Examples of AsymmetricCipherKeyPair

Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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            engine.init(param);
            initialised = true;
        }

        AsymmetricCipherKeyPair pair = engine.generateKeyPair();
        ElGamalPublicKeyParameters pub = (ElGamalPublicKeyParameters)pair.getPublic();
        ElGamalPrivateKeyParameters priv = (ElGamalPrivateKeyParameters)pair.getPrivate();

        return new KeyPair(new BCElGamalPublicKey(pub),
            new BCElGamalPrivateKey(priv));
    }
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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        this.keyEncoder = keyEncoder;
    }

    public EphemeralKeyPair generate()
    {
        AsymmetricCipherKeyPair eph = gen.generateKeyPair();

        // Encode the ephemeral public key
         return new EphemeralKeyPair(eph, keyEncoder);
    }
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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        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(
            new ElGamalPublicKeyParameters(y, egp),
            new ElGamalPrivateKeyParameters(x, egp));
    }
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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     */
    public BigInteger calculateMessage()
    {
        DHKeyPairGenerator dhGen = new DHKeyPairGenerator();
        dhGen.init(new DHKeyGenerationParameters(random, dhParams));
        AsymmetricCipherKeyPair dhPair = dhGen.generateKeyPair();

        this.privateValue = ((DHPrivateKeyParameters)dhPair.getPrivate()).getX();

        return ((DHPublicKeyParameters)dhPair.getPublic()).getY();
    }
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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        DHParameters dhp = param.getParameters();

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

        return new AsymmetricCipherKeyPair(
            new DHPublicKeyParameters(y, dhp),
            new DHPrivateKeyParameters(x, dhp));
    }
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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        DSAParameters dsaParams = param.getParameters();

        BigInteger x = generatePrivateKey(dsaParams.getQ(), param.getRandom());
        BigInteger y = calculatePublicKey(dsaParams.getP(), dsaParams.getG(), x);

        return new AsymmetricCipherKeyPair(
            new DSAPublicKeyParameters(y, dsaParams),
            new DSAPrivateKeyParameters(x, dsaParams));
    }
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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public class DSTU4145KeyPairGenerator
    extends ECKeyPairGenerator
{
    public AsymmetricCipherKeyPair generateKeyPair()
    {
        AsymmetricCipherKeyPair pair = super.generateKeyPair();

        ECPublicKeyParameters pub = (ECPublicKeyParameters)pair.getPublic();
        ECPrivateKeyParameters priv = (ECPrivateKeyParameters)pair.getPrivate();

        pub = new ECPublicKeyParameters(pub.getQ().negate(), pub.getParameters());

        return new AsymmetricCipherKeyPair(pub, priv);
    }
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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            if (!initialised)
            {
                initialize(strength, new SecureRandom());
            }

            AsymmetricCipherKeyPair     pair = engine.generateKeyPair();
            ECPublicKeyParameters       pub = (ECPublicKeyParameters)pair.getPublic();
            ECPrivateKeyParameters      priv = (ECPrivateKeyParameters)pair.getPrivate();

            if (ecParams instanceof ECParameterSpec)
            {
                ECParameterSpec p = (ECParameterSpec)ecParams;
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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    public static DHPrivateKeyParameters generateEphemeralClientKeyExchange(SecureRandom random,
                                                                            DHParameters dhParams, OutputStream output)
        throws IOException
    {

        AsymmetricCipherKeyPair dhAgreeClientKeyPair = generateDHKeyPair(random, dhParams);
        DHPrivateKeyParameters dhAgreeClientPrivateKey = (DHPrivateKeyParameters)dhAgreeClientKeyPair
            .getPrivate();

        BigInteger Yc = ((DHPublicKeyParameters)dhAgreeClientKeyPair.getPublic()).getY();
        byte[] keData = BigIntegers.asUnsignedByteArray(Yc);
        TlsUtils.writeOpaque16(keData, output);

        return dhAgreeClientPrivateKey;
    }
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Examples of org.bouncycastle.crypto.AsymmetricCipherKeyPair

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        }

        BigInteger r = null;
        BigInteger s = null;

        AsymmetricCipherKeyPair tempPair;
        do // generate r
        {
            // generate another, but very temporary, key pair using
            // the same EC parameters
            ECKeyPairGenerator keyGen = new ECKeyPairGenerator();
           
            keyGen.init(new ECKeyGenerationParameters(privKey.getParameters(), this.random));
           
            tempPair = keyGen.generateKeyPair();

            //    BigInteger Vx = tempPair.getPublic().getW().getAffineX();
            ECPublicKeyParameters V = (ECPublicKeyParameters)tempPair.getPublic();        // get temp's public key
            BigInteger Vx = V.getQ().getX().toBigInteger();        // get the point's x coordinate
           
            r = Vx.add(e).mod(n);
        }
        while (r.equals(ECConstants.ZERO));

        // generate s
        BigInteger x = privKey.getD();                // private key value
        BigInteger u = ((ECPrivateKeyParameters)tempPair.getPrivate()).getD();    // temp's private key value
        s = u.subtract(r.multiply(x)).mod(n);

        BigInteger[]  res = new BigInteger[2];
        res[0] = r;
        res[1] = s;
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