Examples of ElGamalParameters

Examples of org.bouncycastle2.crypto.params.ElGamalParameters

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        if (key instanceof ElGamalPrivateKey)
        {
            ElGamalPrivateKey    k = (ElGamalPrivateKey)key;

            return new ElGamalPrivateKeyParameters(k.getX(),
                new ElGamalParameters(k.getParameters().getP(), k.getParameters().getG()));
        }
        else if (key instanceof DHPrivateKey)
        {
            DHPrivateKey    k = (DHPrivateKey)key;

            return new ElGamalPrivateKeyParameters(k.getX(),
                new ElGamalParameters(k.getParams().getP(), k.getParams().getG()));
        }
                       
        throw new InvalidKeyException("can't identify private key for El Gamal.");
    }
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Examples of org.bouncycastle2.crypto.params.ElGamalParameters

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            if (params instanceof ElGamalParameterSpec)
            {
                ElGamalParameterSpec     elParams = (ElGamalParameterSpec)params;

                param = new ElGamalKeyGenerationParameters(random, new ElGamalParameters(elParams.getP(), elParams.getG()));
            }
            else
            {
                DHParameterSpec     dhParams = (DHParameterSpec)params;

                param = new ElGamalKeyGenerationParameters(random, new ElGamalParameters(dhParams.getP(), dhParams.getG(), dhParams.getL()));
            }

            engine.init(param);
            initialised = true;
        }
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Examples of org.bouncycastle2.crypto.params.ElGamalParameters

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            else
            {
                pGen.init(strength, 20, new SecureRandom());
            }

            ElGamalParameters p = pGen.generateParameters();

            AlgorithmParameters params;

            try
            {
                params = AlgorithmParameters.getInstance("ElGamal", "BC2");
                params.init(new DHParameterSpec(p.getP(), p.getG(), l));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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Examples of org.bouncycastle2.crypto.params.ElGamalParameters

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    }

    public AsymmetricCipherKeyPair generateKeyPair()
    {
        DHKeyGeneratorHelper helper = DHKeyGeneratorHelper.INSTANCE;
        ElGamalParameters egp = param.getParameters();
        DHParameters dhp = new DHParameters(egp.getP(), egp.getG(), null, egp.getL()); 

        BigInteger x = helper.calculatePrivate(dhp, param.getRandom());
        BigInteger y = helper.calculatePublic(dhp, x);

        return new AsymmetricCipherKeyPair(
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Examples of org.bouncycastle2.crypto.params.ElGamalParameters

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        BigInteger p = safePrimes[0];
        BigInteger q = safePrimes[1];
        BigInteger g = DHParametersHelper.selectGenerator(p, q, random);

        return new ElGamalParameters(p, g);
    }
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