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Diffstat (limited to 'keyexchange/isakmpd-20041012/hash.c')
| -rw-r--r-- | keyexchange/isakmpd-20041012/hash.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/keyexchange/isakmpd-20041012/hash.c b/keyexchange/isakmpd-20041012/hash.c deleted file mode 100644 index 84773f8..0000000 --- a/keyexchange/isakmpd-20041012/hash.c +++ /dev/null @@ -1,145 +0,0 @@ -/* $OpenBSD: hash.c,v 1.17 2004/06/14 09:55:41 ho Exp $ */ -/* $EOM: hash.c,v 1.10 1999/04/17 23:20:34 niklas Exp $ */ - -/* - * Copyright (c) 1998 Niels Provos. All rights reserved. - * Copyright (c) 1999 Niklas Hallqvist. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * This code was written under funding by Ericsson Radio Systems. - */ - -#include <sys/param.h> -#include <string.h> -#if defined (__APPLE__) -#include <openssl/md5.h> -#include <openssl/sha.h> -#else -#include <md5.h> -#include <sha1.h> -#endif /* __APPLE__ */ - -#include "sysdep.h" - -#include "hash.h" -#include "log.h" - -void hmac_init(struct hash *, unsigned char *, unsigned int); -void hmac_final(unsigned char *, struct hash *); - -/* Temporary hash contexts. */ -static union { - MD5_CTX md5ctx; - SHA1_CTX sha1ctx; -} Ctx, Ctx2; - -/* Temporary hash digest. */ -static unsigned char digest[HASH_MAX]; - -/* Encapsulation of hash functions. */ - -static struct hash hashes[] = { - { - HASH_MD5, 5, MD5_SIZE, (void *)&Ctx.md5ctx, digest, - sizeof(MD5_CTX), (void *)&Ctx2.md5ctx, - (void (*)(void *))MD5Init, - (void (*)(void *, unsigned char *, unsigned int))MD5Update, - (void (*)(unsigned char *, void *))MD5Final, - hmac_init, - hmac_final - }, { - HASH_SHA1, 6, SHA1_SIZE, (void *)&Ctx.sha1ctx, digest, - sizeof(SHA1_CTX), (void *)&Ctx2.sha1ctx, - (void (*)(void *))SHA1Init, - (void (*)(void *, unsigned char *, unsigned int))SHA1Update, - (void (*)(unsigned char *, void *))SHA1Final, - hmac_init, - hmac_final - }, -}; - -struct hash * -hash_get(enum hashes hashtype) -{ - size_t i; - - LOG_DBG((LOG_CRYPTO, 60, "hash_get: requested algorithm %d", - hashtype)); - - for (i = 0; i < sizeof hashes / sizeof hashes[0]; i++) - if (hashtype == hashes[i].type) - return &hashes[i]; - - return 0; -} - -/* - * Initial a hash for HMAC usage this requires a special init function. - * ctx, ctx2 hold the contexts, if you want to use the hash object for - * something else in the meantime, be sure to store the contexts somewhere. - */ - -void -hmac_init(struct hash *hash, unsigned char *okey, unsigned int len) -{ - unsigned int i, blocklen = HMAC_BLOCKLEN; - unsigned char key[HMAC_BLOCKLEN]; - - memset(key, 0, blocklen); - if (len > blocklen) { - /* Truncate key down to blocklen */ - hash->Init(hash->ctx); - hash->Update(hash->ctx, okey, len); - hash->Final(key, hash->ctx); - } else { - memcpy(key, okey, len); - } - - /* HMAC I and O pad computation */ - for (i = 0; i < blocklen; i++) - key[i] ^= HMAC_IPAD_VAL; - - hash->Init(hash->ctx); - hash->Update(hash->ctx, key, blocklen); - - for (i = 0; i < blocklen; i++) - key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL); - - hash->Init(hash->ctx2); - hash->Update(hash->ctx2, key, blocklen); - - memset(key, 0, blocklen); -} - -/* - * HMAC Final function - */ - -void -hmac_final(unsigned char *dgst, struct hash *hash) -{ - hash->Final(dgst, hash->ctx); - hash->Update(hash->ctx2, dgst, hash->hashsize); - hash->Final(dgst, hash->ctx2); -} |