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 PyVarObject_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 PyVarObject_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 PyVarObject_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 PyVarObject_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 };
531 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&:new", KWLIST
, convbin
, &k
))
533 if (keysz(k
.sz
, GCCIPHER_CC(ty
)->keysz
) != k
.sz
) VALERR("bad key length");
534 return (gcipher_pywrap((PyObject
*)ty
,
535 GC_INIT(GCCIPHER_CC(ty
), k
.p
, k
.sz
)));
540 PyObject
*gccipher_pywrap(gccipher
*cc
)
542 gccipher_pyobj
*g
= newtype(gccipher_pytype
, 0, cc
->name
);
544 g
->ty
.ht_type
.tp_basicsize
= sizeof(gcipher_pyobj
);
545 g
->ty
.ht_type
.tp_base
= gcipher_pytype
;
546 Py_INCREF(gcipher_pytype
);
547 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
548 Py_TPFLAGS_BASETYPE
|
549 Py_TPFLAGS_HEAPTYPE
);
550 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
551 g
->ty
.ht_type
.tp_free
= 0;
552 g
->ty
.ht_type
.tp_new
= gcipher_pynew
;
553 typeready(&g
->ty
.ht_type
);
554 return ((PyObject
*)g
);
557 static void gcipher_pydealloc(PyObject
*me
)
559 GC_DESTROY(GCIPHER_C(me
));
560 Py_DECREF(Py_TYPE(me
));
564 static PyObject
*gccget_name(PyObject
*me
, void *hunoz
)
565 { return (TEXT_FROMSTR(GCCIPHER_CC(me
)->name
)); }
567 static PyObject
*gccget_keysz(PyObject
*me
, void *hunoz
)
568 { return (keysz_pywrap(GCCIPHER_CC(me
)->keysz
)); }
570 static PyObject
*gccget_blksz(PyObject
*me
, void *hunoz
)
571 { return (PyInt_FromLong(GCCIPHER_CC(me
)->blksz
)); }
573 static PyObject
*gcmeth_encrypt(PyObject
*me
, PyObject
*arg
)
578 if (!PyArg_ParseTuple(arg
, "O&:encrypt", convbin
, &m
)) return (0);
579 rc
= bytestring_pywrap(0, m
.sz
);
580 GC_ENCRYPT(GCIPHER_C(me
), m
.p
, BIN_PTR(rc
), m
.sz
);
584 static PyObject
*gcmeth_enczero(PyObject
*me
, PyObject
*arg
)
590 if (!PyArg_ParseTuple(arg
, "i:enczero", &sz
)) return (0);
591 rc
= bytestring_pywrap(0, sz
);
594 GC_ENCRYPT(GCIPHER_C(me
), p
, p
, sz
);
598 static PyObject
*gcmeth_decrypt(PyObject
*me
, PyObject
*arg
)
603 if (!PyArg_ParseTuple(arg
, "O&:decrypt", convbin
, &c
)) return (0);
604 rc
= bytestring_pywrap(0, c
.sz
);
605 GC_DECRYPT(GCIPHER_C(me
), c
.p
, BIN_PTR(rc
), c
.sz
);
609 static PyObject
*gcmeth_deczero(PyObject
*me
, PyObject
*arg
)
615 if (!PyArg_ParseTuple(arg
, "i:deczero", &sz
)) return (0);
616 rc
= bytestring_pywrap(0, sz
);
619 GC_DECRYPT(GCIPHER_C(me
), p
, p
, sz
);
623 static PyObject
*gcmeth_setiv(PyObject
*me
, PyObject
*arg
)
627 if (!PyArg_ParseTuple(arg
, "O&:setiv", convbin
, &iv
)) goto end
;
628 if (!GCIPHER_C(me
)->ops
->setiv
) VALERR("`setiv' not supported");
629 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
630 if (iv
.sz
!= GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("bad IV length");
631 GC_SETIV(GCIPHER_C(me
), iv
.p
);
637 static PyObject
*gcmeth_bdry(PyObject
*me
)
639 if (!GCIPHER_C(me
)->ops
->bdry
) VALERR("`bdry' not supported");
640 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
641 GC_BDRY(GCIPHER_C(me
));
647 static const PyGetSetDef gccipher_pygetset
[] = {
648 #define GETSETNAME(op, name) gcc##op##_##name
649 GET (keysz
, "CC.keysz -> acceptable key sizes")
650 GET (blksz
, "CC.blksz -> block size, or zero")
651 GET (name
, "CC.name -> name of this kind of cipher")
656 static const PyMethodDef gcipher_pymethods
[] = {
657 #define METHNAME(name) gcmeth_##name
658 METH (encrypt
, "C.encrypt(PT) -> CT")
659 METH (enczero
, "C.enczero(N) -> CT")
660 METH (decrypt
, "C.decrypt(CT) -> PT")
661 METH (deczero
, "C.deczero(N) -> PT")
662 METH (setiv
, "C.setiv(IV)")
663 NAMETH(bdry
, "C.bdry()")
668 static const PyTypeObject gccipher_pytype_skel
= {
669 PyVarObject_HEAD_INIT(0, 0) /* Header */
670 "GCCipher", /* @tp_name@ */
671 sizeof(gccipher_pyobj
), /* @tp_basicsize@ */
672 0, /* @tp_itemsize@ */
674 0, /* @tp_dealloc@ */
676 0, /* @tp_getattr@ */
677 0, /* @tp_setattr@ */
678 0, /* @tp_compare@ */
680 0, /* @tp_as_number@ */
681 0, /* @tp_as_sequence@ */
682 0, /* @tp_as_mapping@ */
686 0, /* @tp_getattro@ */
687 0, /* @tp_setattro@ */
688 0, /* @tp_as_buffer@ */
689 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
693 "Symmetric cipher metaclass.",
695 0, /* @tp_traverse@ */
697 0, /* @tp_richcompare@ */
698 0, /* @tp_weaklistoffset@ */
700 0, /* @tp_iternext@ */
701 0, /* @tp_methods@ */
702 0, /* @tp_members@ */
703 PYGETSET(gccipher
), /* @tp_getset@ */
706 0, /* @tp_descr_get@ */
707 0, /* @tp_descr_set@ */
708 0, /* @tp_dictoffset@ */
710 PyType_GenericAlloc
, /* @tp_alloc@ */
711 abstract_pynew
, /* @tp_new@ */
716 static const PyTypeObject gcipher_pytype_skel
= {
717 PyVarObject_HEAD_INIT(0, 0) /* Header */
718 "GCipher", /* @tp_name@ */
719 sizeof(gcipher_pyobj
), /* @tp_basicsize@ */
720 0, /* @tp_itemsize@ */
722 gcipher_pydealloc
, /* @tp_dealloc@ */
724 0, /* @tp_getattr@ */
725 0, /* @tp_setattr@ */
726 0, /* @tp_compare@ */
728 0, /* @tp_as_number@ */
729 0, /* @tp_as_sequence@ */
730 0, /* @tp_as_mapping@ */
734 0, /* @tp_getattro@ */
735 0, /* @tp_setattro@ */
736 0, /* @tp_as_buffer@ */
737 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
741 "Symmetric cipher, abstract base class.",
743 0, /* @tp_traverse@ */
745 0, /* @tp_richcompare@ */
746 0, /* @tp_weaklistoffset@ */
748 0, /* @tp_iternext@ */
749 PYMETHODS(gcipher
), /* @tp_methods@ */
750 0, /* @tp_members@ */
754 0, /* @tp_descr_get@ */
755 0, /* @tp_descr_set@ */
756 0, /* @tp_dictoffset@ */
758 PyType_GenericAlloc
, /* @tp_alloc@ */
759 abstract_pynew
, /* @tp_new@ */
764 /*----- Authenticated encryption ------------------------------------------*/
766 static PyTypeObject
*gcaead_pytype
, *gaeadkey_pytype
;
767 static PyTypeObject
*gcaeadaad_pytype
, *gaeadaad_pytype
;
768 static PyTypeObject
*gcaeadenc_pytype
, *gaeadenc_pytype
;
769 static PyTypeObject
*gcaeaddec_pytype
, *gaeaddec_pytype
;
771 typedef struct gcaead_pyobj
{
774 struct gcaeadaad_pyobj
*aad
;
775 struct gcaeadenc_pyobj
*enc
;
776 struct gcaeaddec_pyobj
*dec
;
779 #define GCAEAD_PYCHECK(o) PyObject_TypeCheck((o), gcaead_pytype)
780 #define GCAEAD_AEC(o) (((gcaead_pyobj *)(o))->aec)
781 #define GCAEAD_AAD(o) (((gcaead_pyobj *)(o))->aad)
782 #define GCAEAD_ENC(o) (((gcaead_pyobj *)(o))->enc)
783 #define GCAEAD_DEC(o) (((gcaead_pyobj *)(o))->dec)
784 static PyObject
*gcaead_pywrap(gcaead
*);
786 typedef struct gaeadkey_pyobj
{
791 #define GAEADKEY_PYCHECK(o) PyObject_TypeCheck((o), gaeadkey_pytype)
792 #define GAEADKEY_K(o) (((gaeadkey_pyobj *)(o))->k)
794 typedef struct gcaeadaad_pyobj
{
799 #define GCAEADAAD_KEY(o) (((gcaeadaad_pyobj *)(o))->key)
800 static PyObject
*gaeadaad_pywrap(PyObject
*, gaead_aad
*, unsigned, size_t);
802 typedef struct gaeadaad_pyobj
{
806 #define AEADF_DEAD 32768u
810 #define GAEADAAD_PYCHECK(o) PyObject_TypeCheck((o), gaeadaad_pytype)
811 #define GAEADAAD_A(o) (((gaeadaad_pyobj *)(o))->a)
812 #define GAEADAAD_F(o) (((gaeadaad_pyobj *)(o))->f)
813 #define GAEADAAD_HSZ(o) (((gaeadaad_pyobj *)(o))->hsz)
814 #define GAEADAAD_HLEN(o) (((gaeadaad_pyobj *)(o))->hlen)
816 typedef struct gcaeadenc_pyobj
{
821 #define GCAEADENC_KEY(o) (((gcaeadenc_pyobj *)(o))->key)
822 static PyObject
*gaeadenc_pywrap(PyObject
*, gaead_enc
*, unsigned,
823 size_t, size_t, size_t);
825 typedef struct gaeadenc_pyobj
{
830 size_t hsz
, msz
, tsz
;
834 #define GAEADENC_PYCHECK(o) PyObject_TypeCheck((o), gaeadenc_pytype)
835 #define GAEADENC_AAD(o) (((gaeadenc_pyobj *)(o))->aad)
836 #define GAEADENC_E(o) (((gaeadenc_pyobj *)(o))->e)
837 #define GAEADENC_F(o) (((gaeadenc_pyobj *)(o))->f)
838 #define GAEADENC_HSZ(o) (((gaeadenc_pyobj *)(o))->hsz)
839 #define GAEADENC_MSZ(o) (((gaeadenc_pyobj *)(o))->msz)
840 #define GAEADENC_TSZ(o) (((gaeadenc_pyobj *)(o))->tsz)
841 #define GAEADENC_MLEN(o) (((gaeadenc_pyobj *)(o))->mlen)
843 typedef struct gcaeaddec_pyobj
{
848 #define GCAEADDEC_KEY(o) (((gcaeaddec_pyobj *)(o))->key)
849 static PyObject
*gaeaddec_pywrap(PyObject
*, gaead_dec
*, unsigned,
850 size_t, size_t, size_t);
852 typedef struct gaeaddec_pyobj
{
857 size_t hsz
, csz
, tsz
;
861 #define GAEADDEC_PYCHECK(o) PyObject_TypeCheck((o), gaeaddec_pytype)
862 #define GAEADDEC_AAD(o) (((gaeaddec_pyobj *)(o))->aad)
863 #define GAEADDEC_D(o) (((gaeaddec_pyobj *)(o))->d)
864 #define GAEADDEC_F(o) (((gaeaddec_pyobj *)(o))->f)
865 #define GAEADDEC_HSZ(o) (((gaeaddec_pyobj *)(o))->hsz)
866 #define GAEADDEC_CSZ(o) (((gaeaddec_pyobj *)(o))->csz)
867 #define GAEADDEC_TSZ(o) (((gaeaddec_pyobj *)(o))->tsz)
868 #define GAEADDEC_CLEN(o) (((gaeaddec_pyobj *)(o))->clen)
870 static PyObject
*gaeadkey_pywrap(PyObject
*cobj
, gaead_key
*k
)
874 if (!cobj
) cobj
= gcaead_pywrap((/*unconst*/ gcaead
*)GAEAD_CLASS(k
));
875 else Py_INCREF(cobj
);
876 gk
= PyObject_NEW(gaeadkey_pyobj
, (PyTypeObject
*)cobj
);
878 return ((PyObject
*)gk
);
881 static PyObject
*gaeadkey_pynew(PyTypeObject
*ty
,
882 PyObject
*arg
, PyObject
*kw
)
884 static const char *const kwlist
[] = { "k", 0 };
887 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&:new", KWLIST
, convbin
, &k
))
889 if (keysz(k
.sz
, GCAEAD_AEC(ty
)->keysz
) != k
.sz
) VALERR("bad key length");
890 return (gaeadkey_pywrap((PyObject
*)ty
,
891 GAEAD_KEY(GCAEAD_AEC(ty
), k
.p
, k
.sz
)));
896 static PyObject
*gcaead_pywrap(gcaead
*aec
)
899 gcaeadaad_pyobj
*gca
;
900 gcaeadenc_pyobj
*gce
;
901 gcaeaddec_pyobj
*gcd
;
903 #define MKTYPE(obj, thing, newfn, namefmt) do { \
904 (obj) = newtype(gcaead_pytype, 0, 0); \
905 (obj)->ty.ht_name = TEXT_FORMAT(namefmt, aec->name); \
906 (obj)->ty.ht_type.tp_name = TEXT_PTR((obj)->ty.ht_name); \
907 (obj)->ty.ht_type.tp_basicsize = sizeof(gaead##thing##_pyobj); \
908 (obj)->ty.ht_type.tp_base = gaead##thing##_pytype; \
909 Py_INCREF(gaead##thing##_pytype); \
910 (obj)->ty.ht_type.tp_flags = \
911 (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE); \
912 (obj)->ty.ht_type.tp_alloc = PyType_GenericAlloc; \
913 (obj)->ty.ht_type.tp_free = 0; \
914 (obj)->ty.ht_type.tp_new = newfn; \
915 typeready(&(obj)->ty.ht_type); \
918 MKTYPE(gck
, key
, gaeadkey_pynew
, "%s(key)");
919 MKTYPE(gca
, aad
, abstract_pynew
, "%s(aad-hash)");
920 MKTYPE(gce
, enc
, abstract_pynew
, "%s(encrypt)");
921 MKTYPE(gcd
, dec
, abstract_pynew
, "%s(decrypt)");
925 gck
->aec
= aec
; gck
->aad
= gca
; gck
->enc
= gce
; gck
->dec
= gcd
;
926 gca
->key
= gce
->key
= gcd
->key
= gck
;
927 return ((PyObject
*)gck
);
930 static void gaeadkey_pydealloc(PyObject
*me
)
931 { GAEAD_DESTROY(GAEADKEY_K(me
)); Py_DECREF(Py_TYPE(me
)); FREEOBJ(me
); }
933 static PyObject
*gcaeget_name(PyObject
*me
, void *hunoz
)
934 { return (TEXT_FROMSTR(GCAEAD_AEC(me
)->name
)); }
936 static PyObject
*gcaeget_keysz(PyObject
*me
, void *hunoz
)
937 { return (keysz_pywrap(GCAEAD_AEC(me
)->keysz
)); }
939 static PyObject
*gcaeget_noncesz(PyObject
*me
, void *hunoz
)
940 { return (keysz_pywrap(GCAEAD_AEC(me
)->noncesz
)); }
942 static PyObject
*gcaeget_tagsz(PyObject
*me
, void *hunoz
)
943 { return (keysz_pywrap(GCAEAD_AEC(me
)->tagsz
)); }
945 static PyObject
*gcaeget_blksz(PyObject
*me
, void *hunoz
)
946 { return (PyInt_FromLong(GCAEAD_AEC(me
)->blksz
)); }
948 static PyObject
*gcaeget_bufsz(PyObject
*me
, void *hunoz
)
949 { return (PyInt_FromLong(GCAEAD_AEC(me
)->bufsz
)); }
951 static PyObject
*gcaeget_ohd(PyObject
*me
, void *hunoz
)
952 { return (PyInt_FromLong(GCAEAD_AEC(me
)->ohd
)); }
954 static PyObject
*gcaeget_flags(PyObject
*me
, void *hunoz
)
955 { return (PyInt_FromLong(GCAEAD_AEC(me
)->f
)); }
957 static const PyGetSetDef gcaead_pygetset
[] = {
958 #define GETSETNAME(op, name) gcae##op##_##name
959 GET (keysz
, "AEC.keysz -> acceptable key sizes")
960 GET (noncesz
, "AEC.noncesz -> acceptable nonce sizes")
961 GET (tagsz
, "AEC.tagsz -> acceptable tag sizes")
962 GET (blksz
, "AEC.blksz -> block size, or zero")
963 GET (bufsz
, "AEC.bufsz -> amount of data buffered internally")
964 GET (ohd
, "AEC.ohd -> maximum encryption overhead")
965 GET (name
, "AEC.name -> name of this kind of AEAD scheme")
966 GET (flags
, "AEC.flags -> mask of `AEADF_...' flags")
971 static PyObject
*gaekmeth_aad(PyObject
*me
)
973 const gaead_key
*k
= GAEADKEY_K(me
);
976 if (k
->ops
->c
->f
&AEADF_AADNDEP
)
977 VALERR("aad must be associated with enc/dec op");
978 rc
= gaeadaad_pywrap((PyObject
*)GCAEAD_AAD(Py_TYPE(me
)),
984 static int check_aead_encdec(const gcaead
*aec
, unsigned *f_out
, size_t nsz
,
985 PyObject
*hszobj
, size_t *hsz_out
,
986 PyObject
*mszobj
, size_t *msz_out
,
987 PyObject
*tszobj
, size_t *tsz_out
)
989 unsigned f
= 0, miss
;
992 if (hszobj
!= Py_None
)
993 { f
|= AEADF_PCHSZ
; if (!convszt(hszobj
, hsz_out
)) goto end
; }
994 if (mszobj
!= Py_None
)
995 { f
|= AEADF_PCMSZ
; if (!convszt(mszobj
, msz_out
)) goto end
; }
996 if (tszobj
!= Py_None
)
997 { f
|= AEADF_PCTSZ
; if (!convszt(tszobj
, tsz_out
)) goto end
; }
999 if (miss
&AEADF_PCHSZ
) VALERR("header length precommitment required");
1000 if (miss
&AEADF_PCMSZ
) VALERR("message length precommitment required");
1001 if (miss
&AEADF_PCTSZ
) VALERR("tag length precommitment required");
1002 if (keysz(nsz
, aec
->noncesz
) != nsz
) VALERR("bad nonce length");
1003 if (tszobj
!= Py_None
&& keysz(*tsz_out
, aec
->tagsz
) != *tsz_out
)
1004 VALERR("bad tag length");
1005 *f_out
= f
| aec
->f
; rc
= 0;
1010 static PyObject
*gaekmeth_enc(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1012 static const char *const kwlist
[] = { "nonce", "hsz", "msz", "tsz", 0 };
1013 const gaead_key
*k
= GAEADKEY_K(me
);
1017 PyObject
*hszobj
= Py_None
, *mszobj
= Py_None
, *tszobj
= Py_None
;
1018 size_t hsz
= 0, msz
= 0, tsz
= 0;
1021 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&|OOO:enc", KWLIST
,
1022 convbin
, &n
, &hszobj
, &mszobj
, &tszobj
))
1024 if (check_aead_encdec(k
->ops
->c
, &f
, n
.sz
,
1025 hszobj
, &hsz
, mszobj
, &msz
, tszobj
, &tsz
))
1027 e
= GAEAD_ENC(GAEADKEY_K(me
), n
.p
, n
.sz
, hsz
, msz
, tsz
);
1028 if (!e
) VALERR("bad aead parameter combination");
1029 rc
= gaeadenc_pywrap((PyObject
*)GCAEAD_ENC(Py_TYPE(me
)),
1030 e
, f
, hsz
, msz
, tsz
);
1035 static PyObject
*gaekmeth_dec(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1037 static const char *const kwlist
[] = { "nonce", "hsz", "csz", "tsz", 0 };
1038 const gaead_key
*k
= GAEADKEY_K(me
);
1042 PyObject
*hszobj
= Py_None
, *cszobj
= Py_None
, *tszobj
= Py_None
;
1043 size_t hsz
= 0, csz
= 0, tsz
= 0;
1046 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&|OOO:dec", KWLIST
,
1047 convbin
, &n
, &hszobj
, &cszobj
, &tszobj
))
1049 if (check_aead_encdec(k
->ops
->c
, &f
, n
.sz
,
1050 hszobj
, &hsz
, cszobj
, &csz
, tszobj
, &tsz
))
1052 d
= GAEAD_DEC(GAEADKEY_K(me
), n
.p
, n
.sz
, hsz
, csz
, tsz
);
1053 if (!d
) VALERR("bad aead parameter combination");
1054 rc
= gaeaddec_pywrap((PyObject
*)GCAEAD_DEC(Py_TYPE(me
)),
1055 d
, f
, hsz
, csz
, tsz
);
1060 static const PyMethodDef gaeadkey_pymethods
[] = {
1061 #define METHNAME(name) gaekmeth_##name
1062 NAMETH(aad
, "KEY.aad() -> AAD")
1063 KWMETH(enc
, "KEY.enc(NONCE, [hsz], [msz], [tsz]) -> ENC")
1064 KWMETH(dec
, "KEY.dec(NONCE, [hsz], [csz], [tsz]) -> DEC")
1069 static PyObject
*gaeadaad_pywrap(PyObject
*cobj
, gaead_aad
*a
,
1070 unsigned f
, size_t hsz
)
1074 assert(cobj
); Py_INCREF(cobj
);
1075 ga
= PyObject_NEW(gaeadaad_pyobj
, (PyTypeObject
*)cobj
);
1076 ga
->a
= a
; ga
->f
= f
; ga
->hsz
= hsz
; ga
->hlen
= 0;
1077 return ((PyObject
*)ga
);
1080 static void gaeadaad_pydealloc(PyObject
*me
)
1082 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1084 if (ga
->a
) GAEAD_DESTROY(ga
->a
);
1085 Py_DECREF(Py_TYPE(me
)); FREEOBJ(me
);
1088 static int gaea_check(PyObject
*me
)
1090 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1093 if ((ga
->f
&AEADF_DEAD
) || !ga
->a
) VALERR("aad object no longer active");
1099 static void gaea_invalidate(gaeadaad_pyobj
*ga
)
1100 { if (ga
) ga
->f
|= AEADF_DEAD
; }
1102 static void gaea_sever(gaeadaad_pyobj
**ga_inout
)
1104 gaeadaad_pyobj
*ga
= *ga_inout
;
1105 if (ga
) { ga
->f
|= AEADF_DEAD
; ga
->a
= 0; Py_DECREF(ga
); *ga_inout
= 0; }
1108 static PyObject
*gaeaget_hsz(PyObject
*me
, void *hunoz
)
1110 if (gaea_check(me
)) return (0);
1111 else if (GAEADAAD_F(me
)&AEADF_PCHSZ
) return getulong(GAEADAAD_HSZ(me
));
1115 static PyObject
*gaeaget_hlen(PyObject
*me
, void *hunoz
)
1116 { return (gaea_check(me
) ?
0 : getulong(GAEADAAD_HLEN(me
))); }
1118 static const PyGetSetDef gaeadaad_pygetset
[] = {
1119 #define GETSETNAME(op, name) gaea##op##_##name
1120 GET (hsz
, "AAD.hsz -> precommitted header length or `None'")
1121 GET (hlen
, "AAD.hlen -> header length so far")
1126 static PyObject
*gaeameth_copy(PyObject
*me
)
1130 if (gaea_check(me
)) goto end
;
1131 if (GAEADAAD_F(me
)&AEADF_AADNDEP
)
1132 VALERR("can't duplicate nonce-dependent aad");
1133 rc
= gaeadaad_pywrap((PyObject
*)Py_TYPE(me
),
1134 GAEAD_DUP(GAEADAAD_A(me
)), 0, 0);
1135 GAEADAAD_HLEN(rc
) = GAEADAAD_HLEN(me
);
1140 static int gaeadaad_hash(PyObject
*me
, const void *h
, size_t hsz
)
1142 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1145 if (gaea_check(me
)) goto end
;
1146 if ((ga
->f
&AEADF_NOAAD
) && hsz
)
1147 VALERR("header data not permitted");
1148 if ((ga
->f
&AEADF_PCHSZ
) && hsz
> ga
->hsz
- ga
->hlen
)
1149 VALERR("too large for precommitted header length");
1150 GAEAD_HASH(ga
->a
, h
, hsz
); ga
->hlen
+= hsz
;
1157 static PyObject
*gaeameth_hash(PyObject
*me
, PyObject
*arg
)
1161 if (!PyArg_ParseTuple(arg
, "O&:hash", convbin
, &h
)) return (0);
1162 if (gaeadaad_hash(me
, h
.p
, h
.sz
)) return (0);
1166 #define GAEAMETH_HASHU_(n, W, w) \
1167 static PyObject *gaeameth_hashu##w(PyObject *me, PyObject *arg) \
1169 uint##n x; octet b[SZ_##W]; \
1170 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
1171 STORE##W(b, x); if (gaeadaad_hash(me, b, sizeof(b))) return (0); \
1174 DOUINTCONV(GAEAMETH_HASHU_
)
1176 #define GAEAMETH_HASHBUF_(n, W, w) \
1177 static PyObject *gaeameth_hashbuf##w(PyObject *me, PyObject *arg) \
1179 struct bin in; octet b[SZ_##W]; \
1180 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
1181 if (in.sz > MASK##n) TYERR("string too long"); \
1182 STORE##W(b, in.sz); if (gaeadaad_hash(me, b, sizeof(b))) goto end; \
1183 if (gaeadaad_hash(me, in.p, in.sz)) goto end; \
1188 DOUINTCONV(GAEAMETH_HASHBUF_
)
1190 static PyObject
*gaeameth_hashstrz(PyObject
*me
, PyObject
*arg
)
1193 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
1194 if (gaeadaad_hash(me
, p
, strlen(p
) + 1)) return (0);
1198 static const PyMethodDef gaeadaad_pymethods
[] = {
1199 #define METHNAME(name) gaeameth_##name
1200 NAMETH(copy
, "AAD.copy() -> AAD'")
1201 METH (hash
, "AAD.hash(H)")
1202 #define METHU_(n, W, w) METH(hashu##w, "AAD.hashu" #w "(WORD)")
1205 #define METHBUF_(n, W, w) METH(hashbuf##w, "AAD.hashbuf" #w "(BYTES)")
1206 DOUINTCONV(METHBUF_
)
1208 METH (hashstrz
, "AAD.hashstrz(STRING)")
1213 static PyObject
*gaeadenc_pywrap(PyObject
*cobj
, gaead_enc
*e
, unsigned f
,
1214 size_t hsz
, size_t msz
, size_t tsz
)
1218 assert(cobj
); Py_INCREF(cobj
);
1219 ge
= PyObject_NEW(gaeadenc_pyobj
, (PyTypeObject
*)cobj
);
1220 ge
->e
= e
; ge
->f
= f
; ge
->hsz
= hsz
; ge
->msz
= msz
; ge
->tsz
= tsz
;
1221 ge
->aad
= 0; ge
->mlen
= 0;
1222 return ((PyObject
*)ge
);
1225 static void gaeadenc_pydealloc(PyObject
*me
)
1227 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1229 gaea_sever(&ge
->aad
); GAEAD_DESTROY(ge
->e
);
1230 Py_DECREF(Py_TYPE(me
)); FREEOBJ(me
);
1233 static PyObject
*gaeeget_hsz(PyObject
*me
, void *hunoz
)
1235 if (GAEADENC_F(me
)&AEADF_PCHSZ
) return getulong(GAEADENC_HSZ(me
));
1239 static PyObject
*gaeeget_msz(PyObject
*me
, void *hunoz
)
1241 if (GAEADENC_F(me
)&AEADF_PCMSZ
) return getulong(GAEADENC_MSZ(me
));
1245 static PyObject
*gaeeget_tsz(PyObject
*me
, void *hunoz
)
1247 if (GAEADENC_F(me
)&AEADF_PCTSZ
) return getulong(GAEADENC_TSZ(me
));
1251 static PyObject
*gaeeget_mlen(PyObject
*me
, void *hunoz
)
1252 { return getulong(GAEADENC_MLEN(me
)); }
1254 static const PyGetSetDef gaeadenc_pygetset
[] = {
1255 #define GETSETNAME(op, name) gaee##op##_##name
1256 GET (hsz
, "ENC.hsz -> precommitted header length or `None'")
1257 GET (msz
, "ENC.msz -> precommitted message length or `None'")
1258 GET (tsz
, "ENC.tsz -> precommitted tag length or `None'")
1259 GET (mlen
, "ENC.mlen -> message length so far")
1264 static PyObject
*gaeemeth_aad(PyObject
*me
)
1266 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1269 if (!(ge
->f
&AEADF_AADNDEP
))
1270 rc
= gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(Py_TYPE(ge
))->aad
,
1271 GAEAD_AAD(ge
->e
), 0, 0);
1273 if ((ge
->f
&AEADF_AADFIRST
) && ge
->mlen
)
1274 VALERR("too late for aad");
1276 ge
->aad
= (gaeadaad_pyobj
*)
1277 gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(Py_TYPE(ge
))->aad
,
1278 GAEAD_AAD(ge
->e
), ge
->f
&(AEADF_PCHSZ
| AEADF_NOAAD
),
1281 rc
= (PyObject
*)ge
->aad
;
1287 static PyObject
*gaeemeth_reinit(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1289 static const char *const kwlist
[] = { "nonce", "hsz", "msz", "tsz", 0 };
1290 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1292 PyObject
*hszobj
= Py_None
, *mszobj
= Py_None
, *tszobj
= Py_None
;
1293 size_t hsz
= 0, msz
= 0, tsz
= 0;
1296 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&|OOO:enc", KWLIST
,
1297 convbin
, &n
, &hszobj
, &mszobj
, &tszobj
))
1299 if (check_aead_encdec(ge
->e
->ops
->c
, &f
, n
.sz
,
1300 hszobj
, &hsz
, mszobj
, &msz
, tszobj
, &tsz
))
1302 if (GAEAD_REINIT(ge
->e
, n
.p
, n
.sz
, hsz
, msz
, tsz
))
1303 VALERR("bad aead parameter combination");
1304 gaea_sever(&ge
->aad
);
1305 ge
->f
= f
; ge
->hsz
= hsz
; ge
->msz
= msz
; ge
->tsz
= tsz
;
1310 static PyObject
*gaeemeth_encrypt(PyObject
*me
, PyObject
*arg
)
1312 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1314 char *c
= 0; size_t csz
; buf b
;
1318 if (!PyArg_ParseTuple(arg
, "O&:encrypt", convbin
, &m
)) goto end
;
1319 if (ge
->f
&AEADF_AADFIRST
) {
1320 if ((ge
->f
&AEADF_PCHSZ
) && (ge
->aad ? ge
->aad
->hlen
: 0) != ge
->hsz
)
1321 VALERR("header doesn't match precommitted length");
1322 gaea_invalidate(ge
->aad
);
1324 if ((ge
->f
&AEADF_PCMSZ
) && m
.sz
> ge
->msz
- ge
->mlen
)
1325 VALERR("too large for precommitted message length");
1326 csz
= m
.sz
+ ge
->e
->ops
->c
->bufsz
; c
= xmalloc(csz
); buf_init(&b
, c
, csz
);
1327 err
= GAEAD_ENCRYPT(ge
->e
, m
.p
, m
.sz
, &b
); assert(!err
); (void)err
;
1328 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
); ge
->mlen
+= m
.sz
;
1334 static PyObject
*gaeemeth_done(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1336 static const char *const kwlist
[] = { "tsz", "aad", 0 };
1337 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1338 PyObject
*aad
= Py_None
;
1339 char *c
= 0; size_t csz
; buf b
;
1340 PyObject
*tszobj
= Py_None
; PyObject
*tag
; size_t tsz
;
1344 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|OO:done", KWLIST
,
1347 if (tszobj
!= Py_None
&& !convszt(tszobj
, &tsz
)) goto end
;
1348 if (aad
!= Py_None
&&
1349 !PyObject_TypeCheck(aad
,
1350 (PyTypeObject
*)GCAEADENC_KEY(Py_TYPE(me
))->aad
))
1351 TYERR("wanted aad");
1352 if ((ge
->f
&AEADF_AADNDEP
) && aad
!= Py_None
&& aad
!= (PyObject
*)ge
->aad
)
1353 VALERR("mismatched aad");
1354 if ((ge
->f
&AEADF_PCHSZ
) &&
1355 (aad
== Py_None ?
0 : GAEADAAD_HLEN(aad
)) != ge
->hsz
)
1356 VALERR("header doesn't match precommitted length");
1357 if ((ge
->f
&AEADF_PCMSZ
) && ge
->mlen
!= ge
->msz
)
1358 VALERR("message doesn't match precommitted length");
1359 if (tszobj
== Py_None
) {
1360 if (ge
->f
&AEADF_PCTSZ
) tsz
= ge
->tsz
;
1361 else tsz
= keysz(0, ge
->e
->ops
->c
->tagsz
);
1363 if ((ge
->f
&AEADF_PCTSZ
) && tsz
!= ge
->tsz
)
1364 VALERR("tag length doesn't match precommitted value");
1365 if (keysz(tsz
, ge
->e
->ops
->c
->tagsz
) != tsz
) VALERR("bad tag length");
1367 csz
= ge
->e
->ops
->c
->bufsz
; c
= xmalloc(csz
); buf_init(&b
, c
, csz
);
1368 tag
= bytestring_pywrap(0, tsz
);
1369 err
= GAEAD_DONE(ge
->e
, aad
== Py_None ?
0 : GAEADAAD_A(aad
), &b
,
1371 assert(!err
); (void)err
;
1372 buf_flip(&b
); rc
= Py_BuildValue("NN", bytestring_pywrapbuf(&b
), tag
);
1378 static const PyMethodDef gaeadenc_pymethods
[] = {
1379 #define METHNAME(name) gaeemeth_##name
1380 NAMETH(aad
, "ENC.aad() -> AAD")
1381 KWMETH(reinit
, "ENC.reinit(NONCE, [hsz], [msz], [tsz])")
1382 METH (encrypt
, "ENC.encrypt(MSG) -> CT")
1383 KWMETH(done
, "ENC.done([tsz], [aad]) -> CT, TAG")
1388 static PyObject
*gaeaddec_pywrap(PyObject
*cobj
, gaead_dec
*d
, unsigned f
,
1389 size_t hsz
, size_t csz
, size_t tsz
)
1392 assert(cobj
); Py_INCREF(cobj
);
1393 gd
= PyObject_NEW(gaeaddec_pyobj
, (PyTypeObject
*)cobj
);
1394 gd
->d
= d
; gd
->f
= f
; gd
->hsz
= hsz
; gd
->csz
= csz
; gd
->tsz
= tsz
;
1395 gd
->aad
= 0; gd
->clen
= 0;
1396 return ((PyObject
*)gd
);
1399 static void gaeaddec_pydealloc(PyObject
*me
)
1401 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1403 gaea_sever(&gd
->aad
); GAEAD_DESTROY(GAEADDEC_D(me
));
1404 Py_DECREF(Py_TYPE(me
)); FREEOBJ(me
);
1407 static PyObject
*gaedget_hsz(PyObject
*me
, void *hunoz
)
1409 if (GAEADDEC_F(me
)&AEADF_PCHSZ
) return getulong(GAEADDEC_HSZ(me
));
1413 static PyObject
*gaedget_csz(PyObject
*me
, void *hunoz
)
1415 if (GAEADDEC_F(me
)&AEADF_PCMSZ
) return getulong(GAEADDEC_CSZ(me
));
1419 static PyObject
*gaedget_tsz(PyObject
*me
, void *hunoz
)
1421 if (GAEADDEC_F(me
)&AEADF_PCTSZ
) return getulong(GAEADDEC_TSZ(me
));
1425 static PyObject
*gaedget_clen(PyObject
*me
, void *hunoz
)
1426 { return getulong(GAEADDEC_CLEN(me
)); }
1428 static const PyGetSetDef gaeaddec_pygetset
[] = {
1429 #define GETSETNAME(op, name) gaed##op##_##name
1430 GET (hsz
, "DEC.hsz -> precommitted header length or `None'")
1431 GET (csz
, "DEC.csz -> precommitted ciphertext length or `None'")
1432 GET (tsz
, "DEC.tsz -> precommitted tag length or `None'")
1433 GET (clen
, "DEC.clen -> ciphertext length so far")
1438 static PyObject
*gaedmeth_aad(PyObject
*me
)
1440 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1442 if (!(gd
->f
&AEADF_AADNDEP
))
1443 return (gaeadaad_pywrap((PyObject
*)GCAEADDEC_KEY(Py_TYPE(gd
))->aad
,
1444 GAEAD_AAD(gd
->d
), 0, 0));
1447 gd
->aad
= (gaeadaad_pyobj
*)
1448 gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(Py_TYPE(gd
))->aad
,
1449 GAEAD_AAD(gd
->d
), gd
->f
&(AEADF_PCHSZ
| AEADF_NOAAD
),
1452 return ((PyObject
*)gd
->aad
);
1456 static PyObject
*gaedmeth_reinit(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1458 static const char *const kwlist
[] = { "nonce", "hsz", "csz", "tsz", 0 };
1459 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1461 PyObject
*hszobj
= Py_None
, *cszobj
= Py_None
, *tszobj
= Py_None
;
1462 size_t hsz
= 0, csz
= 0, tsz
= 0;
1465 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&|OOO:enc", KWLIST
,
1466 convbin
, &n
, &hszobj
, &cszobj
, &tszobj
))
1468 if (check_aead_encdec(gd
->d
->ops
->c
, &f
, n
.sz
,
1469 hszobj
, &hsz
, cszobj
, &csz
, tszobj
, &tsz
))
1471 if (GAEAD_REINIT(gd
->d
, n
.p
, n
.sz
, hsz
, csz
, tsz
))
1472 VALERR("bad aead parameter combination");
1473 gaea_sever(&gd
->aad
);
1474 gd
->f
= f
; gd
->hsz
= hsz
; gd
->csz
= csz
; gd
->tsz
= tsz
;
1479 static PyObject
*gaedmeth_decrypt(PyObject
*me
, PyObject
*arg
)
1481 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1483 char *m
= 0; size_t msz
; buf b
;
1487 if (!PyArg_ParseTuple(arg
, "O&:decrypt", convbin
, &c
)) goto end
;
1488 if (gd
->f
&AEADF_AADFIRST
) {
1489 if ((gd
->f
&AEADF_PCHSZ
) && (gd
->aad ? gd
->aad
->hlen
: 0) != gd
->hsz
)
1490 VALERR("header doesn't match precommitted length");
1491 gaea_invalidate(gd
->aad
);
1493 if ((gd
->f
&AEADF_PCMSZ
) && c
.sz
> gd
->csz
- gd
->clen
)
1494 VALERR("too large for precommitted message length");
1495 msz
= c
.sz
+ gd
->d
->ops
->c
->bufsz
; m
= xmalloc(msz
); buf_init(&b
, m
, msz
);
1496 err
= GAEAD_DECRYPT(gd
->d
, c
.p
, c
.sz
, &b
); assert(!err
); (void)err
;
1497 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
); gd
->clen
+= c
.sz
;
1503 static PyObject
*gaedmeth_done(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1505 static const char *const kwlist
[] = { "tag", "aad", 0 };
1506 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1507 PyObject
*aad
= Py_None
;
1509 char *m
= 0; size_t msz
; buf b
;
1513 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&|O:done", KWLIST
,
1516 if (aad
!= Py_None
&&
1517 !PyObject_TypeCheck(aad
,
1518 (PyTypeObject
*)GCAEADENC_KEY(Py_TYPE(me
))->aad
))
1519 TYERR("wanted aad");
1520 if ((gd
->f
&AEADF_AADNDEP
) && aad
!= Py_None
&& aad
!= (PyObject
*)gd
->aad
)
1521 VALERR("mismatched aad");
1522 if ((gd
->f
&AEADF_PCHSZ
) &&
1523 (aad
== Py_None ?
0 : GAEADAAD_HLEN(aad
)) != gd
->hsz
)
1524 VALERR("header doesn't match precommitted length");
1525 if ((gd
->f
&AEADF_PCMSZ
) && gd
->clen
!= gd
->csz
)
1526 VALERR("message doesn't match precommitted length");
1527 if ((gd
->f
&AEADF_PCTSZ
) && t
.sz
!= gd
->tsz
)
1528 VALERR("tag length doesn't match precommitted value");
1529 if (keysz(t
.sz
, gd
->d
->ops
->c
->tagsz
) != t
.sz
) VALERR("bad tag length");
1530 msz
= gd
->d
->ops
->c
->bufsz
; m
= xmalloc(msz
); buf_init(&b
, m
, msz
);
1531 err
= GAEAD_DONE(gd
->d
, aad
== Py_None ?
0 : GAEADAAD_A(aad
),
1534 if (!err
) VALERR("decryption failed");
1535 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
);
1541 static const PyMethodDef gaeaddec_pymethods
[] = {
1542 #define METHNAME(name) gaedmeth_##name
1543 NAMETH(aad
, "DEC.aad() -> AAD")
1544 KWMETH(reinit
, "DEC.reinit(NONCE, [hsz], [csz], [tsz])")
1545 METH (decrypt
, "DEC.decrypt(CT) -> MSG")
1546 KWMETH(done
, "DEC.done(TAG, [aad]) -> MSG | None")
1551 static const PyTypeObject gcaead_pytype_skel
= {
1552 PyVarObject_HEAD_INIT(0, 0) /* Header */
1553 "GCAEAD", /* @tp_name@ */
1554 sizeof(gcaead_pyobj
), /* @tp_basicsize@ */
1555 0, /* @tp_itemsize@ */
1557 0, /* @tp_dealloc@ */
1559 0, /* @tp_getattr@ */
1560 0, /* @tp_setattr@ */
1561 0, /* @tp_compare@ */
1563 0, /* @tp_as_number@ */
1564 0, /* @tp_as_sequence@ */
1565 0, /* @tp_as_mapping@ */
1569 0, /* @tp_getattro@ */
1570 0, /* @tp_setattro@ */
1571 0, /* @tp_as_buffer@ */
1572 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1573 Py_TPFLAGS_BASETYPE
,
1576 "Authenticated encryption (key) metaclass.",
1578 0, /* @tp_traverse@ */
1580 0, /* @tp_richcompare@ */
1581 0, /* @tp_weaklistoffset@ */
1583 0, /* @tp_iternext@ */
1584 0, /* @tp_methods@ */
1585 0, /* @tp_members@ */
1586 PYGETSET(gcaead
), /* @tp_getset@ */
1589 0, /* @tp_descr_get@ */
1590 0, /* @tp_descr_set@ */
1591 0, /* @tp_dictoffset@ */
1593 PyType_GenericAlloc
, /* @tp_alloc@ */
1594 abstract_pynew
, /* @tp_new@ */
1599 static const PyTypeObject gaeadkey_pytype_skel
= {
1600 PyVarObject_HEAD_INIT(0, 0) /* Header */
1601 "GAEKey", /* @tp_name@ */
1602 sizeof(gaeadkey_pyobj
), /* @tp_basicsize@ */
1603 0, /* @tp_itemsize@ */
1605 gaeadkey_pydealloc
, /* @tp_dealloc@ */
1607 0, /* @tp_getattr@ */
1608 0, /* @tp_setattr@ */
1609 0, /* @tp_compare@ */
1611 0, /* @tp_as_number@ */
1612 0, /* @tp_as_sequence@ */
1613 0, /* @tp_as_mapping@ */
1617 0, /* @tp_getattro@ */
1618 0, /* @tp_setattro@ */
1619 0, /* @tp_as_buffer@ */
1620 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1621 Py_TPFLAGS_BASETYPE
,
1624 "Authenticated encryption key.",
1626 0, /* @tp_traverse@ */
1628 0, /* @tp_richcompare@ */
1629 0, /* @tp_weaklistoffset@ */
1631 0, /* @tp_iternext@ */
1632 PYMETHODS(gaeadkey
), /* @tp_methods@ */
1633 0, /* @tp_members@ */
1634 0, /* @tp_getset@ */
1637 0, /* @tp_descr_get@ */
1638 0, /* @tp_descr_set@ */
1639 0, /* @tp_dictoffset@ */
1641 PyType_GenericAlloc
, /* @tp_alloc@ */
1642 abstract_pynew
, /* @tp_new@ */
1647 static const PyTypeObject gcaeadaad_pytype_skel
= {
1648 PyVarObject_HEAD_INIT(0, 0) /* Header */
1649 "GAEAADClass", /* @tp_name@ */
1650 sizeof(gcaeadaad_pyobj
), /* @tp_basicsize@ */
1651 0, /* @tp_itemsize@ */
1653 0, /* @tp_dealloc@ */
1655 0, /* @tp_getattr@ */
1656 0, /* @tp_setattr@ */
1657 0, /* @tp_compare@ */
1659 0, /* @tp_as_number@ */
1660 0, /* @tp_as_sequence@ */
1661 0, /* @tp_as_mapping@ */
1665 0, /* @tp_getattro@ */
1666 0, /* @tp_setattro@ */
1667 0, /* @tp_as_buffer@ */
1668 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1669 Py_TPFLAGS_BASETYPE
,
1672 "Authenticated encryption additional-data hash metaclass.",
1674 0, /* @tp_traverse@ */
1676 0, /* @tp_richcompare@ */
1677 0, /* @tp_weaklistoffset@ */
1679 0, /* @tp_iternext@ */
1680 0, /* @tp_methods@ */
1681 0, /* @tp_members@ */
1682 0, /* @tp_getset@ */
1685 0, /* @tp_descr_get@ */
1686 0, /* @tp_descr_set@ */
1687 0, /* @tp_dictoffset@ */
1689 PyType_GenericAlloc
, /* @tp_alloc@ */
1690 abstract_pynew
, /* @tp_new@ */
1695 static const PyTypeObject gaeadaad_pytype_skel
= {
1696 PyVarObject_HEAD_INIT(0, 0) /* Header */
1697 "GAEAAD", /* @tp_name@ */
1698 sizeof(gaeadaad_pyobj
), /* @tp_basicsize@ */
1699 0, /* @tp_itemsize@ */
1701 gaeadaad_pydealloc
, /* @tp_dealloc@ */
1703 0, /* @tp_getattr@ */
1704 0, /* @tp_setattr@ */
1705 0, /* @tp_compare@ */
1707 0, /* @tp_as_number@ */
1708 0, /* @tp_as_sequence@ */
1709 0, /* @tp_as_mapping@ */
1713 0, /* @tp_getattro@ */
1714 0, /* @tp_setattro@ */
1715 0, /* @tp_as_buffer@ */
1716 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1717 Py_TPFLAGS_BASETYPE
,
1720 "Authenticated encryption AAD hash.",
1722 0, /* @tp_traverse@ */
1724 0, /* @tp_richcompare@ */
1725 0, /* @tp_weaklistoffset@ */
1727 0, /* @tp_iternext@ */
1728 PYMETHODS(gaeadaad
), /* @tp_methods@ */
1729 0, /* @tp_members@ */
1730 PYGETSET(gaeadaad
), /* @tp_getset@ */
1733 0, /* @tp_descr_get@ */
1734 0, /* @tp_descr_set@ */
1735 0, /* @tp_dictoffset@ */
1737 PyType_GenericAlloc
, /* @tp_alloc@ */
1738 abstract_pynew
, /* @tp_new@ */
1743 static const PyTypeObject gcaeadenc_pytype_skel
= {
1744 PyVarObject_HEAD_INIT(0, 0) /* Header */
1745 "GAEEncClass", /* @tp_name@ */
1746 sizeof(gcaeadenc_pyobj
), /* @tp_basicsize@ */
1747 0, /* @tp_itemsize@ */
1749 0, /* @tp_dealloc@ */
1751 0, /* @tp_getattr@ */
1752 0, /* @tp_setattr@ */
1753 0, /* @tp_compare@ */
1755 0, /* @tp_as_number@ */
1756 0, /* @tp_as_sequence@ */
1757 0, /* @tp_as_mapping@ */
1761 0, /* @tp_getattro@ */
1762 0, /* @tp_setattro@ */
1763 0, /* @tp_as_buffer@ */
1764 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1765 Py_TPFLAGS_BASETYPE
,
1768 "Authenticated encryption operation metaclass.",
1770 0, /* @tp_traverse@ */
1772 0, /* @tp_richcompare@ */
1773 0, /* @tp_weaklistoffset@ */
1775 0, /* @tp_iternext@ */
1776 0, /* @tp_methods@ */
1777 0, /* @tp_members@ */
1778 0, /* @tp_getset@ */
1781 0, /* @tp_descr_get@ */
1782 0, /* @tp_descr_set@ */
1783 0, /* @tp_dictoffset@ */
1785 PyType_GenericAlloc
, /* @tp_alloc@ */
1786 abstract_pynew
, /* @tp_new@ */
1791 static const PyTypeObject gaeadenc_pytype_skel
= {
1792 PyVarObject_HEAD_INIT(0, 0) /* Header */
1793 "GAEEnc", /* @tp_name@ */
1794 sizeof(gaeadenc_pyobj
), /* @tp_basicsize@ */
1795 0, /* @tp_itemsize@ */
1797 gaeadenc_pydealloc
, /* @tp_dealloc@ */
1799 0, /* @tp_getattr@ */
1800 0, /* @tp_setattr@ */
1801 0, /* @tp_compare@ */
1803 0, /* @tp_as_number@ */
1804 0, /* @tp_as_sequence@ */
1805 0, /* @tp_as_mapping@ */
1809 0, /* @tp_getattro@ */
1810 0, /* @tp_setattro@ */
1811 0, /* @tp_as_buffer@ */
1812 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1813 Py_TPFLAGS_BASETYPE
,
1816 "Authenticated encryption operation.",
1818 0, /* @tp_traverse@ */
1820 0, /* @tp_richcompare@ */
1821 0, /* @tp_weaklistoffset@ */
1823 0, /* @tp_iternext@ */
1824 PYMETHODS(gaeadenc
), /* @tp_methods@ */
1825 0, /* @tp_members@ */
1826 PYGETSET(gaeadenc
), /* @tp_getset@ */
1829 0, /* @tp_descr_get@ */
1830 0, /* @tp_descr_set@ */
1831 0, /* @tp_dictoffset@ */
1833 PyType_GenericAlloc
, /* @tp_alloc@ */
1834 abstract_pynew
, /* @tp_new@ */
1839 static const PyTypeObject gcaeaddec_pytype_skel
= {
1840 PyVarObject_HEAD_INIT(0, 0) /* Header */
1841 "GAEDecClass", /* @tp_name@ */
1842 sizeof(gcaeaddec_pyobj
), /* @tp_basicsize@ */
1843 0, /* @tp_itemsize@ */
1845 0, /* @tp_dealloc@ */
1847 0, /* @tp_getattr@ */
1848 0, /* @tp_setattr@ */
1849 0, /* @tp_compare@ */
1851 0, /* @tp_as_number@ */
1852 0, /* @tp_as_sequence@ */
1853 0, /* @tp_as_mapping@ */
1857 0, /* @tp_getattro@ */
1858 0, /* @tp_setattro@ */
1859 0, /* @tp_as_buffer@ */
1860 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1861 Py_TPFLAGS_BASETYPE
,
1864 "Authenticated decryption operation metaclass.",
1866 0, /* @tp_traverse@ */
1868 0, /* @tp_richcompare@ */
1869 0, /* @tp_weaklistoffset@ */
1871 0, /* @tp_iternext@ */
1872 0, /* @tp_methods@ */
1873 0, /* @tp_members@ */
1874 0, /* @tp_getset@ */
1877 0, /* @tp_descr_get@ */
1878 0, /* @tp_descr_set@ */
1879 0, /* @tp_dictoffset@ */
1881 PyType_GenericAlloc
, /* @tp_alloc@ */
1882 abstract_pynew
, /* @tp_new@ */
1887 static const PyTypeObject gaeaddec_pytype_skel
= {
1888 PyVarObject_HEAD_INIT(0, 0) /* Header */
1889 "GAEDec", /* @tp_name@ */
1890 sizeof(gaeaddec_pyobj
), /* @tp_basicsize@ */
1891 0, /* @tp_itemsize@ */
1893 gaeaddec_pydealloc
, /* @tp_dealloc@ */
1895 0, /* @tp_getattr@ */
1896 0, /* @tp_setattr@ */
1897 0, /* @tp_compare@ */
1899 0, /* @tp_as_number@ */
1900 0, /* @tp_as_sequence@ */
1901 0, /* @tp_as_mapping@ */
1905 0, /* @tp_getattro@ */
1906 0, /* @tp_setattro@ */
1907 0, /* @tp_as_buffer@ */
1908 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1909 Py_TPFLAGS_BASETYPE
,
1912 "Authenticated decryption operation.",
1914 0, /* @tp_traverse@ */
1916 0, /* @tp_richcompare@ */
1917 0, /* @tp_weaklistoffset@ */
1919 0, /* @tp_iternext@ */
1920 PYMETHODS(gaeaddec
), /* @tp_methods@ */
1921 0, /* @tp_members@ */
1922 PYGETSET(gaeaddec
), /* @tp_getset@ */
1925 0, /* @tp_descr_get@ */
1926 0, /* @tp_descr_set@ */
1927 0, /* @tp_dictoffset@ */
1929 PyType_GenericAlloc
, /* @tp_alloc@ */
1930 abstract_pynew
, /* @tp_new@ */
1935 /*----- Hash functions ----------------------------------------------------*/
1937 PyTypeObject
*gchash_pytype
;
1938 static PyTypeObject
*ghash_pytype
;
1939 PyObject
*sha_pyobj
, *has160_pyobj
;
1941 typedef struct ghash_pyobj
{
1946 #define GHASH_PYCHECK(o) PyObject_TypeCheck((o), ghash_pytype)
1947 #define GHASH_H(o) (((ghash_pyobj *)(o))->h)
1949 CONVFUNC(gchash
, gchash
*, GCHASH_CH
)
1950 CONVFUNC(ghash
, ghash
*, GHASH_H
)
1952 static PyObject
*ghash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
1954 static const char *const kwlist
[] = { 0 };
1955 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", KWLIST
))
1957 return (ghash_pywrap((PyObject
*)ty
, GH_INIT(GCHASH_CH(ty
))));
1962 static PyObject
*gchash_pywrap(gchash
*ch
)
1964 gchash_pyobj
*g
= newtype(gchash_pytype
, 0, ch
->name
);
1966 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
1967 g
->ty
.ht_type
.tp_base
= ghash_pytype
;
1968 Py_INCREF(ghash_pytype
);
1969 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
1970 Py_TPFLAGS_BASETYPE
|
1971 Py_TPFLAGS_HEAPTYPE
);
1972 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
1973 g
->ty
.ht_type
.tp_free
= 0;
1974 g
->ty
.ht_type
.tp_new
= ghash_pynew
;
1975 typeready(&g
->ty
.ht_type
);
1976 return ((PyObject
*)g
);
1979 PyObject
*ghash_pywrap(PyObject
*cobj
, ghash
*h
)
1982 if (!cobj
) cobj
= gchash_pywrap((/*unconst*/ gchash
*)GH_CLASS(h
));
1983 else Py_INCREF(cobj
);
1984 g
= PyObject_NEW(ghash_pyobj
, (PyTypeObject
*)cobj
);
1986 return ((PyObject
*)g
);
1989 static void ghash_pydealloc(PyObject
*me
)
1991 GH_DESTROY(GHASH_H(me
));
1992 Py_DECREF(Py_TYPE(me
));
1996 static PyObject
*gchget_name(PyObject
*me
, void *hunoz
)
1997 { return (TEXT_FROMSTR(GCHASH_CH(me
)->name
)); }
1999 static PyObject
*gchget_hashsz(PyObject
*me
, void *hunoz
)
2000 { return (PyInt_FromLong(GCHASH_CH(me
)->hashsz
)); }
2002 static PyObject
*gchget_bufsz(PyObject
*me
, void *hunoz
)
2003 { return (PyInt_FromLong(GCHASH_CH(me
)->bufsz
)); }
2005 static PyObject
*ghmeth_copy(PyObject
*me
)
2006 { return (ghash_pywrap((PyObject
*)Py_TYPE(me
), GH_COPY(GHASH_H(me
)))); }
2008 static PyObject
*ghmeth_hash(PyObject
*me
, PyObject
*arg
)
2011 if (!PyArg_ParseTuple(arg
, "O&:hash", convbin
, &m
)) return (0);
2012 GH_HASH(GHASH_H(me
), m
.p
, m
.sz
);
2016 #define GHMETH_HASHU_(n, W, w) \
2017 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
2020 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
2021 GH_HASHU##W(GHASH_H(me), x); \
2024 DOUINTCONV(GHMETH_HASHU_
)
2026 #define GHMETH_HASHBUF_(n, W, w) \
2027 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
2030 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
2031 if (in.sz > MASK##n) TYERR("string too long"); \
2032 GH_HASHBUF##W(GHASH_H(me), in.p, in.sz); \
2037 DOUINTCONV(GHMETH_HASHBUF_
)
2039 static PyObject
*ghmeth_hashstrz(PyObject
*me
, PyObject
*arg
)
2042 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
2043 GH_HASHSTRZ(GHASH_H(me
), p
);
2047 static PyObject
*ghmeth_done(PyObject
*me
)
2051 g
= GH_COPY(GHASH_H(me
));
2052 rc
= bytestring_pywrap(0, g
->ops
->c
->hashsz
);
2053 GH_DONE(g
, BIN_PTR(rc
));
2058 static const PyGetSetDef gchash_pygetset
[] = {
2059 #define GETSETNAME(op, name) gch##op##_##name
2060 GET (bufsz
, "CH.bufsz -> hash buffer size, or zero")
2061 GET (hashsz
, "CH.hashsz -> hash output size")
2062 GET (name
, "CH.name -> name of this kind of hash")
2067 static const PyMethodDef ghash_pymethods
[] = {
2068 #define METHNAME(name) ghmeth_##name
2069 NAMETH(copy
, "H.copy() -> HH")
2070 METH (hash
, "H.hash(M)")
2071 #define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
2074 #define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
2075 DOUINTCONV(METHBUF_
)
2077 METH (hashstrz
, "H.hashstrz(STRING)")
2078 NAMETH(done
, "H.done() -> HASH")
2083 static const PyTypeObject gchash_pytype_skel
= {
2084 PyVarObject_HEAD_INIT(0, 0) /* Header */
2085 "GCHash", /* @tp_name@ */
2086 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
2087 0, /* @tp_itemsize@ */
2089 0, /* @tp_dealloc@ */
2091 0, /* @tp_getattr@ */
2092 0, /* @tp_setattr@ */
2093 0, /* @tp_compare@ */
2095 0, /* @tp_as_number@ */
2096 0, /* @tp_as_sequence@ */
2097 0, /* @tp_as_mapping@ */
2101 0, /* @tp_getattro@ */
2102 0, /* @tp_setattro@ */
2103 0, /* @tp_as_buffer@ */
2104 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2105 Py_TPFLAGS_BASETYPE
,
2108 "Hash function metaclass.",
2110 0, /* @tp_traverse@ */
2112 0, /* @tp_richcompare@ */
2113 0, /* @tp_weaklistoffset@ */
2115 0, /* @tp_iternext@ */
2116 0, /* @tp_methods@ */
2117 0, /* @tp_members@ */
2118 PYGETSET(gchash
), /* @tp_getset@ */
2121 0, /* @tp_descr_get@ */
2122 0, /* @tp_descr_set@ */
2123 0, /* @tp_dictoffset@ */
2125 PyType_GenericAlloc
, /* @tp_alloc@ */
2126 abstract_pynew
, /* @tp_new@ */
2131 static const PyTypeObject ghash_pytype_skel
= {
2132 PyVarObject_HEAD_INIT(0, 0) /* Header */
2133 "GHash", /* @tp_name@ */
2134 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
2135 0, /* @tp_itemsize@ */
2137 ghash_pydealloc
, /* @tp_dealloc@ */
2139 0, /* @tp_getattr@ */
2140 0, /* @tp_setattr@ */
2141 0, /* @tp_compare@ */
2143 0, /* @tp_as_number@ */
2144 0, /* @tp_as_sequence@ */
2145 0, /* @tp_as_mapping@ */
2149 0, /* @tp_getattro@ */
2150 0, /* @tp_setattro@ */
2151 0, /* @tp_as_buffer@ */
2152 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2153 Py_TPFLAGS_BASETYPE
,
2156 "Hash function, abstract base class.",
2158 0, /* @tp_traverse@ */
2160 0, /* @tp_richcompare@ */
2161 0, /* @tp_weaklistoffset@ */
2163 0, /* @tp_iternext@ */
2164 PYMETHODS(ghash
), /* @tp_methods@ */
2165 0, /* @tp_members@ */
2166 0, /* @tp_getset@ */
2169 0, /* @tp_descr_get@ */
2170 0, /* @tp_descr_set@ */
2171 0, /* @tp_dictoffset@ */
2173 PyType_GenericAlloc
, /* @tp_alloc@ */
2174 abstract_pynew
, /* @tp_new@ */
2179 /*----- Message authentication --------------------------------------------*/
2181 static PyTypeObject
*gcmac_pytype
, *gmac_pytype
, *gmhash_pytype
;
2183 typedef struct gcmac_pyobj
{
2184 PyHeapTypeObject ty
;
2188 #define GCMAC_PYCHECK(o) PyObject_TypeCheck((o), gcmac_pytype)
2189 #define GCMAC_CM(o) (((gcmac_pyobj *)(o))->cm)
2190 #define GCMAC_F(o) (((gcmac_pyobj *)(o))->f)
2191 CONVFUNC(gcmac
, gcmac
*, GCMAC_CM
)
2192 static PyObject
*gmac_pywrap(PyObject
*, gmac
*);
2194 typedef struct gmac_pyobj
{
2195 PyHeapTypeObject ty
;
2199 extern PyTypeObject
*gmac_pytype
;
2200 #define GMAC_PYCHECK(o) PyObject_TypeCheck((o), gmac_pytype)
2201 #define GMAC_M(o) (((gmac_pyobj *)(o))->m)
2202 #define GMAC_F(o) (((gmac_pyobj *)(o))->f)
2203 extern PyObject
*gmac_pywrap(PyObject
*, gmac
*);
2204 extern int convgmac(PyObject
*, void *);
2206 static PyObject
*gmac_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2208 static const char *const kwlist
[] = { "k", 0 };
2211 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&:new", KWLIST
, convbin
, &k
))
2213 if (keysz(k
.sz
, GCMAC_CM(ty
)->keysz
) != k
.sz
) VALERR("bad key length");
2214 return (gmac_pywrap((PyObject
*)ty
,
2215 GM_KEY(GCMAC_CM(ty
), k
.p
, k
.sz
)));
2220 static PyObject
*gmhash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2222 static const char *const kwlist
[] = { 0 };
2225 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", KWLIST
)) return (0);
2226 g
= PyObject_NEW(ghash_pyobj
, ty
);
2227 g
->h
= GM_INIT(GMAC_M(ty
));
2229 return ((PyObject
*)g
);
2232 static PyObject
*gcmac_pywrap(gcmac
*cm
)
2234 gcmac_pyobj
*g
= newtype(gcmac_pytype
, 0, cm
->name
);
2236 g
->ty
.ht_type
.tp_basicsize
= sizeof(gmac_pyobj
);
2237 g
->ty
.ht_type
.tp_base
= gmac_pytype
;
2238 Py_INCREF(gmac_pytype
);
2239 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2240 Py_TPFLAGS_BASETYPE
|
2241 Py_TPFLAGS_HEAPTYPE
);
2242 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2243 g
->ty
.ht_type
.tp_free
= 0;
2244 g
->ty
.ht_type
.tp_new
= gmac_pynew
;
2245 typeready(&g
->ty
.ht_type
);
2246 return ((PyObject
*)g
);
2249 static PyObject
*gmac_pywrap(PyObject
*cobj
, gmac
*m
)
2252 if (!cobj
) cobj
= gcmac_pywrap((/*unconst*/ gcmac
*)GM_CLASS(m
));
2253 else Py_INCREF(cobj
);
2254 g
= newtype((PyTypeObject
*)cobj
, 0, 0);
2255 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
2256 g
->ty
.ht_name
= TEXT_FORMAT("%s(keyed)", m
->ops
->c
->name
);
2257 g
->ty
.ht_type
.tp_name
= TEXT_PTR(g
->ty
.ht_name
);
2258 g
->ty
.ht_type
.tp_base
= gmhash_pytype
;
2259 Py_INCREF(gmac_pytype
);
2260 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2261 Py_TPFLAGS_BASETYPE
|
2262 Py_TPFLAGS_HEAPTYPE
);
2263 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2264 g
->ty
.ht_type
.tp_free
= 0;
2265 g
->ty
.ht_type
.tp_new
= gmhash_pynew
;
2266 typeready(&g
->ty
.ht_type
);
2268 return ((PyObject
*)g
);
2271 static void gmac_pydealloc(PyObject
*me
)
2273 GM_DESTROY(GMAC_M(me
));
2274 Py_DECREF(Py_TYPE(me
));
2275 PyType_Type
.tp_dealloc(me
);
2278 static PyObject
*gcmget_name(PyObject
*me
, void *hunoz
)
2279 { return (TEXT_FROMSTR(GCMAC_CM(me
)->name
)); }
2281 static PyObject
*gcmget_keysz(PyObject
*me
, void *hunoz
)
2282 { return (keysz_pywrap(GCMAC_CM(me
)->keysz
)); }
2284 static PyObject
*gcmget_tagsz(PyObject
*me
, void *hunoz
)
2285 { return (PyInt_FromLong(GCMAC_CM(me
)->hashsz
)); }
2287 static const PyGetSetDef gcmac_pygetset
[] = {
2288 #define GETSETNAME(op, name) gcm##op##_##name
2289 GET (keysz
, "CM.keysz -> acceptable key sizes")
2290 GET (tagsz
, "CM.tagsz -> MAC output size")
2291 GET (name
, "CM.name -> name of this kind of MAC")
2296 static const PyTypeObject gcmac_pytype_skel
= {
2297 PyVarObject_HEAD_INIT(0, 0) /* Header */
2298 "GCMAC", /* @tp_name@ */
2299 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
2300 0, /* @tp_itemsize@ */
2302 0, /* @tp_dealloc@ */
2304 0, /* @tp_getattr@ */
2305 0, /* @tp_setattr@ */
2306 0, /* @tp_compare@ */
2308 0, /* @tp_as_number@ */
2309 0, /* @tp_as_sequence@ */
2310 0, /* @tp_as_mapping@ */
2314 0, /* @tp_getattro@ */
2315 0, /* @tp_setattro@ */
2316 0, /* @tp_as_buffer@ */
2317 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2318 Py_TPFLAGS_BASETYPE
,
2321 "Message authentication code metametaclass.",
2323 0, /* @tp_traverse@ */
2325 0, /* @tp_richcompare@ */
2326 0, /* @tp_weaklistoffset@ */
2328 0, /* @tp_iternext@ */
2329 0, /* @tp_methods@ */
2330 0, /* @tp_members@ */
2331 PYGETSET(gcmac
), /* @tp_getset@ */
2334 0, /* @tp_descr_get@ */
2335 0, /* @tp_descr_set@ */
2336 0, /* @tp_dictoffset@ */
2338 PyType_GenericAlloc
, /* @tp_alloc@ */
2339 abstract_pynew
, /* @tp_new@ */
2344 static const PyTypeObject gmac_pytype_skel
= {
2345 PyVarObject_HEAD_INIT(0, 0) /* Header */
2346 "GMAC", /* @tp_name@ */
2347 sizeof(gmac_pyobj
), /* @tp_basicsize@ */
2348 0, /* @tp_itemsize@ */
2350 gmac_pydealloc
, /* @tp_dealloc@ */
2352 0, /* @tp_getattr@ */
2353 0, /* @tp_setattr@ */
2354 0, /* @tp_compare@ */
2356 0, /* @tp_as_number@ */
2357 0, /* @tp_as_sequence@ */
2358 0, /* @tp_as_mapping@ */
2362 0, /* @tp_getattro@ */
2363 0, /* @tp_setattro@ */
2364 0, /* @tp_as_buffer@ */
2365 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2366 Py_TPFLAGS_BASETYPE
,
2369 "Message authentication code metaclass, abstract base class.",
2371 0, /* @tp_traverse@ */
2373 0, /* @tp_richcompare@ */
2374 0, /* @tp_weaklistoffset@ */
2376 0, /* @tp_iternext@ */
2377 0, /* @tp_methods@ */
2378 0, /* @tp_members@ */
2379 0, /* @tp_getset@ */
2382 0, /* @tp_descr_get@ */
2383 0, /* @tp_descr_set@ */
2384 0, /* @tp_dictoffset@ */
2386 PyType_GenericAlloc
, /* @tp_alloc@ */
2387 abstract_pynew
, /* @tp_new@ */
2392 static const PyTypeObject gmhash_pytype_skel
= {
2393 PyVarObject_HEAD_INIT(0, 0) /* Header */
2394 "GMACHash", /* @tp_name@ */
2395 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
2396 0, /* @tp_itemsize@ */
2398 ghash_pydealloc
, /* @tp_dealloc@ */
2400 0, /* @tp_getattr@ */
2401 0, /* @tp_setattr@ */
2402 0, /* @tp_compare@ */
2404 0, /* @tp_as_number@ */
2405 0, /* @tp_as_sequence@ */
2406 0, /* @tp_as_mapping@ */
2410 0, /* @tp_getattro@ */
2411 0, /* @tp_setattro@ */
2412 0, /* @tp_as_buffer@ */
2413 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2414 Py_TPFLAGS_BASETYPE
,
2417 "Message authentication code, abstract base class.",
2419 0, /* @tp_traverse@ */
2421 0, /* @tp_richcompare@ */
2422 0, /* @tp_weaklistoffset@ */
2424 0, /* @tp_iternext@ */
2425 0, /* @tp_methods@ */
2426 0, /* @tp_members@ */
2427 0, /* @tp_getset@ */
2430 0, /* @tp_descr_get@ */
2431 0, /* @tp_descr_set@ */
2432 0, /* @tp_dictoffset@ */
2434 PyType_GenericAlloc
, /* @tp_alloc@ */
2435 abstract_pynew
, /* @tp_new@ */
2440 /*----- Special snowflake for Poly1305 ------------------------------------*/
2442 PyTypeObject
*poly1305cls_pytype
, *poly1305key_pytype
, *poly1305hash_pytype
;
2444 typedef struct poly1305key_pyobj
{
2445 PyHeapTypeObject ty
;
2447 } poly1305key_pyobj
;
2449 typedef struct poly1305hash_pyobj
{
2454 } poly1305hash_pyobj
;
2456 #define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
2457 #define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
2458 CONVFUNC(poly1305hash
, poly1305_ctx
*, P1305_CTX
)
2460 static PyObject
*poly1305hash_pynew(PyTypeObject
*ty
,
2461 PyObject
*arg
, PyObject
*kw
)
2463 static const char *const kwlist
[] = { "mask", 0 };
2464 poly1305key_pyobj
*pk
= (poly1305key_pyobj
*)ty
;
2465 poly1305hash_pyobj
*ph
;
2466 struct bin m
= { 0, 0 };
2468 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:new", KWLIST
, convbin
, &m
))
2470 if (m
.p
&& m
.sz
!= POLY1305_MASKSZ
) VALERR("bad mask length");
2471 ph
= PyObject_NEW(poly1305hash_pyobj
, ty
);
2473 if (m
.p
) ph
->f
|= f_mask
;
2474 poly1305_macinit(&ph
->ctx
, &pk
->k
, m
.p
);
2476 return ((PyObject
*)ph
);
2481 static PyObject
*poly1305key_pynew(PyTypeObject
*ty
,
2482 PyObject
*arg
, PyObject
*kw
)
2484 static const char *const kwlist
[] = { "k", 0 };
2485 poly1305key_pyobj
*pk
;
2488 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&:new", KWLIST
, convbin
, &k
))
2490 if (keysz(k
.sz
, poly1305_keysz
) != k
.sz
) VALERR("bad key length");
2492 pk
= newtype(ty
, 0, 0);
2493 pk
->ty
.ht_name
= TEXT_FROMSTR("poly1305(keyed)");
2494 pk
->ty
.ht_type
.tp_basicsize
= sizeof(poly1305hash_pyobj
);
2495 pk
->ty
.ht_type
.tp_name
= TEXT_PTR(pk
->ty
.ht_name
);
2496 pk
->ty
.ht_type
.tp_base
= poly1305hash_pytype
;
2497 Py_INCREF(poly1305key_pytype
);
2498 pk
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2499 Py_TPFLAGS_BASETYPE
|
2500 Py_TPFLAGS_HEAPTYPE
);
2501 pk
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2502 pk
->ty
.ht_type
.tp_free
= 0;
2503 pk
->ty
.ht_type
.tp_new
= poly1305hash_pynew
;
2504 typeready(&pk
->ty
.ht_type
);
2506 poly1305_keyinit(&pk
->k
, k
.p
, k
.sz
);
2507 return ((PyObject
*)pk
);
2513 static PyObject
*poly1305clsget_name(PyObject
*me
, void *hunoz
)
2514 { return (TEXT_FROMSTR("poly1305")); }
2516 static PyObject
*poly1305clsget_keysz(PyObject
*me
, void *hunoz
)
2517 { return (keysz_pywrap(poly1305_keysz
)); }
2519 static PyObject
*poly1305clsget_masksz(PyObject
*me
, void *hunoz
)
2520 { return (PyInt_FromLong(POLY1305_MASKSZ
)); }
2522 static PyObject
*poly1305clsget_tagsz(PyObject
*me
, void *hunoz
)
2523 { return (PyInt_FromLong(POLY1305_TAGSZ
)); }
2525 static PyObject
*polymeth_copy(PyObject
*me
)
2527 poly1305hash_pyobj
*ph
;
2528 ph
= PyObject_NEW(poly1305hash_pyobj
, Py_TYPE(me
));
2529 poly1305_copy(&ph
->ctx
, P1305_CTX(me
));
2530 Py_INCREF(Py_TYPE(me
));
2531 return ((PyObject
*)ph
);
2534 static PyObject
*polymeth_hash(PyObject
*me
, PyObject
*arg
)
2537 if (!PyArg_ParseTuple(arg
, "O&:hash", convbin
, &m
)) return (0);
2538 poly1305_hash(P1305_CTX(me
), m
.p
, m
.sz
);
2542 #define POLYMETH_HASHU_(n, W, w) \
2543 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
2547 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
2548 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2551 DOUINTCONV(POLYMETH_HASHU_
)
2553 #define POLYMETH_HASHBUF_(n, W, w) \
2554 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
2558 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
2559 if (in.sz > MASK##n) TYERR("string too long"); \
2560 STORE##W(b, in.sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2561 poly1305_hash(P1305_CTX(me), in.p, in.sz); \
2566 DOUINTCONV(POLYMETH_HASHBUF_
)
2568 static PyObject
*polymeth_hashstrz(PyObject
*me
, PyObject
*arg
)
2571 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
2572 poly1305_hash(P1305_CTX(me
), p
, strlen(p
) + 1);
2576 static PyObject
*polymeth_flush(PyObject
*me
)
2577 { poly1305_flush(P1305_CTX(me
)); RETURN_ME
; }
2579 static PyObject
*polymeth_flushzero(PyObject
*me
)
2580 { poly1305_flushzero(P1305_CTX(me
)); RETURN_ME
; }
2582 static PyObject
*polymeth_concat(PyObject
*me
, PyObject
*arg
)
2584 PyObject
*pre
, *suff
;
2585 if (!PyArg_ParseTuple(arg
, "OO:concat", &pre
, &suff
)) return (0);
2586 if (!PyObject_TypeCheck(pre
, poly1305hash_pytype
) ||
2587 !PyObject_TypeCheck(suff
, poly1305hash_pytype
))
2588 TYERR("wanted a poly1305hash");
2589 if (Py_TYPE(me
) != Py_TYPE(pre
) || Py_TYPE(me
) != Py_TYPE(suff
))
2590 TYERR("key mismatch");
2591 if (P1305_CTX(pre
)->nbuf
) VALERR("prefix is not block-aligned");
2592 poly1305_concat(P1305_CTX(me
), P1305_CTX(pre
), P1305_CTX(suff
));
2598 static PyObject
*polymeth_done(PyObject
*me
)
2601 if (!(P1305_F(me
) & f_mask
)) VALERR("no mask");
2602 rc
= bytestring_pywrap(0, POLY1305_TAGSZ
);
2603 poly1305_done(P1305_CTX(me
), BIN_PTR(rc
));
2609 static const PyGetSetDef poly1305cls_pygetset
[] = {
2610 #define GETSETNAME(op, name) poly1305cls##op##_##name
2611 GET (keysz
, "PC.keysz -> acceptable key sizes")
2612 GET (masksz
, "PC.masksz -> mask size")
2613 GET (tagsz
, "PC.tagsz -> MAC output size")
2614 GET (name
, "PC.name -> name of this kind of MAC")
2619 static const PyMethodDef poly1305hash_pymethods
[] = {
2620 #define METHNAME(name) polymeth_##name
2621 NAMETH(copy
, "P.copy() -> PP")
2622 METH (hash
, "P.hash(M)")
2623 #define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
2626 #define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
2627 DOUINTCONV(METHBUF_
)
2629 METH (hashstrz
, "P.hashstrz(STRING)")
2630 NAMETH(flush
, "P.flush()")
2631 NAMETH(flushzero
, "P.flushzero()")
2632 METH (concat
, "P.concat(PREFIX, SUFFIX)")
2633 NAMETH(done
, "P.done() -> TAG")
2638 static const PyTypeObject poly1305cls_pytype_skel
= {
2639 PyVarObject_HEAD_INIT(0, 0) /* Header */
2640 "Poly1305Class", /* @tp_name@ */
2641 sizeof(PyHeapTypeObject
), /* @tp_basicsize@ */
2642 0, /* @tp_itemsize@ */
2644 0, /* @tp_dealloc@ */
2646 0, /* @tp_getattr@ */
2647 0, /* @tp_setattr@ */
2648 0, /* @tp_compare@ */
2650 0, /* @tp_as_number@ */
2651 0, /* @tp_as_sequence@ */
2652 0, /* @tp_as_mapping@ */
2656 0, /* @tp_getattro@ */
2657 0, /* @tp_setattro@ */
2658 0, /* @tp_as_buffer@ */
2659 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2660 Py_TPFLAGS_BASETYPE
,
2663 "Poly1305 metametaclass. Best not to ask.",
2665 0, /* @tp_traverse@ */
2667 0, /* @tp_richcompare@ */
2668 0, /* @tp_weaklistoffset@ */
2670 0, /* @tp_iternext@ */
2671 0, /* @tp_methods@ */
2672 0, /* @tp_members@ */
2673 PYGETSET(poly1305cls
), /* @tp_getset@ */
2676 0, /* @tp_descr_get@ */
2677 0, /* @tp_descr_set@ */
2678 0, /* @tp_dictoffset@ */
2680 PyType_GenericAlloc
, /* @tp_alloc@ */
2681 abstract_pynew
, /* @tp_new@ */
2686 static const PyTypeObject poly1305key_pytype_skel
= {
2687 PyVarObject_HEAD_INIT(0, 0) /* Header */
2688 "poly1305", /* @tp_name@ */
2689 sizeof(poly1305key_pyobj
), /* @tp_basicsize@ */
2690 0, /* @tp_itemsize@ */
2692 0, /* @tp_dealloc@ */
2694 0, /* @tp_getattr@ */
2695 0, /* @tp_setattr@ */
2696 0, /* @tp_compare@ */
2698 0, /* @tp_as_number@ */
2699 0, /* @tp_as_sequence@ */
2700 0, /* @tp_as_mapping@ */
2704 0, /* @tp_getattro@ */
2705 0, /* @tp_setattro@ */
2706 0, /* @tp_as_buffer@ */
2707 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2708 Py_TPFLAGS_BASETYPE
,
2711 "poly1305(K): Poly1305 key.",
2713 0, /* @tp_traverse@ */
2715 0, /* @tp_richcompare@ */
2716 0, /* @tp_weaklistoffset@ */
2718 0, /* @tp_iternext@ */
2719 0, /* @tp_methods@ */
2720 0, /* @tp_members@ */
2721 0, /* @tp_getset@ */
2724 0, /* @tp_descr_get@ */
2725 0, /* @tp_descr_set@ */
2726 0, /* @tp_dictoffset@ */
2728 PyType_GenericAlloc
, /* @tp_alloc@ */
2729 poly1305key_pynew
, /* @tp_new@ */
2734 static const PyTypeObject poly1305hash_pytype_skel
= {
2735 PyVarObject_HEAD_INIT(0, 0) /* Header */
2736 "Poly1305Hash", /* @tp_name@ */
2737 sizeof(poly1305hash_pyobj
), /* @tp_basicsize@ */
2738 0, /* @tp_itemsize@ */
2740 0, /* @tp_dealloc@ */
2742 0, /* @tp_getattr@ */
2743 0, /* @tp_setattr@ */
2744 0, /* @tp_compare@ */
2746 0, /* @tp_as_number@ */
2747 0, /* @tp_as_sequence@ */
2748 0, /* @tp_as_mapping@ */
2752 0, /* @tp_getattro@ */
2753 0, /* @tp_setattro@ */
2754 0, /* @tp_as_buffer@ */
2755 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2756 Py_TPFLAGS_BASETYPE
,
2759 "Poly1305 MAC context base class.",
2761 0, /* @tp_traverse@ */
2763 0, /* @tp_richcompare@ */
2764 0, /* @tp_weaklistoffset@ */
2766 0, /* @tp_iternext@ */
2767 PYMETHODS(poly1305hash
), /* @tp_methods@ */
2768 0, /* @tp_members@ */
2769 0, /* @tp_getset@ */
2772 0, /* @tp_descr_get@ */
2773 0, /* @tp_descr_set@ */
2774 0, /* @tp_dictoffset@ */
2776 PyType_GenericAlloc
, /* @tp_alloc@ */
2777 abstract_pynew
, /* @tp_new@ */
2782 /*----- Special snowflake for HSalsa and HChaCha --------------------------*/
2784 #define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
2785 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
2787 dance##_ctx dance; \
2790 if (!PyArg_ParseTuple(arg, "O&O&:" #hdance "_prf", \
2791 convbin, &k, convbin, &n)) \
2793 if (k.sz != keysz(k.sz, dance##_keysz)) VALERR("bad key length"); \
2794 if (n.sz != HDANCE##_INSZ) VALERR("bad input length"); \
2795 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
2796 dance##_init(&dance, k.p, k.sz, 0); \
2797 hdance##_prf(&dance, n.p, BIN_PTR(rc)); \
2803 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa20
)
2804 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa2012
)
2805 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa208
)
2807 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha20
)
2808 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha12
)
2809 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha8
)
2811 /*----- Keccak-p[1600, n] -------------------------------------------------*/
2813 static PyTypeObject
*kxvik_pytype
;
2815 typedef struct kxvik_pyobj
{
2821 static PyObject
*kxvik_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2824 kxvik_pyobj
*rc
= 0;
2825 static const char *const kwlist
[] = { "nround", 0 };
2826 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:new", KWLIST
,
2829 rc
= (kxvik_pyobj
*)ty
->tp_alloc(ty
, 0);
2831 keccak1600_init(&rc
->s
);
2833 return ((PyObject
*)rc
);
2836 static PyObject
*kxvikmeth_copy(PyObject
*me
)
2838 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
, *rc
= 0;
2839 rc
= (kxvik_pyobj
*)Py_TYPE(k
)->tp_alloc(Py_TYPE(k
), 0);
2840 rc
->s
= k
->s
; rc
->n
= k
->n
;
2841 return ((PyObject
*)rc
);
2844 static PyObject
*kxvikmeth_mix(PyObject
*me
, PyObject
*arg
)
2846 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2854 if (!PyArg_ParseTuple(arg
, "O&:mix", convbin
, &in
)) goto end
;
2855 if (in
.sz
> 200) VALERR("out of range");
2856 q
= in
.p
; n
= in
.sz
;
2858 while (n
> 8) { LOAD64_L_(t
[i
], q
); i
++; q
+= 8; n
-= 8; }
2860 memcpy(buf
, q
, n
); memset(buf
+ n
, 0, 8 - n
);
2861 LOAD64_L_(t
[i
], buf
); i
++;
2863 keccak1600_mix(&k
->s
, t
, i
);
2869 static PyObject
*kxvikmeth_extract(PyObject
*me
, PyObject
*arg
)
2871 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2878 if (!PyArg_ParseTuple(arg
, "O&:extract", convuint
, &n
)) goto end
;
2879 if (n
> 200) VALERR("out of range");
2880 rc
= bytestring_pywrap(0, n
);
2881 q
= (octet
*)BIN_PTR(rc
);
2882 keccak1600_extract(&k
->s
, t
, (n
+ 7)/8);
2884 while (n
> 8) { STORE64_L_(q
, t
[i
]); i
++; q
+= 8; n
-= 8; }
2885 if (n
) { STORE64_L_(buf
, t
[i
]); memcpy(q
, buf
, n
); }
2890 static PyObject
*kxvikmeth_step(PyObject
*me
)
2892 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2893 keccak1600_p(&k
->s
, &k
->s
, k
->n
);
2897 static const PyMemberDef kxvik_pymembers
[] = {
2898 #define MEMBERSTRUCT kxvik_pyobj
2899 MEMRNM(nround
, T_UINT
, n
, 0, "KECCAC.nround -> number of rounds")
2904 static const PyMethodDef kxvik_pymethods
[] = {
2905 #define METHNAME(func) kxvikmeth_##func
2906 NAMETH(copy
, "KECCAK.copy() -> KECCAK'")
2907 METH (mix
, "KECCAK.mix(DATA)")
2908 METH (extract
, "KECCAK.extract(NOCTETS)")
2909 NAMETH(step
, "KECCAK.step()")
2914 static const PyTypeObject kxvik_pytype_skel
= {
2915 PyVarObject_HEAD_INIT(0, 0) /* Header */
2916 "Keccak1600", /* @tp_name@ */
2917 sizeof(kxvik_pyobj
), /* @tp_basicsize@ */
2918 0, /* @tp_itemsize@ */
2920 0, /* @tp_dealloc@ */
2922 0, /* @tp_getattr@ */
2923 0, /* @tp_setattr@ */
2924 0, /* @tp_compare@ */
2926 0, /* @tp_as_number@ */
2927 0, /* @tp_as_sequence@ */
2928 0, /* @tp_as_mapping@ */
2932 0, /* @tp_getattro@ */
2933 0, /* @tp_setattro@ */
2934 0, /* @tp_as_buffer@ */
2935 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2936 Py_TPFLAGS_BASETYPE
,
2939 "Keccak1600([nround = 24]): Keccak-p[1600, n] state.",
2941 0, /* @tp_traverse@ */
2943 0, /* @tp_richcompare@ */
2944 0, /* @tp_weaklistoffset@ */
2946 0, /* @tp_iternext@ */
2947 PYMETHODS(kxvik
), /* @tp_methods@ */
2948 PYMEMBERS(kxvik
), /* @tp_members@ */
2949 0, /* @tp_getset@ */
2952 0, /* @tp_descr_get@ */
2953 0, /* @tp_descr_set@ */
2954 0, /* @tp_dictoffset@ */
2956 PyType_GenericAlloc
, /* @tp_alloc@ */
2957 kxvik_pynew
, /* @tp_new@ */
2962 static PyTypeObject
*shake_pytype
, *shake128_pytype
, *shake256_pytype
;
2964 typedef struct shake_pyobj
{
2970 #define SHAKE_H(o) (&((shake_pyobj *)(o))->h)
2971 #define SHAKE_ST(o) (((shake_pyobj *)(o))->st)
2973 static PyObject
*shake_dopynew(void (*initfn
)(shake_ctx
*,
2974 const void *, size_t,
2975 const void *, size_t),
2977 PyObject
*arg
, PyObject
*kw
)
2979 shake_pyobj
*rc
= 0;
2980 struct bin p
= { 0, 0 }, f
= { 0, 0 };
2981 static const char *const kwlist
[] = { "perso", "func", 0 };
2983 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&O&:new", KWLIST
,
2984 convbin
, &p
, convbin
, &f
))
2986 rc
= (shake_pyobj
*)ty
->tp_alloc(ty
, 0);
2987 initfn(&rc
->h
, f
.p
, f
.sz
, p
.p
, p
.sz
);
2990 return ((PyObject
*)rc
);
2993 static PyObject
*shake128_pynew(PyTypeObject
*ty
,
2994 PyObject
*arg
, PyObject
*kw
)
2995 { return (shake_dopynew(cshake128_init
, ty
, arg
, kw
)); }
2997 static PyObject
*shake256_pynew(PyTypeObject
*ty
,
2998 PyObject
*arg
, PyObject
*kw
)
2999 { return (shake_dopynew(cshake256_init
, ty
, arg
, kw
)); }
3001 static int shake_check(PyObject
*me
, int st
)
3003 if (SHAKE_ST(me
) != st
) VALERR("wrong state");
3009 static PyObject
*shakemeth_hash(PyObject
*me
, PyObject
*arg
)
3012 if (!PyArg_ParseTuple(arg
, "O&:hash", convbin
, &m
)) return (0);
3013 if (shake_check(me
, 0)) return (0);
3014 shake_hash(SHAKE_H(me
), m
.p
, m
.sz
);
3018 #define SHAKEMETH_HASHU_(n, W, w) \
3019 static PyObject *shakemeth_hashu##w(PyObject *me, PyObject *arg) \
3023 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
3024 if (shake_check(me, 0)) return (0); \
3025 STORE##W(b, x); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3028 DOUINTCONV(SHAKEMETH_HASHU_
)
3030 #define SHAKEMETH_HASHBUF_(n, W, w) \
3031 static PyObject *shakemeth_hashbuf##w(PyObject *me, PyObject *arg) \
3035 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
3036 if (in.sz > MASK##n) TYERR("string too long"); \
3037 if (shake_check(me, 0)) goto end; \
3038 STORE##W(b, in.sz); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3039 shake_hash(SHAKE_H(me), in.p, in.sz); \
3044 DOUINTCONV(SHAKEMETH_HASHBUF_
)
3046 static PyObject
*shakemeth_hashstrz(PyObject
*me
, PyObject
*arg
)
3049 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
3050 if (shake_check(me
, 0)) return (0);
3051 shake_hash(SHAKE_H(me
), p
, strlen(p
) + 1);
3055 static PyObject
*shakemeth_xof(PyObject
*me
)
3057 if (shake_check(me
, 0)) goto end
;
3058 shake_xof(SHAKE_H(me
));
3065 static PyObject
*shakemeth_done(PyObject
*me
, PyObject
*arg
)
3069 if (!PyArg_ParseTuple(arg
, "O&:done", convszt
, &n
)) goto end
;
3070 if (shake_check(me
, 0)) goto end
;
3071 rc
= bytestring_pywrap(0, n
);
3072 shake_done(SHAKE_H(me
), BIN_PTR(rc
), n
);
3078 static PyObject
*shakemeth_copy(PyObject
*me
)
3080 shake_pyobj
*rc
= 0;
3082 rc
= PyObject_NEW(shake_pyobj
, Py_TYPE(me
));
3083 rc
->h
= *SHAKE_H(me
);
3084 rc
->st
= SHAKE_ST(me
);
3085 return ((PyObject
*)rc
);
3088 static PyObject
*shakemeth_get(PyObject
*me
, PyObject
*arg
)
3093 if (!PyArg_ParseTuple(arg
, "O&:get", convszt
, &sz
)) goto end
;
3094 if (shake_check(me
, 1)) goto end
;
3095 rc
= bytestring_pywrap(0, sz
);
3096 shake_get(SHAKE_H(me
), BIN_PTR(rc
), sz
);
3101 static PyObject
*shakemeth_mask(PyObject
*me
, PyObject
*arg
)
3106 if (!PyArg_ParseTuple(arg
, "O&:mask", convbin
, &in
)) goto end
;
3107 if (shake_check(me
, 1)) goto end
;
3108 rc
= bytestring_pywrap(0, in
.sz
);
3109 shake_mask(SHAKE_H(me
), in
.p
, BIN_PTR(rc
), in
.sz
);
3114 static PyObject
*shakeget_state(PyObject
*me
, void *hunoz
)
3116 int st
= SHAKE_ST(me
);
3117 return (TEXT_FROMSTR(st
== 0 ?
"absorb" :
3118 st
== 1 ?
"squeeze" : "dead"));
3121 static const PyMemberDef shake_pymembers
[] = {
3122 #define MEMBERSTRUCT shake_pyobj
3123 MEMRNM(rate
, T_UINT
, h
.h
.r
, READONLY
, "S.rate -> rate, in bytes")
3124 MEMRNM(buffered
, T_UINT
, h
.h
.n
, READONLY
,
3125 "S.buffered -> amount currently buffered")
3130 static const PyGetSetDef shake_pygetset
[] = {
3131 #define GETSETNAME(op, name) shake##op##_##name
3132 GET (state
, "S.state -> `absorb', `squeeze', `dead'")
3137 static const PyMethodDef shake_pymethods
[] = {
3138 #define METHNAME(func) shakemeth_##func
3139 NAMETH(copy
, "S.copy() -> SS")
3140 METH (hash
, "S.hash(M)")
3141 #define METHU_(n, W, w) METH(hashu##w, "S.hashu" #w "(WORD)")
3144 #define METHBUF_(n, W, w) METH(hashbuf##w, "S.hashbuf" #w "(BYTES)")
3145 DOUINTCONV(METHBUF_
)
3147 METH (hashstrz
, "S.hashstrz(STRING)")
3148 NAMETH(xof
, "S.xof()")
3149 METH (done
, "S.done(LEN) -> H")
3150 METH (get
, "S.get(LEN) -> H")
3151 METH (mask
, "S.mask(M) -> C")
3156 static const PyTypeObject shake_pytype_skel
= {
3157 PyVarObject_HEAD_INIT(0, 0) /* Header */
3158 "Shake", /* @tp_name@ */
3159 sizeof(shake_pyobj
), /* @tp_basicsize@ */
3160 0, /* @tp_itemsize@ */
3162 0, /* @tp_dealloc@ */
3164 0, /* @tp_getattr@ */
3165 0, /* @tp_setattr@ */
3166 0, /* @tp_compare@ */
3168 0, /* @tp_as_number@ */
3169 0, /* @tp_as_sequence@ */
3170 0, /* @tp_as_mapping@ */
3174 0, /* @tp_getattro@ */
3175 0, /* @tp_setattro@ */
3176 0, /* @tp_as_buffer@ */
3177 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3178 Py_TPFLAGS_BASETYPE
,
3181 "SHAKE/cSHAKE/KMAC base class.",
3183 0, /* @tp_traverse@ */
3185 0, /* @tp_richcompare@ */
3186 0, /* @tp_weaklistoffset@ */
3188 0, /* @tp_iternext@ */
3189 PYMETHODS(shake
), /* @tp_methods@ */
3190 PYMEMBERS(shake
), /* @tp_members@ */
3191 PYGETSET(shake
), /* @tp_getset@ */
3194 0, /* @tp_descr_get@ */
3195 0, /* @tp_descr_set@ */
3196 0, /* @tp_dictoffset@ */
3198 PyType_GenericAlloc
, /* @tp_alloc@ */
3199 abstract_pynew
, /* @tp_new@ */
3204 static const PyTypeObject shake128_pytype_skel
= {
3205 PyVarObject_HEAD_INIT(0, 0) /* Header */
3206 "Shake128", /* @tp_name@ */
3207 0, /* @tp_basicsize@ */
3208 0, /* @tp_itemsize@ */
3210 0, /* @tp_dealloc@ */
3212 0, /* @tp_getattr@ */
3213 0, /* @tp_setattr@ */
3214 0, /* @tp_compare@ */
3216 0, /* @tp_as_number@ */
3217 0, /* @tp_as_sequence@ */
3218 0, /* @tp_as_mapping@ */
3222 0, /* @tp_getattro@ */
3223 0, /* @tp_setattro@ */
3224 0, /* @tp_as_buffer@ */
3225 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3226 Py_TPFLAGS_BASETYPE
,
3229 "Shake128([perso = STR], [func = STR]): SHAKE128/cSHAKE128 XOF.",
3231 0, /* @tp_traverse@ */
3233 0, /* @tp_richcompare@ */
3234 0, /* @tp_weaklistoffset@ */
3236 0, /* @tp_iternext@ */
3237 0, /* @tp_methods@ */
3238 0, /* @tp_members@ */
3239 0, /* @tp_getset@ */
3242 0, /* @tp_descr_get@ */
3243 0, /* @tp_descr_set@ */
3244 0, /* @tp_dictoffset@ */
3246 PyType_GenericAlloc
, /* @tp_alloc@ */
3247 shake128_pynew
, /* @tp_new@ */
3252 static const PyTypeObject shake256_pytype_skel
= {
3253 PyVarObject_HEAD_INIT(0, 0) /* Header */
3254 "Shake256", /* @tp_name@ */
3255 0, /* @tp_basicsize@ */
3256 0, /* @tp_itemsize@ */
3258 0, /* @tp_dealloc@ */
3260 0, /* @tp_getattr@ */
3261 0, /* @tp_setattr@ */
3262 0, /* @tp_compare@ */
3264 0, /* @tp_as_number@ */
3265 0, /* @tp_as_sequence@ */
3266 0, /* @tp_as_mapping@ */
3270 0, /* @tp_getattro@ */
3271 0, /* @tp_setattro@ */
3272 0, /* @tp_as_buffer@ */
3273 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3274 Py_TPFLAGS_BASETYPE
,
3277 "Shake256([perso = STR], [func = STR]): SHAKE256/cSHAKE256 XOF.",
3279 0, /* @tp_traverse@ */
3281 0, /* @tp_richcompare@ */
3282 0, /* @tp_weaklistoffset@ */
3284 0, /* @tp_iternext@ */
3285 0, /* @tp_methods@ */
3286 0, /* @tp_members@ */
3287 0, /* @tp_getset@ */
3290 0, /* @tp_descr_get@ */
3291 0, /* @tp_descr_set@ */
3292 0, /* @tp_dictoffset@ */
3294 PyType_GenericAlloc
, /* @tp_alloc@ */
3295 shake256_pynew
, /* @tp_new@ */
3300 /*----- Pseudorandom permutations -----------------------------------------*/
3302 static PyTypeObject
*gcprp_pytype
, *gprp_pytype
;
3304 typedef struct prpinfo
{
3309 void (*init
)(void *, const void *, size_t);
3310 void (*eblk
)(void *, const void *, void *);
3311 void (*dblk
)(void *, const void *, void *);
3314 #define PRP_DEF(PRE, pre) \
3315 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
3316 { pre##_init(ctx, k, ksz); } \
3317 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
3319 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3320 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3322 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
3324 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3325 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3327 static const prpinfo pre##_prpinfo = { \
3328 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
3329 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
3333 static const struct prpinfo
*const gprptab
[] = {
3334 #define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
3339 typedef struct gcprp_pyobj
{
3340 PyHeapTypeObject ty
;
3343 #define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
3345 typedef struct gprp_pyobj
{
3349 #define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
3350 #define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
3352 typedef struct prp
{
3357 static PyObject
*gprp_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
3359 static const char *const kwlist
[] = { "key", 0 };
3361 const prpinfo
*prp
= GCPRP_PRP(ty
);
3364 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O&:new", KWLIST
, convbin
, &k
))
3366 if (keysz(k
.sz
, prp
->keysz
) != k
.sz
) VALERR("bad key length");
3367 me
= (PyObject
*)ty
->tp_alloc(ty
, 0);
3369 prp
->init(GPRP_CTX(me
), k
.p
, k
.sz
);
3376 static void gprp_pydealloc(PyObject
*me
)
3377 { Py_DECREF(Py_TYPE(me
)); FREEOBJ(me
); }
3379 static PyObject
*gcprp_pywrap(const prpinfo
*prp
)
3381 gcprp_pyobj
*g
= newtype(gcprp_pytype
, 0, prp
->name
);
3383 g
->ty
.ht_type
.tp_basicsize
= sizeof(gprp_pyobj
) + prp
->ctxsz
;
3384 g
->ty
.ht_type
.tp_base
= gprp_pytype
;
3385 Py_INCREF(gprp_pytype
);
3386 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
3387 Py_TPFLAGS_BASETYPE
|
3388 Py_TPFLAGS_HEAPTYPE
);
3389 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
3390 g
->ty
.ht_type
.tp_free
= 0;
3391 g
->ty
.ht_type
.tp_new
= gprp_pynew
;
3392 typeready(&g
->ty
.ht_type
);
3393 return ((PyObject
*)g
);
3396 static PyObject
*gcpget_name(PyObject
*me
, void *hunoz
)
3397 { return (TEXT_FROMSTR(GCPRP_PRP(me
)->name
)); }
3398 static PyObject
*gcpget_keysz(PyObject
*me
, void *hunoz
)
3399 { return (keysz_pywrap(GCPRP_PRP(me
)->keysz
)); }
3400 static PyObject
*gcpget_blksz(PyObject
*me
, void *hunoz
)
3401 { return (PyInt_FromLong(GCPRP_PRP(me
)->blksz
)); }
3403 static PyObject
*gpmeth_encrypt(PyObject
*me
, PyObject
*arg
)
3408 if (!PyArg_ParseTuple(arg
, "O&:encrypt", convbin
, &m
)) goto end
;
3409 if (m
.sz
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
3410 rc
= bytestring_pywrap(0, m
.sz
);
3411 GPRP_PRP(me
)->eblk(GPRP_CTX(me
), m
.p
, BIN_PTR(rc
));
3416 static PyObject
*gpmeth_decrypt(PyObject
*me
, PyObject
*arg
)
3421 if (!PyArg_ParseTuple(arg
, "O&:decrypt", convbin
, &c
)) goto end
;
3422 if (c
.sz
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
3423 rc
= bytestring_pywrap(0, c
.sz
);
3424 GPRP_PRP(me
)->dblk(GPRP_CTX(me
), c
.p
, BIN_PTR(rc
));
3429 static const PyGetSetDef gcprp_pygetset
[] = {
3430 #define GETSETNAME(op, name) gcp##op##_##name
3431 GET (keysz
, "CP.keysz -> acceptable key sizes")
3432 GET (blksz
, "CP.blksz -> block size")
3433 GET (name
, "CP.name -> name of this kind of PRP")
3438 static const PyMethodDef gprp_pymethods
[] = {
3439 #define METHNAME(name) gpmeth_##name
3440 METH (encrypt
, "P.encrypt(PT) -> CT")
3441 METH (decrypt
, "P.decrypt(CT) -> PT")
3446 static const PyTypeObject gcprp_pytype_skel
= {
3447 PyVarObject_HEAD_INIT(0, 0) /* Header */
3448 "GCPRP", /* @tp_name@ */
3449 sizeof(gcprp_pyobj
), /* @tp_basicsize@ */
3450 0, /* @tp_itemsize@ */
3452 0, /* @tp_dealloc@ */
3454 0, /* @tp_getattr@ */
3455 0, /* @tp_setattr@ */
3456 0, /* @tp_compare@ */
3458 0, /* @tp_as_number@ */
3459 0, /* @tp_as_sequence@ */
3460 0, /* @tp_as_mapping@ */
3464 0, /* @tp_getattro@ */
3465 0, /* @tp_setattro@ */
3466 0, /* @tp_as_buffer@ */
3467 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3468 Py_TPFLAGS_BASETYPE
,
3471 "Pseudorandom permutation metaclass.",
3473 0, /* @tp_traverse@ */
3475 0, /* @tp_richcompare@ */
3476 0, /* @tp_weaklistoffset@ */
3478 0, /* @tp_iternext@ */
3479 0, /* @tp_methods@ */
3480 0, /* @tp_members@ */
3481 PYGETSET(gcprp
), /* @tp_getset@ */
3484 0, /* @tp_descr_get@ */
3485 0, /* @tp_descr_set@ */
3486 0, /* @tp_dictoffset@ */
3488 PyType_GenericAlloc
, /* @tp_alloc@ */
3489 abstract_pynew
, /* @tp_new@ */
3494 static const PyTypeObject gprp_pytype_skel
= {
3495 PyVarObject_HEAD_INIT(0, 0) /* Header */
3496 "GPRP", /* @tp_name@ */
3497 sizeof(gprp_pyobj
), /* @tp_basicsize@ */
3498 0, /* @tp_itemsize@ */
3500 gprp_pydealloc
, /* @tp_dealloc@ */
3502 0, /* @tp_getattr@ */
3503 0, /* @tp_setattr@ */
3504 0, /* @tp_compare@ */
3506 0, /* @tp_as_number@ */
3507 0, /* @tp_as_sequence@ */
3508 0, /* @tp_as_mapping@ */
3512 0, /* @tp_getattro@ */
3513 0, /* @tp_setattro@ */
3514 0, /* @tp_as_buffer@ */
3515 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3516 Py_TPFLAGS_BASETYPE
,
3519 "Pseudorandom permutation, abstract base class.",
3521 0, /* @tp_traverse@ */
3523 0, /* @tp_richcompare@ */
3524 0, /* @tp_weaklistoffset@ */
3526 0, /* @tp_iternext@ */
3527 PYMETHODS(gprp
), /* @tp_methods@ */
3528 0, /* @tp_members@ */
3529 0, /* @tp_getset@ */
3532 0, /* @tp_descr_get@ */
3533 0, /* @tp_descr_set@ */
3534 0, /* @tp_dictoffset@ */
3536 PyType_GenericAlloc
, /* @tp_alloc@ */
3537 abstract_pynew
, /* @tp_new@ */
3542 /*----- Main code ---------------------------------------------------------*/
3544 static const struct nameval consts
[] = {
3545 CONST(AEADF_PCHSZ
), CONST(AEADF_PCMSZ
), CONST(AEADF_PCTSZ
),
3546 CONST(AEADF_AADNDEP
), CONST(AEADF_AADFIRST
), CONST(AEADF_NOAAD
),
3550 static const PyMethodDef methods
[] = {
3551 #define METHNAME(func) meth_##func
3552 #define METH_HDANCE(hdance, HDance) METH(hdance##_prf, \
3553 "" #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
3554 METH_HDANCE(hsalsa20
, "HSalsa20")
3555 METH_HDANCE(hsalsa2012
, "HSalsa20/12")
3556 METH_HDANCE(hsalsa208
, "HSalsa20/8")
3557 METH_HDANCE(hchacha20
, "HChaCha20")
3558 METH_HDANCE(hchacha12
, "HChaCha12")
3559 METH_HDANCE(hchacha8
, "HChaCha8")
3565 void algorithms_pyinit(void)
3567 INITTYPE(keysz
, root
);
3568 INITTYPE(keyszany
, keysz
);
3569 INITTYPE(keyszrange
, keysz
);
3570 INITTYPE(keyszset
, keysz
);
3571 INITTYPE(gccipher
, type
);
3572 INITTYPE(gcipher
, root
);
3573 INITTYPE(gcaead
, type
);
3574 INITTYPE(gaeadkey
, root
);
3575 INITTYPE(gcaeadaad
, type
);
3576 INITTYPE(gaeadaad
, root
);
3577 INITTYPE(gcaeadenc
, type
);
3578 INITTYPE(gaeadenc
, root
);
3579 INITTYPE(gcaeaddec
, type
);
3580 INITTYPE(gaeaddec
, root
);
3581 INITTYPE(gchash
, type
);
3582 INITTYPE(ghash
, root
);
3583 INITTYPE(gcmac
, type
);
3584 INITTYPE(gmac
, type
);
3585 INITTYPE(gmhash
, ghash
);
3586 INITTYPE(poly1305cls
, type
);
3587 INITTYPE_META(poly1305key
, type
, poly1305cls
);
3588 INITTYPE(poly1305hash
, root
);
3589 INITTYPE(kxvik
, root
);
3590 INITTYPE(shake
, root
);
3591 INITTYPE(shake128
, shake
);
3592 INITTYPE(shake256
, shake
);
3593 INITTYPE(gcprp
, type
);
3594 INITTYPE(gprp
, root
);
3595 addmethods(methods
);
3598 #define gcprp prpinfo
3599 #define CLASS_TABLES(_) _(cipher) _(aead) _(hash) _(mac) _(prp)
3600 #define TABLE_FNS(pre) \
3601 static const char *pre##_namefn(const void *p) \
3602 { const gc##pre *const *cls = p; return (*cls ? (*cls)->name : 0); } \
3603 static PyObject *pre##_valfn(const void *p) \
3604 { gc##pre *const*cls = p; return (gc##pre##_pywrap(*cls)); }
3605 CLASS_TABLES(TABLE_FNS
)
3607 void algorithms_pyinsert(PyObject
*mod
)
3610 INSERT("KeySZ", keysz_pytype
);
3611 INSERT("KeySZAny", keyszany_pytype
);
3612 INSERT("KeySZRange", keyszrange_pytype
);
3613 INSERT("KeySZSet", keyszset_pytype
);
3614 INSERT("GCCipher", gccipher_pytype
);
3615 INSERT("GCipher", gcipher_pytype
);
3616 INSERT("gcciphers", make_algtab(gciphertab
, sizeof(gccipher
*),
3617 cipher_namefn
, cipher_valfn
));
3618 INSERT("GCAEAD", gcaead_pytype
);
3619 INSERT("GAEKey", gaeadkey_pytype
);
3620 INSERT("GAEAADClass", gcaeadaad_pytype
);
3621 INSERT("GAEAAD", gaeadaad_pytype
);
3622 INSERT("GAEEncClass", gcaeadenc_pytype
);
3623 INSERT("GAEEnc", gaeadenc_pytype
);
3624 INSERT("GAEDecClass", gcaeaddec_pytype
);
3625 INSERT("GAEDec", gaeaddec_pytype
);
3626 INSERT("gcaeads", make_algtab(gaeadtab
, sizeof(gcaead
*),
3627 aead_namefn
, aead_valfn
));
3628 INSERT("GCHash", gchash_pytype
);
3629 INSERT("GHash", ghash_pytype
);
3630 d
= make_algtab(ghashtab
, sizeof(gchash
*), hash_namefn
, hash_valfn
);
3631 INSERT("gchashes", d
);
3632 sha_pyobj
= PyMapping_GetItemString(d
, "sha"); Py_INCREF(sha_pyobj
);
3633 has160_pyobj
= PyMapping_GetItemString(d
, "has160"); Py_INCREF(has160_pyobj
);
3634 INSERT("GCMAC", gcmac_pytype
);
3635 INSERT("GMAC", gmac_pytype
);
3636 INSERT("GMACHash", gmhash_pytype
);
3637 INSERT("gcmacs", make_algtab(gmactab
, sizeof(gcmac
*),
3638 mac_namefn
, mac_valfn
));
3639 INSERT("Poly1305Class", poly1305cls_pytype
);
3640 INSERT("poly1305", poly1305key_pytype
);
3641 INSERT("Poly1305Hash", poly1305hash_pytype
);
3642 INSERT("Keccak1600", kxvik_pytype
);
3643 INSERT("Shake", shake_pytype
);
3644 INSERT("Shake128", shake128_pytype
);
3645 INSERT("Shake256", shake256_pytype
);
3646 INSERT("GCPRP", gcprp_pytype
);
3647 INSERT("GPRP", gprp_pytype
);
3648 INSERT("gcprps", make_algtab(gprptab
, sizeof(gcprp
*),
3649 prp_namefn
, prp_valfn
));
3650 setconstants(mod
, consts
);
3653 /*----- That's all, folks -------------------------------------------------*/