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