public final class

DSAPrivateKey

extends PKCS8Key
implements Serializable DSAPrivateKey

java.lang.Object
↳	sun.security.pkcs.PKCS8Key
	↳	sun.security.provider.DSAPrivateKey

Class Overview

A PKCS#8 private key for the Digital Signature Algorithm.

Summary

[Expand]

Inherited Constants

From interface java.security.Key

From interface java.security.PrivateKey

From interface java.security.interfaces.DSAPrivateKey

[Expand]

Inherited Fields

From class sun.security.pkcs.PKCS8Key

Public Constructors
	DSAPrivateKey()
	DSAPrivateKey(BigInteger x, BigInteger p, BigInteger q, BigInteger g) Make a DSA private key out of a private key and three parameters.
	DSAPrivateKey(byte[] encoded) Make a DSA private key from its DER encoding (PKCS #8).

Public Methods
DSAParams	getParams() Returns the DSA parameters associated with this key, or null if the parameters could not be parsed.
BigInteger	getX() Get the raw private key, x, without the parameters.
String	toString() Returns a string representation of the object.

Protected Methods
void	parseKeyBits() Parse the key bits.

[Expand]

Inherited Methods

From class sun.security.pkcs.PKCS8Key

void	decode(InputStream in) Initialize an PKCS8Key object from an input stream.
void	decode(byte[] encodedKey)
byte[]	encode() Returns the DER-encoded form of the key as a byte array.
final void	encode(DerOutputStream out) PKCS#8 sequence on the DER output stream.
boolean	equals(Object object) Compares two private keys.
String	getAlgorithm() Returns the algorithm to be used with this key.
AlgorithmId	getAlgorithmId() Returns the algorithm ID to be used with this key.
synchronized byte[]	getEncoded() Returns the DER-encoded form of the key as a byte array.
String	getFormat() Returns the format for this key: "PKCS#8"
int	hashCode() Calculates a hash code value for this object.
static PKCS8Key	parse(DerValue in)
static PrivateKey	parseKey(DerValue in) Construct PKCS#8 subject public key from a DER value.
void	parseKeyBits() Parse the key bits.
String	toString() Returns a string representation of the object.
Object	writeReplace()

From class java.lang.Object

Object	clone() Creates and returns a copy of this object.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
final Class<?>	getClass() Returns the runtime class of this `Object`.
int	hashCode() Returns a hash code value for the object.
final void	notify() Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
String	toString() Returns a string representation of the object.
final void	wait() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
final void	wait(long timeout) Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.

From interface java.security.Key

From interface java.security.interfaces.DSAKey

From interface java.security.interfaces.DSAPrivateKey

Public Constructors

public DSAPrivateKey ()

public DSAPrivateKey (BigInteger x, BigInteger p, BigInteger q, BigInteger g)

Make a DSA private key out of a private key and three parameters.

Throws

InvalidKeyException

public DSAPrivateKey (byte[] encoded)

Make a DSA private key from its DER encoding (PKCS #8).

Throws

InvalidKeyException

Public Methods

public DSAParams getParams ()

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

Returns

the DSA-specific key parameters.

public BigInteger getX ()

Get the raw private key, x, without the parameters.

Returns

the value of the private key, x.

public String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())

Returns

a string representation of the object.

Protected Methods

protected void parseKeyBits ()

Parse the key bits. This may be redefined by subclasses to take advantage of structure within the key. For example, RSA public keys encapsulate two unsigned integers (modulus and exponent) as DER values within the key bits; Diffie-Hellman and DSS/DSA keys encapsulate a single unsigned integer.

This function is called when creating PKCS#8 SubjectPublicKeyInfo values using the PKCS8Key member functions, such as parse and decode.

Throws

InvalidKeyException

Classes

Exceptions

DSAPrivateKey

Class Overview

See Also

Summary

Public Constructors

public DSAPrivateKey ()

public DSAPrivateKey (BigInteger x, BigInteger p, BigInteger q, BigInteger g)

Throws

public DSAPrivateKey (byte[] encoded)

Throws

Public Methods

public DSAParams getParams ()

Returns

public BigInteger getX ()

Returns

See Also

public String toString ()

Returns

Protected Methods

protected void parseKeyBits ()

Throws