Examples of DHPublicKeyParameters

Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        // calculate the public key.
        //
        y = g.modPow(x, p);

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

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        // calculate the public key.
        //
        y = g.modPow(x, p);

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

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            BigInteger p = new BigInteger(1, pBytes);
            BigInteger g = new BigInteger(1, gBytes);
            BigInteger Ys = new BigInteger(1, YsBytes);

            this.dhAgreeServerPublicKey = TlsDHUtils.validateDHPublicKey(new DHPublicKeyParameters(Ys,
                new DHParameters(p, g)));
        }
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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     * message in the agreement sequence.
     */
    public BigInteger calculateAgreement(
        CipherParameters   pubKey)
    {
        DHPublicKeyParameters   pub = (DHPublicKeyParameters)pubKey;

        if (!pub.getParameters().equals(dhParams))
        {
            throw new IllegalArgumentException("Diffie-Hellman public key has wrong parameters.");
        }

        return pub.getY().modPow(key.getX(), dhParams.getP());
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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                // TODO Check pgenCounter size?

                validation = new DHValidationParameters(seed, pgenCounter.intValue());
            }

            return new DHPublicKeyParameters(y, new DHParameters(p, g, q, j, validation));
        }
        else if (algId.getAlgorithm().equals(PKCSObjectIdentifiers.dhKeyAgreement))
        {
            DHParameter params = DHParameter.getInstance(algId.getParameters());
            ASN1Integer derY = (ASN1Integer)keyInfo.parsePublicKey();

            BigInteger lVal = params.getL();
            int l = lVal == null ? 0 : lVal.intValue();
            DHParameters dhParams = new DHParameters(params.getP(), params.getG(), null, l);

            return new DHPublicKeyParameters(derY.getValue(), dhParams);
        }
        else if (algId.getAlgorithm().equals(OIWObjectIdentifiers.elGamalAlgorithm))
        {
            ElGamalParameter params = new ElGamalParameter((ASN1Sequence)algId.getParameters());
            ASN1Integer derY = (ASN1Integer)keyInfo.parsePublicKey();
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        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.params.DHPublicKeyParameters

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    {
        byte[] V = new byte[(dhParams.getP().bitLength() + 7) / 8];

        stream.read(V, 0, V.length);

        return new DHPublicKeyParameters(new BigInteger(1, V), dhParams);
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        if (!signer.verifySignature(sigBytes))
        {
            throw new TlsFatalAlert(AlertDescription.decrypt_error);
        }

        this.dhAgreeServerPublicKey = validateDHPublicKey(new DHPublicKeyParameters(Ys, new DHParameters(p, g)));
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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     * message in the agreement sequence.
     */
    public BigInteger calculateAgreement(
        CipherParameters   pubKey)
    {
        DHPublicKeyParameters   pub = (DHPublicKeyParameters)pubKey;

        if (!pub.getParameters().equals(dhParams))
        {
            throw new IllegalArgumentException("Diffie-Hellman public key has wrong parameters.");
        }

        return pub.getY().modPow(key.getX(), dhParams.getP());
    }
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Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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                 || algId.getObjectId().equals(X9ObjectIdentifiers.dhpublicnumber))
        {
            DHParameter params = new DHParameter((ASN1Sequence)keyInfo.getAlgorithmId().getParameters());
            DERInteger  derY = (DERInteger)keyInfo.getPublicKey();
           
            return new DHPublicKeyParameters(derY.getValue(), new DHParameters(params.getP(), params.getG()));
        }
        else if (algId.getObjectId().equals(OIWObjectIdentifiers.elGamalAlgorithm))
        {
            ElGamalParameter    params = new ElGamalParameter((ASN1Sequence)keyInfo.getAlgorithmId().getParameters());
            DERInteger          derY = (DERInteger)keyInfo.getPublicKey();
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