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

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.

Version:

1.00, 07/20/99

Author:

Joyce Leung

See Also:

Serialized Form

Field Summary

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

version

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
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.
java.lang.String	toString() Returns a string containing a concise, human-readable description of the receiver.
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, encode, equals, getAlgorithm, getAlgorithmId, getAttribute, getAttributes, getEncoded, getFormat, getKeyBytes, hasAttribute, hasAttributes, hashCode, parseKey, parseKey

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

encode, getObjectIdentifier, write

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.security.Key

getAlgorithm, getEncoded, getFormat

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

toString

public java.lang.String toString()

Returns a string containing a concise, human-readable description of the receiver.

Overrides:

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

zeroize

public void zeroize()

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