[Cyberduck-trac] [Cyberduck] #9246: Cyberduck fails to handle PKA with 8192-bit private key

Cyberduck trac at trac.cyberduck.io
Fri Feb 5 14:15:18 UTC 2016

#9246: Cyberduck fails to handle PKA with 8192-bit private key
    Reporter:  ardiefox     |      Owner:  dkocher
        Type:  enhancement  |     Status:  new
    Priority:  low          |  Milestone:
   Component:  sftp         |    Version:  4.7.3
    Severity:  trivial      |   Keywords:
Architecture:               |   Platform:  Windows 10
 Dear developers,

 Yes, I know this might sound absurd, but since PuTTY is handling 8192-bit
 private key very well, I think it would be good to see Cyberduck also
 support key size of 4096+.

 So, here are some details:[[BR]]
 I generated a new pair of key using my FreeBSD machine's bundled OpenSSH*:
 {{{ssh-keygen -trsa -b8192}}}. Then I imported the key into PuTTYgen,
 saved as PuTTY Private Key format.[[BR]]
 Now, PuTTY handles this very well; I can log into both FreeBSD and Debian
 machines I have. Even logging into each other using OS bundled SSH client
 was successful. Only Cyberduck is complaining about the key size. (I
 attached the complaint Cyberduck was quacking.)

 I hope to see Cyberduck supporting this soon. :)

 * {{{OpenSSH_6.6.1p1, OpenSSL 1.0.1p-freebsd 9 Jul 2015}}}

Ticket URL: <https://trac.cyberduck.io/ticket/9246>
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