Java Security, 2nd Edition

Name

Class java.security.SignatureSpi

Synopsis

This is the service provider interface for the signature engine. If you want to implement your own signature engine, you must extend this class and register your implementation with an appropriate security provider. Since the Signature class already extends this class, your implementation may extend the Signature class directly. Implementations of this class must be prepared both to sign and to verify data that is passed to the engineUpdate( ) method. Initialization of the engine may optionally support a set of algorithm-specific parameters.

Class Definition

public abstract class java.security.SignatureSpi
	extends java.lang.Object {

	// Variables
	protected SecureRandom appRandom;

	// Constructors
	public SignatureSpi(  );

	// Instance Methods
	public Object clone(  );

	// Protected Instance Methods
	protected abstract Object engineGetParameter(String);
	protected abstract void engineInitSign(PrivateKey);
	protected void engineInitSign(PrivateKey, SecureRandom);
	protected abstract void engineInitVerify(PublicKey);
	protected abstract void engineSetParameter(String, Object);
	protected void engineSetParameter(AlgorithmParameterSpec);
	protected abstract byte[] engineSign(  );
	protected final int engineSign(byte[], int, int);
	protected abstract void engineUpdate(byte);
	protected abstract void engineUpdate(byte[], int, int);
	protected abstract boolean engineVerify(byte[]);
}

See also

Provider, Signature