Example usage for org.bouncycastle.crypto.params DSAParameters DSAParameters

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.params DSAParameters DSAParameters.

Prototype

public DSAParameters(BigInteger p, BigInteger q, BigInteger g, DSAValidationParameters params) 

Source Link

Usage

From source file:com.licel.jcardsim.crypto.DSAKeyImpl.java

License:Apache License

/**
 * Get DSA KeyGeneration Defaults Parameters
 * {@link http://docs.oracle.com/javase/6/docs/technotes/guides/security/StandardNames.html#alg}
 *
 * @param keySize key size in bits/*w ww  . j  a  va2s. c  o m*/
 * @param rnd Secure Random Generator
 */
static KeyGenerationParameters getDefaultKeyGenerationParameters(short keySize, SecureRandom rnd) {
    BigInteger p = null;
    BigInteger q = null;
    BigInteger g = null;
    BigInteger seed = null;
    short counter = 0;
    switch (keySize) {
    case 512:
        counter = 123;
        p = new BigInteger("fca682ce8e12caba26efccf7110e526db078b05edecbcd1eb4a208f3"
                + "ae1617ae01f35b91a47e6df63413c5e12ed0899bcd132acd50d99151" + "bdc43ee737592e17", 16);
        q = new BigInteger("962eddcc369cba8ebb260ee6b6a126d9346e38c5", 16);
        g = new BigInteger("678471b27a9cf44ee91a49c5147db1a9aaf244f05a434d6486931d2d"
                + "14271b9e35030b71fd73da179069b32e2935630e1c2062354d0da20a" + "6c416e50be794ca4", 16);
        seed = new BigInteger("b869c82b35d70e1b1ff91b28e37a62ecdc34409b", 16);
        break;
    case 768:
        counter = 263;
        p = new BigInteger("e9e642599d355f37c97ffd3567120b8e25c9cd43e927b3a9670fbec5"
                + "d890141922d2c3b3ad2480093799869d1e846aab49fab0ad26d2ce6a"
                + "22219d470bce7d777d4a21fbe9c270b57f607002f3cef8393694cf45" + "ee3688c11a8c56ab127a3daf", 16);
        q = new BigInteger("9cdbd84c9f1ac2f38d0f80f42ab952e7338bf511", 16);
        g = new BigInteger("30470ad5a005fb14ce2d9dcd87e38bc7d1b1c5facbaecbe95f190aa7"
                + "a31d23c4dbbcbe06174544401a5b2c020965d8c2bd2171d366844577"
                + "1f74ba084d2029d83c1c158547f3a9f1a2715be23d51ae4d3e5a1f6a" + "7064f316933a346d3f529252", 16);
        seed = new BigInteger("77d0f8c4dad15eb8c4f2f8d6726cefd96d5bb399", 16);
        break;
    case 1024:
        counter = 92;
        p = new BigInteger("fd7f53811d75122952df4a9c2eece4e7f611b7523cef4400c31e3f80"
                + "b6512669455d402251fb593d8d58fabfc5f5ba30f6cb9b556cd7813b"
                + "801d346ff26660b76b9950a5a49f9fe8047b1022c24fbba9d7feb7c6"
                + "1bf83b57e7c6a8a6150f04fb83f6d3c51ec3023554135a169132f675"
                + "f3ae2b61d72aeff22203199dd14801c7", 16);
        q = new BigInteger("9760508f15230bccb292b982a2eb840bf0581cf5", 16);
        g = new BigInteger("f7e1a085d69b3ddecbbcab5c36b857b97994afbbfa3aea82f9574c0b"
                + "3d0782675159578ebad4594fe67107108180b449167123e84c281613"
                + "b7cf09328cc8a6e13c167a8b547c8d28e0a3ae1e2bb3a675916ea37f"
                + "0bfa213562f1fb627a01243bcca4f1bea8519089a883dfe15ae59f06"
                + "928b665e807b552564014c3bfecf492a", 16);
        seed = new BigInteger("8d5155894229d5e689ee01e6018a237e2cae64cd", 16);
        break;
    default:
        CryptoException.throwIt(CryptoException.ILLEGAL_VALUE);
        break;
    }
    return new DSAKeyGenerationParameters(rnd,
            new DSAParameters(p, q, g, new DSAValidationParameters(seed.toByteArray(), counter)));

}

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