java.security
Class Signature

java.lang.Object
  java.security.SignatureSpi
      java.security.Signature

public abstract class Signature
extends SignatureSpi

Field Summary

protected static int	SIGN
protected int	state
protected static int	UNINITIALIZED
protected static int	VERIFY

Fields inherited from class java.security.SignatureSpi

appRandom

Constructor Summary

protected

Signature(String algorithm)

Method Summary

Object	clone() Returns a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
String	getAlgorithm()
static Signature	getInstance(String algorithm)
static Signature	getInstance(String algorithm, Provider provider)
static Signature	getInstance(String algorithm, String provider)
Object	getParameter(String param) Deprecated. There is no generally accepted parameter naming convention.
AlgorithmParameters	getParameters()
Provider	getProvider()
void	initSign(PrivateKey privateKey)
void	initSign(PrivateKey privateKey, SecureRandom random)
void	initVerify(Certificate certificate)
void	initVerify(PublicKey publicKey)
void	setParameter(AlgorithmParameterSpec params)
void	setParameter(String param, Object value) Deprecated. Use setParameter
byte[]	sign()
int	sign(byte[] outbuf, int offset, int len)
String	toString() Returns a string containing a concise, human-readable description of the receiver.
void	update(byte b)
void	update(byte[] data)
void	update(byte[] data, int off, int len)
void	update(ByteBuffer data)
boolean	verify(byte[] signature)
boolean	verify(byte[] signature, int offset, int length)

Methods inherited from class java.security.SignatureSpi

engineGetParameter, engineGetParameters, engineInitSign, engineInitSign, engineInitVerify, engineSetParameter, engineSetParameter, engineSign, engineSign, engineUpdate, engineUpdate, engineUpdate, engineVerify, engineVerify

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

UNINITIALIZED

protected static final int UNINITIALIZED

See Also:

Constant Field Values

SIGN

protected static final int SIGN

See Also:

Constant Field Values

VERIFY

protected static final int VERIFY

See Also:

Constant Field Values

state

protected int state

Constructor Detail

Signature

protected Signature(String algorithm)

Method Detail

getInstance

public static Signature getInstance(String algorithm)
                             throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

getInstance

public static Signature getInstance(String algorithm,
                                    String provider)
                             throws NoSuchAlgorithmException,
                                    NoSuchProviderException

Throws:

NoSuchAlgorithmException

NoSuchProviderException

getInstance

public static Signature getInstance(String algorithm,
                                    Provider provider)
                             throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

getProvider

public final Provider getProvider()

getAlgorithm

public final String getAlgorithm()

initVerify

public final void initVerify(PublicKey publicKey)
                      throws InvalidKeyException

Throws:

InvalidKeyException

initVerify

public final void initVerify(Certificate certificate)
                      throws InvalidKeyException

Throws:

InvalidKeyException

initSign

public final void initSign(PrivateKey privateKey)
                    throws InvalidKeyException

Throws:

InvalidKeyException

initSign

public final void initSign(PrivateKey privateKey,
                           SecureRandom random)
                    throws InvalidKeyException

Throws:

InvalidKeyException

sign

public final byte[] sign()
                  throws SignatureException

Throws:

SignatureException

sign

public final int sign(byte[] outbuf,
                      int offset,
                      int len)
               throws SignatureException

Throws:

SignatureException

verify

public final boolean verify(byte[] signature)
                     throws SignatureException

Throws:

SignatureException

verify

public final boolean verify(byte[] signature,
                            int offset,
                            int length)
                     throws SignatureException

Throws:

SignatureException

update

public final void update(byte b)
                  throws SignatureException

Throws:

SignatureException

update

public final void update(byte[] data)
                  throws SignatureException

Throws:

SignatureException

update

public final void update(byte[] data,
                         int off,
                         int len)
                  throws SignatureException

Throws:

SignatureException

update

public final void update(ByteBuffer data)
                  throws SignatureException

Throws:

SignatureException

toString

public String toString()

Description copied from class: Object

Returns a string containing a concise, human-readable description of the receiver.

Overrides:

toString in class Object

Returns:

String a printable representation for the receiver.

setParameter

public final void setParameter(String param,
                               Object value)
                        throws InvalidParameterException

Deprecated. Use setParameter

Throws:

InvalidParameterException

setParameter

public final void setParameter(AlgorithmParameterSpec params)
                        throws InvalidAlgorithmParameterException

Throws:

InvalidAlgorithmParameterException

getParameters

public final AlgorithmParameters getParameters()

getParameter

public final Object getParameter(String param)
                          throws InvalidParameterException

Deprecated. There is no generally accepted parameter naming convention.

Throws:

InvalidParameterException

clone

public Object clone()
             throws CloneNotSupportedException

Description copied from class: Object

Returns a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.

Classes which wish to support cloning must specify that they implement the Cloneable interface, since the implementation checks for this.

Overrides:

clone in class SignatureSpi

Returns:

Object a shallow copy of this object.

Throws:

CloneNotSupportedException - if the receiver's class does not implement the interface Cloneable.