A specification of Key Derivation Function (KDF) parameters.

The purpose of this interface is to group (and provide type safety for) all KDF parameter specifications. All KDF parameter specifications must implement this interface.

When supplied, the KDF.getInstance methods return a KDF that is initialized with the specified parameters.

The KDFParameters used for initialization are returned by KDF#getParameters() and may contain additional default or random parameter values used by the underlying KDF implementation.