1 package org.bouncycastle.crypto.params; 2 3 import java.math.BigInteger; 4 import java.security.SecureRandom; 5 6 import org.bouncycastle.crypto.KeyGenerationParameters; 7 8 public class RSAKeyGenerationParameters 9 extends KeyGenerationParameters 10 { 11 private BigInteger publicExponent; 12 private int certainty; 13 14 public RSAKeyGenerationParameters( 15 BigInteger publicExponent, 16 SecureRandom random, 17 int strength, 18 int certainty) 19 { 20 super(random, strength); 21 22 if (strength < 12) 23 { 24 throw new IllegalArgumentException("key strength too small"); 25 } 26 27 // 28 // public exponent cannot be even 29 // 30 if (!publicExponent.testBit(0)) 31 { 32 throw new IllegalArgumentException("public exponent cannot be even"); 33 } 34 35 this.publicExponent = publicExponent; 36 this.certainty = certainty; 37 } 38 39 public BigInteger getPublicExponent() 40 { 41 return publicExponent; 42 } 43 44 public int getCertainty() 45 { 46 return certainty; 47 } 48 } 49
