passphrase
Passphrase to associate with the encrypted exported private key.
When creating your passphrase, you can use any ASCII character except #, $, or %.
If you want to later decrypt the private key, you must have the passphrase. You can use the following OpenSSL command to decrypt a private key. After entering the command, you are prompted for the passphrase.
openssl rsa -in encrypted_key.pem -out decrypted_key.pem