mirror of https://gitlab.com/octospacc/SmolOTP.git
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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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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#define SHA1HashSize 20
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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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#define FLAG_COMPUTED 1
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#define FLAG_CORRUPTED 2
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/*
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* Data structure holding contextual information about the SHA-1 hash
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*/
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struct sha1
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{
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uint8_t Message_Block[64]; /* 512-bit message blocks */
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uint32_t Intermediate_Hash[5]; /* 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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uint16_t Message_Block_Index; /* Index into message block array */
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uint8_t flags;
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};
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/*
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* Public API
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*/
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int sha1_reset (struct sha1* context);
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int sha1_input (struct sha1* context, const uint8_t* message_array, unsigned length);
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int sha1_result(struct sha1* context, uint8_t Message_Digest[SHA1HashSize]);
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#endif /* #ifndef _SHA1_H_ */
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