Examples of DHPublicKeyParameters

Examples of org.bouncycastle.crypto.params.DHPublicKeyParameters

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        p = dhParams.getP();
        x = helper.calculatePrivate(p, param.getRandom(), dhParams.getL());
        y = helper.calculatePublic(p, dhParams.getG(), x);

        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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        p = dhParams.getP();
        x = helper.calculatePrivate(p, param.getRandom(), dhParams.getJ());
        y = helper.calculatePublic(p, dhParams.getG(), x);

        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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        p = dhParams.getP();
        x = helper.calculatePrivate(p, param.getRandom(), dhParams.getJ());
        y = helper.calculatePublic(p, dhParams.getG(), x);

        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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                 || 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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Examples of org.bouncycastle2.crypto.params.DHPublicKeyParameters

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

            return new DHPublicKeyParameters(k.getY(),
                new DHParameters(k.getParams().getP(), k.getParams().getG(), null, k.getParams().getL()));
        }

        throw new InvalidKeyException("can't identify DH public key.");
    }
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Examples of org.bouncycastle2.crypto.params.DHPublicKeyParameters

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                initialised = true;
            }

            AsymmetricCipherKeyPair pair = engine.generateKeyPair();
            DHPublicKeyParameters   pub = (DHPublicKeyParameters)pair.getPublic();
            DHPrivateKeyParameters  priv = (DHPrivateKeyParameters)pair.getPrivate();

            return new KeyPair(new JCEDHPublicKey(pub),
                               new JCEDHPrivateKey(priv));
        }
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Examples of org.bouncycastle2.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.bouncycastle2.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.bouncycastle2.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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