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Class RSAMultiPrimePrivateCrtKeySpec

All Implemented Interfaces:
KeySpec
public class RSAMultiPrimePrivateCrtKeySpec
extends RSAPrivateKeySpec

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

Since:
1.4
See Also:
Key, KeyFactory, KeySpec, PKCS8EncodedKeySpec, RSAPrivateKeySpec, RSAPublicKeySpec, RSAOtherPrimeInfo

Constructors

RSAMultiPrimePrivateCrtKeySpec

public RSAMultiPrimePrivateCrtKeySpec(BigInteger modulus,
                                      BigInteger publicExponent,
                                      BigInteger privateExponent,
                                      BigInteger primeP,
                                      BigInteger primeQ,
                                      BigInteger primeExponentP,
                                      BigInteger primeExponentQ,
                                      BigInteger crtCoefficient,
                                      RSAOtherPrimeInfo[] otherPrimeInfo)

Creates a new RSAMultiPrimePrivateCrtKeySpec given the modulus, publicExponent, privateExponent, primeP, primeQ, primeExponentP, primeExponentQ, crtCoefficient, and otherPrimeInfo as defined in PKCS#1 v2.1.

Note that the contents of otherPrimeInfo are copied to protect against subsequent modification when constructing this object.

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.
otherPrimeInfo - triplets of the rest of primes, null can be specified if there are only two prime factors (p and q).
Throws:
NullPointerException - if any of the parameters, i.e. modulus, publicExponent, privateExponent, primeP, primeQ, primeExponentP, primeExponentQ, crtCoefficient, is null.
IllegalArgumentException - if an empty, i.e. 0-length, otherPrimeInfo is specified.

Methods

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.

getOtherPrimeInfo

public RSAOtherPrimeInfo[] getOtherPrimeInfo()

Returns a copy of the otherPrimeInfo or null if there are only two prime factors (p and q).

Returns:
the otherPrimeInfo. Returns a new array each time this method is called.

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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