This abstract class defines the
service-provider interface for KeyAgreement. A
cryptographic provider must implement a concrete subclass of this
class for each encryption algorithm it supports. Applications never
need to use or subclass this class.
public abstract class
KeyAgreementSpi {
// Public Constructors
public
KeyAgreementSpi ( );
// Protected Instance Methods
protected abstract java.security.Key
engineDoPhase (java.security.Key
key ,
boolean
lastPhase ) throws java.security.InvalidKeyException,
IllegalStateException;
protected abstract byte[ ]
engineGenerateSecret ( ) throws IllegalStateException;
protected abstract SecretKey
engineGenerateSecret (String
algorithm )
throws IllegalStateException,
java.security.NoSuchAlgorithmException,
java.security.InvalidKeyException;
protected abstract int
engineGenerateSecret (byte[ ]
sharedSecret , int
offset )
throws IllegalStateException, ShortBufferException;
protected abstract void
engineInit (java.security.Key
key ,
java.security.SecureRandom
random )
throws java.security.InvalidKeyException;
protected abstract void
engineInit (java.security.Key
key ,
java.security.spec.AlgorithmParameterSpec
params ,
java.security.SecureRandom
random )
throws java.security.InvalidKeyException,
java.security.InvalidAlgorithmParameterException;
}