protected abstract void engineInit (Key key, AlgorithmParameters params) throws InvalidKeyException, InvalidAlgorithmParameterException, ExemptionMechanismException

Initializes this exemption mechanism with a key and a set of algorithm parameters.

If this exemption mechanism requires any algorithm parameters and params is null, the underlying exemption mechanism implementation is supposed to generate the required parameters itself (using provider-specific default values); in the case that algorithm parameters must be specified by the caller, an InvalidAlgorithmParameterException is raised.

key    the key for this exemption mechanism
params    the algorithm parameters

InvalidKeyException    if the given key is inappropriate for this exemption mechanism.
InvalidAlgorithmParameterException    if the given algorithm parameters are inappropriate for this exemption mechanism.
ExemptionMechanismException    if problem(s) encountered in the process of initializing.