md5.h

/*  $OpenBSD: md5.h,v 1.17 2012/12/05 23:19:57 deraadt Exp $    */
 
/*
 * This code implements the MD5 message-digest algorithm.
 * The algorithm is due to Ron Rivest.  This code was
 * written by Colin Plumb in 1993, no copyright is claimed.
 * This code is in the public domain; do with it what you wish.
 *
 * Equivalent code is available from RSA Data Security, Inc.
 * This code has been tested against that, and is equivalent,
 * except that you don't need to include two pages of legalese
 * with every copy.
 */
 
#ifndef _MD5_H_
#define _MD5_H_
 
/* ignore BSD-style attributes */
#pragma GCC diagnostic ignored "-Wattributes"
 
#include "openbsd_compat.h"
 
#define MD5_BLOCK_LENGTH        64
#define MD5_DIGEST_LENGTH       16
#define MD5_DIGEST_STRING_LENGTH    (MD5_DIGEST_LENGTH * 2 + 1)
 
typedef struct MD5Context {
    u_int32_t state[4];         /* state */
    u_int64_t count;            /* number of bits, mod 2^64 */
    u_int8_t buffer[MD5_BLOCK_LENGTH];  /* input buffer */
} MD5_CTX;
 
__BEGIN_DECLS
void     MD5Init(MD5_CTX *);
void     MD5Update(MD5_CTX *, const u_int8_t *, size_t)
        __attribute__((__bounded__(__string__,2,3)));
void     MD5Pad(MD5_CTX *);
void     MD5Final(u_int8_t [MD5_DIGEST_LENGTH], MD5_CTX *)
        __attribute__((__bounded__(__minbytes__,1,MD5_DIGEST_LENGTH)));
void     MD5Transform(u_int32_t [4], const u_int8_t [MD5_BLOCK_LENGTH])
        __attribute__((__bounded__(__minbytes__,1,4)))
        __attribute__((__bounded__(__minbytes__,2,MD5_BLOCK_LENGTH)));
char    *MD5End(MD5_CTX *, char *)
        __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
char    *MD5File(const char *, char *)
        __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
char    *MD5FileChunk(const char *, char *, off_t, off_t)
        __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
char    *MD5Data(const u_int8_t *, size_t, char *)
        __attribute__((__bounded__(__string__,1,2)))
        __attribute__((__bounded__(__minbytes__,3,MD5_DIGEST_STRING_LENGTH)));
__END_DECLS
 
#endif /* _MD5_H_ */