package com.google.bitcoin.bouncycastle.crypto.params; import java.math.BigInteger; import java.security.SecureRandom; import com.google.bitcoin.bouncycastle.crypto.KeyGenerationParameters; public class RSAKeyGenerationParameters extends KeyGenerationParameters { private BigInteger publicExponent; private int certainty; public RSAKeyGenerationParameters( BigInteger publicExponent, SecureRandom random, int strength, int certainty) { super(random, strength); if (strength < 12) { throw new IllegalArgumentException("key strength too small"); } // // public exponent cannot be even // if (!publicExponent.testBit(0)) { throw new IllegalArgumentException("public exponent cannot be even"); } this.publicExponent = publicExponent; this.certainty = certainty; } public BigInteger getPublicExponent() { return publicExponent; } public int getCertainty() { return certainty; } }