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From Nick Couchman <>
Subject Re: SSH and ED25519 not supported?
Date Thu, 30 May 2019 15:07:03 GMT
On Thu, May 30, 2019 at 9:24 AM Thomas Plant <>

> Hi,
> installed guacamole 1.0.0 with MySQL database and Centos 7 as OS. I am
> trying to setup an ssh connection with an ED25519 key.
> On connection I get the following error:
> May 30 14:10:40 Guacamole guacd[31189]: Auth key import failed: (null)
> May 30 14:10:40 Guacamole guacd: guacd[31189]: ERROR:#011Auth key import
> failed: (null)
> Is this not supported in 1.0.0? Found following thread:
> Which says that it should work. Or do I have to compile from the git
> sources?
guacd relies on libssh2 for support for various SSH-related functions,
including the key formats.  CentOS7 ships with a pretty old version of
libssh2, one which I believe lacks support for the key formats you
mentioned.  You may need to update the version of libssh2 on your CentOS
install in order to get it to work properly.


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