Class RSAPrivateCrtKeySpec

java.lang.Object

java.security.spec.RSAPrivateKeySpec

java.security.spec.RSAPrivateCrtKeySpec

All Implemented Interfaces:

KeySpec

public class RSAPrivateCrtKeySpec
extends RSAPrivateKeySpec

This class specifies an RSA private key, as defined in the PKCS#1 v2.2 standard, using the Chinese Remainder Theorem (CRT) information values for efficiency.

Since:

1.2

External Specifications

• RFC 8017: PKCS #1: RSA Cryptography Specifications Version 2.2

See Also:

• Key
• KeyFactory
• KeySpec
• PKCS8EncodedKeySpec
• RSAPrivateKeySpec
• RSAPublicKeySpec

Constructor Summary

Constructors

Constructor	Description
RSAPrivateCrtKeySpec(BigInteger modulus, BigInteger publicExponent, BigInteger privateExponent, BigInteger primeP, BigInteger primeQ, BigInteger primeExponentP, BigInteger primeExponentQ, BigInteger crtCoefficient)	Creates a new RSAPrivateCrtKeySpec.
RSAPrivateCrtKeySpec(BigInteger modulus, BigInteger publicExponent, BigInteger privateExponent, BigInteger primeP, BigInteger primeQ, BigInteger primeExponentP, BigInteger primeExponentQ, BigInteger crtCoefficient, AlgorithmParameterSpec keyParams)	Creates a new RSAPrivateCrtKeySpec with additional key parameters.

Method Summary

Modifier and Type	Method	Description
BigInteger	getCrtCoefficient()	Returns the crtCoefficient.
BigInteger	getPrimeExponentP()	Returns the primeExponentP.
BigInteger	getPrimeExponentQ()	Returns the primeExponentQ.
BigInteger	getPrimeP()	Returns the primeP.
BigInteger	getPrimeQ()	Returns the primeQ.
BigInteger	getPublicExponent()	Returns the public exponent.

Methods declared in class RSAPrivateKeySpec

getModulus, getParams, getPrivateExponent

Modifier and Type	Method	Description
BigInteger	getModulus()	Returns the modulus.
AlgorithmParameterSpec	getParams()	Returns the parameters associated with this key, may be null if not present.
BigInteger	getPrivateExponent()	Returns the private exponent.

Methods declared in class Object

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

Modifier and Type	Method	Description
protected Object	clone()	Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
boolean	equals(Object o)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. May cause performance issues, deadlocks and hangs.
final Class<? extends Object>	getClass()	Answers the unique instance of java.lang.Class which represents the class of the receiver.
int	hashCode()	Answers an integer hash code for the receiver.
final void	notify()	Causes one thread which is waiting on the receiver to be made ready to run.
final void	notifyAll()	Causes all threads which are waiting on the receiver to be made ready to run.
String	toString()	Answers a string containing a concise, human-readable description of the receiver.
final void	wait()	Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
final void	wait(long time)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
final void	wait(long time, int frac)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

Constructor Details

RSAPrivateCrtKeySpec

public RSAPrivateCrtKeySpec(BigInteger modulus,
 BigInteger publicExponent,
 BigInteger privateExponent,
 BigInteger primeP,
 BigInteger primeQ,
 BigInteger primeExponentP,
 BigInteger primeExponentQ,
 BigInteger crtCoefficient)

Creates a new RSAPrivateCrtKeySpec.

Parameters:

modulus - the modulus n

publicExponent - the public exponent e

privateExponent - the private exponent d

primeP - the prime factor p of n

primeQ - the prime factor q of n

primeExponentP - this is d mod (p-1)

primeExponentQ - this is d mod (q-1)

crtCoefficient - the Chinese Remainder Theorem coefficient q-1 mod p

RSAPrivateCrtKeySpec

public RSAPrivateCrtKeySpec(BigInteger modulus,
 BigInteger publicExponent,
 BigInteger privateExponent,
 BigInteger primeP,
 BigInteger primeQ,
 BigInteger primeExponentP,
 BigInteger primeExponentQ,
 BigInteger crtCoefficient,
 AlgorithmParameterSpec keyParams)

Creates a new RSAPrivateCrtKeySpec with additional key parameters.

Parameters:

modulus - the modulus n

publicExponent - the public exponent e

privateExponent - the private exponent d

primeP - the prime factor p of n

primeQ - the prime factor q of n

primeExponentP - this is d mod (p-1)

primeExponentQ - this is d mod (q-1)

crtCoefficient - the Chinese Remainder Theorem coefficient q-1 mod p

keyParams - the parameters associated with key

Since:

11

Method Details

getPublicExponent

public BigInteger getPublicExponent()

Returns the public exponent.

Returns:

the public exponent

getPrimeP

public BigInteger getPrimeP()

Returns the primeP.

Returns:

the primeP

getPrimeQ

public BigInteger getPrimeQ()

Returns the primeQ.

Returns:

the primeQ

getPrimeExponentP

public BigInteger getPrimeExponentP()

Returns the primeExponentP.

Returns:

the primeExponentP

getPrimeExponentQ

public BigInteger getPrimeExponentQ()

Returns the primeExponentQ.

Returns:

the primeExponentQ

getCrtCoefficient

public BigInteger getCrtCoefficient()

Returns the crtCoefficient.

Returns:

the crtCoefficient