nettle-internal.h 2.61 KB
Newer Older
Niels Möller's avatar
Niels Möller committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
/* nettle-internal.h
 *
 * Things that are used only by the testsuite and benchmark, and
 * subject to change.
 */

/* nettle, low-level cryptographics library
 *
 * Copyright (C) 2002 Niels Möller
 *  
 * The nettle library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or (at your
 * option) any later version.
 * 
 * The nettle library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 * License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with the nettle library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA.
 */

#ifndef NETTLE_INTERNAL_H_INCLUDED
#define NETTLE_INTERNAL_H_INCLUDED

#include "nettle-meta.h"

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
/* Temporary allocation, for systems that don't support alloca. Note
 * that the allocation requests should always be reasonably small, so
 * that they can fit on the stack. For non-alloca systems, we use a
 * fix maximum size, and abort if we ever need anything larger. */

#if HAVE_ALLOCA
# define TMP_DECL(name, type, max) \
type *name
# define TMP_ALLOC(name, size) \
(name = alloca(sizeof (*name) * size))
#else /* !HAVE_ALLOCA */
# define TMP_DECL(name, type, max) \
type name[max]
# define TMP_ALLOC(name, size) \
do { if (size > (sizeof(name) / sizeof(name[0]))) abort(); } while (0)
#endif 

/* Arbitrary limits which apply to systems that don't have alloca */
#define NETTLE_MAX_BIGNUM_BITS 10000
#define NETTLE_MAX_HASH_BLOCK_SIZE 64
#define NETTLE_MAX_HASH_DIGEST_SIZE 32
#define NETTLE_MAX_SEXP_ASSOC 17
 
Niels Möller's avatar
Niels Möller committed
55 56 57 58 59 60 61 62 63
/* Doesn't quite fit with the other algorithms, because of the weak
 * keys. Weak keys are not reported, the functions will simply crash
 * if you try to use a weak key. */

extern const struct nettle_cipher nettle_des;
extern const struct nettle_cipher nettle_des3;

extern const struct nettle_cipher nettle_blowfish128;

64 65 66 67
/* Glue to openssl, for comparative benchmarking. The corresponding
 * code is not included in the nettle library, as that would make the
 * shared library depend on openssl. Instead, look at
 * examples/nettle-openssl.c. */
Niels Möller's avatar
Niels Möller committed
68 69 70 71
extern const struct nettle_cipher nettle_openssl_blowfish128;
extern const struct nettle_cipher nettle_openssl_des;
extern const struct nettle_cipher nettle_openssl_cast128;

Niels Möller's avatar
Niels Möller committed
72
#endif /* NETTLE_INTERNAL_H_INCLUDED */