Default key algorithm

[buttercookie42]

According to the help, the default algorithm for generating new keys is RSA/ECB/PKCS1Padding, however if I actually run the generateKeys command without explicitly specifying the algorithm, the algorithm string in the serialised key file ends up as only RSA. This then subsequently causes compatibility problems with Android, which needs the full algorithm specification in order to end up using the exact same cipher as desktop Java (see https://github.com/verhas/License3j/pull/95).