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 #define default dfl /* ugh! */
219 MEMBER(default, T_INT
, READONLY
, "KSZ.default -> default key size")
225 static const PyGetSetDef keyszany_pygetset
[] = {
226 #define GETSETNAME(op, name) ka##op##_##name
227 GET (min
, "KSZ.min -> smallest allowed key size")
228 GET (max
, "KSZ.max -> largest allowed key size")
233 static const PyMemberDef keyszrange_pymembers
[] = {
234 #define MEMBERSTRUCT keyszrange_pyobj
235 MEMBER(min
, T_INT
, READONLY
, "KSZ.min -> smallest allowed key size")
236 MEMBER(max
, T_INT
, READONLY
, "KSZ.max -> largest allowed key size")
237 MEMBER(mod
, T_INT
, READONLY
,
238 "KSZ.mod -> key size must be a multiple of this")
243 static const PyGetSetDef keyszset_pygetset
[] = {
244 #define GETSETNAME(op, name) ks##op##_##name
245 GET (min
, "KSZ.min -> smallest allowed key size")
246 GET (max
, "KSZ.max -> largest allowed key size")
251 static const PyMemberDef keyszset_pymembers
[] = {
252 #define MEMBERSTRUCT keyszset_pyobj
253 MEMBER(set
, T_OBJECT
, READONLY
, "KSZ.set -> allowed key sizes")
258 static PyTypeObject keysz_pytype_skel
= {
259 PyObject_HEAD_INIT(0) 0, /* Header */
260 "KeySZ", /* @tp_name@ */
261 sizeof(keysz_pyobj
), /* @tp_basicsize@ */
262 0, /* @tp_itemsize@ */
264 0, /* @tp_dealloc@ */
266 0, /* @tp_getattr@ */
267 0, /* @tp_setattr@ */
268 0, /* @tp_compare@ */
270 0, /* @tp_as_number@ */
271 0, /* @tp_as_sequence@ */
272 0, /* @tp_as_mapping@ */
276 0, /* @tp_getattro@ */
277 0, /* @tp_setattro@ */
278 0, /* @tp_as_buffer@ */
279 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
283 "Key size constraints. Abstract.",
285 0, /* @tp_traverse@ */
287 0, /* @tp_richcompare@ */
288 0, /* @tp_weaklistoffset@ */
290 0, /* @tp_iternext@ */
291 0, /* @tp_methods@ */
292 PYMEMBERS(keysz
), /* @tp_members@ */
296 0, /* @tp_descr_get@ */
297 0, /* @tp_descr_set@ */
298 0, /* @tp_dictoffset@ */
300 PyType_GenericAlloc
, /* @tp_alloc@ */
301 abstract_pynew
, /* @tp_new@ */
306 static PyTypeObject keyszany_pytype_skel
= {
307 PyObject_HEAD_INIT(0) 0, /* Header */
308 "KeySZAny", /* @tp_name@ */
309 sizeof(keysz_pyobj
), /* @tp_basicsize@ */
310 0, /* @tp_itemsize@ */
312 0, /* @tp_dealloc@ */
314 0, /* @tp_getattr@ */
315 0, /* @tp_setattr@ */
316 0, /* @tp_compare@ */
318 0, /* @tp_as_number@ */
319 0, /* @tp_as_sequence@ */
320 0, /* @tp_as_mapping@ */
324 0, /* @tp_getattro@ */
325 0, /* @tp_setattro@ */
326 0, /* @tp_as_buffer@ */
327 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
331 "KeySZAny(DEFAULT)\n"
332 " Key size constraints. This object imposes no constraints on size.",
334 0, /* @tp_traverse@ */
336 0, /* @tp_richcompare@ */
337 0, /* @tp_weaklistoffset@ */
339 0, /* @tp_iternext@ */
340 0, /* @tp_methods@ */
341 0, /* @tp_members@ */
342 PYGETSET(keyszany
), /* @tp_getset@ */
345 0, /* @tp_descr_get@ */
346 0, /* @tp_descr_set@ */
347 0, /* @tp_dictoffset@ */
349 PyType_GenericAlloc
, /* @tp_alloc@ */
350 keyszany_pynew
, /* @tp_new@ */
355 static PyTypeObject keyszrange_pytype_skel
= {
356 PyObject_HEAD_INIT(0) 0, /* Header */
357 "KeySZRange", /* @tp_name@ */
358 sizeof(keyszrange_pyobj
), /* @tp_basicsize@ */
359 0, /* @tp_itemsize@ */
361 0, /* @tp_dealloc@ */
363 0, /* @tp_getattr@ */
364 0, /* @tp_setattr@ */
365 0, /* @tp_compare@ */
367 0, /* @tp_as_number@ */
368 0, /* @tp_as_sequence@ */
369 0, /* @tp_as_mapping@ */
373 0, /* @tp_getattro@ */
374 0, /* @tp_setattro@ */
375 0, /* @tp_as_buffer@ */
376 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
380 "KeySZRange(DEFAULT, [min = 0], [max = 0], [mod = 1])\n"
381 " Key size constraints: size must be between MIN and MAX inclusive, and\n"
382 " be a multiple of MOD.",
384 0, /* @tp_traverse@ */
386 0, /* @tp_richcompare@ */
387 0, /* @tp_weaklistoffset@ */
389 0, /* @tp_iternext@ */
390 0, /* @tp_methods@ */
391 PYMEMBERS(keyszrange
), /* @tp_members@ */
395 0, /* @tp_descr_get@ */
396 0, /* @tp_descr_set@ */
397 0, /* @tp_dictoffset@ */
399 PyType_GenericAlloc
, /* @tp_alloc@ */
400 keyszrange_pynew
, /* @tp_new@ */
405 static PyTypeObject keyszset_pytype_skel
= {
406 PyObject_HEAD_INIT(0) 0, /* Header */
407 "KeySZSet", /* @tp_name@ */
408 sizeof(keyszset_pyobj
), /* @tp_basicsize@ */
409 0, /* @tp_itemsize@ */
411 0, /* @tp_dealloc@ */
413 0, /* @tp_getattr@ */
414 0, /* @tp_setattr@ */
415 0, /* @tp_compare@ */
417 0, /* @tp_as_number@ */
418 0, /* @tp_as_sequence@ */
419 0, /* @tp_as_mapping@ */
423 0, /* @tp_getattro@ */
424 0, /* @tp_setattro@ */
425 0, /* @tp_as_buffer@ */
426 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
430 "KeySZSet(DEFAULT, SEQ)\n"
431 " Key size constraints: size must be DEFAULT or an element of SEQ.",
433 0, /* @tp_traverse@ */
435 0, /* @tp_richcompare@ */
436 0, /* @tp_weaklistoffset@ */
438 0, /* @tp_iternext@ */
439 0, /* @tp_methods@ */
440 PYMEMBERS(keyszset
), /* @tp_members@ */
441 PYGETSET(keyszset
), /* @tp_getset@ */
444 0, /* @tp_descr_get@ */
445 0, /* @tp_descr_set@ */
446 0, /* @tp_dictoffset@ */
448 PyType_GenericAlloc
, /* @tp_alloc@ */
449 keyszset_pynew
, /* @tp_new@ */
454 #define KSZCONVOP(op) \
455 static PyObject *meth__KeySZ_##op(PyObject *me, PyObject *arg) \
458 if (!PyArg_ParseTuple(arg, "Od:" #op, &me, &x)) return (0); \
460 return (PyFloat_FromDouble(y)); \
463 KSZCONVOP(fromschnorr
)
472 /*----- Symmetric encryption ----------------------------------------------*/
474 static PyTypeObject
*gccipher_pytype
, *gcipher_pytype
;
476 typedef struct gccipher_pyobj
{
481 #define GCCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gccipher_pytype)
482 #define GCCIPHER_CC(o) (((gccipher_pyobj *)(o))->cc)
484 typedef struct gcipher_pyobj
{
489 #define GCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gcipher_pytype)
490 #define GCIPHER_C(o) (((gcipher_pyobj *)(o))->c)
492 CONVFUNC(gccipher
, gccipher
*, GCCIPHER_CC
)
494 static PyObject
*gcipher_pywrap(PyObject
*cobj
, gcipher
*c
)
497 if (!cobj
) cobj
= gccipher_pywrap((/*unconst*/ gccipher
*)GC_CLASS(c
));
498 else Py_INCREF(cobj
);
499 g
= PyObject_NEW(gcipher_pyobj
, (PyTypeObject
*)cobj
);
501 return ((PyObject
*)g
);
504 static PyObject
*gcipher_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
506 static const char *const kwlist
[] = { "k", 0 };
510 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
512 if (keysz(sz
, GCCIPHER_CC(ty
)->keysz
) != sz
) VALERR("bad key length");
513 return (gcipher_pywrap((PyObject
*)ty
,
514 GC_INIT(GCCIPHER_CC(ty
), k
, sz
)));
519 PyObject
*gccipher_pywrap(gccipher
*cc
)
521 gccipher_pyobj
*g
= newtype(gccipher_pytype
, 0, cc
->name
);
523 g
->ty
.ht_type
.tp_basicsize
= sizeof(gcipher_pyobj
);
524 g
->ty
.ht_type
.tp_base
= gcipher_pytype
;
525 Py_INCREF(gcipher_pytype
);
526 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
527 Py_TPFLAGS_BASETYPE
|
528 Py_TPFLAGS_HEAPTYPE
);
529 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
530 g
->ty
.ht_type
.tp_free
= 0;
531 g
->ty
.ht_type
.tp_new
= gcipher_pynew
;
532 typeready(&g
->ty
.ht_type
);
533 return ((PyObject
*)g
);
536 static void gcipher_pydealloc(PyObject
*me
)
538 GC_DESTROY(GCIPHER_C(me
));
539 Py_DECREF(me
->ob_type
);
543 static PyObject
*gccget_name(PyObject
*me
, void *hunoz
)
544 { return (PyString_FromString(GCCIPHER_CC(me
)->name
)); }
546 static PyObject
*gccget_keysz(PyObject
*me
, void *hunoz
)
547 { return (keysz_pywrap(GCCIPHER_CC(me
)->keysz
)); }
549 static PyObject
*gccget_blksz(PyObject
*me
, void *hunoz
)
550 { return (PyInt_FromLong(GCCIPHER_CC(me
)->blksz
)); }
552 static PyObject
*gcmeth_encrypt(PyObject
*me
, PyObject
*arg
)
558 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &p
, &sz
)) return (0);
559 rc
= bytestring_pywrap(0, sz
);
560 GC_ENCRYPT(GCIPHER_C(me
), p
, PyString_AS_STRING(rc
), sz
);
564 static PyObject
*gcmeth_enczero(PyObject
*me
, PyObject
*arg
)
570 if (!PyArg_ParseTuple(arg
, "i:enczero", &sz
)) return (0);
571 rc
= bytestring_pywrap(0, sz
);
572 p
= PyString_AS_STRING(rc
);
574 GC_ENCRYPT(GCIPHER_C(me
), p
, p
, sz
);
578 static PyObject
*gcmeth_decrypt(PyObject
*me
, PyObject
*arg
)
584 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &p
, &sz
)) return (0);
585 rc
= bytestring_pywrap(0, sz
);
586 GC_DECRYPT(GCIPHER_C(me
), p
, PyString_AS_STRING(rc
), sz
);
590 static PyObject
*gcmeth_deczero(PyObject
*me
, PyObject
*arg
)
596 if (!PyArg_ParseTuple(arg
, "i:deczero", &sz
)) return (0);
597 rc
= bytestring_pywrap(0, sz
);
598 p
= PyString_AS_STRING(rc
);
600 GC_DECRYPT(GCIPHER_C(me
), p
, p
, sz
);
604 static PyObject
*gcmeth_setiv(PyObject
*me
, PyObject
*arg
)
609 if (!PyArg_ParseTuple(arg
, "s#:setiv", &p
, &sz
)) goto end
;
610 if (!GCIPHER_C(me
)->ops
->setiv
) VALERR("`setiv' not supported");
611 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
612 if (sz
!= GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("bad IV length");
613 GC_SETIV(GCIPHER_C(me
), p
);
619 static PyObject
*gcmeth_bdry(PyObject
*me
, PyObject
*arg
)
621 if (!PyArg_ParseTuple(arg
, ":bdry")) goto end
;
622 if (!GCIPHER_C(me
)->ops
->bdry
) VALERR("`bdry' not supported");
623 if (!GC_CLASS(GCIPHER_C(me
))->blksz
) VALERR("not a block cipher mode");
624 GC_BDRY(GCIPHER_C(me
));
630 static const PyGetSetDef gccipher_pygetset
[] = {
631 #define GETSETNAME(op, name) gcc##op##_##name
632 GET (keysz
, "CC.keysz -> acceptable key sizes")
633 GET (blksz
, "CC.blksz -> block size, or zero")
634 GET (name
, "CC.name -> name of this kind of cipher")
639 static const PyMethodDef gcipher_pymethods
[] = {
640 #define METHNAME(name) gcmeth_##name
641 METH (encrypt
, "C.encrypt(PT) -> CT")
642 METH (enczero
, "C.enczero(N) -> CT")
643 METH (decrypt
, "C.decrypt(CT) -> PT")
644 METH (deczero
, "C.deczero(N) -> PT")
645 METH (setiv
, "C.setiv(IV)")
646 METH (bdry
, "C.bdry()")
651 static PyTypeObject gccipher_pytype_skel
= {
652 PyObject_HEAD_INIT(0) 0, /* Header */
653 "GCCipher", /* @tp_name@ */
654 sizeof(gccipher_pyobj
), /* @tp_basicsize@ */
655 0, /* @tp_itemsize@ */
657 0, /* @tp_dealloc@ */
659 0, /* @tp_getattr@ */
660 0, /* @tp_setattr@ */
661 0, /* @tp_compare@ */
663 0, /* @tp_as_number@ */
664 0, /* @tp_as_sequence@ */
665 0, /* @tp_as_mapping@ */
669 0, /* @tp_getattro@ */
670 0, /* @tp_setattro@ */
671 0, /* @tp_as_buffer@ */
672 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
676 "Symmetric cipher metaclass.",
678 0, /* @tp_traverse@ */
680 0, /* @tp_richcompare@ */
681 0, /* @tp_weaklistoffset@ */
683 0, /* @tp_iternext@ */
684 0, /* @tp_methods@ */
685 0, /* @tp_members@ */
686 PYGETSET(gccipher
), /* @tp_getset@ */
689 0, /* @tp_descr_get@ */
690 0, /* @tp_descr_set@ */
691 0, /* @tp_dictoffset@ */
693 PyType_GenericAlloc
, /* @tp_alloc@ */
694 abstract_pynew
, /* @tp_new@ */
699 static PyTypeObject gcipher_pytype_skel
= {
700 PyObject_HEAD_INIT(0) 0, /* Header */
701 "GCipher", /* @tp_name@ */
702 sizeof(gcipher_pyobj
), /* @tp_basicsize@ */
703 0, /* @tp_itemsize@ */
705 gcipher_pydealloc
, /* @tp_dealloc@ */
707 0, /* @tp_getattr@ */
708 0, /* @tp_setattr@ */
709 0, /* @tp_compare@ */
711 0, /* @tp_as_number@ */
712 0, /* @tp_as_sequence@ */
713 0, /* @tp_as_mapping@ */
717 0, /* @tp_getattro@ */
718 0, /* @tp_setattro@ */
719 0, /* @tp_as_buffer@ */
720 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
724 "Symmetric cipher, abstract base class.",
726 0, /* @tp_traverse@ */
728 0, /* @tp_richcompare@ */
729 0, /* @tp_weaklistoffset@ */
731 0, /* @tp_iternext@ */
732 PYMETHODS(gcipher
), /* @tp_methods@ */
733 0, /* @tp_members@ */
737 0, /* @tp_descr_get@ */
738 0, /* @tp_descr_set@ */
739 0, /* @tp_dictoffset@ */
741 PyType_GenericAlloc
, /* @tp_alloc@ */
742 abstract_pynew
, /* @tp_new@ */
747 /*----- Authenticated encryption ------------------------------------------*/
749 static PyTypeObject
*gcaead_pytype
, *gaeadkey_pytype
;
750 static PyTypeObject
*gcaeadaad_pytype
, *gaeadaad_pytype
;
751 static PyTypeObject
*gcaeadenc_pytype
, *gaeadenc_pytype
;
752 static PyTypeObject
*gcaeaddec_pytype
, *gaeaddec_pytype
;
754 typedef struct gcaead_pyobj
{
757 struct gcaeadaad_pyobj
*aad
;
758 struct gcaeadenc_pyobj
*enc
;
759 struct gcaeaddec_pyobj
*dec
;
762 #define GCAEAD_PYCHECK(o) PyObject_TypeCheck((o), gcaead_pytype)
763 #define GCAEAD_AEC(o) (((gcaead_pyobj *)(o))->aec)
764 #define GCAEAD_AAD(o) (((gcaead_pyobj *)(o))->aad)
765 #define GCAEAD_ENC(o) (((gcaead_pyobj *)(o))->enc)
766 #define GCAEAD_DEC(o) (((gcaead_pyobj *)(o))->dec)
767 static PyObject
*gcaead_pywrap(gcaead
*);
769 typedef struct gaeadkey_pyobj
{
774 #define GAEADKEY_PYCHECK(o) PyObject_TypeCheck((o), gaeadkey_pytype)
775 #define GAEADKEY_K(o) (((gaeadkey_pyobj *)(o))->k)
777 typedef struct gcaeadaad_pyobj
{
782 #define GCAEADAAD_KEY(o) (((gcaeadaad_pyobj *)(o))->key)
783 static PyObject
*gaeadaad_pywrap(PyObject
*, gaead_aad
*, unsigned, size_t);
785 typedef struct gaeadaad_pyobj
{
789 #define AEADF_DEAD 32768u
793 #define GAEADAAD_PYCHECK(o) PyObject_TypeCheck((o), gaeadaad_pytype)
794 #define GAEADAAD_A(o) (((gaeadaad_pyobj *)(o))->a)
795 #define GAEADAAD_F(o) (((gaeadaad_pyobj *)(o))->f)
796 #define GAEADAAD_HSZ(o) (((gaeadaad_pyobj *)(o))->hsz)
797 #define GAEADAAD_HLEN(o) (((gaeadaad_pyobj *)(o))->hlen)
799 typedef struct gcaeadenc_pyobj
{
804 #define GCAEADENC_KEY(o) (((gcaeadenc_pyobj *)(o))->key)
805 static PyObject
*gaeadenc_pywrap(PyObject
*, gaead_enc
*, unsigned,
806 size_t, size_t, size_t);
808 typedef struct gaeadenc_pyobj
{
813 size_t hsz
, msz
, tsz
;
817 #define GAEADENC_PYCHECK(o) PyObject_TypeCheck((o), gaeadenc_pytype)
818 #define GAEADENC_AAD(o) (((gaeadenc_pyobj *)(o))->aad)
819 #define GAEADENC_E(o) (((gaeadenc_pyobj *)(o))->e)
820 #define GAEADENC_F(o) (((gaeadenc_pyobj *)(o))->f)
821 #define GAEADENC_HSZ(o) (((gaeadenc_pyobj *)(o))->hsz)
822 #define GAEADENC_MSZ(o) (((gaeadenc_pyobj *)(o))->msz)
823 #define GAEADENC_TSZ(o) (((gaeadenc_pyobj *)(o))->tsz)
824 #define GAEADENC_MLEN(o) (((gaeadenc_pyobj *)(o))->mlen)
826 typedef struct gcaeaddec_pyobj
{
831 #define GCAEADDEC_KEY(o) (((gcaeaddec_pyobj *)(o))->key)
832 static PyObject
*gaeaddec_pywrap(PyObject
*, gaead_dec
*, unsigned,
833 size_t, size_t, size_t);
835 typedef struct gaeaddec_pyobj
{
840 size_t hsz
, csz
, tsz
;
844 #define GAEADDEC_PYCHECK(o) PyObject_TypeCheck((o), gaeaddec_pytype)
845 #define GAEADDEC_AAD(o) (((gaeaddec_pyobj *)(o))->aad)
846 #define GAEADDEC_D(o) (((gaeaddec_pyobj *)(o))->d)
847 #define GAEADDEC_F(o) (((gaeaddec_pyobj *)(o))->f)
848 #define GAEADDEC_HSZ(o) (((gaeaddec_pyobj *)(o))->hsz)
849 #define GAEADDEC_CSZ(o) (((gaeaddec_pyobj *)(o))->csz)
850 #define GAEADDEC_TSZ(o) (((gaeaddec_pyobj *)(o))->tsz)
851 #define GAEADDEC_CLEN(o) (((gaeaddec_pyobj *)(o))->clen)
853 static PyObject
*gaeadkey_pywrap(PyObject
*cobj
, gaead_key
*k
)
857 if (!cobj
) cobj
= gcaead_pywrap((/*unconst*/ gcaead
*)GAEAD_CLASS(k
));
858 else Py_INCREF(cobj
);
859 gk
= PyObject_NEW(gaeadkey_pyobj
, (PyTypeObject
*)cobj
);
861 return ((PyObject
*)gk
);
864 static PyObject
*gaeadkey_pynew(PyTypeObject
*ty
,
865 PyObject
*arg
, PyObject
*kw
)
867 static const char *const kwlist
[] = { "k", 0 };
871 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
873 if (keysz(sz
, GCAEAD_AEC(ty
)->keysz
) != sz
) VALERR("bad key length");
874 return (gaeadkey_pywrap((PyObject
*)ty
,
875 GAEAD_KEY(GCAEAD_AEC(ty
), k
, sz
)));
880 static PyObject
*gcaead_pywrap(gcaead
*aec
)
883 gcaeadaad_pyobj
*gca
;
884 gcaeadenc_pyobj
*gce
;
885 gcaeaddec_pyobj
*gcd
;
887 #define MKTYPE(obj, thing, newfn, namefmt) do { \
888 (obj) = newtype(gcaead_pytype, 0, 0); \
889 (obj)->ty.ht_name = PyString_FromFormat(namefmt, aec->name); \
890 (obj)->ty.ht_type.tp_name = PyString_AS_STRING((obj)->ty.ht_name); \
891 (obj)->ty.ht_type.tp_basicsize = sizeof(gaead##thing##_pyobj); \
892 (obj)->ty.ht_type.tp_base = gaead##thing##_pytype; \
893 Py_INCREF(gaead##thing##_pytype); \
894 (obj)->ty.ht_type.tp_flags = \
895 (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE); \
896 (obj)->ty.ht_type.tp_alloc = PyType_GenericAlloc; \
897 (obj)->ty.ht_type.tp_free = 0; \
898 (obj)->ty.ht_type.tp_new = newfn; \
899 typeready(&(obj)->ty.ht_type); \
902 MKTYPE(gck
, key
, gaeadkey_pynew
, "%s(key)");
903 MKTYPE(gca
, aad
, abstract_pynew
, "%s(aad-hash)");
904 MKTYPE(gce
, enc
, abstract_pynew
, "%s(encrypt)");
905 MKTYPE(gcd
, dec
, abstract_pynew
, "%s(decrypt)");
909 gck
->aec
= aec
; gck
->aad
= gca
; gck
->enc
= gce
; gck
->dec
= gcd
;
910 gca
->key
= gce
->key
= gcd
->key
= gck
;
911 return ((PyObject
*)gck
);
914 static void gaeadkey_pydealloc(PyObject
*me
)
915 { GAEAD_DESTROY(GAEADKEY_K(me
)); Py_DECREF(me
->ob_type
); FREEOBJ(me
); }
917 static PyObject
*gcaeget_name(PyObject
*me
, void *hunoz
)
918 { return (PyString_FromString(GCAEAD_AEC(me
)->name
)); }
920 static PyObject
*gcaeget_keysz(PyObject
*me
, void *hunoz
)
921 { return (keysz_pywrap(GCAEAD_AEC(me
)->keysz
)); }
923 static PyObject
*gcaeget_noncesz(PyObject
*me
, void *hunoz
)
924 { return (keysz_pywrap(GCAEAD_AEC(me
)->noncesz
)); }
926 static PyObject
*gcaeget_tagsz(PyObject
*me
, void *hunoz
)
927 { return (keysz_pywrap(GCAEAD_AEC(me
)->tagsz
)); }
929 static PyObject
*gcaeget_blksz(PyObject
*me
, void *hunoz
)
930 { return (PyInt_FromLong(GCAEAD_AEC(me
)->blksz
)); }
932 static PyObject
*gcaeget_bufsz(PyObject
*me
, void *hunoz
)
933 { return (PyInt_FromLong(GCAEAD_AEC(me
)->bufsz
)); }
935 static PyObject
*gcaeget_ohd(PyObject
*me
, void *hunoz
)
936 { return (PyInt_FromLong(GCAEAD_AEC(me
)->ohd
)); }
938 static PyObject
*gcaeget_flags(PyObject
*me
, void *hunoz
)
939 { return (PyInt_FromLong(GCAEAD_AEC(me
)->f
)); }
941 static const PyGetSetDef gcaead_pygetset
[] = {
942 #define GETSETNAME(op, name) gcae##op##_##name
943 GET (keysz
, "AEC.keysz -> acceptable key sizes")
944 GET (noncesz
, "AEC.noncesz -> acceptable nonce sizes")
945 GET (tagsz
, "AEC.tagsz -> acceptable tag sizes")
946 GET (blksz
, "AEC.blksz -> block size, or zero")
947 GET (bufsz
, "AEC.bufsz -> amount of data buffered internally")
948 GET (ohd
, "AEC.ohd -> maximum encryption overhead")
949 GET (name
, "AEC.name -> name of this kind of AEAD scheme")
950 GET (flags
, "AEC.flags -> mask of `AEADF_...' flags")
955 static PyObject
*gaekmeth_aad(PyObject
*me
, PyObject
*arg
)
957 const gaead_key
*k
= GAEADKEY_K(me
);
960 if (!PyArg_ParseTuple(arg
, ":aad")) return (0);
961 if (k
->ops
->c
->f
&AEADF_AADNDEP
)
962 VALERR("aad must be associated with enc/dec op");
963 rc
= gaeadaad_pywrap((PyObject
*)GCAEAD_AAD(me
->ob_type
),
969 static int check_aead_encdec(const gcaead
*aec
, unsigned *f_out
, size_t nsz
,
970 PyObject
*hszobj
, size_t *hsz_out
,
971 PyObject
*mszobj
, size_t *msz_out
,
972 PyObject
*tszobj
, size_t *tsz_out
)
974 unsigned f
= 0, miss
;
977 if (hszobj
!= Py_None
)
978 { f
|= AEADF_PCHSZ
; if (!convszt(hszobj
, hsz_out
)) goto end
; }
979 if (mszobj
!= Py_None
)
980 { f
|= AEADF_PCMSZ
; if (!convszt(mszobj
, msz_out
)) goto end
; }
981 if (tszobj
!= Py_None
)
982 { f
|= AEADF_PCTSZ
; if (!convszt(tszobj
, tsz_out
)) goto end
; }
984 if (miss
&AEADF_PCHSZ
) VALERR("header length precommitment required");
985 if (miss
&AEADF_PCMSZ
) VALERR("message length precommitment required");
986 if (miss
&AEADF_PCTSZ
) VALERR("tag length precommitment required");
987 if (keysz(nsz
, aec
->noncesz
) != nsz
) VALERR("bad nonce length");
988 if (tszobj
!= Py_None
&& keysz(*tsz_out
, aec
->tagsz
) != *tsz_out
)
989 VALERR("bad tag length");
990 *f_out
= f
| aec
->f
; rc
= 0;
995 static PyObject
*gaekmeth_enc(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
997 static const char *const kwlist
[] = { "nonce", "hsz", "msz", "tsz", 0 };
998 const gaead_key
*k
= GAEADKEY_K(me
);
1001 char *n
; Py_ssize_t nsz
;
1002 PyObject
*hszobj
= Py_None
, *mszobj
= Py_None
, *tszobj
= Py_None
;
1003 size_t hsz
= 0, msz
= 0, tsz
= 0;
1006 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
1007 &n
, &nsz
, &hszobj
, &mszobj
, &tszobj
))
1009 if (check_aead_encdec(k
->ops
->c
, &f
, nsz
,
1010 hszobj
, &hsz
, mszobj
, &msz
, tszobj
, &tsz
))
1012 e
= GAEAD_ENC(GAEADKEY_K(me
), n
, nsz
, hsz
, msz
, tsz
);
1013 if (!e
) VALERR("bad aead parameter combination");
1014 rc
= gaeadenc_pywrap((PyObject
*)GCAEAD_ENC(me
->ob_type
),
1015 e
, f
, hsz
, msz
, tsz
);
1020 static PyObject
*gaekmeth_dec(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1022 static const char *const kwlist
[] = { "nonce", "hsz", "csz", "tsz", 0 };
1023 const gaead_key
*k
= GAEADKEY_K(me
);
1026 char *n
; Py_ssize_t nsz
;
1027 PyObject
*hszobj
= Py_None
, *cszobj
= Py_None
, *tszobj
= Py_None
;
1028 size_t hsz
= 0, csz
= 0, tsz
= 0;
1031 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:dec", KWLIST
,
1032 &n
, &nsz
, &hszobj
, &cszobj
, &tszobj
))
1034 if (check_aead_encdec(k
->ops
->c
, &f
, nsz
,
1035 hszobj
, &hsz
, cszobj
, &csz
, tszobj
, &tsz
))
1037 d
= GAEAD_DEC(GAEADKEY_K(me
), n
, nsz
, hsz
, csz
, tsz
);
1038 if (!d
) VALERR("bad aead parameter combination");
1039 rc
= gaeaddec_pywrap((PyObject
*)GCAEAD_DEC(me
->ob_type
),
1040 d
, f
, hsz
, csz
, tsz
);
1045 static const PyMethodDef gaeadkey_pymethods
[] = {
1046 #define METHNAME(name) gaekmeth_##name
1047 METH (aad
, "KEY.aad() -> AAD")
1048 KWMETH(enc
, "KEY.enc(NONCE, [hsz], [msz], [tsz]) -> ENC")
1049 KWMETH(dec
, "KEY.dec(NONCE, [hsz], [csz], [tsz]) -> DEC")
1054 static PyObject
*gaeadaad_pywrap(PyObject
*cobj
, gaead_aad
*a
,
1055 unsigned f
, size_t hsz
)
1059 assert(cobj
); Py_INCREF(cobj
);
1060 ga
= PyObject_NEW(gaeadaad_pyobj
, (PyTypeObject
*)cobj
);
1061 ga
->a
= a
; ga
->f
= f
; ga
->hsz
= hsz
; ga
->hlen
= 0;
1062 return ((PyObject
*)ga
);
1065 static void gaeadaad_pydealloc(PyObject
*me
)
1067 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1069 if (ga
->a
) GAEAD_DESTROY(ga
->a
);
1070 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
1073 static int gaea_check(PyObject
*me
)
1075 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1078 if ((ga
->f
&AEADF_DEAD
) || !ga
->a
) VALERR("aad object no longer active");
1084 static void gaea_invalidate(gaeadaad_pyobj
*ga
)
1085 { if (ga
) ga
->f
|= AEADF_DEAD
; }
1087 static void gaea_sever(gaeadaad_pyobj
**ga_inout
)
1089 gaeadaad_pyobj
*ga
= *ga_inout
;
1090 if (ga
) { ga
->f
|= AEADF_DEAD
; ga
->a
= 0; Py_DECREF(ga
); *ga_inout
= 0; }
1093 static PyObject
*gaeaget_hsz(PyObject
*me
, void *hunoz
)
1095 if (gaea_check(me
)) return (0);
1096 else if (GAEADAAD_F(me
)&AEADF_PCHSZ
) return getulong(GAEADAAD_HSZ(me
));
1100 static PyObject
*gaeaget_hlen(PyObject
*me
, void *hunoz
)
1101 { return (gaea_check(me
) ?
0 : getulong(GAEADAAD_HLEN(me
))); }
1103 static const PyGetSetDef gaeadaad_pygetset
[] = {
1104 #define GETSETNAME(op, name) gaea##op##_##name
1105 GET (hsz
, "AAD.hsz -> precommitted header length or `None'")
1106 GET (hlen
, "AAD.hlen -> header length so far")
1111 static PyObject
*gaeameth_copy(PyObject
*me
, PyObject
*arg
)
1115 if (!PyArg_ParseTuple(arg
, ":copy")) goto end
;
1116 if (gaea_check(me
)) goto end
;
1117 if (GAEADAAD_F(me
)&AEADF_AADNDEP
)
1118 VALERR("can't duplicate nonce-dependent aad");
1119 rc
= gaeadaad_pywrap((PyObject
*)me
->ob_type
,
1120 GAEAD_DUP(GAEADAAD_A(me
)), 0, 0);
1121 GAEADAAD_HLEN(rc
) = GAEADAAD_HLEN(me
);
1126 static int gaeadaad_hash(PyObject
*me
, const void *h
, size_t hsz
)
1128 gaeadaad_pyobj
*ga
= (gaeadaad_pyobj
*)me
;
1131 if (gaea_check(me
)) goto end
;
1132 if ((ga
->f
&AEADF_NOAAD
) && hsz
)
1133 VALERR("header data not permitted");
1134 if ((ga
->f
&AEADF_PCHSZ
) && hsz
> ga
->hsz
- ga
->hlen
)
1135 VALERR("too large for precommitted header length");
1136 GAEAD_HASH(ga
->a
, h
, hsz
); ga
->hlen
+= hsz
;
1143 static PyObject
*gaeameth_hash(PyObject
*me
, PyObject
*arg
)
1145 char *h
; Py_ssize_t hsz
;
1147 if (!PyArg_ParseTuple(arg
, "s#:hash", &h
, &hsz
)) return (0);
1148 if (gaeadaad_hash(me
, h
, hsz
)) return (0);
1152 #define GAEAMETH_HASHU_(n, W, w) \
1153 static PyObject *gaeameth_hashu##w(PyObject *me, PyObject *arg) \
1155 uint##n x; octet b[SZ_##W]; \
1156 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
1157 STORE##W(b, x); if (gaeadaad_hash(me, b, sizeof(b))) return (0); \
1160 DOUINTCONV(GAEAMETH_HASHU_
)
1162 #define GAEAMETH_HASHBUF_(n, W, w) \
1163 static PyObject *gaeameth_hashbuf##w(PyObject *me, PyObject *arg) \
1165 char *p; Py_ssize_t sz; octet b[SZ_##W]; \
1166 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1167 if (sz > MASK##n) TYERR("string too long"); \
1168 STORE##W(b, sz); if (gaeadaad_hash(me, b, sizeof(b))) goto end; \
1169 if (gaeadaad_hash(me, p, sz)) goto end; \
1174 DOUINTCONV(GAEAMETH_HASHBUF_
)
1176 static PyObject
*gaeameth_hashstrz(PyObject
*me
, PyObject
*arg
)
1179 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
1180 if (gaeadaad_hash(me
, p
, strlen(p
) + 1)) return (0);
1184 static const PyMethodDef gaeadaad_pymethods
[] = {
1185 #define METHNAME(name) gaeameth_##name
1186 METH (copy
, "AAD.copy() -> AAD'")
1187 METH (hash
, "AAD.hash(H)")
1188 #define METHU_(n, W, w) METH(hashu##w, "AAD.hashu" #w "(WORD)")
1191 #define METHBUF_(n, W, w) METH(hashbuf##w, "AAD.hashbuf" #w "(BYTES)")
1192 DOUINTCONV(METHBUF_
)
1194 METH (hashstrz
, "AAD.hashstrz(STRING)")
1199 static PyObject
*gaeadenc_pywrap(PyObject
*cobj
, gaead_enc
*e
, unsigned f
,
1200 size_t hsz
, size_t msz
, size_t tsz
)
1204 assert(cobj
); Py_INCREF(cobj
);
1205 ge
= PyObject_NEW(gaeadenc_pyobj
, (PyTypeObject
*)cobj
);
1206 ge
->e
= e
; ge
->f
= f
; ge
->hsz
= hsz
; ge
->msz
= msz
; ge
->tsz
= tsz
;
1207 ge
->aad
= 0; ge
->mlen
= 0;
1208 return ((PyObject
*)ge
);
1211 static void gaeadenc_pydealloc(PyObject
*me
)
1213 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1215 gaea_sever(&ge
->aad
); GAEAD_DESTROY(ge
->e
);
1216 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
1219 static PyObject
*gaeeget_hsz(PyObject
*me
, void *hunoz
)
1221 if (GAEADENC_F(me
)&AEADF_PCHSZ
) return getulong(GAEADENC_HSZ(me
));
1225 static PyObject
*gaeeget_msz(PyObject
*me
, void *hunoz
)
1227 if (GAEADENC_F(me
)&AEADF_PCMSZ
) return getulong(GAEADENC_MSZ(me
));
1231 static PyObject
*gaeeget_tsz(PyObject
*me
, void *hunoz
)
1233 if (GAEADENC_F(me
)&AEADF_PCTSZ
) return getulong(GAEADENC_TSZ(me
));
1237 static PyObject
*gaeeget_mlen(PyObject
*me
, void *hunoz
)
1238 { return getulong(GAEADENC_MLEN(me
)); }
1240 static const PyGetSetDef gaeadenc_pygetset
[] = {
1241 #define GETSETNAME(op, name) gaee##op##_##name
1242 GET (hsz
, "ENC.hsz -> precommitted header length or `None'")
1243 GET (msz
, "ENC.msz -> precommitted message length or `None'")
1244 GET (tsz
, "ENC.tsz -> precommitted tag length or `None'")
1245 GET (mlen
, "ENC.mlen -> message length so far")
1250 static PyObject
*gaeemeth_aad(PyObject
*me
, PyObject
*arg
)
1252 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1255 if (!PyArg_ParseTuple(arg
, ":aad")) return (0);
1256 if (!(ge
->f
&AEADF_AADNDEP
))
1257 rc
= gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(ge
->ob_type
)->aad
,
1258 GAEAD_AAD(ge
->e
), 0, 0);
1260 if ((ge
->f
&AEADF_AADFIRST
) && ge
->mlen
)
1261 VALERR("too late for aad");
1263 ge
->aad
= (gaeadaad_pyobj
*)
1264 gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(ge
->ob_type
)->aad
,
1265 GAEAD_AAD(ge
->e
), ge
->f
&(AEADF_PCHSZ
| AEADF_NOAAD
),
1268 rc
= (PyObject
*)ge
->aad
;
1274 static PyObject
*gaeemeth_reinit(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1276 static const char *const kwlist
[] = { "nonce", "hsz", "msz", "tsz", 0 };
1277 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1278 char *n
; Py_ssize_t nsz
;
1279 PyObject
*hszobj
= Py_None
, *mszobj
= Py_None
, *tszobj
= Py_None
;
1280 size_t hsz
= 0, msz
= 0, tsz
= 0;
1283 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
1284 &n
, &nsz
, &hszobj
, &mszobj
, &tszobj
))
1286 if (check_aead_encdec(ge
->e
->ops
->c
, &f
, nsz
,
1287 hszobj
, &hsz
, mszobj
, &msz
, tszobj
, &tsz
))
1289 if (GAEAD_REINIT(ge
->e
, n
, nsz
, hsz
, msz
, tsz
))
1290 VALERR("bad aead parameter combination");
1291 gaea_sever(&ge
->aad
);
1292 ge
->f
= f
; ge
->hsz
= hsz
; ge
->msz
= msz
; ge
->tsz
= tsz
;
1297 static PyObject
*gaeemeth_encrypt(PyObject
*me
, PyObject
*arg
)
1299 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1300 char *m
; Py_ssize_t msz
;
1301 char *c
= 0; size_t csz
; buf b
;
1305 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &m
, &msz
)) goto end
;
1306 if (ge
->f
&AEADF_AADFIRST
) {
1307 if ((ge
->f
&AEADF_PCHSZ
) && (ge
->aad ? ge
->aad
->hlen
: 0) != ge
->hsz
)
1308 VALERR("header doesn't match precommitted length");
1309 gaea_invalidate(ge
->aad
);
1311 if ((ge
->f
&AEADF_PCMSZ
) && msz
> ge
->msz
- ge
->mlen
)
1312 VALERR("too large for precommitted message length");
1313 csz
= msz
+ ge
->e
->ops
->c
->bufsz
; c
= xmalloc(csz
); buf_init(&b
, c
, csz
);
1314 err
= GAEAD_ENCRYPT(ge
->e
, m
, msz
, &b
); assert(!err
); (void)err
;
1315 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
); ge
->mlen
+= msz
;
1321 static PyObject
*gaeemeth_done(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1323 static const char *const kwlist
[] = { "tsz", "aad", 0 };
1324 gaeadenc_pyobj
*ge
= (gaeadenc_pyobj
*)me
;
1325 PyObject
*aad
= Py_None
;
1326 char *c
= 0; size_t csz
; buf b
;
1327 PyObject
*tszobj
= Py_None
; PyObject
*tag
; size_t tsz
;
1331 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|OO:done", KWLIST
,
1334 if (tszobj
!= Py_None
&& !convszt(tszobj
, &tsz
)) goto end
;
1335 if (aad
!= Py_None
&&
1336 !PyObject_TypeCheck(aad
,
1337 (PyTypeObject
*)GCAEADENC_KEY(me
->ob_type
)->aad
))
1338 TYERR("wanted aad");
1339 if ((ge
->f
&AEADF_AADNDEP
) && aad
!= Py_None
&& aad
!= (PyObject
*)ge
->aad
)
1340 VALERR("mismatched aad");
1341 if ((ge
->f
&AEADF_PCHSZ
) &&
1342 (aad
== Py_None ?
0 : GAEADAAD_HLEN(aad
)) != ge
->hsz
)
1343 VALERR("header doesn't match precommitted length");
1344 if ((ge
->f
&AEADF_PCMSZ
) && ge
->mlen
!= ge
->msz
)
1345 VALERR("message doesn't match precommitted length");
1346 if (tszobj
== Py_None
) {
1347 if (ge
->f
&AEADF_PCTSZ
) tsz
= ge
->tsz
;
1348 else tsz
= keysz(0, ge
->e
->ops
->c
->tagsz
);
1350 if ((ge
->f
&AEADF_PCTSZ
) && tsz
!= ge
->tsz
)
1351 VALERR("tag length doesn't match precommitted value");
1352 if (keysz(tsz
, ge
->e
->ops
->c
->tagsz
) != tsz
) VALERR("bad tag length");
1354 csz
= ge
->e
->ops
->c
->bufsz
; c
= xmalloc(csz
); buf_init(&b
, c
, csz
);
1355 tag
= bytestring_pywrap(0, tsz
);
1356 err
= GAEAD_DONE(ge
->e
, aad
== Py_None ?
0 : GAEADAAD_A(aad
), &b
,
1357 PyString_AS_STRING(tag
), tsz
);
1358 assert(!err
); (void)err
;
1359 buf_flip(&b
); rc
= Py_BuildValue("NN", bytestring_pywrapbuf(&b
), tag
);
1365 static const PyMethodDef gaeadenc_pymethods
[] = {
1366 #define METHNAME(name) gaeemeth_##name
1367 METH (aad
, "ENC.aad() -> AAD")
1368 KWMETH(reinit
, "ENC.reinit(NONCE, [hsz], [msz], [tsz])")
1369 METH (encrypt
, "ENC.encrypt(MSG) -> CT")
1370 KWMETH(done
, "ENC.done([tsz], [aad]) -> CT, TAG")
1375 static PyObject
*gaeaddec_pywrap(PyObject
*cobj
, gaead_dec
*d
, unsigned f
,
1376 size_t hsz
, size_t csz
, size_t tsz
)
1379 assert(cobj
); Py_INCREF(cobj
);
1380 gd
= PyObject_NEW(gaeaddec_pyobj
, (PyTypeObject
*)cobj
);
1381 gd
->d
= d
; gd
->f
= f
; gd
->hsz
= hsz
; gd
->csz
= csz
; gd
->tsz
= tsz
;
1382 gd
->aad
= 0; gd
->clen
= 0;
1383 return ((PyObject
*)gd
);
1386 static void gaeaddec_pydealloc(PyObject
*me
)
1388 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1390 gaea_sever(&gd
->aad
); GAEAD_DESTROY(GAEADDEC_D(me
));
1391 Py_DECREF(me
->ob_type
); FREEOBJ(me
);
1394 static PyObject
*gaedget_hsz(PyObject
*me
, void *hunoz
)
1396 if (GAEADDEC_F(me
)&AEADF_PCHSZ
) return getulong(GAEADDEC_HSZ(me
));
1400 static PyObject
*gaedget_csz(PyObject
*me
, void *hunoz
)
1402 if (GAEADDEC_F(me
)&AEADF_PCMSZ
) return getulong(GAEADDEC_CSZ(me
));
1406 static PyObject
*gaedget_tsz(PyObject
*me
, void *hunoz
)
1408 if (GAEADDEC_F(me
)&AEADF_PCTSZ
) return getulong(GAEADDEC_TSZ(me
));
1412 static PyObject
*gaedget_clen(PyObject
*me
, void *hunoz
)
1413 { return getulong(GAEADDEC_CLEN(me
)); }
1415 static const PyGetSetDef gaeaddec_pygetset
[] = {
1416 #define GETSETNAME(op, name) gaed##op##_##name
1417 GET (hsz
, "DEC.hsz -> precommitted header length or `None'")
1418 GET (csz
, "DEC.csz -> precommitted ciphertext length or `None'")
1419 GET (tsz
, "DEC.tsz -> precommitted tag length or `None'")
1420 GET (clen
, "DEC.clen -> ciphertext length so far")
1425 static PyObject
*gaedmeth_aad(PyObject
*me
, PyObject
*arg
)
1427 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1429 if (!PyArg_ParseTuple(arg
, ":aad")) return (0);
1430 if (!(gd
->f
&AEADF_AADNDEP
))
1431 return (gaeadaad_pywrap((PyObject
*)GCAEADDEC_KEY(gd
->ob_type
)->aad
,
1432 GAEAD_AAD(gd
->d
), 0, 0));
1435 gd
->aad
= (gaeadaad_pyobj
*)
1436 gaeadaad_pywrap((PyObject
*)GCAEADENC_KEY(gd
->ob_type
)->aad
,
1437 GAEAD_AAD(gd
->d
), gd
->f
&(AEADF_PCHSZ
| AEADF_NOAAD
),
1440 return ((PyObject
*)gd
->aad
);
1444 static PyObject
*gaedmeth_reinit(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1446 static const char *const kwlist
[] = { "nonce", "hsz", "csz", "tsz", 0 };
1447 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1448 char *n
; Py_ssize_t nsz
;
1449 PyObject
*hszobj
= Py_None
, *cszobj
= Py_None
, *tszobj
= Py_None
;
1450 size_t hsz
= 0, csz
= 0, tsz
= 0;
1453 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|OOO:enc", KWLIST
,
1454 &n
, &nsz
, &hszobj
, &cszobj
, &tszobj
))
1456 if (check_aead_encdec(gd
->d
->ops
->c
, &f
, nsz
,
1457 hszobj
, &hsz
, cszobj
, &csz
, tszobj
, &tsz
))
1459 if (GAEAD_REINIT(gd
->d
, n
, nsz
, hsz
, csz
, tsz
))
1460 VALERR("bad aead parameter combination");
1461 gaea_sever(&gd
->aad
);
1462 gd
->f
= f
; gd
->hsz
= hsz
; gd
->csz
= csz
; gd
->tsz
= tsz
;
1467 static PyObject
*gaedmeth_decrypt(PyObject
*me
, PyObject
*arg
)
1469 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1470 char *c
; Py_ssize_t csz
;
1471 char *m
= 0; size_t msz
; buf b
;
1475 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &c
, &csz
)) goto end
;
1476 if (gd
->f
&AEADF_AADFIRST
) {
1477 if ((gd
->f
&AEADF_PCHSZ
) && (gd
->aad ? gd
->aad
->hlen
: 0) != gd
->hsz
)
1478 VALERR("header doesn't match precommitted length");
1479 gaea_invalidate(gd
->aad
);
1481 if ((gd
->f
&AEADF_PCMSZ
) && csz
> gd
->csz
- gd
->clen
)
1482 VALERR("too large for precommitted message length");
1483 msz
= csz
+ gd
->d
->ops
->c
->bufsz
; m
= xmalloc(msz
); buf_init(&b
, m
, msz
);
1484 err
= GAEAD_DECRYPT(gd
->d
, c
, csz
, &b
); assert(!err
); (void)err
;
1485 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
); gd
->clen
+= csz
;
1491 static PyObject
*gaedmeth_done(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
1493 static const char *const kwlist
[] = { "tag", "aad", 0 };
1494 gaeaddec_pyobj
*gd
= (gaeaddec_pyobj
*)me
;
1495 PyObject
*aad
= Py_None
;
1496 char *t
; Py_ssize_t tsz
;
1497 char *m
= 0; size_t msz
; buf b
;
1501 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#|O:done", KWLIST
,
1504 if (aad
!= Py_None
&&
1505 !PyObject_TypeCheck(aad
,
1506 (PyTypeObject
*)GCAEADENC_KEY(me
->ob_type
)->aad
))
1507 TYERR("wanted aad");
1508 if ((gd
->f
&AEADF_AADNDEP
) && aad
!= Py_None
&& aad
!= (PyObject
*)gd
->aad
)
1509 VALERR("mismatched aad");
1510 if ((gd
->f
&AEADF_PCHSZ
) &&
1511 (aad
== Py_None ?
0 : GAEADAAD_HLEN(aad
)) != gd
->hsz
)
1512 VALERR("header doesn't match precommitted length");
1513 if ((gd
->f
&AEADF_PCMSZ
) && gd
->clen
!= gd
->csz
)
1514 VALERR("message doesn't match precommitted length");
1515 if ((gd
->f
&AEADF_PCTSZ
) && tsz
!= gd
->tsz
)
1516 VALERR("tag length doesn't match precommitted value");
1517 if (keysz(tsz
, gd
->d
->ops
->c
->tagsz
) != tsz
) VALERR("bad tag length");
1518 msz
= gd
->d
->ops
->c
->bufsz
; m
= xmalloc(msz
); buf_init(&b
, m
, msz
);
1519 err
= GAEAD_DONE(gd
->d
, aad
== Py_None ?
0 : GAEADAAD_A(aad
), &b
, t
, tsz
);
1521 if (!err
) VALERR("decryption failed");
1522 buf_flip(&b
); rc
= bytestring_pywrapbuf(&b
);
1528 static const PyMethodDef gaeaddec_pymethods
[] = {
1529 #define METHNAME(name) gaedmeth_##name
1530 METH (aad
, "DEC.aad() -> AAD")
1531 KWMETH(reinit
, "DEC.reinit(NONCE, [hsz], [csz], [tsz])")
1532 METH (decrypt
, "DEC.decrypt(CT) -> MSG")
1533 KWMETH(done
, "DEC.done(TAG, [aad]) -> MSG | None")
1538 static PyTypeObject gcaead_pytype_skel
= {
1539 PyObject_HEAD_INIT(0) 0, /* Header */
1540 "GCAEAD", /* @tp_name@ */
1541 sizeof(gcaead_pyobj
), /* @tp_basicsize@ */
1542 0, /* @tp_itemsize@ */
1544 0, /* @tp_dealloc@ */
1546 0, /* @tp_getattr@ */
1547 0, /* @tp_setattr@ */
1548 0, /* @tp_compare@ */
1550 0, /* @tp_as_number@ */
1551 0, /* @tp_as_sequence@ */
1552 0, /* @tp_as_mapping@ */
1556 0, /* @tp_getattro@ */
1557 0, /* @tp_setattro@ */
1558 0, /* @tp_as_buffer@ */
1559 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1560 Py_TPFLAGS_BASETYPE
,
1563 "Authenticated encryption (key) metaclass.",
1565 0, /* @tp_traverse@ */
1567 0, /* @tp_richcompare@ */
1568 0, /* @tp_weaklistoffset@ */
1570 0, /* @tp_iternext@ */
1571 0, /* @tp_methods@ */
1572 0, /* @tp_members@ */
1573 PYGETSET(gcaead
), /* @tp_getset@ */
1576 0, /* @tp_descr_get@ */
1577 0, /* @tp_descr_set@ */
1578 0, /* @tp_dictoffset@ */
1580 PyType_GenericAlloc
, /* @tp_alloc@ */
1581 abstract_pynew
, /* @tp_new@ */
1586 static PyTypeObject gaeadkey_pytype_skel
= {
1587 PyObject_HEAD_INIT(0) 0, /* Header */
1588 "GAEKey", /* @tp_name@ */
1589 sizeof(gaeadkey_pyobj
), /* @tp_basicsize@ */
1590 0, /* @tp_itemsize@ */
1592 gaeadkey_pydealloc
, /* @tp_dealloc@ */
1594 0, /* @tp_getattr@ */
1595 0, /* @tp_setattr@ */
1596 0, /* @tp_compare@ */
1598 0, /* @tp_as_number@ */
1599 0, /* @tp_as_sequence@ */
1600 0, /* @tp_as_mapping@ */
1604 0, /* @tp_getattro@ */
1605 0, /* @tp_setattro@ */
1606 0, /* @tp_as_buffer@ */
1607 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1608 Py_TPFLAGS_BASETYPE
,
1611 "Authenticated encryption key.",
1613 0, /* @tp_traverse@ */
1615 0, /* @tp_richcompare@ */
1616 0, /* @tp_weaklistoffset@ */
1618 0, /* @tp_iternext@ */
1619 PYMETHODS(gaeadkey
), /* @tp_methods@ */
1620 0, /* @tp_members@ */
1621 0, /* @tp_getset@ */
1624 0, /* @tp_descr_get@ */
1625 0, /* @tp_descr_set@ */
1626 0, /* @tp_dictoffset@ */
1628 PyType_GenericAlloc
, /* @tp_alloc@ */
1629 abstract_pynew
, /* @tp_new@ */
1634 static PyTypeObject gcaeadaad_pytype_skel
= {
1635 PyObject_HEAD_INIT(0) 0, /* Header */
1636 "GAEAADClass", /* @tp_name@ */
1637 sizeof(gcaeadaad_pyobj
), /* @tp_basicsize@ */
1638 0, /* @tp_itemsize@ */
1640 0, /* @tp_dealloc@ */
1642 0, /* @tp_getattr@ */
1643 0, /* @tp_setattr@ */
1644 0, /* @tp_compare@ */
1646 0, /* @tp_as_number@ */
1647 0, /* @tp_as_sequence@ */
1648 0, /* @tp_as_mapping@ */
1652 0, /* @tp_getattro@ */
1653 0, /* @tp_setattro@ */
1654 0, /* @tp_as_buffer@ */
1655 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1656 Py_TPFLAGS_BASETYPE
,
1659 "Authenticated encryption additional-data hash metaclass.",
1661 0, /* @tp_traverse@ */
1663 0, /* @tp_richcompare@ */
1664 0, /* @tp_weaklistoffset@ */
1666 0, /* @tp_iternext@ */
1667 0, /* @tp_methods@ */
1668 0, /* @tp_members@ */
1669 0, /* @tp_getset@ */
1672 0, /* @tp_descr_get@ */
1673 0, /* @tp_descr_set@ */
1674 0, /* @tp_dictoffset@ */
1676 PyType_GenericAlloc
, /* @tp_alloc@ */
1677 abstract_pynew
, /* @tp_new@ */
1682 static PyTypeObject gaeadaad_pytype_skel
= {
1683 PyObject_HEAD_INIT(0) 0, /* Header */
1684 "GAEAAD", /* @tp_name@ */
1685 sizeof(gaeadaad_pyobj
), /* @tp_basicsize@ */
1686 0, /* @tp_itemsize@ */
1688 gaeadaad_pydealloc
, /* @tp_dealloc@ */
1690 0, /* @tp_getattr@ */
1691 0, /* @tp_setattr@ */
1692 0, /* @tp_compare@ */
1694 0, /* @tp_as_number@ */
1695 0, /* @tp_as_sequence@ */
1696 0, /* @tp_as_mapping@ */
1700 0, /* @tp_getattro@ */
1701 0, /* @tp_setattro@ */
1702 0, /* @tp_as_buffer@ */
1703 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1704 Py_TPFLAGS_BASETYPE
,
1707 "Authenticated encryption AAD hash.",
1709 0, /* @tp_traverse@ */
1711 0, /* @tp_richcompare@ */
1712 0, /* @tp_weaklistoffset@ */
1714 0, /* @tp_iternext@ */
1715 PYMETHODS(gaeadaad
), /* @tp_methods@ */
1716 0, /* @tp_members@ */
1717 PYGETSET(gaeadaad
), /* @tp_getset@ */
1720 0, /* @tp_descr_get@ */
1721 0, /* @tp_descr_set@ */
1722 0, /* @tp_dictoffset@ */
1724 PyType_GenericAlloc
, /* @tp_alloc@ */
1725 abstract_pynew
, /* @tp_new@ */
1730 static PyTypeObject gcaeadenc_pytype_skel
= {
1731 PyObject_HEAD_INIT(0) 0, /* Header */
1732 "GAEEncClass", /* @tp_name@ */
1733 sizeof(gcaeadenc_pyobj
), /* @tp_basicsize@ */
1734 0, /* @tp_itemsize@ */
1736 0, /* @tp_dealloc@ */
1738 0, /* @tp_getattr@ */
1739 0, /* @tp_setattr@ */
1740 0, /* @tp_compare@ */
1742 0, /* @tp_as_number@ */
1743 0, /* @tp_as_sequence@ */
1744 0, /* @tp_as_mapping@ */
1748 0, /* @tp_getattro@ */
1749 0, /* @tp_setattro@ */
1750 0, /* @tp_as_buffer@ */
1751 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1752 Py_TPFLAGS_BASETYPE
,
1755 "Authenticated encryption operation metaclass.",
1757 0, /* @tp_traverse@ */
1759 0, /* @tp_richcompare@ */
1760 0, /* @tp_weaklistoffset@ */
1762 0, /* @tp_iternext@ */
1763 0, /* @tp_methods@ */
1764 0, /* @tp_members@ */
1765 0, /* @tp_getset@ */
1768 0, /* @tp_descr_get@ */
1769 0, /* @tp_descr_set@ */
1770 0, /* @tp_dictoffset@ */
1772 PyType_GenericAlloc
, /* @tp_alloc@ */
1773 abstract_pynew
, /* @tp_new@ */
1778 static PyTypeObject gaeadenc_pytype_skel
= {
1779 PyObject_HEAD_INIT(0) 0, /* Header */
1780 "GAEEnc", /* @tp_name@ */
1781 sizeof(gaeadenc_pyobj
), /* @tp_basicsize@ */
1782 0, /* @tp_itemsize@ */
1784 gaeadenc_pydealloc
, /* @tp_dealloc@ */
1786 0, /* @tp_getattr@ */
1787 0, /* @tp_setattr@ */
1788 0, /* @tp_compare@ */
1790 0, /* @tp_as_number@ */
1791 0, /* @tp_as_sequence@ */
1792 0, /* @tp_as_mapping@ */
1796 0, /* @tp_getattro@ */
1797 0, /* @tp_setattro@ */
1798 0, /* @tp_as_buffer@ */
1799 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1800 Py_TPFLAGS_BASETYPE
,
1803 "Authenticated encryption operation.",
1805 0, /* @tp_traverse@ */
1807 0, /* @tp_richcompare@ */
1808 0, /* @tp_weaklistoffset@ */
1810 0, /* @tp_iternext@ */
1811 PYMETHODS(gaeadenc
), /* @tp_methods@ */
1812 0, /* @tp_members@ */
1813 PYGETSET(gaeadenc
), /* @tp_getset@ */
1816 0, /* @tp_descr_get@ */
1817 0, /* @tp_descr_set@ */
1818 0, /* @tp_dictoffset@ */
1820 PyType_GenericAlloc
, /* @tp_alloc@ */
1821 abstract_pynew
, /* @tp_new@ */
1826 static PyTypeObject gcaeaddec_pytype_skel
= {
1827 PyObject_HEAD_INIT(0) 0, /* Header */
1828 "GAEDecClass", /* @tp_name@ */
1829 sizeof(gcaeaddec_pyobj
), /* @tp_basicsize@ */
1830 0, /* @tp_itemsize@ */
1832 0, /* @tp_dealloc@ */
1834 0, /* @tp_getattr@ */
1835 0, /* @tp_setattr@ */
1836 0, /* @tp_compare@ */
1838 0, /* @tp_as_number@ */
1839 0, /* @tp_as_sequence@ */
1840 0, /* @tp_as_mapping@ */
1844 0, /* @tp_getattro@ */
1845 0, /* @tp_setattro@ */
1846 0, /* @tp_as_buffer@ */
1847 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1848 Py_TPFLAGS_BASETYPE
,
1851 "Authenticated decryption operation metaclass.",
1853 0, /* @tp_traverse@ */
1855 0, /* @tp_richcompare@ */
1856 0, /* @tp_weaklistoffset@ */
1858 0, /* @tp_iternext@ */
1859 0, /* @tp_methods@ */
1860 0, /* @tp_members@ */
1861 0, /* @tp_getset@ */
1864 0, /* @tp_descr_get@ */
1865 0, /* @tp_descr_set@ */
1866 0, /* @tp_dictoffset@ */
1868 PyType_GenericAlloc
, /* @tp_alloc@ */
1869 abstract_pynew
, /* @tp_new@ */
1874 static PyTypeObject gaeaddec_pytype_skel
= {
1875 PyObject_HEAD_INIT(0) 0, /* Header */
1876 "GAEDec", /* @tp_name@ */
1877 sizeof(gaeaddec_pyobj
), /* @tp_basicsize@ */
1878 0, /* @tp_itemsize@ */
1880 gaeaddec_pydealloc
, /* @tp_dealloc@ */
1882 0, /* @tp_getattr@ */
1883 0, /* @tp_setattr@ */
1884 0, /* @tp_compare@ */
1886 0, /* @tp_as_number@ */
1887 0, /* @tp_as_sequence@ */
1888 0, /* @tp_as_mapping@ */
1892 0, /* @tp_getattro@ */
1893 0, /* @tp_setattro@ */
1894 0, /* @tp_as_buffer@ */
1895 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1896 Py_TPFLAGS_BASETYPE
,
1899 "Authenticated decryption operation.",
1901 0, /* @tp_traverse@ */
1903 0, /* @tp_richcompare@ */
1904 0, /* @tp_weaklistoffset@ */
1906 0, /* @tp_iternext@ */
1907 PYMETHODS(gaeaddec
), /* @tp_methods@ */
1908 0, /* @tp_members@ */
1909 PYGETSET(gaeaddec
), /* @tp_getset@ */
1912 0, /* @tp_descr_get@ */
1913 0, /* @tp_descr_set@ */
1914 0, /* @tp_dictoffset@ */
1916 PyType_GenericAlloc
, /* @tp_alloc@ */
1917 abstract_pynew
, /* @tp_new@ */
1922 /*----- Hash functions ----------------------------------------------------*/
1924 PyTypeObject
*gchash_pytype
;
1925 static PyTypeObject
*ghash_pytype
;
1926 PyObject
*sha_pyobj
, *has160_pyobj
;
1928 typedef struct ghash_pyobj
{
1933 #define GHASH_PYCHECK(o) PyObject_TypeCheck((o), ghash_pytype)
1934 #define GHASH_H(o) (((ghash_pyobj *)(o))->h)
1936 CONVFUNC(gchash
, gchash
*, GCHASH_CH
)
1937 CONVFUNC(ghash
, ghash
*, GHASH_H
)
1939 static PyObject
*ghash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
1941 static const char *const kwlist
[] = { 0 };
1942 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", KWLIST
))
1944 return (ghash_pywrap((PyObject
*)ty
, GH_INIT(GCHASH_CH(ty
))));
1949 static PyObject
*gchash_pywrap(gchash
*ch
)
1951 gchash_pyobj
*g
= newtype(gchash_pytype
, 0, ch
->name
);
1953 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
1954 g
->ty
.ht_type
.tp_base
= ghash_pytype
;
1955 Py_INCREF(ghash_pytype
);
1956 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
1957 Py_TPFLAGS_BASETYPE
|
1958 Py_TPFLAGS_HEAPTYPE
);
1959 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
1960 g
->ty
.ht_type
.tp_free
= 0;
1961 g
->ty
.ht_type
.tp_new
= ghash_pynew
;
1962 typeready(&g
->ty
.ht_type
);
1963 return ((PyObject
*)g
);
1966 PyObject
*ghash_pywrap(PyObject
*cobj
, ghash
*h
)
1969 if (!cobj
) cobj
= gchash_pywrap((/*unconst*/ gchash
*)GH_CLASS(h
));
1970 else Py_INCREF(cobj
);
1971 g
= PyObject_NEW(ghash_pyobj
, (PyTypeObject
*)cobj
);
1973 return ((PyObject
*)g
);
1976 static void ghash_pydealloc(PyObject
*me
)
1978 GH_DESTROY(GHASH_H(me
));
1979 Py_DECREF(me
->ob_type
);
1983 static PyObject
*gchget_name(PyObject
*me
, void *hunoz
)
1984 { return (PyString_FromString(GCHASH_CH(me
)->name
)); }
1986 static PyObject
*gchget_hashsz(PyObject
*me
, void *hunoz
)
1987 { return (PyInt_FromLong(GCHASH_CH(me
)->hashsz
)); }
1989 static PyObject
*gchget_bufsz(PyObject
*me
, void *hunoz
)
1990 { return (PyInt_FromLong(GCHASH_CH(me
)->bufsz
)); }
1992 static PyObject
*ghmeth_copy(PyObject
*me
, PyObject
*arg
)
1994 if (!PyArg_ParseTuple(arg
, ":copy")) return (0);
1995 return (ghash_pywrap((PyObject
*)me
->ob_type
, GH_COPY(GHASH_H(me
))));
1998 static PyObject
*ghmeth_hash(PyObject
*me
, PyObject
*arg
)
2002 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
2003 GH_HASH(GHASH_H(me
), p
, sz
);
2007 #define GHMETH_HASHU_(n, W, w) \
2008 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
2011 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
2012 GH_HASHU##W(GHASH_H(me), x); \
2015 DOUINTCONV(GHMETH_HASHU_
)
2017 #define GHMETH_HASHBUF_(n, W, w) \
2018 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
2022 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
2023 if (sz > MASK##n) TYERR("string too long"); \
2024 GH_HASHBUF##W(GHASH_H(me), p, sz); \
2029 DOUINTCONV(GHMETH_HASHBUF_
)
2031 static PyObject
*ghmeth_hashstrz(PyObject
*me
, PyObject
*arg
)
2034 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
2035 GH_HASHSTRZ(GHASH_H(me
), p
);
2039 static PyObject
*ghmeth_done(PyObject
*me
, PyObject
*arg
)
2043 if (!PyArg_ParseTuple(arg
, ":done")) return (0);
2044 g
= GH_COPY(GHASH_H(me
));
2045 rc
= bytestring_pywrap(0, g
->ops
->c
->hashsz
);
2046 GH_DONE(g
, PyString_AS_STRING(rc
));
2051 static const PyGetSetDef gchash_pygetset
[] = {
2052 #define GETSETNAME(op, name) gch##op##_##name
2053 GET (bufsz
, "CH.bufsz -> hash buffer size, or zero")
2054 GET (hashsz
, "CH.hashsz -> hash output size")
2055 GET (name
, "CH.name -> name of this kind of hash")
2060 static const PyMethodDef ghash_pymethods
[] = {
2061 #define METHNAME(name) ghmeth_##name
2062 METH (copy
, "H.copy() -> HH")
2063 METH (hash
, "H.hash(M)")
2064 #define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
2067 #define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
2068 DOUINTCONV(METHBUF_
)
2070 METH (hashstrz
, "H.hashstrz(STRING)")
2071 METH (done
, "H.done() -> HASH")
2076 static PyTypeObject gchash_pytype_skel
= {
2077 PyObject_HEAD_INIT(0) 0, /* Header */
2078 "GCHash", /* @tp_name@ */
2079 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
2080 0, /* @tp_itemsize@ */
2082 0, /* @tp_dealloc@ */
2084 0, /* @tp_getattr@ */
2085 0, /* @tp_setattr@ */
2086 0, /* @tp_compare@ */
2088 0, /* @tp_as_number@ */
2089 0, /* @tp_as_sequence@ */
2090 0, /* @tp_as_mapping@ */
2094 0, /* @tp_getattro@ */
2095 0, /* @tp_setattro@ */
2096 0, /* @tp_as_buffer@ */
2097 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2098 Py_TPFLAGS_BASETYPE
,
2101 "Hash function metaclass.",
2103 0, /* @tp_traverse@ */
2105 0, /* @tp_richcompare@ */
2106 0, /* @tp_weaklistoffset@ */
2108 0, /* @tp_iternext@ */
2109 0, /* @tp_methods@ */
2110 0, /* @tp_members@ */
2111 PYGETSET(gchash
), /* @tp_getset@ */
2114 0, /* @tp_descr_get@ */
2115 0, /* @tp_descr_set@ */
2116 0, /* @tp_dictoffset@ */
2118 PyType_GenericAlloc
, /* @tp_alloc@ */
2119 abstract_pynew
, /* @tp_new@ */
2124 static PyTypeObject ghash_pytype_skel
= {
2125 PyObject_HEAD_INIT(0) 0, /* Header */
2126 "GHash", /* @tp_name@ */
2127 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
2128 0, /* @tp_itemsize@ */
2130 ghash_pydealloc
, /* @tp_dealloc@ */
2132 0, /* @tp_getattr@ */
2133 0, /* @tp_setattr@ */
2134 0, /* @tp_compare@ */
2136 0, /* @tp_as_number@ */
2137 0, /* @tp_as_sequence@ */
2138 0, /* @tp_as_mapping@ */
2142 0, /* @tp_getattro@ */
2143 0, /* @tp_setattro@ */
2144 0, /* @tp_as_buffer@ */
2145 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2146 Py_TPFLAGS_BASETYPE
,
2149 "Hash function, abstract base class.",
2151 0, /* @tp_traverse@ */
2153 0, /* @tp_richcompare@ */
2154 0, /* @tp_weaklistoffset@ */
2156 0, /* @tp_iternext@ */
2157 PYMETHODS(ghash
), /* @tp_methods@ */
2158 0, /* @tp_members@ */
2159 0, /* @tp_getset@ */
2162 0, /* @tp_descr_get@ */
2163 0, /* @tp_descr_set@ */
2164 0, /* @tp_dictoffset@ */
2166 PyType_GenericAlloc
, /* @tp_alloc@ */
2167 abstract_pynew
, /* @tp_new@ */
2172 /*----- Message authentication --------------------------------------------*/
2174 static PyTypeObject
*gcmac_pytype
, *gmac_pytype
, *gmhash_pytype
;
2176 typedef struct gcmac_pyobj
{
2177 PyHeapTypeObject ty
;
2181 #define GCMAC_PYCHECK(o) PyObject_TypeCheck((o), gcmac_pytype)
2182 #define GCMAC_CM(o) (((gcmac_pyobj *)(o))->cm)
2183 #define GCMAC_F(o) (((gcmac_pyobj *)(o))->f)
2184 CONVFUNC(gcmac
, gcmac
*, GCMAC_CM
)
2185 static PyObject
*gmac_pywrap(PyObject
*, gmac
*);
2187 typedef struct gmac_pyobj
{
2188 PyHeapTypeObject ty
;
2192 extern PyTypeObject
*gmac_pytype
;
2193 #define GMAC_PYCHECK(o) PyObject_TypeCheck((o), gmac_pytype)
2194 #define GMAC_M(o) (((gmac_pyobj *)(o))->m)
2195 #define GMAC_F(o) (((gmac_pyobj *)(o))->f)
2196 extern PyObject
*gmac_pywrap(PyObject
*, gmac
*);
2197 extern int convgmac(PyObject
*, void *);
2199 static PyObject
*gmac_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2201 static const char *const kwlist
[] = { "k", 0 };
2205 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
2207 if (keysz(sz
, GCMAC_CM(ty
)->keysz
) != sz
) VALERR("bad key length");
2208 return (gmac_pywrap((PyObject
*)ty
,
2209 GM_KEY(GCMAC_CM(ty
), k
, sz
)));
2214 static PyObject
*gmhash_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2216 static const char *const kwlist
[] = { 0 };
2219 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, ":new", KWLIST
)) return (0);
2220 g
= PyObject_NEW(ghash_pyobj
, ty
);
2221 g
->h
= GM_INIT(GMAC_M(ty
));
2223 return ((PyObject
*)g
);
2226 static PyObject
*gcmac_pywrap(gcmac
*cm
)
2228 gcmac_pyobj
*g
= newtype(gcmac_pytype
, 0, cm
->name
);
2230 g
->ty
.ht_type
.tp_basicsize
= sizeof(gmac_pyobj
);
2231 g
->ty
.ht_type
.tp_base
= gmac_pytype
;
2232 Py_INCREF(gmac_pytype
);
2233 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2234 Py_TPFLAGS_BASETYPE
|
2235 Py_TPFLAGS_HEAPTYPE
);
2236 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2237 g
->ty
.ht_type
.tp_free
= 0;
2238 g
->ty
.ht_type
.tp_new
= gmac_pynew
;
2239 typeready(&g
->ty
.ht_type
);
2240 return ((PyObject
*)g
);
2243 static PyObject
*gmac_pywrap(PyObject
*cobj
, gmac
*m
)
2246 if (!cobj
) cobj
= gcmac_pywrap((/*unconst*/ gcmac
*)GM_CLASS(m
));
2247 else Py_INCREF(cobj
);
2248 g
= newtype((PyTypeObject
*)cobj
, 0, 0);
2249 g
->ty
.ht_type
.tp_basicsize
= sizeof(ghash_pyobj
);
2250 g
->ty
.ht_name
= PyString_FromFormat("%s(keyed)", m
->ops
->c
->name
);
2251 g
->ty
.ht_type
.tp_name
= PyString_AS_STRING(g
->ty
.ht_name
);
2252 g
->ty
.ht_type
.tp_base
= gmhash_pytype
;
2253 Py_INCREF(gmac_pytype
);
2254 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2255 Py_TPFLAGS_BASETYPE
|
2256 Py_TPFLAGS_HEAPTYPE
);
2257 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2258 g
->ty
.ht_type
.tp_free
= 0;
2259 g
->ty
.ht_type
.tp_new
= gmhash_pynew
;
2260 typeready(&g
->ty
.ht_type
);
2262 return ((PyObject
*)g
);
2265 static void gmac_pydealloc(PyObject
*me
)
2267 GM_DESTROY(GMAC_M(me
));
2268 Py_DECREF(me
->ob_type
);
2269 PyType_Type
.tp_dealloc(me
);
2272 static PyObject
*gcmget_name(PyObject
*me
, void *hunoz
)
2273 { return (PyString_FromString(GCMAC_CM(me
)->name
)); }
2275 static PyObject
*gcmget_keysz(PyObject
*me
, void *hunoz
)
2276 { return (keysz_pywrap(GCMAC_CM(me
)->keysz
)); }
2278 static PyObject
*gcmget_tagsz(PyObject
*me
, void *hunoz
)
2279 { return (PyInt_FromLong(GCMAC_CM(me
)->hashsz
)); }
2281 static const PyGetSetDef gcmac_pygetset
[] = {
2282 #define GETSETNAME(op, name) gcm##op##_##name
2283 GET (keysz
, "CM.keysz -> acceptable key sizes")
2284 GET (tagsz
, "CM.tagsz -> MAC output size")
2285 GET (name
, "CM.name -> name of this kind of MAC")
2290 static PyTypeObject gcmac_pytype_skel
= {
2291 PyObject_HEAD_INIT(0) 0, /* Header */
2292 "GCMAC", /* @tp_name@ */
2293 sizeof(gchash_pyobj
), /* @tp_basicsize@ */
2294 0, /* @tp_itemsize@ */
2296 0, /* @tp_dealloc@ */
2298 0, /* @tp_getattr@ */
2299 0, /* @tp_setattr@ */
2300 0, /* @tp_compare@ */
2302 0, /* @tp_as_number@ */
2303 0, /* @tp_as_sequence@ */
2304 0, /* @tp_as_mapping@ */
2308 0, /* @tp_getattro@ */
2309 0, /* @tp_setattro@ */
2310 0, /* @tp_as_buffer@ */
2311 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2312 Py_TPFLAGS_BASETYPE
,
2315 "Message authentication code metametaclass.",
2317 0, /* @tp_traverse@ */
2319 0, /* @tp_richcompare@ */
2320 0, /* @tp_weaklistoffset@ */
2322 0, /* @tp_iternext@ */
2323 0, /* @tp_methods@ */
2324 0, /* @tp_members@ */
2325 PYGETSET(gcmac
), /* @tp_getset@ */
2328 0, /* @tp_descr_get@ */
2329 0, /* @tp_descr_set@ */
2330 0, /* @tp_dictoffset@ */
2332 PyType_GenericAlloc
, /* @tp_alloc@ */
2333 abstract_pynew
, /* @tp_new@ */
2338 static PyTypeObject gmac_pytype_skel
= {
2339 PyObject_HEAD_INIT(0) 0, /* Header */
2340 "GMAC", /* @tp_name@ */
2341 sizeof(gmac_pyobj
), /* @tp_basicsize@ */
2342 0, /* @tp_itemsize@ */
2344 gmac_pydealloc
, /* @tp_dealloc@ */
2346 0, /* @tp_getattr@ */
2347 0, /* @tp_setattr@ */
2348 0, /* @tp_compare@ */
2350 0, /* @tp_as_number@ */
2351 0, /* @tp_as_sequence@ */
2352 0, /* @tp_as_mapping@ */
2356 0, /* @tp_getattro@ */
2357 0, /* @tp_setattro@ */
2358 0, /* @tp_as_buffer@ */
2359 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2360 Py_TPFLAGS_BASETYPE
,
2363 "Message authentication code metaclass, abstract base class.",
2365 0, /* @tp_traverse@ */
2367 0, /* @tp_richcompare@ */
2368 0, /* @tp_weaklistoffset@ */
2370 0, /* @tp_iternext@ */
2371 0, /* @tp_methods@ */
2372 0, /* @tp_members@ */
2373 0, /* @tp_getset@ */
2376 0, /* @tp_descr_get@ */
2377 0, /* @tp_descr_set@ */
2378 0, /* @tp_dictoffset@ */
2380 PyType_GenericAlloc
, /* @tp_alloc@ */
2381 abstract_pynew
, /* @tp_new@ */
2386 static PyTypeObject gmhash_pytype_skel
= {
2387 PyObject_HEAD_INIT(0) 0, /* Header */
2388 "GMACHash", /* @tp_name@ */
2389 sizeof(ghash_pyobj
), /* @tp_basicsize@ */
2390 0, /* @tp_itemsize@ */
2392 ghash_pydealloc
, /* @tp_dealloc@ */
2394 0, /* @tp_getattr@ */
2395 0, /* @tp_setattr@ */
2396 0, /* @tp_compare@ */
2398 0, /* @tp_as_number@ */
2399 0, /* @tp_as_sequence@ */
2400 0, /* @tp_as_mapping@ */
2404 0, /* @tp_getattro@ */
2405 0, /* @tp_setattro@ */
2406 0, /* @tp_as_buffer@ */
2407 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2408 Py_TPFLAGS_BASETYPE
,
2411 "Message authentication code, abstract base class.",
2413 0, /* @tp_traverse@ */
2415 0, /* @tp_richcompare@ */
2416 0, /* @tp_weaklistoffset@ */
2418 0, /* @tp_iternext@ */
2419 0, /* @tp_methods@ */
2420 0, /* @tp_members@ */
2421 0, /* @tp_getset@ */
2424 0, /* @tp_descr_get@ */
2425 0, /* @tp_descr_set@ */
2426 0, /* @tp_dictoffset@ */
2428 PyType_GenericAlloc
, /* @tp_alloc@ */
2429 abstract_pynew
, /* @tp_new@ */
2434 /*----- Special snowflake for Poly1305 ------------------------------------*/
2436 PyTypeObject
*poly1305cls_pytype
, *poly1305key_pytype
, *poly1305hash_pytype
;
2438 typedef struct poly1305key_pyobj
{
2439 PyHeapTypeObject ty
;
2441 } poly1305key_pyobj
;
2443 typedef struct poly1305hash_pyobj
{
2448 } poly1305hash_pyobj
;
2450 #define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
2451 #define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
2452 CONVFUNC(poly1305hash
, poly1305_ctx
*, P1305_CTX
)
2454 static PyObject
*poly1305hash_pynew(PyTypeObject
*ty
,
2455 PyObject
*arg
, PyObject
*kw
)
2457 static const char *const kwlist
[] = { "mask", 0 };
2458 poly1305key_pyobj
*pk
= (poly1305key_pyobj
*)ty
;
2459 poly1305hash_pyobj
*ph
;
2463 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|s#:new", KWLIST
, &m
, &sz
))
2465 if (m
&& sz
!= POLY1305_MASKSZ
) VALERR("bad mask length");
2466 ph
= PyObject_NEW(poly1305hash_pyobj
, ty
);
2468 if (m
) ph
->f
|= f_mask
;
2469 poly1305_macinit(&ph
->ctx
, &pk
->k
, m
);
2471 return ((PyObject
*)ph
);
2476 static PyObject
*poly1305key_pynew(PyTypeObject
*ty
,
2477 PyObject
*arg
, PyObject
*kw
)
2479 static const char *const kwlist
[] = { "k", 0 };
2480 poly1305key_pyobj
*pk
;
2484 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
2486 if (keysz(sz
, poly1305_keysz
) != sz
) VALERR("bad key length");
2488 pk
= newtype(ty
, 0, 0);
2489 pk
->ty
.ht_name
= PyString_FromString("poly1305(keyed)");
2490 pk
->ty
.ht_type
.tp_basicsize
= sizeof(poly1305hash_pyobj
);
2491 pk
->ty
.ht_type
.tp_name
= PyString_AS_STRING(pk
->ty
.ht_name
);
2492 pk
->ty
.ht_type
.tp_base
= poly1305hash_pytype
;
2493 Py_INCREF(poly1305key_pytype
);
2494 pk
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
2495 Py_TPFLAGS_BASETYPE
|
2496 Py_TPFLAGS_HEAPTYPE
);
2497 pk
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
2498 pk
->ty
.ht_type
.tp_free
= 0;
2499 pk
->ty
.ht_type
.tp_new
= poly1305hash_pynew
;
2500 typeready(&pk
->ty
.ht_type
);
2502 poly1305_keyinit(&pk
->k
, k
, sz
);
2503 return ((PyObject
*)pk
);
2509 static PyObject
*poly1305clsget_name(PyObject
*me
, void *hunoz
)
2510 { return (PyString_FromString("poly1305")); }
2512 static PyObject
*poly1305clsget_keysz(PyObject
*me
, void *hunoz
)
2513 { return (keysz_pywrap(poly1305_keysz
)); }
2515 static PyObject
*poly1305clsget_masksz(PyObject
*me
, void *hunoz
)
2516 { return (PyInt_FromLong(POLY1305_MASKSZ
)); }
2518 static PyObject
*poly1305clsget_tagsz(PyObject
*me
, void *hunoz
)
2519 { return (PyInt_FromLong(POLY1305_TAGSZ
)); }
2521 static PyObject
*polymeth_copy(PyObject
*me
, PyObject
*arg
)
2523 poly1305hash_pyobj
*ph
;
2524 if (!PyArg_ParseTuple(arg
, ":copy")) return (0);
2525 ph
= PyObject_NEW(poly1305hash_pyobj
, me
->ob_type
);
2526 poly1305_copy(&ph
->ctx
, P1305_CTX(me
));
2527 Py_INCREF(me
->ob_type
);
2528 return ((PyObject
*)ph
);
2531 static PyObject
*polymeth_hash(PyObject
*me
, PyObject
*arg
)
2535 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
2536 poly1305_hash(P1305_CTX(me
), p
, sz
);
2540 #define POLYMETH_HASHU_(n, W, w) \
2541 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
2545 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
2546 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2549 DOUINTCONV(POLYMETH_HASHU_
)
2551 #define POLYMETH_HASHBUF_(n, W, w) \
2552 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
2557 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
2558 if (sz > MASK##n) TYERR("string too long"); \
2559 STORE##W(b, sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2560 poly1305_hash(P1305_CTX(me), p, sz); \
2565 DOUINTCONV(POLYMETH_HASHBUF_
)
2567 static PyObject
*polymeth_hashstrz(PyObject
*me
, PyObject
*arg
)
2570 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
2571 poly1305_hash(P1305_CTX(me
), p
, strlen(p
) + 1);
2575 static PyObject
*polymeth_flush(PyObject
*me
, PyObject
*arg
)
2577 if (!PyArg_ParseTuple(arg
, ":flush")) return (0);
2578 poly1305_flush(P1305_CTX(me
));
2582 static PyObject
*polymeth_flushzero(PyObject
*me
, PyObject
*arg
)
2584 if (!PyArg_ParseTuple(arg
, ":flushzero")) return (0);
2585 poly1305_flushzero(P1305_CTX(me
));
2589 static PyObject
*polymeth_concat(PyObject
*me
, PyObject
*arg
)
2591 PyObject
*pre
, *suff
;
2592 if (!PyArg_ParseTuple(arg
, "OO:concat", &pre
, &suff
)) return (0);
2593 if (!PyObject_TypeCheck(pre
, poly1305hash_pytype
) ||
2594 !PyObject_TypeCheck(suff
, poly1305hash_pytype
))
2595 TYERR("wanted a poly1305hash");
2596 if (me
->ob_type
!= pre
->ob_type
|| me
->ob_type
!= suff
->ob_type
)
2597 TYERR("key mismatch");
2598 if (P1305_CTX(pre
)->nbuf
) VALERR("prefix is not block-aligned");
2599 poly1305_concat(P1305_CTX(me
), P1305_CTX(pre
), P1305_CTX(suff
));
2605 static PyObject
*polymeth_done(PyObject
*me
, PyObject
*arg
)
2608 if (!PyArg_ParseTuple(arg
, ":done")) return (0);
2609 if (!(P1305_F(me
) & f_mask
)) VALERR("no mask");
2610 rc
= bytestring_pywrap(0, POLY1305_TAGSZ
);
2611 poly1305_done(P1305_CTX(me
), PyString_AS_STRING(rc
));
2617 static const PyGetSetDef poly1305cls_pygetset
[] = {
2618 #define GETSETNAME(op, name) poly1305cls##op##_##name
2619 GET (keysz
, "PC.keysz -> acceptable key sizes")
2620 GET (masksz
, "PC.masksz -> mask size")
2621 GET (tagsz
, "PC.tagsz -> MAC output size")
2622 GET (name
, "PC.name -> name of this kind of MAC")
2627 static const PyMethodDef poly1305hash_pymethods
[] = {
2628 #define METHNAME(name) polymeth_##name
2629 METH (copy
, "P.copy() -> PP")
2630 METH (hash
, "P.hash(M)")
2631 #define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
2634 #define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
2635 DOUINTCONV(METHBUF_
)
2637 METH (hashstrz
, "P.hashstrz(STRING)")
2638 METH (flush
, "P.flush()")
2639 METH (flushzero
, "P.flushzero()")
2640 METH (concat
, "P.concat(PREFIX, SUFFIX)")
2641 METH (done
, "P.done() -> TAG")
2646 static PyTypeObject poly1305cls_pytype_skel
= {
2647 PyObject_HEAD_INIT(0) 0, /* Header */
2648 "Poly1305Class", /* @tp_name@ */
2649 sizeof(PyHeapTypeObject
), /* @tp_basicsize@ */
2650 0, /* @tp_itemsize@ */
2652 0, /* @tp_dealloc@ */
2654 0, /* @tp_getattr@ */
2655 0, /* @tp_setattr@ */
2656 0, /* @tp_compare@ */
2658 0, /* @tp_as_number@ */
2659 0, /* @tp_as_sequence@ */
2660 0, /* @tp_as_mapping@ */
2664 0, /* @tp_getattro@ */
2665 0, /* @tp_setattro@ */
2666 0, /* @tp_as_buffer@ */
2667 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2668 Py_TPFLAGS_BASETYPE
,
2671 "Poly1305 metametaclass. Best not to ask.",
2673 0, /* @tp_traverse@ */
2675 0, /* @tp_richcompare@ */
2676 0, /* @tp_weaklistoffset@ */
2678 0, /* @tp_iternext@ */
2679 0, /* @tp_methods@ */
2680 0, /* @tp_members@ */
2681 PYGETSET(poly1305cls
), /* @tp_getset@ */
2684 0, /* @tp_descr_get@ */
2685 0, /* @tp_descr_set@ */
2686 0, /* @tp_dictoffset@ */
2688 PyType_GenericAlloc
, /* @tp_alloc@ */
2689 abstract_pynew
, /* @tp_new@ */
2694 static PyTypeObject poly1305key_pytype_skel
= {
2695 PyObject_HEAD_INIT(0) 0, /* Header */
2696 "poly1305", /* @tp_name@ */
2697 sizeof(poly1305key_pyobj
), /* @tp_basicsize@ */
2698 0, /* @tp_itemsize@ */
2700 0, /* @tp_dealloc@ */
2702 0, /* @tp_getattr@ */
2703 0, /* @tp_setattr@ */
2704 0, /* @tp_compare@ */
2706 0, /* @tp_as_number@ */
2707 0, /* @tp_as_sequence@ */
2708 0, /* @tp_as_mapping@ */
2712 0, /* @tp_getattro@ */
2713 0, /* @tp_setattro@ */
2714 0, /* @tp_as_buffer@ */
2715 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2716 Py_TPFLAGS_BASETYPE
,
2719 "poly1305(K): Poly1305 key.",
2721 0, /* @tp_traverse@ */
2723 0, /* @tp_richcompare@ */
2724 0, /* @tp_weaklistoffset@ */
2726 0, /* @tp_iternext@ */
2727 0, /* @tp_methods@ */
2728 0, /* @tp_members@ */
2729 0, /* @tp_getset@ */
2732 0, /* @tp_descr_get@ */
2733 0, /* @tp_descr_set@ */
2734 0, /* @tp_dictoffset@ */
2736 PyType_GenericAlloc
, /* @tp_alloc@ */
2737 poly1305key_pynew
, /* @tp_new@ */
2742 static PyTypeObject poly1305hash_pytype_skel
= {
2743 PyObject_HEAD_INIT(0) 0, /* Header */
2744 "Poly1305Hash", /* @tp_name@ */
2745 sizeof(poly1305hash_pyobj
), /* @tp_basicsize@ */
2746 0, /* @tp_itemsize@ */
2748 0, /* @tp_dealloc@ */
2750 0, /* @tp_getattr@ */
2751 0, /* @tp_setattr@ */
2752 0, /* @tp_compare@ */
2754 0, /* @tp_as_number@ */
2755 0, /* @tp_as_sequence@ */
2756 0, /* @tp_as_mapping@ */
2760 0, /* @tp_getattro@ */
2761 0, /* @tp_setattro@ */
2762 0, /* @tp_as_buffer@ */
2763 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2764 Py_TPFLAGS_BASETYPE
,
2767 "Poly1305 MAC context base class.",
2769 0, /* @tp_traverse@ */
2771 0, /* @tp_richcompare@ */
2772 0, /* @tp_weaklistoffset@ */
2774 0, /* @tp_iternext@ */
2775 PYMETHODS(poly1305hash
), /* @tp_methods@ */
2776 0, /* @tp_members@ */
2777 0, /* @tp_getset@ */
2780 0, /* @tp_descr_get@ */
2781 0, /* @tp_descr_set@ */
2782 0, /* @tp_dictoffset@ */
2784 PyType_GenericAlloc
, /* @tp_alloc@ */
2785 abstract_pynew
, /* @tp_new@ */
2790 /*----- Special snowflake for HSalsa and HChaCha --------------------------*/
2792 #define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
2793 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
2795 dance##_ctx dance; \
2797 Py_ssize_t ksz, nsz; \
2799 if (!PyArg_ParseTuple(arg, "s#s#:" #hdance "_prf", \
2800 &k, &ksz, &n, &nsz)) \
2802 if (ksz != keysz(ksz, dance##_keysz)) VALERR("bad key length"); \
2803 if (nsz != HDANCE##_INSZ) VALERR("bad input length"); \
2804 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
2805 dance##_init(&dance, k, ksz, 0); \
2806 hdance##_prf(&dance, n, PyString_AS_STRING(rc)); \
2812 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa20
)
2813 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa2012
)
2814 DEF_HDANCE(SALSA20
, HSALSA20
, salsa20
, hsalsa208
)
2816 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha20
)
2817 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha12
)
2818 DEF_HDANCE(CHACHA
, HCHACHA
, chacha
, hchacha8
)
2820 /*----- Keccak-p[1600, n] -------------------------------------------------*/
2822 static PyTypeObject
*kxvik_pytype
;
2824 typedef struct kxvik_pyobj
{
2830 static PyObject
*kxvik_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
2833 kxvik_pyobj
*rc
= 0;
2834 static const char *const kwlist
[] = { "nround", 0 };
2835 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:new", KWLIST
,
2838 rc
= (kxvik_pyobj
*)ty
->tp_alloc(ty
, 0);
2840 keccak1600_init(&rc
->s
);
2842 return ((PyObject
*)rc
);
2845 static PyObject
*kxvikmeth_copy(PyObject
*me
, PyObject
*arg
)
2847 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
, *rc
= 0;
2848 if (!PyArg_ParseTuple(arg
, ":copy")) goto end
;
2849 rc
= (kxvik_pyobj
*)k
->ob_type
->tp_alloc(k
->ob_type
, 0);
2850 rc
->s
= k
->s
; rc
->n
= k
->n
;
2852 return ((PyObject
*)rc
);
2855 static PyObject
*kxvikmeth_mix(PyObject
*me
, PyObject
*arg
)
2857 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2862 char *p
; Py_ssize_t n
;
2864 if (!PyArg_ParseTuple(arg
, "s#:mix", &p
, &n
)) goto end
;
2865 if (n
> 200) VALERR("out of range");
2866 q
= (const octet
*)p
;
2868 while (n
> 8) { LOAD64_L_(t
[i
], q
); i
++; q
+= 8; n
-= 8; }
2870 memcpy(buf
, q
, n
); memset(buf
+ n
, 0, 8 - n
);
2871 LOAD64_L_(t
[i
], buf
); i
++;
2873 keccak1600_mix(&k
->s
, t
, i
);
2879 static PyObject
*kxvikmeth_extract(PyObject
*me
, PyObject
*arg
)
2881 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2888 if (!PyArg_ParseTuple(arg
, "O&:extract", convuint
, &n
)) goto end
;
2889 if (n
> 200) VALERR("out of range");
2890 rc
= bytestring_pywrap(0, n
);
2891 q
= (octet
*)PyString_AS_STRING(rc
);
2892 keccak1600_extract(&k
->s
, t
, (n
+ 7)/8);
2894 while (n
> 8) { STORE64_L_(q
, t
[i
]); i
++; q
+= 8; n
-= 8; }
2895 if (n
) { STORE64_L_(buf
, t
[i
]); memcpy(q
, buf
, n
); }
2900 static PyObject
*kxvikmeth_step(PyObject
*me
, PyObject
*arg
)
2902 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2903 if (!PyArg_ParseTuple(arg
, ":step")) return (0);
2904 keccak1600_p(&k
->s
, &k
->s
, k
->n
);
2908 static PyObject
*kxvikget_nround(PyObject
*me
, void *hunoz
)
2910 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2911 return (PyInt_FromLong(k
->n
));
2914 static int kxvikset_nround(PyObject
*me
, PyObject
*val
, void *hunoz
)
2916 kxvik_pyobj
*k
= (kxvik_pyobj
*)me
;
2920 if (!val
) NIERR("__del__");
2921 if (!convuint(val
, &n
)) goto end
;
2928 static const PyGetSetDef kxvik_pygetset
[] = {
2929 #define GETSETNAME(op, name) kxvik##op##_##name
2930 GETSET(nround
, "KECCAK.nround -> number of rounds")
2935 static const PyMethodDef kxvik_pymethods
[] = {
2936 #define METHNAME(func) kxvikmeth_##func
2937 METH (copy
, "KECCAK.copy() -> KECCAK'")
2938 METH (mix
, "KECCAK.mix(DATA)")
2939 METH (extract
, "KECCAK.extract(NOCTETS)")
2940 METH (step
, "KECCAK.step()")
2945 static PyTypeObject kxvik_pytype_skel
= {
2946 PyObject_HEAD_INIT(0) 0, /* Header */
2947 "Keccak1600", /* @tp_name@ */
2948 sizeof(kxvik_pyobj
), /* @tp_basicsize@ */
2949 0, /* @tp_itemsize@ */
2951 0, /* @tp_dealloc@ */
2953 0, /* @tp_getattr@ */
2954 0, /* @tp_setattr@ */
2955 0, /* @tp_compare@ */
2957 0, /* @tp_as_number@ */
2958 0, /* @tp_as_sequence@ */
2959 0, /* @tp_as_mapping@ */
2963 0, /* @tp_getattro@ */
2964 0, /* @tp_setattro@ */
2965 0, /* @tp_as_buffer@ */
2966 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
2967 Py_TPFLAGS_BASETYPE
,
2970 "Keccak1600([nround = 24]): Keccak-p[1600, n] state.",
2972 0, /* @tp_traverse@ */
2974 0, /* @tp_richcompare@ */
2975 0, /* @tp_weaklistoffset@ */
2977 0, /* @tp_iternext@ */
2978 PYMETHODS(kxvik
), /* @tp_methods@ */
2979 0, /* @tp_members@ */
2980 PYGETSET(kxvik
), /* @tp_getset@ */
2983 0, /* @tp_descr_get@ */
2984 0, /* @tp_descr_set@ */
2985 0, /* @tp_dictoffset@ */
2987 PyType_GenericAlloc
, /* @tp_alloc@ */
2988 kxvik_pynew
, /* @tp_new@ */
2993 static PyTypeObject
*shake_pytype
, *shake128_pytype
, *shake256_pytype
;
2995 typedef struct shake_pyobj
{
3001 #define SHAKE_H(o) (&((shake_pyobj *)(o))->h)
3002 #define SHAKE_ST(o) (((shake_pyobj *)(o))->st)
3004 static PyObject
*shake_dopynew(void (*initfn
)(shake_ctx
*,
3005 const void *, size_t,
3006 const void *, size_t),
3008 PyObject
*arg
, PyObject
*kw
)
3010 shake_pyobj
*rc
= 0;
3011 char *p
= 0, *f
= 0;
3012 Py_ssize_t psz
= 0, fsz
= 0;
3013 static const char *const kwlist
[] = { "perso", "func", 0 };
3015 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|s#s#:new", KWLIST
,
3016 &p
, &psz
, &f
, &fsz
))
3018 rc
= (shake_pyobj
*)ty
->tp_alloc(ty
, 0);
3019 initfn(&rc
->h
, f
, fsz
, p
, psz
);
3022 return ((PyObject
*)rc
);
3025 static PyObject
*shake128_pynew(PyTypeObject
*ty
,
3026 PyObject
*arg
, PyObject
*kw
)
3027 { return (shake_dopynew(cshake128_init
, ty
, arg
, kw
)); }
3029 static PyObject
*shake256_pynew(PyTypeObject
*ty
,
3030 PyObject
*arg
, PyObject
*kw
)
3031 { return (shake_dopynew(cshake256_init
, ty
, arg
, kw
)); }
3033 static int shake_check(PyObject
*me
, int st
)
3035 if (SHAKE_ST(me
) != st
) VALERR("wrong state");
3041 static PyObject
*shakemeth_hash(PyObject
*me
, PyObject
*arg
)
3045 if (!PyArg_ParseTuple(arg
, "s#:hash", &p
, &sz
)) return (0);
3046 if (shake_check(me
, 0)) return (0);
3047 shake_hash(SHAKE_H(me
), p
, sz
);
3051 #define SHAKEMETH_HASHU_(n, W, w) \
3052 static PyObject *shakemeth_hashu##w(PyObject *me, PyObject *arg) \
3056 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
3057 if (shake_check(me, 0)) return (0); \
3058 STORE##W(b, x); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3061 DOUINTCONV(SHAKEMETH_HASHU_
)
3063 #define SHAKEMETH_HASHBUF_(n, W, w) \
3064 static PyObject *shakemeth_hashbuf##w(PyObject *me, PyObject *arg) \
3069 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
3070 if (sz > MASK##n) TYERR("string too long"); \
3071 if (shake_check(me, 0)) goto end; \
3072 STORE##W(b, sz); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3073 shake_hash(SHAKE_H(me), p, sz); \
3078 DOUINTCONV(SHAKEMETH_HASHBUF_
)
3080 static PyObject
*shakemeth_hashstrz(PyObject
*me
, PyObject
*arg
)
3083 if (!PyArg_ParseTuple(arg
, "s:hashstrz", &p
)) return (0);
3084 if (shake_check(me
, 0)) return (0);
3085 shake_hash(SHAKE_H(me
), p
, strlen(p
) + 1);
3089 static PyObject
*shakemeth_xof(PyObject
*me
, PyObject
*arg
)
3091 if (!PyArg_ParseTuple(arg
, ":xof")) goto end
;
3092 if (shake_check(me
, 0)) goto end
;
3093 shake_xof(SHAKE_H(me
));
3100 static PyObject
*shakemeth_done(PyObject
*me
, PyObject
*arg
)
3104 if (!PyArg_ParseTuple(arg
, "O&:done", convszt
, &n
)) goto end
;
3105 if (shake_check(me
, 0)) goto end
;
3106 rc
= bytestring_pywrap(0, n
);
3107 shake_done(SHAKE_H(me
), PyString_AS_STRING(rc
), n
);
3113 static PyObject
*shakemeth_copy(PyObject
*me
, PyObject
*arg
)
3115 shake_pyobj
*rc
= 0;
3117 if (!PyArg_ParseTuple(arg
, ":copy")) goto end
;
3118 rc
= PyObject_NEW(shake_pyobj
, me
->ob_type
);
3119 rc
->h
= *SHAKE_H(me
);
3120 rc
->st
= SHAKE_ST(me
);
3122 return ((PyObject
*)rc
);
3125 static PyObject
*shakemeth_get(PyObject
*me
, PyObject
*arg
)
3130 if (!PyArg_ParseTuple(arg
, "O&:get", convszt
, &sz
)) goto end
;
3131 if (shake_check(me
, 1)) goto end
;
3132 rc
= bytestring_pywrap(0, sz
);
3133 shake_get(SHAKE_H(me
), PyString_AS_STRING(rc
), sz
);
3138 static PyObject
*shakemeth_mask(PyObject
*me
, PyObject
*arg
)
3141 char *p
; Py_ssize_t sz
;
3143 if (!PyArg_ParseTuple(arg
, "s#:mask", &p
, &sz
)) goto end
;
3144 if (shake_check(me
, 1)) goto end
;
3145 rc
= bytestring_pywrap(0, sz
);
3146 shake_mask(SHAKE_H(me
), p
, PyString_AS_STRING(rc
), sz
);
3151 static PyObject
*shakeget_rate(PyObject
*me
, void *hunoz
)
3152 { return (PyInt_FromLong(SHAKE_H(me
)->h
.r
)); }
3154 static PyObject
*shakeget_buffered(PyObject
*me
, void *hunoz
)
3155 { return (PyInt_FromLong(SHAKE_H(me
)->h
.n
)); }
3157 static PyObject
*shakeget_state(PyObject
*me
, void *hunoz
)
3159 int st
= SHAKE_ST(me
);
3160 return (PyString_FromString(st
== 0 ?
"absorb" :
3161 st
== 1 ?
"squeeze" : "dead"));
3164 static const PyGetSetDef shake_pygetset
[] = {
3165 #define GETSETNAME(op, name) shake##op##_##name
3166 GET (rate
, "S.rate -> rate, in bytes")
3167 GET (buffered
, "S.buffered -> amount currently buffered")
3168 GET (state
, "S.state -> `absorb', `squeeze', `dead'")
3173 static const PyMethodDef shake_pymethods
[] = {
3174 #define METHNAME(func) shakemeth_##func
3175 METH (copy
, "S.copy() -> SS")
3176 METH (hash
, "S.hash(M)")
3177 #define METHU_(n, W, w) METH(hashu##w, "S.hashu" #w "(WORD)")
3180 #define METHBUF_(n, W, w) METH(hashbuf##w, "S.hashbuf" #w "(BYTES)")
3181 DOUINTCONV(METHBUF_
)
3183 METH (hashstrz
, "S.hashstrz(STRING)")
3184 METH (xof
, "S.xof()")
3185 METH (done
, "S.done(LEN) -> H")
3186 METH (get
, "S.get(LEN) -> H")
3187 METH (mask
, "S.mask(M) -> C")
3192 static PyTypeObject shake_pytype_skel
= {
3193 PyObject_HEAD_INIT(0) 0, /* Header */
3194 "Shake", /* @tp_name@ */
3195 sizeof(shake_pyobj
), /* @tp_basicsize@ */
3196 0, /* @tp_itemsize@ */
3198 0, /* @tp_dealloc@ */
3200 0, /* @tp_getattr@ */
3201 0, /* @tp_setattr@ */
3202 0, /* @tp_compare@ */
3204 0, /* @tp_as_number@ */
3205 0, /* @tp_as_sequence@ */
3206 0, /* @tp_as_mapping@ */
3210 0, /* @tp_getattro@ */
3211 0, /* @tp_setattro@ */
3212 0, /* @tp_as_buffer@ */
3213 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3214 Py_TPFLAGS_BASETYPE
,
3217 "SHAKE/cSHAKE/KMAC base class.",
3219 0, /* @tp_traverse@ */
3221 0, /* @tp_richcompare@ */
3222 0, /* @tp_weaklistoffset@ */
3224 0, /* @tp_iternext@ */
3225 PYMETHODS(shake
), /* @tp_methods@ */
3226 0, /* @tp_members@ */
3227 PYGETSET(shake
), /* @tp_getset@ */
3230 0, /* @tp_descr_get@ */
3231 0, /* @tp_descr_set@ */
3232 0, /* @tp_dictoffset@ */
3234 PyType_GenericAlloc
, /* @tp_alloc@ */
3235 abstract_pynew
, /* @tp_new@ */
3240 static PyTypeObject shake128_pytype_skel
= {
3241 PyObject_HEAD_INIT(0) 0, /* Header */
3242 "Shake128", /* @tp_name@ */
3243 0, /* @tp_basicsize@ */
3244 0, /* @tp_itemsize@ */
3246 0, /* @tp_dealloc@ */
3248 0, /* @tp_getattr@ */
3249 0, /* @tp_setattr@ */
3250 0, /* @tp_compare@ */
3252 0, /* @tp_as_number@ */
3253 0, /* @tp_as_sequence@ */
3254 0, /* @tp_as_mapping@ */
3258 0, /* @tp_getattro@ */
3259 0, /* @tp_setattro@ */
3260 0, /* @tp_as_buffer@ */
3261 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3262 Py_TPFLAGS_BASETYPE
,
3265 "Shake128([perso = STR], [func = STR]): SHAKE128/cSHAKE128 XOF.",
3267 0, /* @tp_traverse@ */
3269 0, /* @tp_richcompare@ */
3270 0, /* @tp_weaklistoffset@ */
3272 0, /* @tp_iternext@ */
3273 0, /* @tp_methods@ */
3274 0, /* @tp_members@ */
3275 0, /* @tp_getset@ */
3278 0, /* @tp_descr_get@ */
3279 0, /* @tp_descr_set@ */
3280 0, /* @tp_dictoffset@ */
3282 PyType_GenericAlloc
, /* @tp_alloc@ */
3283 shake128_pynew
, /* @tp_new@ */
3288 static PyTypeObject shake256_pytype_skel
= {
3289 PyObject_HEAD_INIT(0) 0, /* Header */
3290 "Shake256", /* @tp_name@ */
3291 0, /* @tp_basicsize@ */
3292 0, /* @tp_itemsize@ */
3294 0, /* @tp_dealloc@ */
3296 0, /* @tp_getattr@ */
3297 0, /* @tp_setattr@ */
3298 0, /* @tp_compare@ */
3300 0, /* @tp_as_number@ */
3301 0, /* @tp_as_sequence@ */
3302 0, /* @tp_as_mapping@ */
3306 0, /* @tp_getattro@ */
3307 0, /* @tp_setattro@ */
3308 0, /* @tp_as_buffer@ */
3309 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3310 Py_TPFLAGS_BASETYPE
,
3313 "Shake256([perso = STR], [func = STR]): SHAKE256/cSHAKE256 XOF.",
3315 0, /* @tp_traverse@ */
3317 0, /* @tp_richcompare@ */
3318 0, /* @tp_weaklistoffset@ */
3320 0, /* @tp_iternext@ */
3321 0, /* @tp_methods@ */
3322 0, /* @tp_members@ */
3323 0, /* @tp_getset@ */
3326 0, /* @tp_descr_get@ */
3327 0, /* @tp_descr_set@ */
3328 0, /* @tp_dictoffset@ */
3330 PyType_GenericAlloc
, /* @tp_alloc@ */
3331 shake256_pynew
, /* @tp_new@ */
3336 /*----- Pseudorandom permutations -----------------------------------------*/
3338 static PyTypeObject
*gcprp_pytype
, *gprp_pytype
;
3340 typedef struct prpinfo
{
3345 void (*init
)(void *, const void *, size_t);
3346 void (*eblk
)(void *, const void *, void *);
3347 void (*dblk
)(void *, const void *, void *);
3350 #define PRP_DEF(PRE, pre) \
3351 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
3352 { pre##_init(ctx, k, ksz); } \
3353 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
3355 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3356 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3358 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
3360 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
3361 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
3363 static const prpinfo pre##_prpinfo = { \
3364 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
3365 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
3369 static const struct prpinfo
*const gprptab
[] = {
3370 #define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
3375 typedef struct gcprp_pyobj
{
3376 PyHeapTypeObject ty
;
3379 #define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
3381 typedef struct gprp_pyobj
{
3385 #define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
3386 #define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
3388 typedef struct prp
{
3393 static PyObject
*gprp_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
3395 static const char *const kwlist
[] = { "key", 0 };
3398 const prpinfo
*prp
= GCPRP_PRP(ty
);
3401 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "s#:new", KWLIST
, &k
, &sz
))
3403 if (keysz(sz
, prp
->keysz
) != sz
) VALERR("bad key length");
3404 me
= (PyObject
*)ty
->tp_alloc(ty
, 0);
3406 prp
->init(GPRP_CTX(me
), k
, sz
);
3413 static void gprp_pydealloc(PyObject
*me
)
3414 { Py_DECREF(me
->ob_type
); FREEOBJ(me
); }
3416 static PyObject
*gcprp_pywrap(const prpinfo
*prp
)
3418 gcprp_pyobj
*g
= newtype(gcprp_pytype
, 0, prp
->name
);
3420 g
->ty
.ht_type
.tp_basicsize
= sizeof(gprp_pyobj
) + prp
->ctxsz
;
3421 g
->ty
.ht_type
.tp_base
= gprp_pytype
;
3422 Py_INCREF(gprp_pytype
);
3423 g
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
3424 Py_TPFLAGS_BASETYPE
|
3425 Py_TPFLAGS_HEAPTYPE
);
3426 g
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
3427 g
->ty
.ht_type
.tp_free
= 0;
3428 g
->ty
.ht_type
.tp_new
= gprp_pynew
;
3429 typeready(&g
->ty
.ht_type
);
3430 return ((PyObject
*)g
);
3433 static PyObject
*gcpget_name(PyObject
*me
, void *hunoz
)
3434 { return (PyString_FromString(GCPRP_PRP(me
)->name
)); }
3435 static PyObject
*gcpget_keysz(PyObject
*me
, void *hunoz
)
3436 { return (keysz_pywrap(GCPRP_PRP(me
)->keysz
)); }
3437 static PyObject
*gcpget_blksz(PyObject
*me
, void *hunoz
)
3438 { return (PyInt_FromLong(GCPRP_PRP(me
)->blksz
)); }
3440 static PyObject
*gpmeth_encrypt(PyObject
*me
, PyObject
*arg
)
3446 if (!PyArg_ParseTuple(arg
, "s#:encrypt", &p
, &n
)) goto end
;
3447 if (n
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
3448 rc
= bytestring_pywrap(0, n
);
3449 GPRP_PRP(me
)->eblk(GPRP_CTX(me
), p
, PyString_AS_STRING(rc
));
3454 static PyObject
*gpmeth_decrypt(PyObject
*me
, PyObject
*arg
)
3460 if (!PyArg_ParseTuple(arg
, "s#:decrypt", &p
, &n
)) goto end
;
3461 if (n
!= GPRP_PRP(me
)->blksz
) VALERR("incorrect block length");
3462 rc
= bytestring_pywrap(0, n
);
3463 GPRP_PRP(me
)->dblk(GPRP_CTX(me
), p
, PyString_AS_STRING(rc
));
3468 static const PyGetSetDef gcprp_pygetset
[] = {
3469 #define GETSETNAME(op, name) gcp##op##_##name
3470 GET (keysz
, "CP.keysz -> acceptable key sizes")
3471 GET (blksz
, "CP.blksz -> block size")
3472 GET (name
, "CP.name -> name of this kind of PRP")
3477 static const PyMethodDef gprp_pymethods
[] = {
3478 #define METHNAME(name) gpmeth_##name
3479 METH (encrypt
, "P.encrypt(PT) -> CT")
3480 METH (decrypt
, "P.decrypt(CT) -> PT")
3485 static PyTypeObject gcprp_pytype_skel
= {
3486 PyObject_HEAD_INIT(0) 0, /* Header */
3487 "GCPRP", /* @tp_name@ */
3488 sizeof(gcprp_pyobj
), /* @tp_basicsize@ */
3489 0, /* @tp_itemsize@ */
3491 0, /* @tp_dealloc@ */
3493 0, /* @tp_getattr@ */
3494 0, /* @tp_setattr@ */
3495 0, /* @tp_compare@ */
3497 0, /* @tp_as_number@ */
3498 0, /* @tp_as_sequence@ */
3499 0, /* @tp_as_mapping@ */
3503 0, /* @tp_getattro@ */
3504 0, /* @tp_setattro@ */
3505 0, /* @tp_as_buffer@ */
3506 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3507 Py_TPFLAGS_BASETYPE
,
3510 "Pseudorandom permutation metaclass.",
3512 0, /* @tp_traverse@ */
3514 0, /* @tp_richcompare@ */
3515 0, /* @tp_weaklistoffset@ */
3517 0, /* @tp_iternext@ */
3518 0, /* @tp_methods@ */
3519 0, /* @tp_members@ */
3520 PYGETSET(gcprp
), /* @tp_getset@ */
3523 0, /* @tp_descr_get@ */
3524 0, /* @tp_descr_set@ */
3525 0, /* @tp_dictoffset@ */
3527 PyType_GenericAlloc
, /* @tp_alloc@ */
3528 abstract_pynew
, /* @tp_new@ */
3533 static PyTypeObject gprp_pytype_skel
= {
3534 PyObject_HEAD_INIT(0) 0, /* Header */
3535 "GPRP", /* @tp_name@ */
3536 sizeof(gprp_pyobj
), /* @tp_basicsize@ */
3537 0, /* @tp_itemsize@ */
3539 gprp_pydealloc
, /* @tp_dealloc@ */
3541 0, /* @tp_getattr@ */
3542 0, /* @tp_setattr@ */
3543 0, /* @tp_compare@ */
3545 0, /* @tp_as_number@ */
3546 0, /* @tp_as_sequence@ */
3547 0, /* @tp_as_mapping@ */
3551 0, /* @tp_getattro@ */
3552 0, /* @tp_setattro@ */
3553 0, /* @tp_as_buffer@ */
3554 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
3555 Py_TPFLAGS_BASETYPE
,
3558 "Pseudorandom permutation, abstract base class.",
3560 0, /* @tp_traverse@ */
3562 0, /* @tp_richcompare@ */
3563 0, /* @tp_weaklistoffset@ */
3565 0, /* @tp_iternext@ */
3566 PYMETHODS(gprp
), /* @tp_methods@ */
3567 0, /* @tp_members@ */
3568 0, /* @tp_getset@ */
3571 0, /* @tp_descr_get@ */
3572 0, /* @tp_descr_set@ */
3573 0, /* @tp_dictoffset@ */
3575 PyType_GenericAlloc
, /* @tp_alloc@ */
3576 abstract_pynew
, /* @tp_new@ */
3581 /*----- Main code ---------------------------------------------------------*/
3583 static const PyMethodDef methods
[] = {
3584 #define METHNAME(func) meth_##func
3585 METH (_KeySZ_fromdl
, "fromdl(N) -> M: "
3586 "convert integer discrete log field size to work factor")
3587 METH (_KeySZ_fromschnorr
, "fromschnorr(N) -> M: "
3588 "convert Schnorr group order to work factor")
3589 METH (_KeySZ_fromif
, "fromif(N) -> M: "
3590 "convert integer factorization problem size to work factor")
3591 METH (_KeySZ_fromec
, "fromec(N) -> M: "
3592 "convert elliptic curve group order to work factor")
3593 METH (_KeySZ_todl
, "todl(N) -> M: "
3594 "convert work factor to integer discrete log field size")
3595 METH (_KeySZ_toschnorr
, "toschnorr(N) -> M: "
3596 "convert work factor to Schnorr group order")
3597 METH (_KeySZ_toif
, "toif(N) -> M: "
3598 "convert work factor to integer factorization problem size")
3599 METH (_KeySZ_toec
, "toec(N) -> M: "
3600 "convert work factor to elliptic curve group order")
3601 METH (_KeySZ_toec
, "toec(N) -> M: "
3602 "convert work factor to elliptic curve group order")
3603 #define METH_HDANCE(hdance, HDance) METH(hdance##_prf, \
3604 "" #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
3605 METH_HDANCE(hsalsa20
, "HSalsa20")
3606 METH_HDANCE(hsalsa2012
, "HSalsa20/12")
3607 METH_HDANCE(hsalsa208
, "HSalsa20/8")
3608 METH_HDANCE(hchacha20
, "HChaCha20")
3609 METH_HDANCE(hchacha12
, "HChaCha12")
3610 METH_HDANCE(hchacha8
, "HChaCha8")
3616 void algorithms_pyinit(void)
3618 INITTYPE(keysz
, root
);
3619 INITTYPE(keyszany
, keysz
);
3620 INITTYPE(keyszrange
, keysz
);
3621 INITTYPE(keyszset
, keysz
);
3622 INITTYPE(gccipher
, type
);
3623 INITTYPE(gcipher
, root
);
3624 INITTYPE(gcaead
, type
);
3625 INITTYPE(gaeadkey
, root
);
3626 INITTYPE(gcaeadaad
, type
);
3627 INITTYPE(gaeadaad
, root
);
3628 INITTYPE(gcaeadenc
, type
);
3629 INITTYPE(gaeadenc
, root
);
3630 INITTYPE(gcaeaddec
, type
);
3631 INITTYPE(gaeaddec
, root
);
3632 INITTYPE(gchash
, type
);
3633 INITTYPE(ghash
, root
);
3634 INITTYPE(gcmac
, type
);
3635 INITTYPE(gmac
, type
);
3636 INITTYPE(gmhash
, ghash
);
3637 INITTYPE(poly1305cls
, type
);
3638 INITTYPE_META(poly1305key
, type
, poly1305cls
);
3639 INITTYPE(poly1305hash
, root
);
3640 INITTYPE(kxvik
, root
);
3641 INITTYPE(shake
, root
);
3642 INITTYPE(shake128
, shake
);
3643 INITTYPE(shake256
, shake
);
3644 INITTYPE(gcprp
, type
);
3645 INITTYPE(gprp
, root
);
3646 addmethods(methods
);
3649 GEN(gcciphers
, cipher
)
3653 #define gcprp prpinfo
3656 void algorithms_pyinsert(PyObject
*mod
)
3659 INSERT("KeySZ", keysz_pytype
);
3660 INSERT("KeySZAny", keyszany_pytype
);
3661 INSERT("KeySZRange", keyszrange_pytype
);
3662 INSERT("KeySZSet", keyszset_pytype
);
3663 INSERT("GCCipher", gccipher_pytype
);
3664 INSERT("GCipher", gcipher_pytype
);
3665 INSERT("gcciphers", gcciphers());
3666 INSERT("GCAEAD", gcaead_pytype
);
3667 INSERT("GAEKey", gaeadkey_pytype
);
3668 INSERT("GAEAADClass", gcaeadaad_pytype
);
3669 INSERT("GAEAAD", gaeadaad_pytype
);
3670 INSERT("GAEEncClass", gcaeadenc_pytype
);
3671 INSERT("GAEEnc", gaeadenc_pytype
);
3672 INSERT("GAEDecClass", gcaeaddec_pytype
);
3673 INSERT("GAEDec", gaeaddec_pytype
);
3674 INSERT("gcaeads", gcaeads());
3675 INSERT("GCHash", gchash_pytype
);
3676 INSERT("GHash", ghash_pytype
);
3677 INSERT("gchashes", d
= gchashes());
3678 sha_pyobj
= PyDict_GetItemString(d
, "sha"); Py_INCREF(sha_pyobj
);
3679 has160_pyobj
= PyDict_GetItemString(d
, "has160"); Py_INCREF(has160_pyobj
);
3680 INSERT("GCMAC", gcmac_pytype
);
3681 INSERT("GMAC", gmac_pytype
);
3682 INSERT("GMACHash", gmhash_pytype
);
3683 INSERT("gcmacs", gcmacs());
3684 INSERT("Poly1305Class", poly1305cls_pytype
);
3685 INSERT("poly1305", poly1305key_pytype
);
3686 INSERT("Poly1305Hash", poly1305hash_pytype
);
3687 INSERT("Keccak1600", kxvik_pytype
);
3688 INSERT("Shake", shake_pytype
);
3689 INSERT("Shake128", shake128_pytype
);
3690 INSERT("Shake256", shake256_pytype
);
3691 INSERT("GCPRP", gcprp_pytype
);
3692 INSERT("GPRP", gprp_pytype
);
3693 INSERT("gcprps", gcprps());
3696 /*----- That's all, folks -------------------------------------------------*/