Examples of org.bouncycastle.crypto.agreement.DHAgreement

Package org.bouncycastle.crypto.agreement

Examples of org.bouncycastle.crypto.agreement.DHAgreement

org.bouncycastle.crypto.agreement.DHAgreement
a Diffie-Hellman key exchange engine.
note: This uses MTI/A0 key agreement in order to make the key agreement secure against passive attacks. If you're doing Diffie-Hellman and both parties have long term public keys you should look at using this. For further information have a look at RFC 2631.
It's possible to extend this to more than two parties as well, for the moment that is left as an exercise for the reader.

        DHPrivateKeyParameters      pv2 = (DHPrivateKeyParameters)pair.getPrivate();


        //
        // two way
        //
        DHAgreement    e1 = new DHAgreement();
        DHAgreement    e2 = new DHAgreement();


        e1.init(pv1);
        e2.init(pv2);


        BigInteger  m1 = e1.calculateMessage();
        BigInteger  m2 = e2.calculateMessage();


        BigInteger   k1 = e1.calculateAgreement(pu2, m2);
        BigInteger   k2 = e2.calculateAgreement(pu1, m1);


        if (!k1.equals(k2))
        {
            return new SimpleTestResult(false, size + " bit 2-way test failed");
        }

View Full Code Here

TOP

Related Classes of org.bouncycastle.crypto.agreement.DHAgreement

org.bouncycastle.crypto.AsymmetricCipherKeyPair

org.bouncycastle.crypto.generators.DHKeyPairGenerator

org.bouncycastle.crypto.params.AsymmetricKeyParameter

org.bouncycastle.crypto.params.DHKeyGenerationParameters

org.bouncycastle.crypto.params.ParametersWithRandom

org.bouncycastle.crypto.test.DHTest

java.math.BigInteger

java.security.SecureRandom

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.