or `None'")
1436 GET (csz
, "DEC.csz -> precommitted ciphertext length or `None'")
1437 GET (tsz
, "DEC.tsz -> precommitted tag length or `None'")
1438 GET (clen
, "DEC.clen -> ciphertext length so far")
1443 static PyObject
*gaedmeth_aad(PyObject
*me
)
1445 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1447 if (!(gd
->f
&AEADF_AADNDEP
))
1448 return (gaeadaad_pywrap((PyObject
*)GCAEADDEC_KEY(gd
->ob_type
)->aad
,
1449 GAEAD_AAD(gd
->d
), 0, 0));
1452 gd
->aad
= (gaeadaad_pyobj
*)
1453 gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(gd
->ob_type
)->aad
,
1454 GAEAD_AAD(gd
->d
), gd
->f
&(AEADF_PCHSZ
| AEADF_NOAAD
),
1457 return ((PyObject
*)gd
->aad
);
1461 static PyObject
*gaedmeth_reinit(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1463 static const char *const kwlist
[] = { "nonce", "hsz", "csz", "tsz", 0 };
1464 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1465 char *n
; Py_ssize_t nsz
;
1466 PyObject
*hszobj
= Py_None
, *cszobj
= Py_None
, *tszobj
= Py_None
;
1467 size_t hsz
= 0, csz
= 0, tsz
= 0;
1470 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
1471 &n
, &nsz
, &hszobj
, &cszobj
, &tszobj
))
1473 if (check_aead_encdec(gd
->d
->ops
->c
, &f
, nsz
,
1474 hszobj
, &hsz
, cszobj
, &csz
, tszobj
, &tsz
))
1476 if (GAEAD_REINIT(gd
->d
, n
, nsz
, hsz
, csz
, tsz
))
1477 VALERR("bad aead parameter combination");
1478 gaea_sever(&gd
->aad
);
1479 gd
->f
= f
; gd
->hsz
= hsz
; gd
->csz
= csz
; gd
->tsz
= tsz
;
1484 static PyObject
*gaedmeth_decrypt(PyObject
*me
, PyObject
*arg
)
1486 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1487 char *c
; Py_ssize_t csz
;
1488 char *m
= 0; size_t msz
; buf b
;
1492 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &c
, &csz
)) goto end
;
1493 if (gd
->f
&AEADF_AADFIRST
) {
1494 if ((gd
->f
&AEADF_PCHSZ
) && (gd
->aad ? gd
->aad
->hlen
: 0) != gd
->hsz
)
1495 VALERR("header doesn't match precommitted length");
1496 gaea_invalidate(gd
->aad
);
1498 if ((gd
->f
&AEADF_PCMSZ
) && csz
> gd
->csz
- gd
->clen
)
1499 VALERR("too large for precommitted message length");
1500 msz
= csz
+ gd
->d
->ops
->c
->bufsz
; m
= xmalloc(msz
); buf_init(&b
, m
, msz
);
1501 err
= GAEAD_DECRYPT(gd
->d
, c
, csz
, &b
); assert(!err
); (void)err
;
1502 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
); gd
->clen
+= csz
;
1508 static PyObject
*gaedmeth_done(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1510 static const char *const kwlist
[] = { "tag", "aad", 0 };
1511 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1512 PyObject
*aad
= Py_None
;
1513 char *t
; Py_ssize_t tsz
;
1514 char *m
= 0; size_t msz
; buf b
;
1518 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|O:done", KWLIST
,
1521 if (aad
!= Py_None
&&
1522 !PyObject_TypeCheck(aad
,
1523 (PyTypeObject
*)GCAEADENC_KEY(me
->ob_type
)->aad
))
1524 TYERR("wanted aad");
1525 if ((gd
->f
&AEADF_AADNDEP
) && aad
!= Py_None
&& aad
!= (PyObject
*)gd
->aad
)
1526 VALERR("mismatched aad");
1527 if ((gd
->f
&AEADF_PCHSZ
) &&
1528 (aad
== Py_None ?
0 : GAEADAAD_HLEN(aad
)) != gd
->hsz
)
1529 VALERR("header doesn't match precommitted length");
1530 if ((gd
->f
&AEADF_PCMSZ
) && gd
->clen
!= gd
->csz
)
1531 VALERR("message doesn't match precommitted length");
1532 if ((gd
->f
&AEADF_PCTSZ
) && tsz
!= gd
->tsz
)
1533 VALERR("tag length doesn't match precommitted value");
1534 if (keysz(tsz
, gd
->d
->ops
->c
->tagsz
) != tsz
) VALERR("bad tag length");
1535 msz
= gd
->d
->ops
->c
->bufsz
; m
= xmalloc(msz
); buf_init(&b
, m
, msz
);
1536 err
= GAEAD_DONE(gd
->d
, aad
== Py_None ?
0 : GAEADAAD_A(aad
), &b
, t
, tsz
);
1538 if (!err
) VALERR("decryption failed");
1539 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
);
1545 static const PyMethodDef gaeaddec_pymethods
[] = {
1546 #define METHNAME(name) gaedmeth_##name
1547 NAMETH(aad
, "DEC.aad() -> AAD")
1548 KWMETH(reinit
, "DEC.reinit(NONCE, [hsz], [csz], [tsz])")
1549 METH (decrypt
, "DEC.decrypt(CT) -> MSG")
1550 KWMETH(done
, "DEC.done(TAG, [aad]) -> MSG | None")
1555 static const PyTypeObject gcaead_pytype_skel
= {
1556 PyObject_HEAD_INIT(0) 0, /* Header */
1557 "GCAEAD", /* @tp_name@ */
1558 sizeof(gcaead_pyobj
), /* @tp_basicsize@ */
1559 0, /* @tp_itemsize@ */
1561 0, /* @tp_dealloc@ */
1563 0, /* @tp_getattr@ */
1564 0, /* @tp_setattr@ */
1565 0, /* @tp_compare@ */
1567 0, /* @tp_as_number@ */
1568 0, /* @tp_as_sequence@ */
1569 0, /* @tp_as_mapping@ */
1573 0, /* @tp_getattro@ */
1574 0, /* @tp_setattro@ */
1575 0, /* @tp_as_buffer@ */
1576 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1577 Py_TPFLAGS_BASETYPE
,
1580 "Authenticated encryption (key) metaclass.",
1582 0, /* @tp_traverse@ */
1584 0, /* @tp_richcompare@ */
1585 0, /* @tp_weaklistoffset@ */
1587 0, /* @tp_iternext@ */
1588 0, /* @tp_methods@ */
1589 0, /* @tp_members@ */
1590 PYGETSET(gcaead
), /* @tp_getset@ */
1593 0, /* @tp_descr_get@ */
1594 0, /* @tp_descr_set@ */
1595 0, /* @tp_dictoffset@ */
1597 PyType_GenericAlloc
, /* @tp_alloc@ */
1598 abstract_pynew
, /* @tp_new@ */
1603 static const PyTypeObject gaeadkey_pytype_skel
= {
1604 PyObject_HEAD_INIT(0) 0, /* Header */
1605 "GAEKey", /* @tp_name@ */
1606 sizeof(gaeadkey_pyobj
), /* @tp_basicsize@ */
1607 0, /* @tp_itemsize@ */
1609 gaeadkey_pydealloc
, /* @tp_dealloc@ */
1611 0, /* @tp_getattr@ */
1612 0, /* @tp_setattr@ */
1613 0, /* @tp_compare@ */
1615 0, /* @tp_as_number@ */
1616 0, /* @tp_as_sequence@ */
1617 0, /* @tp_as_mapping@ */
1621 0, /* @tp_getattro@ */
1622 0, /* @tp_setattro@ */
1623 0, /* @tp_as_buffer@ */
1624 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1625 Py_TPFLAGS_BASETYPE
,
1628 "Authenticated encryption key.",
1630 0, /* @tp_traverse@ */
1632 0, /* @tp_richcompare@ */
1633 0, /* @tp_weaklistoffset@ */
1635 0, /* @tp_iternext@ */
1636 PYMETHODS(gaeadkey
), /* @tp_methods@ */
1637 0, /* @tp_members@ */
1638 0, /* @tp_getset@ */
1641 0, /* @tp_descr_get@ */
1642 0, /* @tp_descr_set@ */
1643 0, /* @tp_dictoffset@ */
1645 PyType_GenericAlloc
, /* @tp_alloc@ */
1646 abstract_pynew
, /* @tp_new@ */
1651 static const PyTypeObject gcaeadaad_pytype_skel
= {
1652 PyObject_HEAD_INIT(0) 0, /* Header */
1653 "GAEAADClass", /* @tp_name@ */
1654 sizeof(gcaeadaad_pyobj
), /* @tp_basicsize@ */
1655 0, /* @tp_itemsize@ */
1657 0, /* @tp_dealloc@ */
1659 0, /* @tp_getattr@ */
1660 0, /* @tp_setattr@ */
1661 0, /* @tp_compare@ */
1663 0, /* @tp_as_number@ */
1664 0, /* @tp_as_sequence@ */
1665 0, /* @tp_as_mapping@ */
1669 0, /* @tp_getattro@ */
1670 0, /* @tp_setattro@ */
1671 0, /* @tp_as_buffer@ */
1672 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1673 Py_TPFLAGS_BASETYPE
,
1676 "Authenticated encryption additional-data hash metaclass.",
1678 0, /* @tp_traverse@ */
1680 0, /* @tp_richcompare@ */
1681 0, /* @tp_weaklistoffset@ */
1683 0, /* @tp_iternext@ */
1684 0, /* @tp_methods@ */
1685 0, /* @tp_members@ */
1686 0, /* @tp_getset@ */
1689 0, /* @tp_descr_get@ */
1690 0, /* @tp_descr_set@ */
1691 0, /* @tp_dictoffset@ */
1693 PyType_GenericAlloc
, /* @tp_alloc@ */
1694 abstract_pynew
, /* @tp_new@ */
1699 static const PyTypeObject gaeadaad_pytype_skel
= {
1700 PyObject_HEAD_INIT(0) 0, /* Header */
1701 "GAEAAD", /* @tp_name@ */
1702 sizeof(gaeadaad_pyobj
), /* @tp_basicsize@ */
1703 0, /* @tp_itemsize@ */
1705 gaeadaad_pydealloc
, /* @tp_dealloc@ */
1707 0, /* @tp_getattr@ */
1708 0, /* @tp_setattr@ */
1709 0, /* @tp_compare@ */
1711 0, /* @tp_as_number@ */
1712 0, /* @tp_as_sequence@ */
1713 0, /* @tp_as_mapping@ */
1717 0, /* @tp_getattro@ */
1718 0, /* @tp_setattro@ */
1719 0, /* @tp_as_buffer@ */
1720 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1721 Py_TPFLAGS_BASETYPE
,
1724 "Authenticated encryption AAD hash.",
1726 0, /* @tp_traverse@ */
1728 0, /* @tp_richcompare@ */
1729 0, /* @tp_weaklistoffset@ */
1731 0, /* @tp_iternext@ */
1732 PYMETHODS(gaeadaad
), /* @tp_methods@ */
1733 0, /* @tp_members@ */
1734 PYGETSET(gaeadaad
), /* @tp_getset@ */
1737 0, /* @tp_descr_get@ */
1738 0, /* @tp_descr_set@ */
1739 0, /* @tp_dictoffset@ */
1741 PyType_GenericAlloc
, /* @tp_alloc@ */
1742 abstract_pynew
, /* @tp_new@ */
1747 static const PyTypeObject gcaeadenc_pytype_skel
= {
1748 PyObject_HEAD_INIT(0) 0, /* Header */
1749 "GAEEncClass", /* @tp_name@ */
1750 sizeof(gcaeadenc_pyobj
), /* @tp_basicsize@ */
1751 0, /* @tp_itemsize@ */
1753 0, /* @tp_dealloc@ */
1755 0, /* @tp_getattr@ */
1756 0, /* @tp_setattr@ */
1757 0, /* @tp_compare@ */
1759 0, /* @tp_as_number@ */
1760 0, /* @tp_as_sequence@ */
1761 0, /* @tp_as_mapping@ */
1765 0, /* @tp_getattro@ */
1766 0, /* @tp_setattro@ */
1767 0, /* @tp_as_buffer@ */
1768 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1769 Py_TPFLAGS_BASETYPE
,
1772 "Authenticated encryption operation metaclass.",
1774 0, /* @tp_traverse@ */
1776 0, /* @tp_richcompare@ */
1777 0, /* @tp_weaklistoffset@ */
1779 0, /* @tp_iternext@ */
1780 0, /* @tp_methods@ */
1781 0, /* @tp_members@ */
1782 0, /* @tp_getset@ */
1785 0, /* @tp_descr_get@ */
1786 0, /* @tp_descr_set@ */
1787 0, /* @tp_dictoffset@ */
1789 PyType_GenericAlloc
, /* @tp_alloc@ */
1790 abstract_pynew
, /* @tp_new@ */
1795 static const PyTypeObject gaeadenc_pytype_skel
= {
1796 PyObject_HEAD_INIT(0) 0, /* Header */
1797 "GAEEnc", /* @tp_name@ */
1798 sizeof(gaeadenc_pyobj
), /* @tp_basicsize@ */
1799 0, /* @tp_itemsize@ */
1801 gaeadenc_pydealloc
, /* @tp_dealloc@ */
1803 0, /* @tp_getattr@ */
1804 0, /* @tp_setattr@ */
1805 0, /* @tp_compare@ */
1807 0, /* @tp_as_number@ */
1808 0, /* @tp_as_sequence@ */
1809 0, /* @tp_as_mapping@ */
1813 0, /* @tp_getattro@ */
1814 0, /* @tp_setattro@ */
1815 0, /* @tp_as_buffer@ */
1816 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1817 Py_TPFLAGS_BASETYPE
,
1820 "Authenticated encryption operation.",
1822 0, /* @tp_traverse@ */
1824 0, /* @tp_richcompare@ */
1825 0, /* @tp_weaklistoffset@ */
1827 0, /* @tp_iternext@ */
1828 PYMETHODS(gaeadenc
), /* @tp_methods@ */
1829 0, /* @tp_members@ */
1830 PYGETSET(gaeadenc
), /* @tp_getset@ */
1833 0, /* @tp_descr_get@ */
1834 0, /* @tp_descr_set@ */
1835 0, /* @tp_dictoffset@ */
1837 PyType_GenericAlloc
, /* @tp_alloc@ */
1838 abstract_pynew
, /* @tp_new@ */
1843 static const PyTypeObject gcaeaddec_pytype_skel
= {
1844 PyObject_HEAD_INIT(0) 0, /* Header */
1845 "GAEDecClass", /* @tp_name@ */
1846 sizeof(gcaeaddec_pyobj
), /* @tp_basicsize@ */
1847 0, /* @tp_itemsize@ */
1849 0, /* @tp_dealloc@ */
1851 0, /* @tp_getattr@ */
1852 0, /* @tp_setattr@ */
1853 0, /* @tp_compare@ */
1855 0, /* @tp_as_number@ */
1856 0, /* @tp_as_sequence@ */
1857 0, /* @tp_as_mapping@ */
1861 0, /* @tp_getattro@ */
1862 0, /* @tp_setattro@ */
1863 0, /* @tp_as_buffer@ */
1864 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1865 Py_TPFLAGS_BASETYPE
,
1868 "Authenticated decryption operation metaclass.",
1870 0, /* @tp_traverse@ */
1872 0, /* @tp_richcompare@ */
1873 0, /* @tp_weaklistoffset@ */
1875 0, /* @tp_iternext@ */
1876 0, /* @tp_methods@ */
1877 0, /* @tp_members@ */
1878 0, /* @tp_getset@ */
1881 0, /* @tp_descr_get@ */
1882 0, /* @tp_descr_set@ */
1883 0, /* @tp_dictoffset@ */
1885 PyType_GenericAlloc
, /* @tp_alloc@ */
1886 abstract_pynew
, /* @tp_new@ */
1891 static const PyTypeObject gaeaddec_pytype_skel
= {
1892 PyObject_HEAD_INIT(0) 0, /* Header */
1893 "GAEDec", /* @tp_name@ */
1894 sizeof(gaeaddec_pyobj
), /* @tp_basicsize@ */
1895 0, /* @tp_itemsize@ */
1897 gaeaddec_pydealloc
, /* @tp_dealloc@ */
1899 0, /* @tp_getattr@ */
1900 0, /* @tp_setattr@ */
1901 0, /* @tp_compare@ */
1903 0, /* @tp_as_number@ */
1904 0, /* @tp_as_sequence@ */
1905 0, /* @tp_as_mapping@ */
1909 0, /* @tp_getattro@ */
1910 0, /* @tp_setattro@ */
1911 0, /* @tp_as_buffer@ */
1912 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1913 Py_TPFLAGS_BASETYPE
,
1916 "Authenticated decryption operation.",
1918 0, /* @tp_traverse@ */
1920 0, /* @tp_richcompare@ */
1921 0, /* @tp_weaklistoffset@ */
1923 0, /* @tp_iternext@ */
1924 PYMETHODS(gaeaddec
), /* @tp_methods@ */
1925 0, /* @tp_members@ */
1926 PYGETSET(gaeaddec
), /* @tp_getset@ */
1929 0, /* @tp_descr_get@ */
1930 0, /* @tp_descr_set@ */
1931 0, /* @tp_dictoffset@ */
1933 PyType_GenericAlloc
, /* @tp_alloc@ */
1934 abstract_pynew
, /* @tp_new@ */
1939 /*----- Hash functions ----------------------------------------------------*/
1941 PyTypeObject
*gchash_pytype
;
1942 static PyTypeObject
*ghash_pytype
;
1943 PyObject
*sha_pyobj
, *has160_pyobj
;
1945 typedef struct ghash_pyobj
{
1950 #define GHASH_PYCHECK(o) PyObject_TypeCheck((o), ghash_pytype)
1951 #define GHASH_H(o) (((ghash_pyobj *)(o))->h)
1953 CONVFUNC(gchash
, gchash
*, GCHASH_CH
)
1954 CONVFUNC(ghash
, ghash
*, GHASH_H
)
1956 static PyObject
*ghash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
1958 static const char *const kwlist
[] = { 0 };
1959 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", KWLIST
))
1961 return (ghash_pywrap((PyObject
*)ty
, GH_INIT(GCHASH_CH(ty
))));
1966 static PyObject
*gchash_pywrap(gchash
*ch
)
1968 gchash_pyobj
*g
= newtype(gchash_pytype
, 0, ch
->name
);
1970 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
1971 g
->ty
.ht_type
.tp_base
= ghash_pytype
;
1972 Py_INCREF(ghash_pytype
);
1973 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
1974 Py_TPFLAGS_BASETYPE
|
1975 Py_TPFLAGS_HEAPTYPE
);
1976 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
1977 g
->ty
.ht_type
.tp_free
= 0;
1978 g
->ty
.ht_type
.tp_new
= ghash_pynew
;
1979 typeready(&g
->ty
.ht_type
);
1980 return ((PyObject
*)g
);
1983 PyObject
*ghash_pywrap(PyObject
*cobj
, ghash
*h
)
1986 if (!cobj
) cobj
= gchash_pywrap((/*unconst*/ gchash
*)GH_CLASS(h
));
1987 else Py_INCREF(cobj
);
1988 g
= PyObject_NEW(ghash_pyobj
, (PyTypeObject
*)cobj
);
1990 return ((PyObject
*)g
);
1993 static void ghash_pydealloc(PyObject
*me
)
1995 GH_DESTROY(GHASH_H(me
));
1996 Py_DECREF(me
->ob_type
);
2000 static PyObject
*gchget_name(PyObject
*me
, void *hunoz
)
2001 { return (PyString_FromString(GCHASH_CH(me
)->name
)); }
2003 static PyObject
*gchget_hashsz(PyObject
*me
, void *hunoz
)
2004 { return (PyInt_FromLong(GCHASH_CH(me
)->hashsz
)); }
2006 static PyObject
*gchget_bufsz(PyObject
*me
, void *hunoz
)
2007 { return (PyInt_FromLong(GCHASH_CH(me
)->bufsz
)); }
2009 static PyObject
*ghmeth_copy(PyObject
*me
)
2010 { return (ghash_pywrap((PyObject
*)me
->ob_type
, GH_COPY(GHASH_H(me
)))); }
2012 static PyObject
*ghmeth_hash(PyObject
*me
, PyObject
*arg
)
2016 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
2017 GH_HASH(GHASH_H(me
), p
, sz
);
2021 #define GHMETH_HASHU_(n, W, w) \
2022 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
2025 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
2026 GH_HASHU##W(GHASH_H(me), x); \
2029 DOUINTCONV(GHMETH_HASHU_
)
2031 #define GHMETH_HASHBUF_(n, W, w) \
2032 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
2036 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
2037 if (sz > MASK##n) TYERR("string too long"); \
2038 GH_HASHBUF##W(GHASH_H(me), p, sz); \
2043 DOUINTCONV(GHMETH_HASHBUF_
)
2045 static PyObject
*ghmeth_hashstrz(PyObject
*me
, PyObject
*arg
)
2048 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
2049 GH_HASHSTRZ(GHASH_H(me
), p
);
2053 static PyObject
*ghmeth_done(PyObject
*me
)
2057 g
= GH_COPY(GHASH_H(me
));
2058 rc
= bytestring_pywrap(0, g
->ops
->c
->hashsz
);
2059 GH_DONE(g
, PyString_AS_STRING(rc
));
2064 static const PyGetSetDef gchash_pygetset
[] = {
2065 #define GETSETNAME(op, name) gch##op##_##name
2066 GET (bufsz
, "CH.bufsz -> hash buffer size, or zero")
2067 GET (hashsz
, "CH.hashsz -> hash output size")
2068 GET (name
, "CH.name -> name of this kind of hash")
2073 static const PyMethodDef ghash_pymethods
[] = {
2074 #define METHNAME(name) ghmeth_##name
2075 NAMETH(copy
, "H.copy() -> HH")
2076 METH (hash
, "H.hash(M)")
2077 #define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
2080 #define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
2081 DOUINTCONV(METHBUF_
)
2083 METH (hashstrz
, "H.hashstrz(STRING)")
2084 NAMETH(done
, "H.done() -> HASH")
2089 static const PyTypeObject gchash_pytype_skel
= {
2090 PyObject_HEAD_INIT(0) 0, /* Header */
2091 "GCHash", /* @tp_name@ */
2092 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
2093 0, /* @tp_itemsize@ */
2095 0, /* @tp_dealloc@ */
2097 0, /* @tp_getattr@ */
2098 0, /* @tp_setattr@ */
2099 0, /* @tp_compare@ */
2101 0, /* @tp_as_number@ */
2102 0, /* @tp_as_sequence@ */
2103 0, /* @tp_as_mapping@ */
2107 0, /* @tp_getattro@ */
2108 0, /* @tp_setattro@ */
2109 0, /* @tp_as_buffer@ */
2110 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2111 Py_TPFLAGS_BASETYPE
,
2114 "Hash function metaclass.",
2116 0, /* @tp_traverse@ */
2118 0, /* @tp_richcompare@ */
2119 0, /* @tp_weaklistoffset@ */
2121 0, /* @tp_iternext@ */
2122 0, /* @tp_methods@ */
2123 0, /* @tp_members@ */
2124 PYGETSET(gchash
), /* @tp_getset@ */
2127 0, /* @tp_descr_get@ */
2128 0, /* @tp_descr_set@ */
2129 0, /* @tp_dictoffset@ */
2131 PyType_GenericAlloc
, /* @tp_alloc@ */
2132 abstract_pynew
, /* @tp_new@ */
2137 static const PyTypeObject ghash_pytype_skel
= {
2138 PyObject_HEAD_INIT(0) 0, /* Header */
2139 "GHash", /* @tp_name@ */
2140 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
2141 0, /* @tp_itemsize@ */
2143 ghash_pydealloc
, /* @tp_dealloc@ */
2145 0, /* @tp_getattr@ */
2146 0, /* @tp_setattr@ */
2147 0, /* @tp_compare@ */
2149 0, /* @tp_as_number@ */
2150 0, /* @tp_as_sequence@ */
2151 0, /* @tp_as_mapping@ */
2155 0, /* @tp_getattro@ */
2156 0, /* @tp_setattro@ */
2157 0, /* @tp_as_buffer@ */
2158 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2159 Py_TPFLAGS_BASETYPE
,
2162 "Hash function, abstract base class.",
2164 0, /* @tp_traverse@ */
2166 0, /* @tp_richcompare@ */
2167 0, /* @tp_weaklistoffset@ */
2169 0, /* @tp_iternext@ */
2170 PYMETHODS(ghash
), /* @tp_methods@ */
2171 0, /* @tp_members@ */
2172 0, /* @tp_getset@ */
2175 0, /* @tp_descr_get@ */
2176 0, /* @tp_descr_set@ */
2177 0, /* @tp_dictoffset@ */
2179 PyType_GenericAlloc
, /* @tp_alloc@ */
2180 abstract_pynew
, /* @tp_new@ */
2185 /*----- Message authentication --------------------------------------------*/
2187 static PyTypeObject
*gcmac_pytype
, *gmac_pytype
, *gmhash_pytype
;
2189 typedef struct gcmac_pyobj
{
2190 PyHeapTypeObject ty
;
2194 #define GCMAC_PYCHECK(o) PyObject_TypeCheck((o), gcmac_pytype)
2195 #define GCMAC_CM(o) (((gcmac_pyobj *)(o))->cm)
2196 #define GCMAC_F(o) (((gcmac_pyobj *)(o))->f)
2197 CONVFUNC(gcmac
, gcmac
*, GCMAC_CM
)
2198 static PyObject
*gmac_pywrap(PyObject
*, gmac
*);
2200 typedef struct gmac_pyobj
{
2201 PyHeapTypeObject ty
;
2205 extern PyTypeObject
*gmac_pytype
;
2206 #define GMAC_PYCHECK(o) PyObject_TypeCheck((o), gmac_pytype)
2207 #define GMAC_M(o) (((gmac_pyobj *)(o))->m)
2208 #define GMAC_F(o) (((gmac_pyobj *)(o))->f)
2209 extern PyObject
*gmac_pywrap(PyObject
*, gmac
*);
2210 extern int convgmac(PyObject
*, void *);
2212 static PyObject
*gmac_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2214 static const char *const kwlist
[] = { "k", 0 };
2218 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
2220 if (keysz(sz
, GCMAC_CM(ty
)->keysz
) != sz
) VALERR("bad key length");
2221 return (gmac_pywrap((PyObject
*)ty
,
2222 GM_KEY(GCMAC_CM(ty
), k
, sz
)));
2227 static PyObject
*gmhash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2229 static const char *const kwlist
[] = { 0 };
2232 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", KWLIST
)) return (0);
2233 g
= PyObject_NEW(ghash_pyobj
, ty
);
2234 g
->h
= GM_INIT(GMAC_M(ty
));
2236 return ((PyObject
*)g
);
2239 static PyObject
*gcmac_pywrap(gcmac
*cm
)
2241 gcmac_pyobj
*g
= newtype(gcmac_pytype
, 0, cm
->name
);
2243 g
->ty
.ht_type
.tp_basicsize
= sizeof(gmac_pyobj
);
2244 g
->ty
.ht_type
.tp_base
= gmac_pytype
;
2245 Py_INCREF(gmac_pytype
);
2246 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2247 Py_TPFLAGS_BASETYPE
|
2248 Py_TPFLAGS_HEAPTYPE
);
2249 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2250 g
->ty
.ht_type
.tp_free
= 0;
2251 g
->ty
.ht_type
.tp_new
= gmac_pynew
;
2252 typeready(&g
->ty
.ht_type
);
2253 return ((PyObject
*)g
);
2256 static PyObject
*gmac_pywrap(PyObject
*cobj
, gmac
*m
)
2259 if (!cobj
) cobj
= gcmac_pywrap((/*unconst*/ gcmac
*)GM_CLASS(m
));
2260 else Py_INCREF(cobj
);
2261 g
= newtype((PyTypeObject
*)cobj
, 0, 0);
2262 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
2263 g
->ty
.ht_name
= PyString_FromFormat("%s(keyed)", m
->ops
->c
->name
);
2264 g
->ty
.ht_type
.tp_name
= PyString_AS_STRING(g
->ty
.ht_name
);
2265 g
->ty
.ht_type
.tp_base
= gmhash_pytype
;
2266 Py_INCREF(gmac_pytype
);
2267 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2268 Py_TPFLAGS_BASETYPE
|
2269 Py_TPFLAGS_HEAPTYPE
);
2270 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2271 g
->ty
.ht_type
.tp_free
= 0;
2272 g
->ty
.ht_type
.tp_new
= gmhash_pynew
;
2273 typeready(&g
->ty
.ht_type
);
2275 return ((PyObject
*)g
);
2278 static void gmac_pydealloc(PyObject
*me
)
2280 GM_DESTROY(GMAC_M(me
));
2281 Py_DECREF(me
->ob_type
);
2282 PyType_Type
.tp_dealloc(me
);
2285 static PyObject
*gcmget_name(PyObject
*me
, void *hunoz
)
2286 { return (PyString_FromString(GCMAC_CM(me
)->name
)); }
2288 static PyObject
*gcmget_keysz(PyObject
*me
, void *hunoz
)
2289 { return (keysz_pywrap(GCMAC_CM(me
)->keysz
)); }
2291 static PyObject
*gcmget_tagsz(PyObject
*me
, void *hunoz
)
2292 { return (PyInt_FromLong(GCMAC_CM(me
)->hashsz
)); }
2294 static const PyGetSetDef gcmac_pygetset
[] = {
2295 #define GETSETNAME(op, name) gcm##op##_##name
2296 GET (keysz
, "CM.keysz -> acceptable key sizes")
2297 GET (tagsz
, "CM.tagsz -> MAC output size")
2298 GET (name
, "CM.name -> name of this kind of MAC")
2303 static const PyTypeObject gcmac_pytype_skel
= {
2304 PyObject_HEAD_INIT(0) 0, /* Header */
2305 "GCMAC", /* @tp_name@ */
2306 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
2307 0, /* @tp_itemsize@ */
2309 0, /* @tp_dealloc@ */
2311 0, /* @tp_getattr@ */
2312 0, /* @tp_setattr@ */
2313 0, /* @tp_compare@ */
2315 0, /* @tp_as_number@ */
2316 0, /* @tp_as_sequence@ */
2317 0, /* @tp_as_mapping@ */
2321 0, /* @tp_getattro@ */
2322 0, /* @tp_setattro@ */
2323 0, /* @tp_as_buffer@ */
2324 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2325 Py_TPFLAGS_BASETYPE
,
2328 "Message authentication code metametaclass.",
2330 0, /* @tp_traverse@ */
2332 0, /* @tp_richcompare@ */
2333 0, /* @tp_weaklistoffset@ */
2335 0, /* @tp_iternext@ */
2336 0, /* @tp_methods@ */
2337 0, /* @tp_members@ */
2338 PYGETSET(gcmac
), /* @tp_getset@ */
2341 0, /* @tp_descr_get@ */
2342 0, /* @tp_descr_set@ */
2343 0, /* @tp_dictoffset@ */
2345 PyType_GenericAlloc
, /* @tp_alloc@ */
2346 abstract_pynew
, /* @tp_new@ */
2351 static const PyTypeObject gmac_pytype_skel
= {
2352 PyObject_HEAD_INIT(0) 0, /* Header */
2353 "GMAC", /* @tp_name@ */
2354 sizeof(gmac_pyobj
), /* @tp_basicsize@ */
2355 0, /* @tp_itemsize@ */
2357 gmac_pydealloc
, /* @tp_dealloc@ */
2359 0, /* @tp_getattr@ */
2360 0, /* @tp_setattr@ */
2361 0, /* @tp_compare@ */
2363 0, /* @tp_as_number@ */
2364 0, /* @tp_as_sequence@ */
2365 0, /* @tp_as_mapping@ */
2369 0, /* @tp_getattro@ */
2370 0, /* @tp_setattro@ */
2371 0, /* @tp_as_buffer@ */
2372 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2373 Py_TPFLAGS_BASETYPE
,
2376 "Message authentication code metaclass, abstract base class.",
2378 0, /* @tp_traverse@ */
2380 0, /* @tp_richcompare@ */
2381 0, /* @tp_weaklistoffset@ */
2383 0, /* @tp_iternext@ */
2384 0, /* @tp_methods@ */
2385 0, /* @tp_members@ */
2386 0, /* @tp_getset@ */
2389 0, /* @tp_descr_get@ */
2390 0, /* @tp_descr_set@ */
2391 0, /* @tp_dictoffset@ */
2393 PyType_GenericAlloc
, /* @tp_alloc@ */
2394 abstract_pynew
, /* @tp_new@ */
2399 static const PyTypeObject gmhash_pytype_skel
= {
2400 PyObject_HEAD_INIT(0) 0, /* Header */
2401 "GMACHash", /* @tp_name@ */
2402 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
2403 0, /* @tp_itemsize@ */
2405 ghash_pydealloc
, /* @tp_dealloc@ */
2407 0, /* @tp_getattr@ */
2408 0, /* @tp_setattr@ */
2409 0, /* @tp_compare@ */
2411 0, /* @tp_as_number@ */
2412 0, /* @tp_as_sequence@ */
2413 0, /* @tp_as_mapping@ */
2417 0, /* @tp_getattro@ */
2418 0, /* @tp_setattro@ */
2419 0, /* @tp_as_buffer@ */
2420 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2421 Py_TPFLAGS_BASETYPE
,
2424 "Message authentication code, abstract base class.",
2426 0, /* @tp_traverse@ */
2428 0, /* @tp_richcompare@ */
2429 0, /* @tp_weaklistoffset@ */
2431 0, /* @tp_iternext@ */
2432 0, /* @tp_methods@ */
2433 0, /* @tp_members@ */
2434 0, /* @tp_getset@ */
2437 0, /* @tp_descr_get@ */
2438 0, /* @tp_descr_set@ */
2439 0, /* @tp_dictoffset@ */
2441 PyType_GenericAlloc
, /* @tp_alloc@ */
2442 abstract_pynew
, /* @tp_new@ */
2447 /*----- Special snowflake for Poly1305 ------------------------------------*/
2449 PyTypeObject
*poly1305cls_pytype
, *poly1305key_pytype
, *poly1305hash_pytype
;
2451 typedef struct poly1305key_pyobj
{
2452 PyHeapTypeObject ty
;
2454 } poly1305key_pyobj
;
2456 typedef struct poly1305hash_pyobj
{
2461 } poly1305hash_pyobj
;
2463 #define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
2464 #define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
2465 CONVFUNC(poly1305hash
, poly1305_ctx
*, P1305_CTX
)
2467 static PyObject
*poly1305hash_pynew(PyTypeObject
*ty
,
2468 PyObject
*arg
, PyObject
*kw
)
2470 static const char *const kwlist
[] = { "mask", 0 };
2471 poly1305key_pyobj
*pk
= (poly1305key_pyobj
*)ty
;
2472 poly1305hash_pyobj
*ph
;
2476 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|s#:new", KWLIST
, &m
, &sz
))
2478 if (m
&& sz
!= POLY1305_MASKSZ
) VALERR("bad mask length");
2479 ph
= PyObject_NEW(poly1305hash_pyobj
, ty
);
2481 if (m
) ph
->f
|= f_mask
;
2482 poly1305_macinit(&ph
->ctx
, &pk
->k
, m
);
2484 return ((PyObject
*)ph
);
2489 static PyObject
*poly1305key_pynew(PyTypeObject
*ty
,
2490 PyObject
*arg
, PyObject
*kw
)
2492 static const char *const kwlist
[] = { "k", 0 };
2493 poly1305key_pyobj
*pk
;
2497 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
2499 if (keysz(sz
, poly1305_keysz
) != sz
) VALERR("bad key length");
2501 pk
= newtype(ty
, 0, 0);
2502 pk
->ty
.ht_name
= PyString_FromString("poly1305(keyed)");
2503 pk
->ty
.ht_type
.tp_basicsize
= sizeof(poly1305hash_pyobj
);
2504 pk
->ty
.ht_type
.tp_name
= PyString_AS_STRING(pk
->ty
.ht_name
);
2505 pk
->ty
.ht_type
.tp_base
= poly1305hash_pytype
;
2506 Py_INCREF(poly1305key_pytype
);
2507 pk
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2508 Py_TPFLAGS_BASETYPE
|
2509 Py_TPFLAGS_HEAPTYPE
);
2510 pk
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2511 pk
->ty
.ht_type
.tp_free
= 0;
2512 pk
->ty
.ht_type
.tp_new
= poly1305hash_pynew
;
2513 typeready(&pk
->ty
.ht_type
);
2515 poly1305_keyinit(&pk
->k
, k
, sz
);
2516 return ((PyObject
*)pk
);
2522 static PyObject
*poly1305clsget_name(PyObject
*me
, void *hunoz
)
2523 { return (PyString_FromString("poly1305")); }
2525 static PyObject
*poly1305clsget_keysz(PyObject
*me
, void *hunoz
)
2526 { return (keysz_pywrap(poly1305_keysz
)); }
2528 static PyObject
*poly1305clsget_masksz(PyObject
*me
, void *hunoz
)
2529 { return (PyInt_FromLong(POLY1305_MASKSZ
)); }
2531 static PyObject
*poly1305clsget_tagsz(PyObject
*me
, void *hunoz
)
2532 { return (PyInt_FromLong(POLY1305_TAGSZ
)); }
2534 static PyObject
*polymeth_copy(PyObject
*me
)
2536 poly1305hash_pyobj
*ph
;
2537 ph
= PyObject_NEW(poly1305hash_pyobj
, me
->ob_type
);
2538 poly1305_copy(&ph
->ctx
, P1305_CTX(me
));
2539 Py_INCREF(me
->ob_type
);
2540 return ((PyObject
*)ph
);
2543 static PyObject
*polymeth_hash(PyObject
*me
, PyObject
*arg
)
2547 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
2548 poly1305_hash(P1305_CTX(me
), p
, sz
);
2552 #define POLYMETH_HASHU_(n, W, w) \
2553 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
2557 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
2558 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2561 DOUINTCONV(POLYMETH_HASHU_
)
2563 #define POLYMETH_HASHBUF_(n, W, w) \
2564 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
2569 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
2570 if (sz > MASK##n) TYERR("string too long"); \
2571 STORE##W(b, sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2572 poly1305_hash(P1305_CTX(me), p, sz); \
2577 DOUINTCONV(POLYMETH_HASHBUF_
)
2579 static PyObject
*polymeth_hashstrz(PyObject
*me
, PyObject
*arg
)
2582 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
2583 poly1305_hash(P1305_CTX(me
), p
, strlen(p
) + 1);
2587 static PyObject
*polymeth_flush(PyObject
*me
)
2588 { poly1305_flush(P1305_CTX(me
)); RETURN_ME
; }
2590 static PyObject
*polymeth_flushzero(PyObject
*me
)
2591 { poly1305_flushzero(P1305_CTX(me
)); RETURN_ME
; }
2593 static PyObject
*polymeth_concat(PyObject
*me
, PyObject
*arg
)
2595 PyObject
*pre
, *suff
;
2596 if (!PyArg_ParseTuple(arg
, "OO:concat", &pre
, &suff
)) return (0);
2597 if (!PyObject_TypeCheck(pre
, poly1305hash_pytype
) ||
2598 !PyObject_TypeCheck(suff
, poly1305hash_pytype
))
2599 TYERR("wanted a poly1305hash");
2600 if (me
->ob_type
!= pre
->ob_type
|| me
->ob_type
!= suff
->ob_type
)
2601 TYERR("key mismatch");
2602 if (P1305_CTX(pre
)->nbuf
) VALERR("prefix is not block-aligned");
2603 poly1305_concat(P1305_CTX(me
), P1305_CTX(pre
), P1305_CTX(suff
));
2609 static PyObject
*polymeth_done(PyObject
*me
)
2612 if (!(P1305_F(me
) & f_mask
)) VALERR("no mask");
2613 rc
= bytestring_pywrap(0, POLY1305_TAGSZ
);
2614 poly1305_done(P1305_CTX(me
), PyString_AS_STRING(rc
));
2620 static const PyGetSetDef poly1305cls_pygetset
[] = {
2621 #define GETSETNAME(op, name) poly1305cls##op##_##name
2622 GET (keysz
, "PC.keysz -> acceptable key sizes")
2623 GET (masksz
, "PC.masksz -> mask size")
2624 GET (tagsz
, "PC.tagsz -> MAC output size")
2625 GET (name
, "PC.name -> name of this kind of MAC")
2630 static const PyMethodDef poly1305hash_pymethods
[] = {
2631 #define METHNAME(name) polymeth_##name
2632 NAMETH(copy
, "P.copy() -> PP")
2633 METH (hash
, "P.hash(M)")
2634 #define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
2637 #define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
2638 DOUINTCONV(METHBUF_
)
2640 METH (hashstrz
, "P.hashstrz(STRING)")
2641 NAMETH(flush
, "P.flush()")
2642 NAMETH(flushzero
, "P.flushzero()")
2643 METH (concat
, "P.concat(PREFIX, SUFFIX)")
2644 NAMETH(done
, "P.done() -> TAG")
2649 static const PyTypeObject poly1305cls_pytype_skel
= {
2650 PyObject_HEAD_INIT(0) 0, /* Header */
2651 "Poly1305Class", /* @tp_name@ */
2652 sizeof(PyHeapTypeObject
), /* @tp_basicsize@ */
2653 0, /* @tp_itemsize@ */
2655 0, /* @tp_dealloc@ */
2657 0, /* @tp_getattr@ */
2658 0, /* @tp_setattr@ */
2659 0, /* @tp_compare@ */
2661 0, /* @tp_as_number@ */
2662 0, /* @tp_as_sequence@ */
2663 0, /* @tp_as_mapping@ */
2667 0, /* @tp_getattro@ */
2668 0, /* @tp_setattro@ */
2669 0, /* @tp_as_buffer@ */
2670 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2671 Py_TPFLAGS_BASETYPE
,
2674 "Poly1305 metametaclass. Best not to ask.",
2676 0, /* @tp_traverse@ */
2678 0, /* @tp_richcompare@ */
2679 0, /* @tp_weaklistoffset@ */
2681 0, /* @tp_iternext@ */
2682 0, /* @tp_methods@ */
2683 0, /* @tp_members@ */
2684 PYGETSET(poly1305cls
), /* @tp_getset@ */
2687 0, /* @tp_descr_get@ */
2688 0, /* @tp_descr_set@ */
2689 0, /* @tp_dictoffset@ */
2691 PyType_GenericAlloc
, /* @tp_alloc@ */
2692 abstract_pynew
, /* @tp_new@ */
2697 static const PyTypeObject poly1305key_pytype_skel
= {
2698 PyObject_HEAD_INIT(0) 0, /* Header */
2699 "poly1305", /* @tp_name@ */
2700 sizeof(poly1305key_pyobj
), /* @tp_basicsize@ */
2701 0, /* @tp_itemsize@ */
2703 0, /* @tp_dealloc@ */
2705 0, /* @tp_getattr@ */
2706 0, /* @tp_setattr@ */
2707 0, /* @tp_compare@ */
2709 0, /* @tp_as_number@ */
2710 0, /* @tp_as_sequence@ */
2711 0, /* @tp_as_mapping@ */
2715 0, /* @tp_getattro@ */
2716 0, /* @tp_setattro@ */
2717 0, /* @tp_as_buffer@ */
2718 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2719 Py_TPFLAGS_BASETYPE
,
2722 "poly1305(K): Poly1305 key.",
2724 0, /* @tp_traverse@ */
2726 0, /* @tp_richcompare@ */
2727 0, /* @tp_weaklistoffset@ */
2729 0, /* @tp_iternext@ */
2730 0, /* @tp_methods@ */
2731 0, /* @tp_members@ */
2732 0, /* @tp_getset@ */
2735 0, /* @tp_descr_get@ */
2736 0, /* @tp_descr_set@ */
2737 0, /* @tp_dictoffset@ */
2739 PyType_GenericAlloc
, /* @tp_alloc@ */
2740 poly1305key_pynew
, /* @tp_new@ */
2745 static const PyTypeObject poly1305hash_pytype_skel
= {
2746 PyObject_HEAD_INIT(0) 0, /* Header */
2747 "Poly1305Hash", /* @tp_name@ */
2748 sizeof(poly1305hash_pyobj
), /* @tp_basicsize@ */
2749 0, /* @tp_itemsize@ */
2751 0, /* @tp_dealloc@ */
2753 0, /* @tp_getattr@ */
2754 0, /* @tp_setattr@ */
2755 0, /* @tp_compare@ */
2757 0, /* @tp_as_number@ */
2758 0, /* @tp_as_sequence@ */
2759 0, /* @tp_as_mapping@ */
2763 0, /* @tp_getattro@ */
2764 0, /* @tp_setattro@ */
2765 0, /* @tp_as_buffer@ */
2766 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2767 Py_TPFLAGS_BASETYPE
,
2770 "Poly1305 MAC context base class.",
2772 0, /* @tp_traverse@ */
2774 0, /* @tp_richcompare@ */
2775 0, /* @tp_weaklistoffset@ */
2777 0, /* @tp_iternext@ */
2778 PYMETHODS(poly1305hash
), /* @tp_methods@ */
2779 0, /* @tp_members@ */
2780 0, /* @tp_getset@ */
2783 0, /* @tp_descr_get@ */
2784 0, /* @tp_descr_set@ */
2785 0, /* @tp_dictoffset@ */
2787 PyType_GenericAlloc
, /* @tp_alloc@ */
2788 abstract_pynew
, /* @tp_new@ */
2793 /*----- Special snowflake for HSalsa and HChaCha --------------------------*/
2795 #define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
2796 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
2798 dance##_ctx dance; \
2800 Py_ssize_t ksz, nsz; \
2802 if (!PyArg_ParseTuple(arg, "s#s#:" #hdance "_prf", \
2803 &k, &ksz, &n, &nsz)) \
2805 if (ksz != keysz(ksz, dance##_keysz)) VALERR("bad key length"); \
2806 if (nsz != HDANCE##_INSZ) VALERR("bad input length"); \
2807 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
2808 dance##_init(&dance, k, ksz, 0); \
2809 hdance##_prf(&dance, n, PyString_AS_STRING(rc)); \
2815 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa20
)
2816 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa2012
)
2817 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa208
)
2819 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha20
)
2820 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha12
)
2821 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha8
)
2823 /*----- Keccak-p[1600, n] -------------------------------------------------*/
2825 static PyTypeObject
*kxvik_pytype
;
2827 typedef struct kxvik_pyobj
{
2833 static PyObject
*kxvik_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2836 kxvik_pyobj
*rc
= 0;
2837 static const char *const kwlist
[] = { "nround", 0 };
2838 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:new", KWLIST
,
2841 rc
= (kxvik_pyobj
*)ty
->tp_alloc(ty
, 0);
2843 keccak1600_init(&rc
->s
);
2845 return ((PyObject
*)rc
);
2848 static PyObject
*kxvikmeth_copy(PyObject
*me
)
2850 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
, *rc
= 0;
2851 rc
= (kxvik_pyobj
*)k
->ob_type
->tp_alloc(k
->ob_type
, 0);
2852 rc
->s
= k
->s
; rc
->n
= k
->n
;
2853 return ((PyObject
*)rc
);
2856 static PyObject
*kxvikmeth_mix(PyObject
*me
, PyObject
*arg
)
2858 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2863 char *p
; Py_ssize_t n
;
2865 if (!PyArg_ParseTuple(arg
, "s#:mix", &p
, &n
)) goto end
;
2866 if (n
> 200) VALERR("out of range");
2867 q
= (const octet
*)p
;
2869 while (n
> 8) { LOAD64_L_(t
[i
], q
); i
++; q
+= 8; n
-= 8; }
2871 memcpy(buf
, q
, n
); memset(buf
+ n
, 0, 8 - n
);
2872 LOAD64_L_(t
[i
], buf
); i
++;
2874 keccak1600_mix(&k
->s
, t
, i
);
2880 static PyObject
*kxvikmeth_extract(PyObject
*me
, PyObject
*arg
)
2882 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2889 if (!PyArg_ParseTuple(arg
, "O&:extract", convuint
, &n
)) goto end
;
2890 if (n
> 200) VALERR("out of range");
2891 rc
= bytestring_pywrap(0, n
);
2892 q
= (octet
*)PyString_AS_STRING(rc
);
2893 keccak1600_extract(&k
->s
, t
, (n
+ 7)/8);
2895 while (n
> 8) { STORE64_L_(q
, t
[i
]); i
++; q
+= 8; n
-= 8; }
2896 if (n
) { STORE64_L_(buf
, t
[i
]); memcpy(q
, buf
, n
); }
2901 static PyObject
*kxvikmeth_step(PyObject
*me
)
2903 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2904 keccak1600_p(&k
->s
, &k
->s
, k
->n
);
2908 static const PyMemberDef kxvik_pymembers
[] = {
2909 #define MEMBERSTRUCT kxvik_pyobj
2910 MEMRNM(nround
, T_UINT
, n
, 0, "KECCAC.nround -> number of rounds")
2915 static const PyMethodDef kxvik_pymethods
[] = {
2916 #define METHNAME(func) kxvikmeth_##func
2917 NAMETH(copy
, "KECCAK.copy() -> KECCAK'")
2918 METH (mix
, "KECCAK.mix(DATA)")
2919 METH (extract
, "KECCAK.extract(NOCTETS)")
2920 NAMETH(step
, "KECCAK.step()")
2925 static const PyTypeObject kxvik_pytype_skel
= {
2926 PyObject_HEAD_INIT(0) 0, /* Header */
2927 "Keccak1600", /* @tp_name@ */
2928 sizeof(kxvik_pyobj
), /* @tp_basicsize@ */
2929 0, /* @tp_itemsize@ */
2931 0, /* @tp_dealloc@ */
2933 0, /* @tp_getattr@ */
2934 0, /* @tp_setattr@ */
2935 0, /* @tp_compare@ */
2937 0, /* @tp_as_number@ */
2938 0, /* @tp_as_sequence@ */
2939 0, /* @tp_as_mapping@ */
2943 0, /* @tp_getattro@ */
2944 0, /* @tp_setattro@ */
2945 0, /* @tp_as_buffer@ */
2946 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2947 Py_TPFLAGS_BASETYPE
,
2950 "Keccak1600([nround = 24]): Keccak-p[1600, n] state.",
2952 0, /* @tp_traverse@ */
2954 0, /* @tp_richcompare@ */
2955 0, /* @tp_weaklistoffset@ */
2957 0, /* @tp_iternext@ */
2958 PYMETHODS(kxvik
), /* @tp_methods@ */
2959 PYMEMBERS(kxvik
), /* @tp_members@ */
2960 0, /* @tp_getset@ */
2963 0, /* @tp_descr_get@ */
2964 0, /* @tp_descr_set@ */
2965 0, /* @tp_dictoffset@ */
2967 PyType_GenericAlloc
, /* @tp_alloc@ */
2968 kxvik_pynew
, /* @tp_new@ */
2973 static PyTypeObject
*shake_pytype
, *shake128_pytype
, *shake256_pytype
;
2975 typedef struct shake_pyobj
{
2981 #define SHAKE_H(o) (&((shake_pyobj *)(o))->h)
2982 #define SHAKE_ST(o) (((shake_pyobj *)(o))->st)
2984 static PyObject
*shake_dopynew(void (*initfn
)(shake_ctx
*,
2985 const void *, size_t,
2986 const void *, size_t),
2988 PyObject
*arg
, PyObject
*kw
)
2990 shake_pyobj
*rc
= 0;
2991 char *p
= 0, *f
= 0;
2992 Py_ssize_t psz
= 0, fsz
= 0;
2993 static const char *const kwlist
[] = { "perso", "func", 0 };
2995 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|s#s#:new", KWLIST
,
2996 &p
, &psz
, &f
, &fsz
))
2998 rc
= (shake_pyobj
*)ty
->tp_alloc(ty
, 0);
2999 initfn(&rc
->h
, f
, fsz
, p
, psz
);
3002 return ((PyObject
*)rc
);
3005 static PyObject
*shake128_pynew(PyTypeObject
*ty
,
3006 PyObject
*arg
, PyObject
*kw
)
3007 { return (shake_dopynew(cshake128_init
, ty
, arg
, kw
)); }
3009 static PyObject
*shake256_pynew(PyTypeObject
*ty
,
3010 PyObject
*arg
, PyObject
*kw
)
3011 { return (shake_dopynew(cshake256_init
, ty
, arg
, kw
)); }
3013 static int shake_check(PyObject
*me
, int st
)
3015 if (SHAKE_ST(me
) != st
) VALERR("wrong state");
3021 static PyObject
*shakemeth_hash(PyObject
*me
, PyObject
*arg
)
3025 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
3026 if (shake_check(me
, 0)) return (0);
3027 shake_hash(SHAKE_H(me
), p
, sz
);
3031 #define SHAKEMETH_HASHU_(n, W, w) \
3032 static PyObject *shakemeth_hashu##w(PyObject *me, PyObject *arg) \
3036 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
3037 if (shake_check(me, 0)) return (0); \
3038 STORE##W(b, x); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3041 DOUINTCONV(SHAKEMETH_HASHU_
)
3043 #define SHAKEMETH_HASHBUF_(n, W, w) \
3044 static PyObject *shakemeth_hashbuf##w(PyObject *me, PyObject *arg) \
3049 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
3050 if (sz > MASK##n) TYERR("string too long"); \
3051 if (shake_check(me, 0)) goto end; \
3052 STORE##W(b, sz); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3053 shake_hash(SHAKE_H(me), p, sz); \
3058 DOUINTCONV(SHAKEMETH_HASHBUF_
)
3060 static PyObject
*shakemeth_hashstrz(PyObject
*me
, PyObject
*arg
)
3063 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
3064 if (shake_check(me
, 0)) return (0);
3065 shake_hash(SHAKE_H(me
), p
, strlen(p
) + 1);
3069 static PyObject
*shakemeth_xof(PyObject
*me
)
3071 if (shake_check(me
, 0)) goto end
;
3072 shake_xof(SHAKE_H(me
));
3079 static PyObject
*shakemeth_done(PyObject
*me
, PyObject
*arg
)
3083 if (!PyArg_ParseTuple(arg
, "O&:done", convszt
, &n
)) goto end
;
3084 if (shake_check(me
, 0)) goto end
;
3085 rc
= bytestring_pywrap(0, n
);
3086 shake_done(SHAKE_H(me
), PyString_AS_STRING(rc
), n
);
3092 static PyObject
*shakemeth_copy(PyObject
*me
)
3094 shake_pyobj
*rc
= 0;
3096 rc
= PyObject_NEW(shake_pyobj
, me
->ob_type
);
3097 rc
->h
= *SHAKE_H(me
);
3098 rc
->st
= SHAKE_ST(me
);
3099 return ((PyObject
*)rc
);
3102 static PyObject
*shakemeth_get(PyObject
*me
, PyObject
*arg
)
3107 if (!PyArg_ParseTuple(arg
, "O&:get", convszt
, &sz
)) goto end
;
3108 if (shake_check(me
, 1)) goto end
;
3109 rc
= bytestring_pywrap(0, sz
);
3110 shake_get(SHAKE_H(me
), PyString_AS_STRING(rc
), sz
);
3115 static PyObject
*shakemeth_mask(PyObject
*me
, PyObject
*arg
)
3118 char *p
; Py_ssize_t sz
;
3120 if (!PyArg_ParseTuple(arg
, "s#:mask", &p
, &sz
)) goto end
;
3121 if (shake_check(me
, 1)) goto end
;
3122 rc
= bytestring_pywrap(0, sz
);
3123 shake_mask(SHAKE_H(me
), p
, PyString_AS_STRING(rc
), sz
);
3128 static PyObject
*shakeget_state(PyObject
*me
, void *hunoz
)
3130 int st
= SHAKE_ST(me
);
3131 return (PyString_FromString(st
== 0 ?
"absorb" :
3132 st
== 1 ?
"squeeze" : "dead"));
3135 static const PyMemberDef shake_pymembers
[] = {
3136 #define MEMBERSTRUCT shake_pyobj
3137 MEMRNM(rate
, T_UINT
, h
.h
.r
, READONLY
, "S.rate -> rate, in bytes")
3138 MEMRNM(buffered
, T_UINT
, h
.h
.n
, READONLY
,
3139 "S.buffered -> amount currently buffered")
3144 static const PyGetSetDef shake_pygetset
[] = {
3145 #define GETSETNAME(op, name) shake##op##_##name
3146 GET (state
, "S.state -> `absorb', `squeeze', `dead'")
3151 static const PyMethodDef shake_pymethods
[] = {
3152 #define METHNAME(func) shakemeth_##func
3153 NAMETH(copy
, "S.copy() -> SS")
3154 METH (hash
, "S.hash(M)")
3155 #define METHU_(n, W, w) METH(hashu##w, "S.hashu" #w "(WORD)")
3158 #define METHBUF_(n, W, w) METH(hashbuf##w, "S.hashbuf" #w "(BYTES)")
3159 DOUINTCONV(METHBUF_
)
3161 METH (hashstrz
, "S.hashstrz(STRING)")
3162 NAMETH(xof
, "S.xof()")
3163 METH (done
, "S.done(LEN) -> H")
3164 METH (get
, "S.get(LEN) -> H")
3165 METH (mask
, "S.mask(M) -> C")
3170 static const PyTypeObject shake_pytype_skel
= {
3171 PyObject_HEAD_INIT(0) 0, /* Header */
3172 "Shake", /* @tp_name@ */
3173 sizeof(shake_pyobj
), /* @tp_basicsize@ */
3174 0, /* @tp_itemsize@ */
3176 0, /* @tp_dealloc@ */
3178 0, /* @tp_getattr@ */
3179 0, /* @tp_setattr@ */
3180 0, /* @tp_compare@ */
3182 0, /* @tp_as_number@ */
3183 0, /* @tp_as_sequence@ */
3184 0, /* @tp_as_mapping@ */
3188 0, /* @tp_getattro@ */
3189 0, /* @tp_setattro@ */
3190 0, /* @tp_as_buffer@ */
3191 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3192 Py_TPFLAGS_BASETYPE
,
3195 "SHAKE/cSHAKE/KMAC base class.",
3197 0, /* @tp_traverse@ */
3199 0, /* @tp_richcompare@ */
3200 0, /* @tp_weaklistoffset@ */
3202 0, /* @tp_iternext@ */
3203 PYMETHODS(shake
), /* @tp_methods@ */
3204 PYMEMBERS(shake
), /* @tp_members@ */
3205 PYGETSET(shake
), /* @tp_getset@ */
3208 0, /* @tp_descr_get@ */
3209 0, /* @tp_descr_set@ */
3210 0, /* @tp_dictoffset@ */
3212 PyType_GenericAlloc
, /* @tp_alloc@ */
3213 abstract_pynew
, /* @tp_new@ */
3218 static const PyTypeObject shake128_pytype_skel
= {
3219 PyObject_HEAD_INIT(0) 0, /* Header */
3220 "Shake128", /* @tp_name@ */
3221 0, /* @tp_basicsize@ */
3222 0, /* @tp_itemsize@ */
3224 0, /* @tp_dealloc@ */
3226 0, /* @tp_getattr@ */
3227 0, /* @tp_setattr@ */
3228 0, /* @tp_compare@ */
3230 0, /* @tp_as_number@ */
3231 0, /* @tp_as_sequence@ */
3232 0, /* @tp_as_mapping@ */
3236 0, /* @tp_getattro@ */
3237 0, /* @tp_setattro@ */
3238 0, /* @tp_as_buffer@ */
3239 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3240 Py_TPFLAGS_BASETYPE
,
3243 "Shake128([perso = STR], [func = STR]): SHAKE128/cSHAKE128 XOF.",
3245 0, /* @tp_traverse@ */
3247 0, /* @tp_richcompare@ */
3248 0, /* @tp_weaklistoffset@ */
3250 0, /* @tp_iternext@ */
3251 0, /* @tp_methods@ */
3252 0, /* @tp_members@ */
3253 0, /* @tp_getset@ */
3256 0, /* @tp_descr_get@ */
3257 0, /* @tp_descr_set@ */
3258 0, /* @tp_dictoffset@ */
3260 PyType_GenericAlloc
, /* @tp_alloc@ */
3261 shake128_pynew
, /* @tp_new@ */
3266 static const PyTypeObject shake256_pytype_skel
= {
3267 PyObject_HEAD_INIT(0) 0, /* Header */
3268 "Shake256", /* @tp_name@ */
3269 0, /* @tp_basicsize@ */
3270 0, /* @tp_itemsize@ */
3272 0, /* @tp_dealloc@ */
3274 0, /* @tp_getattr@ */
3275 0, /* @tp_setattr@ */
3276 0, /* @tp_compare@ */
3278 0, /* @tp_as_number@ */
3279 0, /* @tp_as_sequence@ */
3280 0, /* @tp_as_mapping@ */
3284 0, /* @tp_getattro@ */
3285 0, /* @tp_setattro@ */
3286 0, /* @tp_as_buffer@ */
3287 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3288 Py_TPFLAGS_BASETYPE
,
3291 "Shake256([perso = STR], [func = STR]): SHAKE256/cSHAKE256 XOF.",
3293 0, /* @tp_traverse@ */
3295 0, /* @tp_richcompare@ */
3296 0, /* @tp_weaklistoffset@ */
3298 0, /* @tp_iternext@ */
3299 0, /* @tp_methods@ */
3300 0, /* @tp_members@ */
3301 0, /* @tp_getset@ */
3304 0, /* @tp_descr_get@ */
3305 0, /* @tp_descr_set@ */
3306 0, /* @tp_dictoffset@ */
3308 PyType_GenericAlloc
, /* @tp_alloc@ */
3309 shake256_pynew
, /* @tp_new@ */
3314 /*----- Pseudorandom permutations -----------------------------------------*/
3316 static PyTypeObject
*gcprp_pytype
, *gprp_pytype
;
3318 typedef struct prpinfo
{
3323 void (*init
)(void *, const void *, size_t);
3324 void (*eblk
)(void *, const void *, void *);
3325 void (*dblk
)(void *, const void *, void *);
3328 #define PRP_DEF(PRE, pre) \
3329 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
3330 { pre##_init(ctx, k, ksz); } \
3331 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
3333 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3334 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3336 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
3338 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3339 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3341 static const prpinfo pre##_prpinfo = { \
3342 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
3343 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
3347 static const struct prpinfo
*const gprptab
[] = {
3348 #define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
3353 typedef struct gcprp_pyobj
{
3354 PyHeapTypeObject ty
;
3357 #define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
3359 typedef struct gprp_pyobj
{
3363 #define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
3364 #define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
3366 typedef struct prp
{
3371 static PyObject
*gprp_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
3373 static const char *const kwlist
[] = { "key", 0 };
3376 const prpinfo
*prp
= GCPRP_PRP(ty
);
3379 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
3381 if (keysz(sz
, prp
->keysz
) != sz
) VALERR("bad key length");
3382 me
= (PyObject
*)ty
->tp_alloc(ty
, 0);
3384 prp
->init(GPRP_CTX(me
), k
, sz
);
3391 static void gprp_pydealloc(PyObject
*me
)
3392 { Py_DECREF(me
->ob_type
); FREEOBJ(me
); }
3394 static PyObject
*gcprp_pywrap(const prpinfo
*prp
)
3396 gcprp_pyobj
*g
= newtype(gcprp_pytype
, 0, prp
->name
);
3398 g
->ty
.ht_type
.tp_basicsize
= sizeof(gprp_pyobj
) + prp
->ctxsz
;
3399 g
->ty
.ht_type
.tp_base
= gprp_pytype
;
3400 Py_INCREF(gprp_pytype
);
3401 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
3402 Py_TPFLAGS_BASETYPE
|
3403 Py_TPFLAGS_HEAPTYPE
);
3404 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
3405 g
->ty
.ht_type
.tp_free
= 0;
3406 g
->ty
.ht_type
.tp_new
= gprp_pynew
;
3407 typeready(&g
->ty
.ht_type
);
3408 return ((PyObject
*)g
);
3411 static PyObject
*gcpget_name(PyObject
*me
, void *hunoz
)
3412 { return (PyString_FromString(GCPRP_PRP(me
)->name
)); }
3413 static PyObject
*gcpget_keysz(PyObject
*me
, void *hunoz
)
3414 { return (keysz_pywrap(GCPRP_PRP(me
)->keysz
)); }
3415 static PyObject
*gcpget_blksz(PyObject
*me
, void *hunoz
)
3416 { return (PyInt_FromLong(GCPRP_PRP(me
)->blksz
)); }
3418 static PyObject
*gpmeth_encrypt(PyObject
*me
, PyObject
*arg
)
3424 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &p
, &n
)) goto end
;
3425 if (n
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
3426 rc
= bytestring_pywrap(0, n
);
3427 GPRP_PRP(me
)->eblk(GPRP_CTX(me
), p
, PyString_AS_STRING(rc
));
3432 static PyObject
*gpmeth_decrypt(PyObject
*me
, PyObject
*arg
)
3438 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &p
, &n
)) goto end
;
3439 if (n
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
3440 rc
= bytestring_pywrap(0, n
);
3441 GPRP_PRP(me
)->dblk(GPRP_CTX(me
), p
, PyString_AS_STRING(rc
));
3446 static const PyGetSetDef gcprp_pygetset
[] = {
3447 #define GETSETNAME(op, name) gcp##op##_##name
3448 GET (keysz
, "CP.keysz -> acceptable key sizes")
3449 GET (blksz
, "CP.blksz -> block size")
3450 GET (name
, "CP.name -> name of this kind of PRP")
3455 static const PyMethodDef gprp_pymethods
[] = {
3456 #define METHNAME(name) gpmeth_##name
3457 METH (encrypt
, "P.encrypt(PT) -> CT")
3458 METH (decrypt
, "P.decrypt(CT) -> PT")
3463 static const PyTypeObject gcprp_pytype_skel
= {
3464 PyObject_HEAD_INIT(0) 0, /* Header */
3465 "GCPRP", /* @tp_name@ */
3466 sizeof(gcprp_pyobj
), /* @tp_basicsize@ */
3467 0, /* @tp_itemsize@ */
3469 0, /* @tp_dealloc@ */
3471 0, /* @tp_getattr@ */
3472 0, /* @tp_setattr@ */
3473 0, /* @tp_compare@ */
3475 0, /* @tp_as_number@ */
3476 0, /* @tp_as_sequence@ */
3477 0, /* @tp_as_mapping@ */
3481 0, /* @tp_getattro@ */
3482 0, /* @tp_setattro@ */
3483 0, /* @tp_as_buffer@ */
3484 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3485 Py_TPFLAGS_BASETYPE
,
3488 "Pseudorandom permutation metaclass.",
3490 0, /* @tp_traverse@ */
3492 0, /* @tp_richcompare@ */
3493 0, /* @tp_weaklistoffset@ */
3495 0, /* @tp_iternext@ */
3496 0, /* @tp_methods@ */
3497 0, /* @tp_members@ */
3498 PYGETSET(gcprp
), /* @tp_getset@ */
3501 0, /* @tp_descr_get@ */
3502 0, /* @tp_descr_set@ */
3503 0, /* @tp_dictoffset@ */
3505 PyType_GenericAlloc
, /* @tp_alloc@ */
3506 abstract_pynew
, /* @tp_new@ */
3511 static const PyTypeObject gprp_pytype_skel
= {
3512 PyObject_HEAD_INIT(0) 0, /* Header */
3513 "GPRP", /* @tp_name@ */
3514 sizeof(gprp_pyobj
), /* @tp_basicsize@ */
3515 0, /* @tp_itemsize@ */
3517 gprp_pydealloc
, /* @tp_dealloc@ */
3519 0, /* @tp_getattr@ */
3520 0, /* @tp_setattr@ */
3521 0, /* @tp_compare@ */
3523 0, /* @tp_as_number@ */
3524 0, /* @tp_as_sequence@ */
3525 0, /* @tp_as_mapping@ */
3529 0, /* @tp_getattro@ */
3530 0, /* @tp_setattro@ */
3531 0, /* @tp_as_buffer@ */
3532 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3533 Py_TPFLAGS_BASETYPE
,
3536 "Pseudorandom permutation, abstract base class.",
3538 0, /* @tp_traverse@ */
3540 0, /* @tp_richcompare@ */
3541 0, /* @tp_weaklistoffset@ */
3543 0, /* @tp_iternext@ */
3544 PYMETHODS(gprp
), /* @tp_methods@ */
3545 0, /* @tp_members@ */
3546 0, /* @tp_getset@ */
3549 0, /* @tp_descr_get@ */
3550 0, /* @tp_descr_set@ */
3551 0, /* @tp_dictoffset@ */
3553 PyType_GenericAlloc
, /* @tp_alloc@ */
3554 abstract_pynew
, /* @tp_new@ */
3559 /*----- Main code ---------------------------------------------------------*/
3561 static const PyMethodDef methods
[] = {
3562 #define METHNAME(func) meth_##func
3563 #define METH_HDANCE(hdance, HDance) METH(hdance##_prf, \
3564 "" #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
3565 METH_HDANCE(hsalsa20
, "HSalsa20")
3566 METH_HDANCE(hsalsa2012
, "HSalsa20/12")
3567 METH_HDANCE(hsalsa208
, "HSalsa20/8")
3568 METH_HDANCE(hchacha20
, "HChaCha20")
3569 METH_HDANCE(hchacha12
, "HChaCha12")
3570 METH_HDANCE(hchacha8
, "HChaCha8")
3576 void algorithms_pyinit(void)
3578 INITTYPE(keysz
, root
);
3579 INITTYPE(keyszany
, keysz
);
3580 INITTYPE(keyszrange
, keysz
);
3581 INITTYPE(keyszset
, keysz
);
3582 INITTYPE(gccipher
, type
);
3583 INITTYPE(gcipher
, root
);
3584 INITTYPE(gcaead
, type
);
3585 INITTYPE(gaeadkey
, root
);
3586 INITTYPE(gcaeadaad
, type
);
3587 INITTYPE(gaeadaad
, root
);
3588 INITTYPE(gcaeadenc
, type
);
3589 INITTYPE(gaeadenc
, root
);
3590 INITTYPE(gcaeaddec
, type
);
3591 INITTYPE(gaeaddec
, root
);
3592 INITTYPE(gchash
, type
);
3593 INITTYPE(ghash
, root
);
3594 INITTYPE(gcmac
, type
);
3595 INITTYPE(gmac
, type
);
3596 INITTYPE(gmhash
, ghash
);
3597 INITTYPE(poly1305cls
, type
);
3598 INITTYPE_META(poly1305key
, type
, poly1305cls
);
3599 INITTYPE(poly1305hash
, root
);
3600 INITTYPE(kxvik
, root
);
3601 INITTYPE(shake
, root
);
3602 INITTYPE(shake128
, shake
);
3603 INITTYPE(shake256
, shake
);
3604 INITTYPE(gcprp
, type
);
3605 INITTYPE(gprp
, root
);
3606 addmethods(methods
);
3609 GEN(gcciphers
, cipher
)
3613 #define gcprp prpinfo
3616 void algorithms_pyinsert(PyObject
*mod
)
3619 INSERT("KeySZ", keysz_pytype
);
3620 INSERT("KeySZAny", keyszany_pytype
);
3621 INSERT("KeySZRange", keyszrange_pytype
);
3622 INSERT("KeySZSet", keyszset_pytype
);
3623 INSERT("GCCipher", gccipher_pytype
);
3624 INSERT("GCipher", gcipher_pytype
);
3625 INSERT("gcciphers", gcciphers());
3626 INSERT("GCAEAD", gcaead_pytype
);
3627 INSERT("GAEKey", gaeadkey_pytype
);
3628 INSERT("GAEAADClass", gcaeadaad_pytype
);
3629 INSERT("GAEAAD", gaeadaad_pytype
);
3630 INSERT("GAEEncClass", gcaeadenc_pytype
);
3631 INSERT("GAEEnc", gaeadenc_pytype
);
3632 INSERT("GAEDecClass", gcaeaddec_pytype
);
3633 INSERT("GAEDec", gaeaddec_pytype
);
3634 INSERT("gcaeads", gcaeads());
3635 INSERT("GCHash", gchash_pytype
);
3636 INSERT("GHash", ghash_pytype
);
3637 INSERT("gchashes", d
= gchashes());
3638 sha_pyobj
= PyDict_GetItemString(d
, "sha"); Py_INCREF(sha_pyobj
);
3639 has160_pyobj
= PyDict_GetItemString(d
, "has160"); Py_INCREF(has160_pyobj
);
3640 INSERT("GCMAC", gcmac_pytype
);
3641 INSERT("GMAC", gmac_pytype
);
3642 INSERT("GMACHash", gmhash_pytype
);
3643 INSERT("gcmacs", gcmacs());
3644 INSERT("Poly1305Class", poly1305cls_pytype
);
3645 INSERT("poly1305", poly1305key_pytype
);
3646 INSERT("Poly1305Hash", poly1305hash_pytype
);
3647 INSERT("Keccak1600", kxvik_pytype
);
3648 INSERT("Shake", shake_pytype
);
3649 INSERT("Shake128", shake128_pytype
);
3650 INSERT("Shake256", shake256_pytype
);
3651 INSERT("GCPRP", gcprp_pytype
);
3652 INSERT("GPRP", gprp_pytype
);
3653 INSERT("gcprps", gcprps());
3656 /*----- That's all, folks -------------------------------------------------*/