net.i2p.crypto.elgamal.impl

Class ElGamalPrivateKeyImpl

java.lang.Object

net.i2p.crypto.elgamal.impl.ElGamalPrivateKeyImpl

All Implemented Interfaces:

Serializable, Key, PrivateKey, DHKey, DHPrivateKey, Destroyable, ElGamalKey, ElGamalPrivateKey

public class ElGamalPrivateKeyImpl
extends Object
implements ElGamalPrivateKey, DHPrivateKey

Implementation of ElGamal private keys. This class provides a concrete implementation of the ElGamalPrivateKey interface, representing the private component of an ElGamal key pair. It stores the secret exponent x and the ElGamal parameters (prime p and generator g), and supports PKCS#8 encoding for standardized key storage and transmission.

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ElGamalPrivateKeyImpl()
	ElGamalPrivateKeyImpl(BigInteger x, ElGamalParameterSpec elSpec)
	ElGamalPrivateKeyImpl(DHPrivateKey key)
	ElGamalPrivateKeyImpl(DHPrivateKeySpec spec)
	ElGamalPrivateKeyImpl(ElGamalPrivateKey key)
	ElGamalPrivateKeyImpl(ElGamalPrivateKeySpec spec)
	ElGamalPrivateKeyImpl(PKCS8EncodedKeySpec spec)

Method Summary

Modifier and Type	Method and Description
String	getAlgorithm()
byte[]	getEncoded() Return a PKCS8 representation of the key.
String	getFormat() return the encoding format we produce in getEncoded().
ElGamalParameterSpec	getParameters()
DHParameterSpec	getParams()
BigInteger	getX()

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.security.auth.Destroyable

destroy, isDestroyed

Constructor Detail

ElGamalPrivateKeyImpl

protected ElGamalPrivateKeyImpl()

ElGamalPrivateKeyImpl

public ElGamalPrivateKeyImpl(BigInteger x,
                             ElGamalParameterSpec elSpec)

ElGamalPrivateKeyImpl

public ElGamalPrivateKeyImpl(DHPrivateKey key)

ElGamalPrivateKeyImpl

public ElGamalPrivateKeyImpl(DHPrivateKeySpec spec)

ElGamalPrivateKeyImpl

public ElGamalPrivateKeyImpl(ElGamalPrivateKey key)

ElGamalPrivateKeyImpl

public ElGamalPrivateKeyImpl(ElGamalPrivateKeySpec spec)

ElGamalPrivateKeyImpl

public ElGamalPrivateKeyImpl(PKCS8EncodedKeySpec spec)
                      throws InvalidKeySpecException

Throws:

InvalidKeySpecException

Method Detail

getAlgorithm

public String getAlgorithm()

Specified by:

getAlgorithm in interface Key

getEncoded

public byte[] getEncoded()

Return a PKCS8 representation of the key. The sequence returned represents a full PrivateKeyInfo object.

Specified by:

getEncoded in interface Key

Returns:

a PKCS8 representation of the key.

getFormat

public String getFormat()

return the encoding format we produce in getEncoded().

Specified by:

getFormat in interface Key

Returns:

the string "PKCS#8"

getParameters

public ElGamalParameterSpec getParameters()

Specified by:

getParameters in interface ElGamalKey

getParams

public DHParameterSpec getParams()

Specified by:

getParams in interface DHKey

getX

public BigInteger getX()

Specified by:

getX in interface DHPrivateKey

Specified by:

getX in interface ElGamalPrivateKey