Signature.engineGetParameter
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protected abstract Object engineGetParameter( String param ) throws InvalidParameterException
Parameters
- param
- the string name of the parameter.
Returns
the object that represents the parameter value, or null if
there is none.
Description
SPI: Gets the value of the specified algorithm parameter.
This method supplies a general-purpose mechanism through which it
is possible to get the various parameters of this object. A parameter
may be any settable parameter for the algorithm, such as a parameter
size, or a source of random bits for signature generation (if
appropriate), or an indication of whether or not to perform a
specific but optional computation. A uniform algorithm-specific
naming scheme for each parameter is desirable but left unspecified
at this time.
Exceptions
InvalidParameterException
if param is an
invalid parameter for this engine, or another exception occurs while
trying to get this parameter.