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Diffstat (limited to 'sha1.h')
| -rw-r--r-- | sha1.h | 85 |
1 files changed, 85 insertions, 0 deletions
@@ -0,0 +1,85 @@ +/*! + * \copy + * Copyright (c) 1998, 2009 Paul E. Jones <paulej@packetizer.com> + * 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. + * + * 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 HOLDER 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. + * + */ + +/* + * Description: + * This class implements the Secure Hashing Standard as defined + * in FIPS PUB 180-1 published April 17, 1995. + * + * Many of the variable names in the SHA1Context, especially the + * single character names, were used because those were the names + * used in the publication. + * + * Please read the file sha1.c for more information. + * + */ + +#ifndef _SHA1_H_ +#define _SHA1_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * This structure will hold context information for the hashing + * operation + */ +typedef struct SHA1Context { + unsigned Message_Digest[5]; /* Message Digest (output) */ + + unsigned Length_Low; /* Message length in bits */ + unsigned Length_High; /* Message length in bits */ + + unsigned char Message_Block[64]; /* 512-bit message blocks */ + int Message_Block_Index; /* Index into message block array */ + + int Computed; /* Is the digest computed? */ + int Corrupted; /* Is the message digest corruped? */ +} SHA1Context; + +/* + * Function Prototypes + */ +void SHA1Reset (SHA1Context*); +int SHA1Result (SHA1Context*, unsigned char*); +void SHA1Input (SHA1Context*, + const unsigned char*, + unsigned); + +#define SHA_DIGEST_LENGTH 20 + +#ifdef __cplusplus +} +#endif + +#endif |