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Victor Sundin commented on GUACAMOLE-745: ----------------------------------------- I got so fed up with this, but finally got it working without the use of the ssh-keygen utility.... The commands below will get you the correct headers {code:java} KEYFILE=~/.ssh/<keyname>{code} {code:java} openssl genrsa -out ${KEYFILE} 2048{code} {code:java} ssh-keygen -y -f ${KEYFILE} > ${KEYFILE}.pub {code} > Add support for OpenSSH private key format > ------------------------------------------ > > Key: GUACAMOLE-745 > URL: https://issues.apache.org/jira/browse/GUACAMOLE-745 > Project: Guacamole > Issue Type: Improvement > Components: guacd, SSH > Environment: Docker official images 1.0.0 > Reporter: Julien Nicoulaud > Priority: Minor > > Since OpenSSH 7.8, {{ssh-keygen}} does not generate keys in PEM format by > default anymore: [https://www.openssh.com/txt/release-7.8] > Attempting to use keys in the new format in Guacamole does not work, and does > not print any helpful error message even in debug mode: > {code:java} > guacd_1 | guacd[296]: DEBUG: Attempting private key import > (WITHOUT passphrase) > guacd_1 | guacd[296]: DEBUG: Initial import failed: (null) > guacd_1 | guacd[296]: DEBUG: Re-attempting private key import > (WITH passphrase) > guacd_1 | guacd[296]: ERROR: Auth key import failed: (null){code} > It would be nice if keys in OpenSSH new format were supported. At least a > more helpful error message should be printed (like "unrecognized key format"). -- This message was sent by Atlassian Jira (v8.3.4#803005)