From 0275479cb56c7f562f3513fef66c83fc44d1d8c9 Mon Sep 17 00:00:00 2001 From: Erwin Nindl Date: Fri, 22 Jun 2007 13:59:20 +0000 Subject: added libsrtp to svn --- srtp/crypto/include/hmac.h | 78 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 srtp/crypto/include/hmac.h (limited to 'srtp/crypto/include/hmac.h') diff --git a/srtp/crypto/include/hmac.h b/srtp/crypto/include/hmac.h new file mode 100644 index 0000000..262c0e2 --- /dev/null +++ b/srtp/crypto/include/hmac.h @@ -0,0 +1,78 @@ +/* + * hmac.h + * + * interface to hmac auth_type_t + * + * David A. McGrew + * Cisco Systems, Inc. + * + */ +/* + * + * Copyright (c) 2001-2006, Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 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. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 + * COPYRIGHT HOLDERS OR CONTRIBUTORS 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. + * + */ + +#ifndef HMAC_H +#define HMAC_H + +#include "auth.h" +#include "sha1.h" + +typedef struct { + uint8_t opad[64]; + sha1_ctx_t ctx; + sha1_ctx_t init_ctx; +} hmac_ctx_t; + +err_status_t +hmac_alloc(auth_t **a, int key_len, int out_len); + +err_status_t +hmac_dealloc(auth_t *a); + +err_status_t +hmac_init(hmac_ctx_t *state, const uint8_t *key, int key_len); + +err_status_t +hmac_start(hmac_ctx_t *state); + +err_status_t +hmac_update(hmac_ctx_t *state, const uint8_t *message, int msg_octets); + +err_status_t +hmac_compute(hmac_ctx_t *state, const void *message, + int msg_octets, int tag_len, uint8_t *result); + + +#endif /* HMAC_H */ -- cgit v1.2.3