nettle-internal.h 3.15 KB
Newer Older
Niels Möller's avatar
Niels Möller committed
1 2 3 4 5 6 7 8
/* nettle-internal.h
 *
 * Things that are used only by the testsuite and benchmark, and
 * subject to change.
 */

/* nettle, low-level cryptographics library
 *
9
 * Copyright (C) 2002, 2014 Niels Möller
Niels Möller's avatar
Niels Möller committed
10 11 12 13 14 15 16 17 18 19 20 21 22
 *  
 * 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
23 24
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02111-1301, USA.
Niels Möller's avatar
Niels Möller committed
25 26 27 28 29 30 31
 */

#ifndef NETTLE_INTERNAL_H_INCLUDED
#define NETTLE_INTERNAL_H_INCLUDED

#include "nettle-meta.h"

32 33 34 35 36 37
/* 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
38
# define TMP_DECL(name, type, max) type *name
39
# define TMP_ALLOC(name, size) (name = alloca(sizeof (*name) * (size)))
40
#else /* !HAVE_ALLOCA */
41
# define TMP_DECL(name, type, max) type name[max]
42
# define TMP_ALLOC(name, size) \
43
  do { if ((size) > (sizeof(name) / sizeof(name[0]))) abort(); } while (0)
44 45 46
#endif 

/* Arbitrary limits which apply to systems that don't have alloca */
Niels Möller's avatar
Niels Möller committed
47 48
#define NETTLE_MAX_HASH_BLOCK_SIZE 128
#define NETTLE_MAX_HASH_DIGEST_SIZE 64
49
#define NETTLE_MAX_SEXP_ASSOC 17
50 51
#define NETTLE_MAX_CIPHER_BLOCK_SIZE 32

Niels Möller's avatar
Niels Möller committed
52 53 54 55 56 57 58 59 60
/* 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;

Niels Möller's avatar
Niels Möller committed
61
extern const struct nettle_cipher nettle_unified_aes128;
Niels Möller's avatar
Niels Möller committed
62
extern const struct nettle_cipher nettle_unified_aes192;
63
extern const struct nettle_cipher nettle_unified_aes256;
Niels Möller's avatar
Niels Möller committed
64

65 66 67 68 69
/* Stream ciphers treated as aead algorithms with no authentication. */
extern const struct nettle_aead nettle_chacha;
extern const struct nettle_aead nettle_salsa20;
extern const struct nettle_aead nettle_salsa20r12;

70
/* Glue to openssl, for comparative benchmarking. Code in
71
 * examples/nettle-openssl.c. */
72 73 74
extern const struct nettle_cipher nettle_openssl_aes128;
extern const struct nettle_cipher nettle_openssl_aes192;
extern const struct nettle_cipher nettle_openssl_aes256;
Niels Möller's avatar
Niels Möller committed
75 76 77 78
extern const struct nettle_cipher nettle_openssl_blowfish128;
extern const struct nettle_cipher nettle_openssl_des;
extern const struct nettle_cipher nettle_openssl_cast128;

79 80 81
extern const struct nettle_hash nettle_openssl_md5;
extern const struct nettle_hash nettle_openssl_sha1;

Niels Möller's avatar
Niels Möller committed
82
#endif /* NETTLE_INTERNAL_H_INCLUDED */