[Bug 3011] OPEN-SSH-8.0p1-KeyCompatibility Problem

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3011

Jakub Jelen <jjelen at redhat.com> changed:

           What    |Removed                     |Added
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                 CC|                            |jjelen at redhat.com

--- Comment #1 from Jakub Jelen <jjelen at redhat.com> ---
The OpenSSH since 7.8 generate new keys in the new format that is not
understood by OpenSSH 5.3. The release notes [1] explain it in a whole:

 * ssh-keygen(1): write OpenSSH format private keys by default
   instead of using OpenSSL's PEM format. The OpenSSH format,
   supported in OpenSSH releases since 2014 and described in the
   PROTOCOL.key file in the source distribution, offers substantially
   better protection against offline password guessing and supports
   key comments in private keys. If necessary, it is possible to write
   old PEM-style keys by adding "-m PEM" to ssh-keygen's arguments
   when generating or updating a key.

[1] http://www.openssh.com/txt/release-7.8

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