75 lines
2.8 KiB
Groff
75 lines
2.8 KiB
Groff
.\" $OpenBSD: md5.9,v 1.1 1996/04/17 21:40:14 mickey Exp $
|
|
.\"
|
|
.\" Copyright (c) 1996 Michael Shalayeff
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by Michael Shalayeff
|
|
.\" 3. The name of the author may not be used to endorse or promote products
|
|
.\" derived from this software without specific prior written permission
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.Dd April 17, 1996
|
|
.Dt MD5 9
|
|
.Os OpenBSD
|
|
.Sh NAME
|
|
.Nm MD5 ,
|
|
.Nm MD5Init ,
|
|
.Nm MD5Transform
|
|
.Nd message digest routines
|
|
.Sh SYNOPSIS
|
|
.Fd #include <sys/types.h>
|
|
.Fd #include <sys/md5.h>
|
|
.Ft void
|
|
.Fn MD5Init "MD5_CTX *buf"
|
|
.Ft void
|
|
.Fn MD5Transform "u_int32_t buf[4]" "const unsigned char block[64]"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
module implements the RSA Data Security, Inc. MD5 Message-Digest Algorithm
|
|
(MD5). It produces 128-bit MD5 Digest of data.
|
|
.Pp
|
|
.Bl -hang -width MD5Transformxxx
|
|
.It Pa MD5Init
|
|
must be called just before
|
|
.Fn MD5Transform
|
|
will be used to produce a digest. The
|
|
.Fa buf
|
|
argument is the storage for the digest being produced on subsequent
|
|
calls to the
|
|
.Fn MD5Transform
|
|
routine.
|
|
.It Pa MD5Transform
|
|
is the core of the MD5 algorithm, this alters an existing MD5 hash
|
|
kept in
|
|
.Fa buf
|
|
to reflect the addition of 64 characters
|
|
of new data passed in
|
|
.Fa block
|
|
argument.
|
|
.Sh 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".
|