[Bug 1853] sshd doesn't seem to be able to auth a user using an rsa key of 20000 bit

bugzilla-daemon at bugzilla.mindrot.org bugzilla-daemon at bugzilla.mindrot.org
Sat Feb 5 11:44:44 EST 2011


https://bugzilla.mindrot.org/show_bug.cgi?id=1853

--- Comment #2 from daveb <db.pub.mail at gmail.com> 2011-02-05 11:44:44 EST ---
(In reply to comment #1)
> This is not blocked in ssh but in OpenSSL. RSA keys larger than 16384
> bits are disallowed in it because of potential CPU resource overusage
> (effective DoS) on servers.

Oh ok that's interesting. I didn't know that. I couldn't find a size
limitation anywhere (other than ssh-keygen when generating a cert).

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