Package org.bouncycastle.jcajce.provider.asymmetric.elgamal

Class BCElGamalPrivateKey

java.lang.Object

org.bouncycastle.jcajce.provider.asymmetric.elgamal.BCElGamalPrivateKey

All Implemented Interfaces:

java.io.Serializable, java.security.Key, java.security.PrivateKey, javax.crypto.interfaces.DHKey, javax.crypto.interfaces.DHPrivateKey, javax.security.auth.Destroyable, ElGamalKey, ElGamalPrivateKey, PKCS12BagAttributeCarrier

public class BCElGamalPrivateKey
extends java.lang.Object
implements ElGamalPrivateKey, javax.crypto.interfaces.DHPrivateKey, javax.security.auth.Destroyable, PKCS12BagAttributeCarrier

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BCElGamalPrivateKey()

Method Summary

Modifier and Type	Method	Description
void	destroy()	Destroy this key, clearing the key material it holds.
boolean	equals(java.lang.Object o)
java.lang.String	getAlgorithm()
ASN1Encodable	getBagAttribute(ASN1ObjectIdentifier oid)
java.util.Enumeration	getBagAttributeKeys()
byte[]	getEncoded()	Return a PKCS8 representation of the key.
java.lang.String	getFormat()	return the encoding format we produce in getEncoded().
ElGamalParameterSpec	getParameters()
javax.crypto.spec.DHParameterSpec	getParams()
java.math.BigInteger	getX()
boolean	hasFriendlyName()
int	hashCode()
boolean	isDestroyed()
void	setBagAttribute(ASN1ObjectIdentifier oid, ASN1Encodable attribute)
void	setFriendlyName(java.lang.String friendlyName)

Methods inherited from class java.lang.Object

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

Constructor Detail

BCElGamalPrivateKey

protected BCElGamalPrivateKey()

Method Detail

getAlgorithm

public java.lang.String getAlgorithm()

Specified by:

getAlgorithm in interface java.security.Key

getFormat

public java.lang.String getFormat()

return the encoding format we produce in getEncoded().

Specified by:

getFormat in interface java.security.Key

Returns:

the string "PKCS#8"

getEncoded

public byte[] getEncoded()

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

Specified by:

getEncoded in interface java.security.Key

Returns:

a PKCS8 representation of the key.

getParameters

public ElGamalParameterSpec getParameters()

Specified by:

getParameters in interface ElGamalKey

getParams

public javax.crypto.spec.DHParameterSpec getParams()

Specified by:

getParams in interface javax.crypto.interfaces.DHKey

getX

public java.math.BigInteger getX()

Specified by:

getX in interface javax.crypto.interfaces.DHPrivateKey

Specified by:

getX in interface ElGamalPrivateKey

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

destroy

public void destroy()

Destroy this key, clearing the key material it holds.

The private value is held as a BigInteger, which is immutable and so cannot be zeroized in place - destruction drops the internal reference so the value becomes unreachable (cleared on garbage collection). The (public) domain parameters are retained. After destruction isDestroyed() returns true, the secret-bearing accessors (getEncoded() and getX()) throw IllegalStateException, the key can no longer be serialized, and it is equal only to itself; hashCode() retains its pre-destruction value.

Specified by:

destroy in interface javax.security.auth.Destroyable

isDestroyed

public boolean isDestroyed()

Specified by:

isDestroyed in interface javax.security.auth.Destroyable

setBagAttribute

public void setBagAttribute(ASN1ObjectIdentifier oid,
                            ASN1Encodable attribute)

Specified by:

setBagAttribute in interface PKCS12BagAttributeCarrier

getBagAttribute

public ASN1Encodable getBagAttribute(ASN1ObjectIdentifier oid)

Specified by:

getBagAttribute in interface PKCS12BagAttributeCarrier

getBagAttributeKeys

public java.util.Enumeration getBagAttributeKeys()

Specified by:

getBagAttributeKeys in interface PKCS12BagAttributeCarrier

hasFriendlyName

public boolean hasFriendlyName()

Specified by:

hasFriendlyName in interface PKCS12BagAttributeCarrier

setFriendlyName

public void setFriendlyName(java.lang.String friendlyName)

Specified by:

setFriendlyName in interface PKCS12BagAttributeCarrier