edu.vt.middleware.crypt.signature
Class ECDSASignature

java.lang.Object
  edu.vt.middleware.crypt.AbstractAlgorithm
      edu.vt.middleware.crypt.signature.SignatureAlgorithm
          edu.vt.middleware.crypt.signature.AbstractDSASignature
              edu.vt.middleware.crypt.signature.ECDSASignature

All Implemented Interfaces:

Algorithm

public class ECDSASignature
extends AbstractDSASignature

Implements the ECDSA algorithm.

Version:

$Revision: 2744 $

Author:

Middleware Services

Field Summary

Fields inherited from class edu.vt.middleware.crypt.signature.AbstractDSASignature

signer

Fields inherited from class edu.vt.middleware.crypt.signature.SignatureAlgorithm

digest, signKey, verifyKey

Fields inherited from class edu.vt.middleware.crypt.AbstractAlgorithm

algorithm, logger, randomByteSize, randomProvider

Constructor Summary

ECDSASignature()
Creates a new ECDSA signature instance that uses SHA-1 for computation of message digests.

ECDSASignature(DigestAlgorithm d)
Creates a new ECDSA signature instance that uses the given digest algorithm for message digest computation.

Method Summary

protected void	init(boolean forSigning, org.bouncycastle.crypto.CipherParameters params) Initialize the signer.
void	initSign() Initialize the signature for the SignatureAlgorithm.sign(byte[]) operation.
void	initVerify() Initialize the signature for the SignatureAlgorithm.verify(byte[], byte[]) operation.
void	setSignKey(PrivateKey key) Sets the private key used for signing.
void	setVerifyKey(PublicKey key) Sets the public key used for verification.

Methods inherited from class edu.vt.middleware.crypt.signature.AbstractDSASignature

sign, sign, verify, verify

Methods inherited from class edu.vt.middleware.crypt.signature.SignatureAlgorithm

clone, newInstance, newInstance, sign, sign, verify, verify

Methods inherited from class edu.vt.middleware.crypt.AbstractAlgorithm

getAlgorithm, getRandomData, setRandomProvider, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ECDSASignature

public ECDSASignature()

Creates a new ECDSA signature instance that uses SHA-1 for computation of message digests.

ECDSASignature

public ECDSASignature(DigestAlgorithm d)

Creates a new ECDSA signature instance that uses the given digest algorithm for message digest computation.

Parameters:

d - Message digest algorithm.

Method Detail

setSignKey

public void setSignKey(PrivateKey key)

Sets the private key used for signing.

Overrides:

setSignKey in class SignatureAlgorithm

Parameters:

key - Private key.

setVerifyKey

public void setVerifyKey(PublicKey key)

Sets the public key used for verification.

Overrides:

setVerifyKey in class SignatureAlgorithm

Parameters:

key - Public key.

initSign

public void initSign()

Initialize the signature for the SignatureAlgorithm.sign(byte[]) operation.

Overrides:

initSign in class SignatureAlgorithm

initVerify

public void initVerify()

Initialize the signature for the SignatureAlgorithm.verify(byte[], byte[]) operation.

Overrides:

initVerify in class SignatureAlgorithm

init

protected void init(boolean forSigning,
                    org.bouncycastle.crypto.CipherParameters params)

Initialize the signer.

Overrides:

init in class AbstractDSASignature

Parameters:

forSigning - Whether to initialize signer for the sign operation.

params - BC cipher parameters.