com.ibm.crypto.fips.provider

Class DSAPrivateKey

java.lang.Object

com.ibm.security.pkcsutil.PKCSDerObject

com.ibm.security.pkcs8.PrivateKeyInfo

com.ibm.crypto.fips.provider.DSAPrivateKey

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.security.interfaces.DSAKey, java.security.interfaces.DSAPrivateKey, java.security.Key, java.security.PrivateKey, javax.security.auth.Destroyable

public final class DSAPrivateKey
extends com.ibm.security.pkcs8.PrivateKeyInfo
implements java.security.interfaces.DSAPrivateKey, java.io.Serializable

This class represents an X.509 private key for the DSA Algorithm.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.ibm.security.pkcs8.PrivateKeyInfo

algid, attributes, key, version

Fields inherited from class com.ibm.security.pkcsutil.PKCSDerObject

provider

Constructor Summary

Constructors

Constructor and Description
DSAPrivateKey(java.math.BigInteger x, java.math.BigInteger p, java.math.BigInteger q, java.math.BigInteger g) Create a DSA private key from x, p, q, and g.
DSAPrivateKey(byte[] encoded) Create a DSA private key from it's DER encoding (PKCS#8)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	finalize() This function zeroizes the key so that it isn't in memory when GC is done.
java.security.interfaces.DSAParams	getParams() Returns the DSA parameters associated with this key, or null if the parameters could not be parsed.
java.math.BigInteger	getX() Return the value of the private key.
protected void	parseKeyBits()
void	zeroize() This function zeroizes the key so that it isn't in memory

Methods inherited from class com.ibm.security.pkcs8.PrivateKeyInfo

addAttribute, addAttributes, clone, decode, encode, equals, getAlgorithm, getAlgorithmId, getAttribute, getAttributes, getEncoded, getFormat, getKeyBytes, hasAttribute, hasAttributes, hashCode, parseKey, parseKey, toString

Methods inherited from class com.ibm.security.pkcsutil.PKCSDerObject

decode, encode, getObjectIdentifier, read, readBASE64, write, write, writeBASE64

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.security.Key

getAlgorithm, getEncoded, getFormat

Methods inherited from interface javax.security.auth.Destroyable

destroy, isDestroyed

Constructor Detail

DSAPrivateKey

public DSAPrivateKey(java.math.BigInteger x,
             java.math.BigInteger p,
             java.math.BigInteger q,
             java.math.BigInteger g)
              throws java.security.InvalidKeyException

Create a DSA private key from x, p, q, and g.

Parameters:

x - the private key

p - the number p

q - the number q

g - the number g

Throws:

java.security.InvalidKeyException

DSAPrivateKey

public DSAPrivateKey(byte[] encoded)
              throws java.security.InvalidKeyException

Create a DSA private key from it's DER encoding (PKCS#8)

Parameters:

encoded - the encoded parameters.

Throws:

java.security.InvalidKeyException

Method Detail

getParams

public java.security.interfaces.DSAParams getParams()

Returns the DSA parameters associated with this key, or null if the parameters could not be parsed.

Specified by:

getParams in interface java.security.interfaces.DSAKey

Returns:

DSAParams the DSA parameter of this instance

getX

public java.math.BigInteger getX()

Return the value of the private key.

Specified by:

getX in interface java.security.interfaces.DSAPrivateKey

Returns:

BigInteger the value of x

parseKeyBits

protected void parseKeyBits()
                     throws java.io.IOException

Overrides:

parseKeyBits in class com.ibm.security.pkcs8.PrivateKeyInfo

Throws:

java.io.IOException

zeroize

public void zeroize()

This function zeroizes the key so that it isn't in memory

finalize

protected void finalize()

This function zeroizes the key so that it isn't in memory when GC is done.

Overrides:

finalize in class com.ibm.security.pkcs8.PrivateKeyInfo