freebsd man page for md5transform

MD5(9)							   BSD Kernel Developer's Manual						    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(uint32_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 alters an existing MD5 hash kept in buf to reflect the addition of 64 characters of
		      new data passed in block argument.

COPYRIGHTS
     The code for MD5 transform was taken from Colin Plumb's implementation, which has been placed in the public domain.  The MD5 cryptographic
     checksum was devised by Ronald Rivest, and is documented in RFC 1321, "The MD5 Message Digest Algorithm".

BSD
								  April 17, 1996							       BSD