SignatureSpi

SignatureSpi

java.security

---

Java 1.2

This abstract class defines the service-provider interface for Signature . A security provider must implement a concrete subclass of this class for each digital signature algorithm it supports. Applications never need to use or subclass this class.

 public abstract class  SignatureSpi  {  // Public Constructors  public  SignatureSpi  ( );  // Public Methods Overriding Object  public Object  clone  ( ) throws CloneNotSupportedException;  // Protected Instance Methods   1.4  protected AlgorithmParameters  engineGetParameters  ( );        protected abstract void  engineInitSign  (PrivateKey  privateKey  )          throws InvalidKeyException;        protected void  engineInitSign  (PrivateKey  privateKey  , SecureRandom  random  )          throws InvalidKeyException;        protected abstract void  engineInitVerify  (PublicKey  publicKey  )          throws InvalidKeyException;        protected void  engineSetParameter  (java.security.spec.         AlgorithmParameterSpec  params  )          throws InvalidAlgorithmParameterException;        protected abstract byte[ ]  engineSign  ( ) throws SignatureException;        protected int  engineSign  (byte[ ]  outbuf  , int  offset  , int  len  )          throws SignatureException;  5.0  protected void  engineUpdate  (java.nio.ByteBuffer  input  );        protected abstract void  engineUpdate  (byte  b  ) throws SignatureException;        protected abstract void  engineUpdate  (byte[ ]  b  , int  off  , int  len  )          throws SignatureException;        protected abstract boolean  engineVerify  (byte[ ]  sigBytes  )          throws SignatureException;  1.4  protected boolean  engineVerify  (byte[ ]  sigBytes  , int  offset  , int  length  )          throws SignatureException;  // Protected Instance Fields  protected SecureRandom  appRandom  ;  // Deprecated Protected Methods   #  protected abstract Object  engineGetParameter  (String  param  )          throws InvalidParameterException;  #  protected abstract void  engineSetParameter  (String  param  , Object  value  )          throws InvalidParameterException;   } 

Subclasses

Signature