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102 lines
3.4 KiB
102 lines
3.4 KiB
/*
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* Copyright (C) The Internet Society (2001). All Rights Reserved.
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*
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* This document and translations of it may be copied and furnished to
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* others, and derivative works that comment on or otherwise explain it
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* or assist in its implementation may be prepared, copied, published
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* and distributed, in whole or in part, without restriction of any
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* kind, provided that the above copyright notice and this paragraph are
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* included on all such copies and derivative works. However, this
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* document itself may not be modified in any way, such as by removing
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* the copyright notice or references to the Internet Society or other
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* Internet organizations, except as needed for the purpose of
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* developing Internet standards in which case the procedures for
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* copyrights defined in the Internet Standards process must be
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* followed, or as required to translate it into languages other than
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* English.
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*
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* The limited permissions granted above are perpetual and will not be
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* revoked by the Internet Society or its successors or assigns.
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*
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* This document and the information contained herein is provided on an
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* "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
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* TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
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* HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/*
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* sha1.h
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*
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* Description:
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* This is the header file for code which implements the Secure
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* Hashing Algorithm 1 as defined in FIPS PUB 180-1 published
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* April 17, 1995.
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*
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* Many of the variable names in this code, especially the
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* single character names, were used because those were the names
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* used in the publication.
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*
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* Please read the file sha1.c for more information.
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*
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*/
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#ifndef _SHA1_H_
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#define _SHA1_H_
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#include <stdint.h>
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/*
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* If you do not have the ISO standard stdint.h header file, then you
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* must typdef the following:
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* name meaning
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* uint32_t unsigned 32 bit integer
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* uint8_t unsigned 8 bit integer (i.e., unsigned char)
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* int_least16_t integer of >= 16 bits
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*
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*/
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#ifndef _SHA_enum_
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#define _SHA_enum_
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enum
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{
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shaSuccess = 0,
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shaNull, /* Null pointer parameter */
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shaInputTooLong, /* input data too long */
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shaStateError /* called Input after Result */
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};
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#endif
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#define SHA1HashSize 20
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/*
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* This structure will hold context information for the SHA-1
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* hashing operation
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*/
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typedef struct SHA1Context
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{
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uint32_t Intermediate_Hash[SHA1HashSize/4]; /* Message Digest */
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uint32_t Length_Low; /* Message length in bits */
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uint32_t Length_High; /* Message length in bits */
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/* Index into message block array */
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int_least16_t Message_Block_Index;
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uint8_t Message_Block[64]; /* 512-bit message blocks */
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int Computed; /* Is the digest computed? */
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int Corrupted; /* Is the message digest corrupted? */
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} SHA1Context;
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/*
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* Function Prototypes
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*/
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int SHA1Reset( SHA1Context *);
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int SHA1Input( SHA1Context *,
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const uint8_t *,
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unsigned int);
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int SHA1Result( SHA1Context *,
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uint8_t Message_Digest[SHA1HashSize]);
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#endif
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