See if ssh key uses a pass phrase

falsepositive

< Packstation Phishing | 1995-* >

See if ssh key uses a pass phrase Wed, Jan 27. 2010

I don't quite see an option to ssh-keygen and the lot to check whether a ssh key uses a pass phrase or not.

It is possible though to create a public key from a private key using ssh-keygen -y ~/.ssh/id_rsa. Thus providing you with a password prompt in case you have a pass phrase defined.

In case you know of any option to directly tell if there is a pass phrase, please comment to let me know :)
Posted by Sebastian Raible Comment: (1) Trackbacks: (0)
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#1 - _ 2010-01-28 15:12 - (Reply)

openssl rsa -in ~/.ssh/your_private_key will prompt for a password if necessary.

Here I can do:
#head -n2 .ssh/test
-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED

If you see this second line ("Proc-Type...ENCRYPTED) you know the key uses an password


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