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Re: Performance: MD4 vs MD5

From: Bryan O'Sullivan <bos_at_serpentine.com>
Date: 2003-04-25 19:45:23 CEST

On Fri, 2003-04-25 at 10:39, Sander Roobol wrote:
> When it came to my attention that Subversion uses MD5 for it's checksums, I
> suddenly remembered that MD5 was designed as a safer but slower version of MD4.
> This is what RFC 1321 (MD5 Message-Digest Algorithm) says:

Your data are *extremely* old. The problem with MD4 is that it's easy
to generate collisions, to the point where it's likely to be a practical
concern for a repository storing a fairly large number of files. That
trumps any performance concerns.

Nobody uses MD5 for cryptographic integrity in new software, so that's
not really an issue.


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Received on Fri Apr 25 19:46:18 2003

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