1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/netwerk/srtp/src/crypto/include/sha1.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,108 @@
1.4 +/*
1.5 + * sha1.h
1.6 + *
1.7 + * interface to the Secure Hash Algorithm v.1 (SHA-1), specified in
1.8 + * FIPS 180-1
1.9 + *
1.10 + * David A. McGrew
1.11 + * Cisco Systems, Inc.
1.12 + */
1.13 +
1.14 +/*
1.15 + *
1.16 + * Copyright (c) 2001-2006, Cisco Systems, Inc.
1.17 + * All rights reserved.
1.18 + *
1.19 + * Redistribution and use in source and binary forms, with or without
1.20 + * modification, are permitted provided that the following conditions
1.21 + * are met:
1.22 + *
1.23 + * Redistributions of source code must retain the above copyright
1.24 + * notice, this list of conditions and the following disclaimer.
1.25 + *
1.26 + * Redistributions in binary form must reproduce the above
1.27 + * copyright notice, this list of conditions and the following
1.28 + * disclaimer in the documentation and/or other materials provided
1.29 + * with the distribution.
1.30 + *
1.31 + * Neither the name of the Cisco Systems, Inc. nor the names of its
1.32 + * contributors may be used to endorse or promote products derived
1.33 + * from this software without specific prior written permission.
1.34 + *
1.35 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.36 + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.37 + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
1.38 + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
1.39 + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
1.40 + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1.41 + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1.42 + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.43 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
1.44 + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.45 + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
1.46 + * OF THE POSSIBILITY OF SUCH DAMAGE.
1.47 + *
1.48 + */
1.49 +
1.50 +#ifndef SHA1_H
1.51 +#define SHA1_H
1.52 +
1.53 +#include "err.h"
1.54 +#include "datatypes.h"
1.55 +
1.56 +typedef struct {
1.57 + uint32_t H[5]; /* state vector */
1.58 + uint32_t M[16]; /* message buffer */
1.59 + int octets_in_buffer; /* octets of message in buffer */
1.60 + uint32_t num_bits_in_msg; /* total number of bits in message */
1.61 +} sha1_ctx_t;
1.62 +
1.63 +/*
1.64 + * sha1(&ctx, msg, len, output) hashes the len octets starting at msg
1.65 + * into the SHA1 context, then writes the result to the 20 octets at
1.66 + * output
1.67 + *
1.68 + */
1.69 +
1.70 +void
1.71 +sha1(const uint8_t *message, int octets_in_msg, uint32_t output[5]);
1.72 +
1.73 +/*
1.74 + * sha1_init(&ctx) initializes the SHA1 context ctx
1.75 + *
1.76 + * sha1_update(&ctx, msg, len) hashes the len octets starting at msg
1.77 + * into the SHA1 context
1.78 + *
1.79 + * sha1_final(&ctx, output) performs the final processing of the SHA1
1.80 + * context and writes the result to the 20 octets at output
1.81 + *
1.82 + */
1.83 +
1.84 +void
1.85 +sha1_init(sha1_ctx_t *ctx);
1.86 +
1.87 +void
1.88 +sha1_update(sha1_ctx_t *ctx, const uint8_t *M, int octets_in_msg);
1.89 +
1.90 +void
1.91 +sha1_final(sha1_ctx_t *ctx, uint32_t output[5]);
1.92 +
1.93 +/*
1.94 + * The sha1_core function is INTERNAL to SHA-1, but it is declared
1.95 + * here because it is also used by the cipher SEAL 3.0 in its key
1.96 + * setup algorithm.
1.97 + */
1.98 +
1.99 +/*
1.100 + * sha1_core(M, H) computes the core sha1 compression function, where M is
1.101 + * the next part of the message and H is the intermediate state {H0,
1.102 + * H1, ...}
1.103 + *
1.104 + * this function does not do any of the padding required in the
1.105 + * complete sha1 function
1.106 + */
1.107 +
1.108 +void
1.109 +sha1_core(const uint32_t M[16], uint32_t hash_value[5]);
1.110 +
1.111 +#endif /* SHA1_H */
