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Revision as of 19:33, 4 November 2020 by Hdridder (talk | contribs) (Hdridder moved page OpenSSL to OpenSSL/SSH: Better covers the content)
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openssl rsa -text -noout -in id_rsa
Print out key attributes (o.a. key length)
openssl s_client -showcerts -connect <system>:<port>
Get the certificates available and test connectivity
openssl x509 -outform der -in <pemfile> -out <filename>.der -text
Convert to DER format.
ssh-keygen -t ed25519
Create a keypair (accept all defaults, put a password if you want)
ssh-keygen -y -f <privatkeyfile>
Print the public key for the private key in <privatkeyfile>