diff options
Diffstat (limited to 'keyexchange/isakmpd-20041012/prf.c')
| -rw-r--r-- | keyexchange/isakmpd-20041012/prf.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/keyexchange/isakmpd-20041012/prf.c b/keyexchange/isakmpd-20041012/prf.c deleted file mode 100644 index fdb91fe..0000000 --- a/keyexchange/isakmpd-20041012/prf.c +++ /dev/null @@ -1,161 +0,0 @@ -/* $OpenBSD: prf.c,v 1.14 2004/05/23 18:17:56 hshoexer Exp $ */ -/* $EOM: prf.c,v 1.7 1999/05/02 12:50:29 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 <stdlib.h> -#include <string.h> - -#include "sysdep.h" - -#include "hash.h" -#include "log.h" -#include "prf.h" - -void prf_hash_init(struct prf_hash_ctx *); -void prf_hash_update(struct prf_hash_ctx *, unsigned char *, unsigned int); -void prf_hash_final(unsigned char *, struct prf_hash_ctx *); - -/* PRF behaves likes a hash */ - -void -prf_hash_init(struct prf_hash_ctx *ctx) -{ - memcpy(ctx->hash->ctx, ctx->ctx, ctx->hash->ctxsize); - memcpy(ctx->hash->ctx2, ctx->ctx2, ctx->hash->ctxsize); -} - -void -prf_hash_update(struct prf_hash_ctx *ctx, unsigned char *data, - unsigned int len) -{ - ctx->hash->Update(ctx->hash->ctx, data, len); -} - -void -prf_hash_final(unsigned char *digest, struct prf_hash_ctx *ctx) -{ - ctx->hash->HMACFinal(digest, ctx->hash); -} - -/* - * Obtain a Pseudo-Random Function for us. At the moment this is - * the HMAC version of a hash. See RFC-2104 for reference. - */ -struct prf * -prf_alloc(enum prfs type, int subtype, unsigned char *shared, - unsigned int sharedsize) -{ - struct hash *hash; - struct prf *prf; - struct prf_hash_ctx *prfctx; - - switch (type) { - case PRF_HMAC: - hash = hash_get(subtype); - if (!hash) { - log_print("prf_alloc: unknown hash type %d", subtype); - return 0; - } - break; - default: - log_print("prf_alloc: unknown PRF type %d", type); - return 0; - } - - prf = malloc(sizeof *prf); - if (!prf) { - log_error("prf_alloc: malloc (%lu) failed", - (unsigned long)sizeof *prf); - return 0; - } - if (type == PRF_HMAC) { - /* Obtain needed memory. */ - prfctx = malloc(sizeof *prfctx); - if (!prfctx) { - log_error("prf_alloc: malloc (%lu) failed", - (unsigned long)sizeof *prfctx); - goto cleanprf; - } - prf->prfctx = prfctx; - - prfctx->ctx = malloc(hash->ctxsize); - if (!prfctx->ctx) { - log_error("prf_alloc: malloc (%d) failed", - hash->ctxsize); - goto cleanprfctx; - } - prfctx->ctx2 = malloc(hash->ctxsize); - if (!prfctx->ctx2) { - log_error("prf_alloc: malloc (%d) failed", - hash->ctxsize); - free(prfctx->ctx); - goto cleanprfctx; - } - prf->type = PRF_HMAC; - prf->blocksize = hash->hashsize; - prfctx->hash = hash; - - /* Use the correct function pointers. */ - prf->Init = (void(*)(void *))prf_hash_init; - prf->Update = (void(*)(void *, unsigned char *, - unsigned int))prf_hash_update; - prf->Final = (void(*)(unsigned char *, void *))prf_hash_final; - - /* Init HMAC contexts. */ - hash->HMACInit(hash, shared, sharedsize); - - /* Save contexts. */ - memcpy(prfctx->ctx, hash->ctx, hash->ctxsize); - memcpy(prfctx->ctx2, hash->ctx2, hash->ctxsize); - } - return prf; - -cleanprfctx: - free(prf->prfctx); -cleanprf: - free(prf); - return 0; -} - -/* Deallocate the PRF pointed to by PRF. */ -void -prf_free(struct prf *prf) -{ - struct prf_hash_ctx *prfctx = prf->prfctx; - - if (prf->type == PRF_HMAC) { - free(prfctx->ctx2); - free(prfctx->ctx); - } - free(prf->prfctx); - free(prf); -} |