[jdev] MD5 auth problem

Tony Finch dot at dotat.at
Thu May 25 07:40:48 CDT 2006


On Thu, 25 May 2006, Dave Cridland wrote:
>
> Consider the case where the server is compromised.

A client compromise is much more likely :-)

> If you use DIGEST-MD5, then the attacker only has a plaintext equivalent good
> enough to authenticate with the compromised server, and cannot obtain anything
> better from the authentication process on the wire - if the server is
> compromised, therefore, you've lost privacy, but not your password.

AFAIK most DIGEST-MD5 implementations keep bare passwords on the server,
so a server compromise would expose them all.

Tony.
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