d100276457
Submitted by: Akira Ikeuchi <a_ikeuchi@mic.mitsumi.co.jp> Reviewed by: Watanabe Kazuhiro <CQG00620@nifty.ne.jp>
77 lines
2.9 KiB
Groff
77 lines
2.9 KiB
Groff
.\" $OpenBSD: md5.9,v 1.1 1996/04/17 21:40:14 mickey Exp $
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.\"
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.\" Copyright (c) 1996 Michael Shalayeff
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Michael Shalayeff
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" %FreeBSD: src/share/man/man9/MD5.9,v 1.10 2004/07/03 18:29:23 ru Exp %
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.\"
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.\" $FreeBSD$
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.Dd April 17, 1996
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.Dt MD5 9
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.Os
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.Sh 名称
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.Nm MD5 ,
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.Nm MD5Init ,
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.Nm MD5Transform
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.Nd メッセージダイジェストルーチン
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.Sh 書式
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.In sys/types.h
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.In sys/md5.h
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.Ft void
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.Fn MD5Init "MD5_CTX *buf"
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.Ft void
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.Fn MD5Transform "u_int32_t buf[4]" "const unsigned char block[64]"
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.Sh 解説
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.Nm
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モジュールは、RSA Data Security, Inc.\& の MD5 メッセージダイジェスト
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アルゴリズム(MD5)を実装しています。
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これはデータの 128 ビットの MD5 ダイジェストを生成します。
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.Pp
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.Bl -hang -width MD5Transformxx
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.It Pa MD5Init
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ダイジェストを生成するために
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.Fn MD5Transform
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を使用する直前に呼び出さなくてはなりません。
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引数
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.Fa buf
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は次に続いて呼ばれる
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.Fn MD5Transform
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ルーチンが生成するダイジェストの格納領域です。
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.It Pa MD5Transform
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MD5 アルゴリズムの中核で、
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引数
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.Fa block
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で渡される 64 文字の新しいデータの追加を反映するように、
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.Fa buf
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に格納してある MD5 ハッシュを変更します。
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.El
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.Sh 著作権
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MD5 変換のコードはパブリックドメインに置かれていた Colin Plumb の
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実装から得ています。
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MD5 暗号化チェックサムは Ronald Rivest が考案し、
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RFC 1321 "The MD5 Message Digest Algorithm" に記述されています。
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