Re: OpenSSH & S/Key information leakage

["Pavel Kankovsky" <peak () argo troja mff cuni cz>]

On Thu, 15 Nov 2001, Alan J Rosenthal wrote:

> A login prompt for a non-account looks like this:
>
>       login: flomp
>       otp-md5 175 at2078 ext
>       Response: 
>
> So far, so good.  But press return once or twice to get "Login incorrect"
> (or make a new conection), and then do
>
>       login: flomp
>       otp-md5 220 at0624 ext
>       Response: 
>
> Either the user just set a new passphrase in this one-second interval, or
> "flomp" does not exist.

Seed the PRNG generating this fake challenge with the given username and
nothing but the username (and perhaps some *static* secret data).

--Pavel Kankovsky aka Peak  [ Boycott Microsoft--http://www.vcnet.com/bms ]
"Resistance is futile. Open your source code and prepare for assimilation."