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[ldid.git] / sha1.h

/*\r
 *  sha1.h\r
 *\r
 *  Description:\r
 *      This is the header file for code which implements the Secure\r
 *      Hashing Algorithm 1 as defined in FIPS PUB 180-1 published\r
 *      April 17, 1995.\r
 *\r
 *      Many of the variable names in this code, especially the\r
 *      single character names, were used because those were the names\r
 *      used in the publication.\r
 *\r
 *      Please read the file sha1.c for more information.\r
 *\r
 */\r
\r
#ifndef _SHA1_H_\r
#define _SHA1_H_\r
\r
#include <stdint.h>\r
\r
#ifndef _SHA_enum_\r
#define _SHA_enum_\r
enum\r
{\r
    shaSuccess = 0,\r
    shaNull,            /* Null pointer parameter */\r
    shaInputTooLong,    /* input data too long */\r
    shaStateError       /* called Input after Result */\r
};\r
#endif\r
#define SHA1HashSize 20\r
\r
/*\r
 *  This structure will hold context information for the SHA-1\r
 *  hashing operation\r
 */\r
typedef struct SHA1Context\r
{\r
    uint32_t Intermediate_Hash[SHA1HashSize/4]; /* Message Digest  */\r
\r
    uint32_t Length_Low;            /* Message length in bits      */\r
    uint32_t Length_High;           /* Message length in bits      */\r
\r
                               /* Index into message block array   */\r
    int_least16_t Message_Block_Index;\r
    uint8_t Message_Block[64];      /* 512-bit message blocks      */\r
\r
    int Computed;               /* Is the digest computed?         */\r
    int Corrupted;             /* Is the message digest corrupted? */\r
} SHA1Context;\r
\r
/*\r
 *  Function Prototypes\r
 */\r
\r
int SHA1Reset(  SHA1Context *);\r
int SHA1Input(  SHA1Context *,\r
                const uint8_t *,\r
                unsigned int);\r
int SHA1Result( SHA1Context *,\r
                uint8_t Message_Digest[SHA1HashSize]);\r
\r
#endif\r