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37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
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/*********************************************************************
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* Filename: sha1.h
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* Author: Brad Conte (brad AT bradconte.com)
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* Copyright:
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* Disclaimer: This code is presented "as is" without any guarantees.
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* Details: Defines the API for the corresponding SHA1 implementation.
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*********************************************************************/
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#ifndef SHA1_H
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#define SHA1_H
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/*************************** HEADER FILES ***************************/
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#include <stddef.h>
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#include <inttypes.h>
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/****************************** MACROS ******************************/
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#define SHA1_BLOCK_SIZE 20 // SHA1 outputs a 20 byte digest
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/**************************** DATA TYPES ****************************/
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typedef uint8_t BYTE; // 8-bit byte
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typedef uint32_t WORD; // 32-bit word, change to "long" for 16-bit machines
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typedef struct {
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BYTE data[64];
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WORD datalen;
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unsigned long long bitlen;
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WORD state[5];
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WORD k[4];
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} SHA1_CTX;
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/*********************** FUNCTION DECLARATIONS **********************/
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void sha1_init(SHA1_CTX *ctx);
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void sha1_update(SHA1_CTX *ctx, const BYTE data[], size_t len);
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void sha1_final(SHA1_CTX *ctx, BYTE hash[]);
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#endif // SHA1_H
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