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From Stefan Bodewig <bode...@apache.org>
Subject Re: cvs commit: ant/docs/manual/CoreTasks checksum.html
Date Wed, 16 Feb 2005 14:54:43 GMT
On Wed, 16 Feb 2005, Dominique Devienne <DDevienne@lgc.com> wrote:

> You mean that the MD5 and SHA-1 digests computed by the JDK-provided
> libraries didn't generate the canonical values of these digests? 

No, broken as in "sucessfully attacked".

It is possible to create a file that matches the checksum you've
created, but is different from the original without using a
brute-force algorithm.

The way to attack MD5 turns out to be rather easy while the way to do
it for SHA-1 still involves using a lot of CPU cycles.

Stefan

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