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cryptix.jce.provider.dsa
Class RawDSASignature  

java.lang.Object
  java.security.SignatureSpi
      cryptix.jce.provider.dsa.RawDSASignature

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public final class RawDSASignature

extends java.security.SignatureSpi

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Field Summary
private  byte[]	buf
private  int	bufPtr
private  java.math.BigInteger	g
private  java.math.BigInteger	p
private  java.math.BigInteger	q
private  java.security.SecureRandom	random
private  java.math.BigInteger	x
private  java.math.BigInteger	y
private  java.math.BigInteger	ZERO           Puke, we need this because JDK 1.1.x doesn't have BigInteger.ZERO :-(

 

Fields inherited from class java.security.SignatureSpi

appRandom

 

Constructor Summary

RawDSASignature()

 

Method Summary
private  void	burn()           Try and zero all potentially sensitive data.
protected  java.lang.Object	engineGetParameter(java.lang.String param)           deprecated
protected  void	engineInitSign(java.security.PrivateKey key)           Initializes this instance with the private key for signing purposes.
protected  void	engineInitSign(java.security.PrivateKey key, java.security.SecureRandom random)           Initializes this instance with the private key and source of randomness for signing purposes.
protected  void	engineInitVerify(java.security.PublicKey key)           Initializes this instance with the public key for verification purposes.
protected  void	engineSetParameter(java.security.spec.AlgorithmParameterSpec params)           Sets the signature engine with the specified java.security.spec.AlgorithmParameterSpec.
protected  void	engineSetParameter(java.lang.String param, java.lang.Object value)           deprecated
protected  byte[]	engineSign()           Returns a signature over the accumulated data.
protected  void	engineUpdate(byte b)           Updates the data to be signed or verified with the specified byte.
protected  void	engineUpdate(byte[] in, int offset, int length)           Updates the data to be signed or verified with the specified bytes.
protected  boolean	engineVerify(byte[] signature)           Verifies a designated signature.
private  boolean	validate()           Check our invariants.

 

Methods inherited from class java.security.SignatureSpi

clone, engineGetParameters, engineSign, engineVerify

 

Methods inherited from class java.lang.Object

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

 

Field Detail

ZERO

private java.math.BigInteger ZERO

Puke, we need this because JDK 1.1.x doesn't have BigInteger.ZERO :-(

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x

private java.math.BigInteger x

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y

private java.math.BigInteger y

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g

private java.math.BigInteger g

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p

private java.math.BigInteger p

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q

private java.math.BigInteger q

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buf

private final byte[] buf

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bufPtr

private int bufPtr

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random

private java.security.SecureRandom random

Constructor Detail

RawDSASignature

public RawDSASignature()

Method Detail

engineInitVerify

protected void engineInitVerify(java.security.PublicKey key)
                         throws java.security.InvalidKeyException

Description copied from class: java.security.SignatureSpi

Initializes this instance with the public key for verification purposes.

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engineInitSign

protected void engineInitSign(java.security.PrivateKey key)
                       throws java.security.InvalidKeyException

Description copied from class: java.security.SignatureSpi

Initializes this instance with the private key for signing purposes.

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engineInitSign

protected void engineInitSign(java.security.PrivateKey key,
                              java.security.SecureRandom random)
                       throws java.security.InvalidKeyException

Description copied from class: java.security.SignatureSpi

Initializes this instance with the private key and source of randomness for signing purposes.

This method cannot be abstract for backward compatibility reasons.

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engineUpdate

protected void engineUpdate(byte b)
                     throws java.security.SignatureException

Description copied from class: java.security.SignatureSpi

Updates the data to be signed or verified with the specified byte.

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engineUpdate

protected void engineUpdate(byte[] in,
                            int offset,
                            int length)
                     throws java.security.SignatureException

Description copied from class: java.security.SignatureSpi

Updates the data to be signed or verified with the specified bytes.

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engineSign

protected byte[] engineSign()
                     throws java.security.SignatureException

Returns a signature over the accumulated data.

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engineVerify

protected boolean engineVerify(byte[] signature)
                        throws java.security.SignatureException

Description copied from class: java.security.SignatureSpi

Verifies a designated signature.

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engineSetParameter

protected void engineSetParameter(java.lang.String param,
                                  java.lang.Object value)
                           throws java.security.InvalidParameterException

deprecated

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engineSetParameter

protected void engineSetParameter(java.security.spec.AlgorithmParameterSpec params)
                           throws java.security.InvalidAlgorithmParameterException

Description copied from class: java.security.SignatureSpi

Sets the signature engine with the specified java.security.spec.AlgorithmParameterSpec.

This method cannot be abstract for backward compatibility reasons. By default it always throws java.lang.UnsupportedOperationException unless overridden.

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engineGetParameter

protected java.lang.Object engineGetParameter(java.lang.String param)
                                       throws java.security.InvalidParameterException

deprecated

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burn

private void burn()

Try and zero all potentially sensitive data. This is not secure because we cannot control memory allocation, garbage collection and swapping. It's the best we can do though, apart from changing the JVM.

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validate

private boolean validate()

Check our invariants.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> cryptix >> jce >> provider >> [ dsa overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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