Verify host key in JSch with public key in “SSH2 PUBLIC KEY” format (RFC 4716)

问题

I am facing a problem with UnknownHostKey: servername, when trying to verify the host key using:

jsch.setKnownHosts("target/hostname_keys");

Is it possible to use hostkey file in SSH2 format that looks like this

---- BEGIN SSH2 PUBLIC KEY ----
AAAAB3NzaC1kc3MAAACBAKKQ7hwq7
.....
w5Uw==
---- END SSH2 PUBLIC KEY ----

with JSch?

Is there some good libraries that can work with SSH2 keys?

回答1:

JSch does not support public keys in this format.

But it's easy to convert that to known_hosts format.

Basically, just merge the lines into one and prepend a hostname:

example.com AAAAB3NzaC1kc3MAAACBAKKQ7hwq7...w5Uw==

来源：https://stackoverflow.com/questions/55734483/verify-host-key-in-jsch-with-public-key-in-ssh2-public-key-format-rfc-4716