ElGamalPrivateKeyImpl (Javadocs [I2P+ 2.13.0+]

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()` No-arg constructor.
	`ElGamalPrivateKeyImpl(BigInteger x, ElGamalParameterSpec elSpec)` Create from the private exponent and parameters.
	`ElGamalPrivateKeyImpl(DHPrivateKey key)` Create from a DH private key.
	`ElGamalPrivateKeyImpl(DHPrivateKeySpec spec)` Create from a DH private key spec.
	`ElGamalPrivateKeyImpl(ElGamalPrivateKey key)` Create a copy of the given ElGamal private key.
	`ElGamalPrivateKeyImpl(ElGamalPrivateKeySpec spec)` Create from an ElGamal private key spec.
	`ElGamalPrivateKeyImpl(PKCS8EncodedKeySpec spec)` Constructor from PKCS8 key spec.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`getAlgorithm()` The algorithm name, "ElGamal".
`byte[]`	`getEncoded()` Return a PKCS8 representation of the key.
`String`	`getFormat()` The encoding format produced by getEncoded().
`ElGamalParameterSpec`	`getParameters()` The ElGamal parameters for this key.
`DHParameterSpec`	`getParams()` The parameters for this key.
`BigInteger`	`getX()` The private exponent.

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()
```
    No-arg constructor.
  - ElGamalPrivateKeyImpl
```
public ElGamalPrivateKeyImpl(BigInteger x,
                             ElGamalParameterSpec elSpec)
```
    Create from the private exponent and parameters.
    Parameters:
    x - The private exponent.
    elSpec - The ElGamal parameters.
  - ElGamalPrivateKeyImpl
```
public ElGamalPrivateKeyImpl(DHPrivateKey key)
```
    Create from a DH private key.
    Parameters:
    key - the DH private key
  - ElGamalPrivateKeyImpl
```
public ElGamalPrivateKeyImpl(DHPrivateKeySpec spec)
```
    Create from a DH private key spec.
    Parameters:
    spec - the DH private key spec
  - ElGamalPrivateKeyImpl
```
public ElGamalPrivateKeyImpl(ElGamalPrivateKey key)
```
    Create a copy of the given ElGamal private key.
    Parameters:
    key - the key
  - ElGamalPrivateKeyImpl
```
public ElGamalPrivateKeyImpl(ElGamalPrivateKeySpec spec)
```
    Create from an ElGamal private key spec.
    Parameters:
    spec - the ElGamal private key spec
  - ElGamalPrivateKeyImpl
```
public ElGamalPrivateKeyImpl(PKCS8EncodedKeySpec spec)
                      throws InvalidKeySpecException
```
    Constructor from PKCS8 key spec.
    Parameters:
    spec - the PKCS8 key spec
    Throws:
    InvalidKeySpecException - always, not yet implemented
- Method Detail
  - getAlgorithm
```
public String getAlgorithm()
```
    The algorithm name, "ElGamal".
    Specified by:
    getAlgorithm in interface Key
    Returns:
    The algorithm.
  - 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()
```
    The encoding format produced by getEncoded().
    Specified by:
    getFormat in interface Key
    Returns:
    The format.
  - getParameters
```
public ElGamalParameterSpec getParameters()
```
    The ElGamal parameters for this key.
    Specified by:
    getParameters in interface ElGamalKey
    Returns:
    The parameters.
  - getParams
```
public DHParameterSpec getParams()
```
    The parameters for this key.
    Specified by:
    getParams in interface DHKey
    Returns:
    The params.
  - getX
```
public BigInteger getX()
```
    The private exponent.
    Specified by:
    getX in interface DHPrivateKey
    Specified by:
    getX in interface ElGamalPrivateKey
    Returns:
    The x.

Class ElGamalPrivateKeyImpl

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface javax.security.auth.Destroyable

Constructor Detail

ElGamalPrivateKeyImpl

ElGamalPrivateKeyImpl

ElGamalPrivateKeyImpl

ElGamalPrivateKeyImpl

ElGamalPrivateKeyImpl

ElGamalPrivateKeyImpl

ElGamalPrivateKeyImpl

Method Detail

getAlgorithm

getEncoded

getFormat

getParameters

getParams

getX