net.sf.mmm.crypto.asymmetric.sign

Class SignatureProcessorFactoryImpl<S extends SignatureBinary,PR extends PrivateKey,PU extends PublicKey>

java.lang.Object

net.sf.mmm.crypto.algorithm.AbstractSecurityAlgorithm

net.sf.mmm.crypto.algorithm.AbstractCryptoAlgorithmWithProvider

net.sf.mmm.crypto.algorithm.AbstractCryptoAlgorithmWithRandom

net.sf.mmm.crypto.asymmetric.sign.SignatureProcessorFactoryImpl<S,PR,PU>

Type Parameters:

S - type of SignatureBinary.

PR - type of PrivateKey.

PU - type of PublicKey.

All Implemented Interfaces:

CryptoAlgorithm, SignatureFactory<S>, SignatureProcessorFactory<S,PR,PU>

public class SignatureProcessorFactoryImpl<S extends SignatureBinary,PR extends PrivateKey,PU extends PublicKey>
extends AbstractCryptoAlgorithmWithRandom
implements SignatureProcessorFactory<S,PR,PU>

Default implementation of SignatureProcessorFactory based on Signature.

Since:

1.0.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field and Description
private SignatureConfig<S>	config

Fields inherited from class net.sf.mmm.crypto.algorithm.AbstractCryptoAlgorithmWithProvider

provider

Constructor Summary

Constructors

Constructor and Description
SignatureProcessorFactoryImpl(SignatureConfig<S> config, RandomFactory randomFactory) The constructor.

Method Summary

Modifier and Type	Method and Description
S	createSignature(byte[] data)
String	getAlgorithm()
SignatureProcessorFactory<S,PR,PU>	getSignatureFactoryWithoutHash()
private HashCreator	newHashCreator()
SignatureSigner<S>	newSigner(PR privateKey)
SignatureVerifier<S>	newVerifier(PU publicKey)

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

createSecureRandom, getRandomFactory

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

getProvider

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.SignatureProcessorFactory

newSignerUnsafe, newVerifierUnsafe

Field Detail

config

private final SignatureConfig<S extends SignatureBinary> config

Constructor Detail

SignatureProcessorFactoryImpl

public SignatureProcessorFactoryImpl(SignatureConfig<S> config,
                                     RandomFactory randomFactory)

The constructor.

Parameters:

config - the SignatureConfig.

randomFactory - the RandomFactory.

Method Detail

getAlgorithm

public String getAlgorithm()

Specified by:

getAlgorithm in interface CryptoAlgorithm

Returns:

the name of the underlying algorithm (e.g. "RSA", "NONEwithECDSA", etc.).

See Also:

Key.getAlgorithm(), Signature.getAlgorithm(), MessageDigest.getAlgorithm(), SecureRandom.getAlgorithm(), Cipher.getAlgorithm()

newHashCreator

private HashCreator newHashCreator()

newSigner

public SignatureSigner<S> newSigner(PR privateKey)

Specified by:

newSigner in interface SignatureProcessorFactory<S extends SignatureBinary,PR extends PrivateKey,PU extends PublicKey>

Parameters:

privateKey - the PrivateKey to use for signing.

Returns:

the SignatureSigner for signing.

newVerifier

public SignatureVerifier<S> newVerifier(PU publicKey)

Specified by:

newVerifier in interface SignatureProcessorFactory<S extends SignatureBinary,PR extends PrivateKey,PU extends PublicKey>

Parameters:

publicKey - the PublicKey to use for verifying.

Returns:

the SignatureVerifier for verifying.

createSignature

public S createSignature(byte[] data)

Specified by:

createSignature in interface SignatureFactory<S extends SignatureBinary>

Parameters:

data - the binary signature data.

Returns:

the deserialized SignatureBinary.

getSignatureFactoryWithoutHash

public SignatureProcessorFactory<S,PR,PU> getSignatureFactoryWithoutHash()

Specified by:

getSignatureFactoryWithoutHash in interface SignatureProcessorFactory<S extends SignatureBinary,PR extends PrivateKey,PU extends PublicKey>

Returns:

an instance of this SignatureFactory that does not hash before signing so you can control the hashing manually and only sign the resulting hash (e.g. to reuse the hash value for further calculations).