/* $OpenBSD: sha1.h,v 1.5 2007/09/10 22:19:42 henric Exp $  */

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

#if defined(HAVE_OPENSSL) && !defined(HAVE_WIN32)
#include <openssl/sha.h>
#elif !defined(_SHA1_H_)
#define _SHA1_H_

#define SHA1_BLOCK_LENGTH 64
#define SHA1_DIGEST_LENGTH 20

typedef struct {
  u_int32_t state[5];
  u_int32_t count[2];
  unsigned char buffer[SHA1_BLOCK_LENGTH];
} SHA1_CTX;

void SHA1Init(SHA1_CTX* context);
void SHA1Transform(u_int32_t state[5],
                   const unsigned char buffer[SHA1_BLOCK_LENGTH]);
void SHA1Update(SHA1_CTX* context, const unsigned char* data, unsigned int len);
void SHA1Final(unsigned char digest[SHA1_DIGEST_LENGTH], SHA1_CTX* context);

#endif /* _SHA1_H_ */
