net.sf.mmm.crypto.asymmetric.sign

Class SignatureSignerImplWithHash<S extends SignatureBinary>

java.lang.Object

net.sf.mmm.crypto.algorithm.AbstractSecurityAlgorithm

net.sf.mmm.crypto.asymmetric.sign.SignatureProcessorImplWithHash

net.sf.mmm.crypto.asymmetric.sign.SignatureSignerImplWithHash<S>

Type Parameters:

S - type of SignatureBinary.

All Implemented Interfaces:

CryptoAlgorithm, SignatureProcessor, SignatureSigner<S>, SignatureSignerSimple, CryptoChunker, CryptoProcessor

public class SignatureSignerImplWithHash<S extends SignatureBinary>
extends SignatureProcessorImplWithHash
implements SignatureSigner<S>

Implementation of SignatureSigner combining a HashCreator with another SignatureSigner.

Since:

1.0.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field and Description
private SignatureSigner<S>	signer

Constructor Summary

Constructors

Constructor and Description
SignatureSignerImplWithHash(HashCreator hashGenerator, SignatureSigner<S> signer) The constructor.

Method Summary

Modifier and Type	Method and Description
protected CryptoAlgorithm	getSignatureAlgorithm()
void	reset() Will reset the internal state of this object.
S	signAfterUpdate(boolean reset)
byte[]	signAfterUpdateRaw(boolean reset)

Methods inherited from class net.sf.mmm.crypto.asymmetric.sign.SignatureProcessorImplWithHash

getAlgorithm, getHashGenerator, update

Methods inherited from class net.sf.mmm.crypto.algorithm.AbstractSecurityAlgorithm

creationFailedException, creationFailedException, creationFailedException, creationFailedException, getAlgorithm, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.mmm.crypto.asymmetric.sign.SignatureSigner

sign, sign, sign

Methods inherited from interface net.sf.mmm.crypto.asymmetric.sign.SignatureSignerSimple

process

Methods inherited from interface net.sf.mmm.crypto.CryptoChunker

update, update, update

Methods inherited from interface net.sf.mmm.crypto.CryptoProcessor

process, process, process

Methods inherited from interface net.sf.mmm.crypto.algorithm.CryptoAlgorithm

getAlgorithm

Field Detail

signer

private final SignatureSigner<S extends SignatureBinary> signer

Constructor Detail

SignatureSignerImplWithHash

public SignatureSignerImplWithHash(HashCreator hashGenerator,
                                   SignatureSigner<S> signer)

The constructor.

Parameters:

hashGenerator - the HashCreator to apply as extension.

signer - the SignatureSigner to extend.

Method Detail

getSignatureAlgorithm

protected CryptoAlgorithm getSignatureAlgorithm()

Specified by:

getSignatureAlgorithm in class SignatureProcessorImplWithHash

Returns:

the CryptoAlgorithm to extend.

signAfterUpdate

public S signAfterUpdate(boolean reset)

Specified by:

signAfterUpdate in interface SignatureSigner<S extends SignatureBinary>

Parameters:

reset - - true to reset after the signature has been generated, false otherwise.

Returns:

the final signature generated for the processed data.

signAfterUpdateRaw

public byte[] signAfterUpdateRaw(boolean reset)

Specified by:

signAfterUpdateRaw in interface SignatureSignerSimple

Parameters:

reset - - true to reset after the signature has been generated, false otherwise.

Returns:

the final signature generated for the processed data.

reset

public void reset()

Description copied from interface: CryptoProcessor

Will reset the internal state of this object. Please note that complex algorithms especially for Cryptor may not reusable. It is therefore preferable to always create a fresh instance for each cryptographic task.

Specified by:

reset in interface CryptoProcessor

Overrides:

reset in class SignatureProcessorImplWithHash

See Also:

MessageDigest.reset()