[CentOS-announce] Using sha256sum instead of md5sum for package checksums

[Johnny Hughes]

There are known Collision Attacks for the MD5SUM method of hashing, so
it is possible to modify a file and make it have the same MD5SUM as
another file.  See this link for details on Collision Attacks:

http://en.wikipedia.org/wiki/Collision_attack

Recommendation from the US-CERT concerning MD5SUM hashes:

http://www.kb.cert.org/vuls/id/836068

Based on the above information, the CentOS team will be using sha256sum
(sha-2) and not md5sum to generate future hashes for posting on our
e-mail announcements to the CentOS Announce Mailing List.

Thanks,
Johnny Hughes
The CentOS Project

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