md5(9)

NAME

MD5, MD5Init, MD5Transform - message digest routines

SYNOPSIS

#include <sys/types.h>
#include <sys/md5.h>
void
MD5Init(MD5_CTX *buf);
void
MD5Transform(u_int32_t   buf[4],   const    unsigned    char
block[64]);

DESCRIPTION

The MD5 module implements the RSA Data Security, Inc. MD5

Message-Digest
Algorithm (MD5). It produces 128-bit MD5 Digest of data.

MD5Init must be called just before MD5Transform()

will be used

to produce a digest. The buf argument is

the storage
for the digest being produced on subsequent

calls to the
MD5Transform() routine.

MD5Transform is the core of the MD5 algorithm, this al

ters an exist

ing MD5 hash kept in buf to reflect the ad

dition of 64
characters of new data passed in block ar

gument.

COPYRIGHTS

The code for MD5 transform was taken from Colin Plumb's im

plementation,
which has been placed in the public domain. The MD5 crypto

graphic checksum was devised by Ronald Rivest, and is documented in RFC

1321, "The MD5
Message Digest Algorithm".

BSD April 17, 1996

BSD