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 java.security.spec.RSAPrivateKeySpec

getModulus, getParams, getPrivateExponent

Methods declared in class java.lang.Object

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

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