Pleasse Help Me (RSA Key Generation Problem)

Question

Hi All,
The following code throws an exception called "java.lang.NoClassDefFoundError: java/security/SecureRandom: Cannot create class in system package"
private void generateRSAKeyPair() throws Exception
          try
               System.out.println("Inside try");
               SecureRandom theSecureRandom = new SecureRandom();
               BigInteger thePublicExponent = new BigInteger("10001", 16);
               RSAKeyGenerationParameters theRSAKeyGenParam =
               new RSAKeyGenerationParameters(thePublicExponent, theSecureRandom, 1024, 80);
               RSAKeyPairGenerator theRSAKeyPairGen = new RSAKeyPairGenerator();
               theRSAKeyPairGen.init(theRSAKeyGenParam);
               AsymmetricCipherKeyPair theKeyPair = theRSAKeyPairGen.generateKeyPair();
               _RSAPrivateKey = (RSAPrivateCrtKeyParameters) theKeyPair.getPrivate();
               _RSAPublicKey = (RSAKeyParameters) theKeyPair.getPublic();
          catch (Exception e)
               e.printStackTrace();
Please tell me the reason

Answer 1

Too many variables - memory, CPU, architecture, do you have hardware crypto, etc. etc. etc.. But it's quite expensive to generate RSA keypairs, your numbers look "reasonable" (given that I know nothing about the hardware you're running them on) to me.
Grant