Examples of ElGamalParameters

Examples of org.bouncycastle.crypto.params.ElGamalParameters

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    public AsymmetricCipherKeyPair generateKeyPair()
    {
        BigInteger           p, g, x, y;
        int                  qLength = param.getStrength() - 1;
        ElGamalParameters    elParams = param.getParameters();

        p = elParams.getP();
        g = elParams.getG();
   
        //
        // calculate the private key
        //
    x = new BigInteger(qLength, param.getRandom());
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Examples of org.bouncycastle.crypto.params.ElGamalParameters

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            }

            break;
        }

        return new ElGamalParameters(p, g);
    }
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Examples of org.bouncycastle.crypto.params.ElGamalParameters

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

            return new ElGamalPublicKeyParameters(k.getY(),
                new ElGamalParameters(k.getParams().getP(), k.getParams().getG()));
        }

        throw new InvalidKeyException("can't identify ElGamal public key.");
    }
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Examples of org.bouncycastle.crypto.params.ElGamalParameters

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

            return new ElGamalPrivateKeyParameters(k.getX(),
                new ElGamalParameters(k.getParams().getP(), k.getParams().getG()));
        }
                       
        throw new InvalidKeyException("can't identify ElGamal private key.");
    }
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Examples of org.bouncycastle.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", "BC");
                params.init(new ElGamalParameterSpec(p.getP(), p.getG()));
            }
            catch (Exception e)
            {
                throw new RuntimeException(e.getMessage());
            }
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Examples of org.bouncycastle.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", BouncyCastleProvider.PROVIDER_NAME);
            params.init(new DHParameterSpec(p.getP(), p.getG(), l));
        }
        catch (Exception e)
        {
            throw new RuntimeException(e.getMessage());
        }
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Examples of org.bouncycastle.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.bouncycastle.crypto.params.ElGamalParameters

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        {
            DHParameterSpec dhParams = BouncyCastleProvider.CONFIGURATION.getDHDefaultParameters(strength);

            if (dhParams != null)
            {
                param = new ElGamalKeyGenerationParameters(random, new ElGamalParameters(dhParams.getP(), dhParams.getG(), dhParams.getL()));
            }
            else
            {
                ElGamalParametersGenerator pGen = new ElGamalParametersGenerator();
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Examples of org.bouncycastle.crypto.params.ElGamalParameters

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

            return new ElGamalPublicKeyParameters(k.getY(),
                new ElGamalParameters(k.getParameters().getP(), k.getParameters().getG()));
        }
        else if (key instanceof DHPublicKey)
        {
            DHPublicKey    k = (DHPublicKey)key;

            return new ElGamalPublicKeyParameters(k.getY(),
                new ElGamalParameters(k.getParams().getP(), k.getParams().getG()));
        }

        throw new InvalidKeyException("can't identify public key for El Gamal.");
    }
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Examples of org.bouncycastle.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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