OpenSSH / OpenSSL snippets, the stuff you forget

There are times when you can’t remember everything, this post is for those times, when it involves OpenSSH / OpenSSL.

Adding password to an existing ssh key

ssh-keygen -p -f {file_name}

Generating SSL key (RSA 2048-bit SHA2)

openssl req -utf8 -nodes -sha256 -newkey rsa:2048 -keyout private.key -out signing_req.csr

Adding password to an existing SSL key (AES256 encryption)

openssl rsa -aes256 -in private.key -out private_encrypted.key

Remember to (securely) delete the unencrypted private.key file!

Remove password from existing SSL key

openssl rsa -in private_encrypted.key -out private.key

That’s it for now, will add more as I come across them.