org.spongycastle.crypto.generators

Class RSAKeyPairGenerator

java.lang.Object

org.spongycastle.crypto.generators.RSAKeyPairGenerator

All Implemented Interfaces:

AsymmetricCipherKeyPairGenerator

public class RSAKeyPairGenerator
extends java.lang.Object
implements AsymmetricCipherKeyPairGenerator

an RSA key pair generator.

Constructor Summary

Constructors

Constructor and Description
RSAKeyPairGenerator()

Method Summary

Modifier and Type	Method and Description
protected java.math.BigInteger	chooseRandomPrime(int bitlength, java.math.BigInteger e, java.math.BigInteger sqrdBound) Choose a random prime value for use with RSA
AsymmetricCipherKeyPair	generateKeyPair() return an AsymmetricCipherKeyPair containing the generated keys.
void	init(KeyGenerationParameters param) intialise the key pair generator.
protected boolean	isProbablePrime(java.math.BigInteger x)

Methods inherited from class java.lang.Object

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

Constructor Detail

RSAKeyPairGenerator

public RSAKeyPairGenerator()

Method Detail

init

public void init(KeyGenerationParameters param)

Description copied from interface: AsymmetricCipherKeyPairGenerator

intialise the key pair generator.

Specified by:

init in interface AsymmetricCipherKeyPairGenerator

Parameters:

param - the parameters the key pair is to be initialised with.

generateKeyPair

public AsymmetricCipherKeyPair generateKeyPair()

Description copied from interface: AsymmetricCipherKeyPairGenerator

return an AsymmetricCipherKeyPair containing the generated keys.

Specified by:

generateKeyPair in interface AsymmetricCipherKeyPairGenerator

Returns:

an AsymmetricCipherKeyPair containing the generated keys.

chooseRandomPrime

protected java.math.BigInteger chooseRandomPrime(int bitlength,
                                                 java.math.BigInteger e,
                                                 java.math.BigInteger sqrdBound)

Choose a random prime value for use with RSA

Parameters:

bitlength - the bit-length of the returned prime

e - the RSA public exponent

Returns:

A prime p, with (p-1) relatively prime to e

isProbablePrime

protected boolean isProbablePrime(java.math.BigInteger x)