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How to check if an ssh key has passphrase

on Jun 22, 2016

To check if an ssh key has passphrase, one can look for the presence of ENCRYPTED string in the private key. Here is an example

$ grep ENCRYPTED ~/id_rsa
Proc-Type: 4,ENCRYPTED


In case ENCRYPTED string is present, the key is encrypted and will need a passphrase during use.

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Posted in Tutorials | Tagged Linux, Linux/Unix Command Line, Mac, SSH, Tutorials, Ubuntu Linux
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