/*
 * SHA-1 in C
 * By Steve Reid <steve@edmweb.com>
 * 100% Public Domain
 */

#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif

#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#define SHA1_BLOCK_LENGTH       64
#define SHA1_DIGEST_LENGTH      20

typedef struct {
	uint32_t state[5];
	uint32_t count[2];  
	uint8_t buffer[SHA1_BLOCK_LENGTH];
} SHA1_CTX;
  
void	SHA1Transform(uint32_t state[5], const uint8_t buffer[SHA1_BLOCK_LENGTH]);
void	SHA1Init(SHA1_CTX *context);
void	SHA1Update(SHA1_CTX *context, const uint8_t *data, size_t len);
void	SHA1Final(SHA1_CTX *context, uint8_t digest[SHA1_DIGEST_LENGTH]);