anon.crypto
Class RSAKeyPair

java.lang.Object
  anon.crypto.AsymmetricCryptoKeyPair
      anon.crypto.RSAKeyPair

public class RSAKeyPair
extends AsymmetricCryptoKeyPair

This class creates key pairs for the RSA algorithm.

Author:

Rolf Wendolsky

Field Summary

static int

KEY_LENGTH_2048

Fields inherited from class anon.crypto.AsymmetricCryptoKeyPair

KEY_LENGTH_1024, KEY_LENGTH_512

Constructor Summary

RSAKeyPair(MyRSAPrivateKey a_privateKey)
Creates a new rsa key pair.

Method Summary

static RSAKeyPair	getInstance(java.math.BigInteger a_publicExponent, java.security.SecureRandom a_random, int a_strength, int a_certainty) Creates a new rsa key pair.
static RSAKeyPair	getInstance(java.security.SecureRandom a_random, int a_strength, int a_certainty) Creates a new rsa key pair with a public exponent of 65537.

Methods inherited from class anon.crypto.AsymmetricCryptoKeyPair

createPublicKey, getPrivate, getPublic, isValidKeyPair

Methods inherited from class java.lang.Object

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

Field Detail

KEY_LENGTH_2048

public static final int KEY_LENGTH_2048

See Also:

Constant Field Values

Constructor Detail

RSAKeyPair

public RSAKeyPair(MyRSAPrivateKey a_privateKey)

Creates a new rsa key pair.

Parameters:

a_privateKey - an rsa private key

Method Detail

getInstance

public static RSAKeyPair getInstance(java.math.BigInteger a_publicExponent,
                                     java.security.SecureRandom a_random,
                                     int a_strength,
                                     int a_certainty)

Creates a new rsa key pair.

Parameters:

a_publicExponent - the public encyption exponent; a small integer denoted e, often a prime close to a power of 2, for example 3, 5, 7, 17, 257, or 65537.

a_random - a random number generator

a_strength - The bit-length of n = p*q.

a_certainty - The certainty, that the generated numbers are prime.

Returns:

a key pair or null if no key pair could be created with these parameters

getInstance

public static RSAKeyPair getInstance(java.security.SecureRandom a_random,
                                     int a_strength,
                                     int a_certainty)

Creates a new rsa key pair with a public exponent of 65537.

Parameters:

a_random - a random number generator

a_strength - The bit-length of n = p*q.

a_certainty - The certainty, that the generated numbers are prime.

Returns:

a key pair or null if no key pair could be created with these parameters