gnu.crypto.key.rsa
Class GnuRSAPrivateKey

java.lang.Object
  gnu.crypto.key.rsa.GnuRSAKey
      gnu.crypto.key.rsa.GnuRSAPrivateKey

All Implemented Interfaces:

java.security.Key, java.security.PrivateKey, java.security.interfaces.RSAKey, java.security.interfaces.RSAPrivateCrtKey, java.security.interfaces.RSAPrivateKey, java.io.Serializable

public class GnuRSAPrivateKey

extends GnuRSAKey

implements java.security.PrivateKey, java.security.interfaces.RSAPrivateCrtKey

An object that embodies an RSA private key.

References:

1. RSA-PSS Signature Scheme with Appendix, part B.
   Primitive specification and supporting documentation.
   Jakob Jonsson and Burt Kaliski.

Version:

$Revision: 1.2 $

See Also:

Serialized Form

Field Summary

Fields inherited from interface java.security.PrivateKey

serialVersionUID

Constructor Summary

GnuRSAPrivateKey(java.math.BigInteger p, java.math.BigInteger q, java.math.BigInteger e, java.math.BigInteger d)
Trivial constructor.

Method Summary

boolean	equals(java.lang.Object obj) Returns true if the designated object is an instance of this class and has the same RSA parameter values as this one.
java.math.BigInteger	getCrtCoefficient()
byte[]	getEncoded(int format) Returns the encoded form of this private key according to the designated format.
java.math.BigInteger	getPrimeExponentP()
java.math.BigInteger	getPrimeExponentQ()
java.math.BigInteger	getPrimeP()
java.math.BigInteger	getPrimeQ()
java.math.BigInteger	getPrivateExponent()
static GnuRSAPrivateKey	valueOf(byte[] k) A class method that takes the output of the encodePrivateKey() method of an RSA keypair codec object (an instance implementing IKeyPairCodec for RSA keys, and re-constructs an instance of this object.

Methods inherited from class gnu.crypto.key.rsa.GnuRSAKey

getAlgorithm, getE, getEncoded, getFormat, getModulus, getN, getPublicExponent

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.security.Key

getAlgorithm, getEncoded, getFormat

Methods inherited from interface java.security.interfaces.RSAPrivateCrtKey

getPublicExponent

Methods inherited from interface java.security.interfaces.RSAKey

getModulus

Constructor Detail

GnuRSAPrivateKey

public GnuRSAPrivateKey(java.math.BigInteger p,
                        java.math.BigInteger q,
                        java.math.BigInteger e,
                        java.math.BigInteger d)

Trivial constructor.

Parameters:

p - the modulus first prime divisor.

q - the modulus second prime divisor.

e - the public exponent.

d - the private exponent.

Method Detail

valueOf

public static GnuRSAPrivateKey valueOf(byte[] k)

A class method that takes the output of the encodePrivateKey() method of an RSA keypair codec object (an instance implementing IKeyPairCodec for RSA keys, and re-constructs an instance of this object.

Parameters:

k - the contents of a previously encoded instance of this object.

Throws:

java.lang.ArrayIndexOutOfBoundsException - if there is not enough bytes, in k, to represent a valid encoding of an instance of this object.

java.lang.IllegalArgumentException - if the byte sequence does not represent a valid encoding of an instance of this object.

getPrimeP

public java.math.BigInteger getPrimeP()

Specified by:

getPrimeP in interface java.security.interfaces.RSAPrivateCrtKey

getPrimeQ

public java.math.BigInteger getPrimeQ()

Specified by:

getPrimeQ in interface java.security.interfaces.RSAPrivateCrtKey

getPrimeExponentP

public java.math.BigInteger getPrimeExponentP()

Specified by:

getPrimeExponentP in interface java.security.interfaces.RSAPrivateCrtKey

getPrimeExponentQ

public java.math.BigInteger getPrimeExponentQ()

Specified by:

getPrimeExponentQ in interface java.security.interfaces.RSAPrivateCrtKey

getCrtCoefficient

public java.math.BigInteger getCrtCoefficient()

Specified by:

getCrtCoefficient in interface java.security.interfaces.RSAPrivateCrtKey

getPrivateExponent

public java.math.BigInteger getPrivateExponent()

Specified by:

getPrivateExponent in interface java.security.interfaces.RSAPrivateKey

getEncoded

public byte[] getEncoded(int format)

Returns the encoded form of this private key according to the designated format.

Specified by:

getEncoded in class GnuRSAKey

Parameters:

format - the desired format identifier of the resulting encoding.

Returns:

the byte sequence encoding this key according to the designated format.

Throws:

java.lang.IllegalArgumentException - if the format is not supported.

See Also:

RSAKeyPairRawCodec

equals

public boolean equals(java.lang.Object obj)

Returns true if the designated object is an instance of this class and has the same RSA parameter values as this one.

Overrides:

equals in class GnuRSAKey

Parameters:

obj - the other non-null RSA key to compare to.

Returns:

true if the designated object is of the same type and value as this one.