ruby-dev

In message <412ADB3A.40003@ruby-lang.org>
	on Tue, 24 Aug 2004 15:07:57 +0900,
	Shugo Maeda <shugo@ruby-lang.org> wrote:
> > などが考えられますね。後者の方が実現は簡単だけど。
> 
> 後者とすると、ハッシュ関数はどれがいいでしょう。
> この用途ならMD5でもいいですかね。
わざわざMD5ではなく、SHA1あたりの方がよいと思います。

某pkgsrcの世界でも、割りと前に配布ファイルの確認のための情報がファイル
のMD5から、ファイルのSHA1とサイズに変わりました。その昔(の相当する内容)
なら、

% cd /usr/pkgsrc/x11/ruby-tk
% cat files/md5
$NetBSD: ... Exp $

MD5 (ruby/ruby-1.6.8.tar.gz) = bf48d49dbd94b5c0eda5f75b3bfbac16

でしたが、今は、

% cd /usr/pkgsrc/x11/ruby-tk
% cat distinfo
$NetBSD: distinfo,v 1.4 2003/03/24 15:01:16 taca Exp $

SHA1 (ruby/ruby-1.6.8.tar.gz) = 4b475ac1c837cd62b6dfe85359e1502a71b08cd1
Size (ruby/ruby-1.6.8.tar.gz) = 1023403 bytes
SHA1 (patch-aa) = 5475a1e164c8b77ba82309ca0a3104abd3a4e78f

となってます。

-- 
神戸 隆博 / Takahiro Kambe

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