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