Create a new ssh key credential object reading the keys from memory.
@param out_ The newly created credential object.
@param username username to use to authenticate.
@param publickey The public key of the credential.
@param privatekey The private key of the credential.
@param passphrase The passphrase of the credential.
@return 0 for success or an error code for failure
Create a new ssh key credential object reading the keys from memory.
@param out_ The newly created credential object. @param username username to use to authenticate. @param publickey The public key of the credential. @param privatekey The private key of the credential. @param passphrase The passphrase of the credential. @return 0 for success or an error code for failure