Setting the key size

Hi,

I would like to set the key size for encryption. My code is the following:

privatestaticfinal String algorithm ="RSA/None/NoPadding";

privatestaticfinal String keyAlgorithm ="RSA";

privatestaticfinal String providor ="BC";

privatestatic Cipher cipher =null;

privatestatic KeyFactory keyFactory =null;

privatestatic RSAPublicKeySpec pubKeySpec =null;

privatestatic RSAPrivateKeySpec privKeySpec =null;

privatestatic RSAPublicKey pubKey =null;

privatestatic RSAPrivateKey privKey =null;

static{

Security.addProvider(new BouncyCastleProvider());

try{

cipher = Cipher.getInstance(algorithm, providor);

keyFactory = KeyFactory.getInstance(keyAlgorithm, providor);

BigInteger modulus =new BigInteger("d46f473a2d746537de2056ae3092c451", 16);

BigInteger publicExponent =new BigInteger("11", 16);

BigInteger privateExponent =new BigInteger("57791d5430d593164082036ad8b29fb1", 16);

System.out.println(publicExponent +":" + privateExponent);

pubKeySpec =new RSAPublicKeySpec(modulus, publicExponent);

privKeySpec =new RSAPrivateKeySpec(modulus, privateExponent);

pubKey = (RSAPublicKey) keyFactory.generatePublic(pubKeySpec);

privKey = (RSAPrivateKey) keyFactory.generatePrivate(privKeySpec);

}catch (Throwable t){

t.printStackTrace();

}

}

I imagine that the key size is determined by the modulus, but how do I set it to 1024 rather than the 128 which it now is I presume?

Thanks in advance

Michael

[3128 byte] By [MichaelCoucka] at [2007-10-3 2:42:21]