ssh private key/certificate Passphrase

Currently the use of ssh identities used by SSH enabled Datasources do not take into account the use of passphrases to protect the private keys 

e.g

jsch.addIdentity(cert)

rather than 

jsch.addIdentity(cert,passphrase)

I'd like to request an enhancement that an optional passphrase can be defined as a property (ssh.cert.pass ?) which if present is passed on the AddIdentity call