Package javax.crypto

Examples of javax.crypto.KeyAgreement

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        // U side
        //
        KeyPair U1 = g.generateKeyPair();
        KeyPair U2 = g.generateKeyPair();

        KeyAgreement uAgree = KeyAgreement.getInstance("ECMQV", "BC");
        uAgree.init(new MQVPrivateKeySpec(U1.getPrivate(), U2.getPrivate(), U2.getPublic()));

        //
        // V side
        //
        KeyPair V1 = g.generateKeyPair();
        KeyPair V2 = g.generateKeyPair();

        KeyAgreement vAgree = KeyAgreement.getInstance("ECMQV", "BC");
        vAgree.init(new MQVPrivateKeySpec(V1.getPrivate(), V2.getPrivate(), V2.getPublic()));

        //
        // agreement
        //
        uAgree.doPhase(new MQVPublicKeySpec(V1.getPublic(), V2.getPublic()), true);
        vAgree.doPhase(new MQVPublicKeySpec(U1.getPublic(), U2.getPublic()), true);

        BigInteger ux = new BigInteger(uAgree.generateSecret());
        BigInteger vx = new BigInteger(vAgree.generateSecret());

        if (!ux.equals(vx))
        {
            fail("Agreement failed");
        }
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        //
        // a side
        //
        KeyPair aKeyPair = g.generateKeyPair();

        KeyAgreement aKeyAgree = KeyAgreement.getInstance("ECDHC", "BC");

        aKeyAgree.init(aKeyPair.getPrivate());

        //
        // b side
        //
        KeyPair bKeyPair = g.generateKeyPair();

        KeyAgreement bKeyAgree = KeyAgreement.getInstance("ECDHC", "BC");

        bKeyAgree.init(bKeyPair.getPrivate());

        //
        // agreement
        //
        aKeyAgree.doPhase(bKeyPair.getPublic(), true);
        bKeyAgree.doPhase(aKeyPair.getPublic(), true);

        BigInteger  k1 = new BigInteger(aKeyAgree.generateSecret());
        BigInteger  k2 = new BigInteger(bKeyAgree.generateSecret());

        if (!k1.equals(k2))
        {
            fail("2-way test failed");
        }
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    public byte[] generateKek(PrivateKey privateKey) throws NoSuchAlgorithmException, InvalidKeySpecException, InvalidKeyException {
        // get the ValueLink public key
        PublicKey vlPublic = this.getValueLinkPublicKey();

        // generate shared secret key
        KeyAgreement ka = KeyAgreement.getInstance("DH");
        ka.init(privateKey);
        ka.doPhase(vlPublic, true);
        byte[] secretKey = ka.generateSecret();

        if (debug) {
            Debug.logInfo("Secret Key : " + StringUtil.toHexString(secretKey) + " / " + secretKey.length,  module);
        }
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        //
        // a side
        //
        KeyPair aKeyPair = keyGen.generateKeyPair();

        KeyAgreement aKeyAgree = KeyAgreement.getInstance("DH", "BC");

        checkKeySize(privateValueSize, aKeyPair);

        aKeyAgree.init(aKeyPair.getPrivate());

        //
        // b side
        //
        KeyPair bKeyPair = keyGen.generateKeyPair();

        KeyAgreement bKeyAgree = KeyAgreement.getInstance("DH", "BC");

        checkKeySize(privateValueSize, bKeyPair);

        bKeyAgree.init(bKeyPair.getPrivate());

        //
        // agreement
        //
        aKeyAgree.doPhase(bKeyPair.getPublic(), true);
        bKeyAgree.doPhase(aKeyPair.getPublic(), true);

        BigInteger  k1 = new BigInteger(aKeyAgree.generateSecret());
        BigInteger  k2 = new BigInteger(bKeyAgree.generateSecret());

        if (!k1.equals(k2))
        {
            fail(size + " bit 2-way test failed");
        }

        //
        // public key encoding test
        //
        byte[]              pubEnc = aKeyPair.getPublic().getEncoded();
        KeyFactory          keyFac = KeyFactory.getInstance("DH", "BC");
        X509EncodedKeySpec  pubX509 = new X509EncodedKeySpec(pubEnc);
        DHPublicKey         pubKey = (DHPublicKey)keyFac.generatePublic(pubX509);
        DHParameterSpec     spec = pubKey.getParams();

        if (!spec.getG().equals(dhParams.getG()) || !spec.getP().equals(dhParams.getP()))
        {
            fail(size + " bit public key encoding/decoding test failed on parameters");
        }

        if (!((DHPublicKey)aKeyPair.getPublic()).getY().equals(pubKey.getY()))
        {
            fail(size + " bit public key encoding/decoding test failed on y value");
        }

        //
        // public key serialisation test
        //
        ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
        ObjectOutputStream      oOut = new ObjectOutputStream(bOut);

        oOut.writeObject(aKeyPair.getPublic());

        ByteArrayInputStream   bIn = new ByteArrayInputStream(bOut.toByteArray());
        ObjectInputStream      oIn = new ObjectInputStream(bIn);

        pubKey = (DHPublicKey)oIn.readObject();
        spec = pubKey.getParams();

        if (!spec.getG().equals(dhParams.getG()) || !spec.getP().equals(dhParams.getP()))
        {
            fail(size + " bit public key serialisation test failed on parameters");
        }

        if (!((DHPublicKey)aKeyPair.getPublic()).getY().equals(pubKey.getY()))
        {
            fail(size + " bit public key serialisation test failed on y value");
        }

        //
        // private key encoding test
        //
        byte[]              privEnc = aKeyPair.getPrivate().getEncoded();
        PKCS8EncodedKeySpec privPKCS8 = new PKCS8EncodedKeySpec(privEnc);
        DHPrivateKey        privKey = (DHPrivateKey)keyFac.generatePrivate(privPKCS8);

        spec = privKey.getParams();

        if (!spec.getG().equals(dhParams.getG()) || !spec.getP().equals(dhParams.getP()))
        {
            fail(size + " bit private key encoding/decoding test failed on parameters");
        }

        if (!((DHPrivateKey)aKeyPair.getPrivate()).getX().equals(privKey.getX()))
        {
            fail(size + " bit private key encoding/decoding test failed on y value");
        }

        //
        // private key serialisation test
        //
        bOut = new ByteArrayOutputStream();
        oOut = new ObjectOutputStream(bOut);

        oOut.writeObject(aKeyPair.getPrivate());

        bIn = new ByteArrayInputStream(bOut.toByteArray());
        oIn = new ObjectInputStream(bIn);

        privKey = (DHPrivateKey)oIn.readObject();
        spec = privKey.getParams();

        if (!spec.getG().equals(dhParams.getG()) || !spec.getP().equals(dhParams.getP()))
        {
            fail(size + " bit private key serialisation test failed on parameters");
        }

        if (!((DHPrivateKey)aKeyPair.getPrivate()).getX().equals(privKey.getX()))
        {
            fail(size + " bit private key serialisation test failed on y value");
        }

        //
        // three party test
        //
        KeyPairGenerator aPairGen = KeyPairGenerator.getInstance("DH", "BC");
        aPairGen.initialize(spec);
        KeyPair aPair = aPairGen.generateKeyPair();

        KeyPairGenerator bPairGen = KeyPairGenerator.getInstance("DH", "BC");
        bPairGen.initialize(spec);
        KeyPair bPair = bPairGen.generateKeyPair();

        KeyPairGenerator cPairGen = KeyPairGenerator.getInstance("DH", "BC");
        cPairGen.initialize(spec);
        KeyPair cPair = cPairGen.generateKeyPair();

        aKeyAgree.init(aPair.getPrivate());

        bKeyAgree.init(bPair.getPrivate());

        KeyAgreement cKeyAgree = KeyAgreement.getInstance("DH", "BC");
        cKeyAgree.init(cPair.getPrivate());

        Key ac = aKeyAgree.doPhase(cPair.getPublic(), false);

        Key ba = bKeyAgree.doPhase(aPair.getPublic(), false);

        Key cb = cKeyAgree.doPhase(bPair.getPublic(), false);

        aKeyAgree.doPhase(cb, true);

        bKeyAgree.doPhase(ac, true);

        cKeyAgree.doPhase(ba, true);

        BigInteger aShared = new BigInteger(aKeyAgree.generateSecret());
        BigInteger bShared = new BigInteger(bKeyAgree.generateSecret());
        BigInteger cShared = new BigInteger(cKeyAgree.generateSecret());

        if (!aShared.equals(bShared))
        {
            fail(size + " bit 3-way test failed (a and b differ)");
        }
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        //
        // a side
        //
        KeyPair aKeyPair = keyGen.generateKeyPair();

        KeyAgreement aKeyAgree = KeyAgreement.getInstance("DH", "BC");

        checkKeySize(privateValueSize, aKeyPair);

        aKeyAgree.init(aKeyPair.getPrivate());

        //
        // b side
        //
        KeyPair bKeyPair = keyGen.generateKeyPair();

        KeyAgreement bKeyAgree = KeyAgreement.getInstance("DH", "BC");

        checkKeySize(privateValueSize, bKeyPair);

        bKeyAgree.init(bKeyPair.getPrivate());

        //
        // agreement
        //
        aKeyAgree.doPhase(bKeyPair.getPublic(), true);
        bKeyAgree.doPhase(aKeyPair.getPublic(), true);

        SecretKey k1 = aKeyAgree.generateSecret(PKCSObjectIdentifiers.id_alg_CMS3DESwrap.getId());
        SecretKey k2 = aKeyAgree.generateSecret(PKCSObjectIdentifiers.id_alg_CMS3DESwrap.getId());
    }
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        //
        // a side
        //
        KeyPair aKeyPair = g.generateKeyPair();

        KeyAgreement aKeyAgree = KeyAgreement.getInstance(algorithm, "BC");

        aKeyAgree.init(aKeyPair.getPrivate());

        //
        // b side
        //
        KeyPair bKeyPair = g.generateKeyPair();

        KeyAgreement bKeyAgree = KeyAgreement.getInstance(algorithm, "BC");

        bKeyAgree.init(bKeyPair.getPrivate());

        //
        // agreement
        //
        aKeyAgree.doPhase(bKeyPair.getPublic(), true);
        bKeyAgree.doPhase(aKeyPair.getPublic(), true);

        BigInteger  k1 = new BigInteger(aKeyAgree.generateSecret());
        BigInteger  k2 = new BigInteger(bKeyAgree.generateSecret());

        if (!k1.equals(k2))
        {
            fail(algorithm + " 2-way test failed");
        }
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    private void testExceptions()
    {
        try
        {
            KeyAgreement aKeyAgree = KeyAgreement.getInstance("DH", "BC");

            aKeyAgree.generateSecret("DES");
        }
        catch (IllegalStateException e)
        {
            // okay
        }
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        keyGen.initialize(dhParams);

        KeyPair kp = keyGen.generateKeyPair();

        KeyAgreement keyAgreement = KeyAgreement.getInstance("DH", "BC");

        keyAgreement.init(kp.getPrivate());
        keyAgreement.doPhase(kp.getPublic(), true);

        SecretKey key = keyAgreement.generateSecret("DES");

        if (key.getEncoded().length != 8)
        {
            fail("DES length wrong");
        }

        if (!DESKeySpec.isParityAdjusted(key.getEncoded(), 0))
        {
            fail("DES parity wrong");
        }

        key = keyAgreement.generateSecret("DESEDE");

        if (key.getEncoded().length != 24)
        {
            fail("DESEDE length wrong");
        }

        if (!DESedeKeySpec.isParityAdjusted(key.getEncoded(), 0))
        {
            fail("DESEDE parity wrong");
        }

        key = keyAgreement.generateSecret("Blowfish");

        if (key.getEncoded().length != 56)
        {
            fail("Blowfish length wrong");
        }
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        //
        // a side
        //
        KeyPair aKeyPair = g.generateKeyPair();

        KeyAgreement aKeyAgree = KeyAgreement.getInstance("ECDHC", "BC");

        aKeyAgree.init(aKeyPair.getPrivate());

        //
        // b side
        //
        KeyPair bKeyPair = g.generateKeyPair();

        KeyAgreement bKeyAgree = KeyAgreement.getInstance("ECDHC", "BC");

        bKeyAgree.init(bKeyPair.getPrivate());

        //
        // agreement
        //
        aKeyAgree.doPhase(bKeyPair.getPublic(), true);
        bKeyAgree.doPhase(aKeyPair.getPublic(), true);

        BigInteger  k1 = new BigInteger(aKeyAgree.generateSecret());
        BigInteger  k2 = new BigInteger(bKeyAgree.generateSecret());

        if (!k1.equals(k2))
        {
            fail("2-way test failed");
        }
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    public byte[] generateKek(PrivateKey privateKey) throws NoSuchAlgorithmException, InvalidKeySpecException, InvalidKeyException {
        // get the ValueLink public key
        PublicKey vlPublic = this.getValueLinkPublicKey();

        // generate shared secret key
        KeyAgreement ka = KeyAgreement.getInstance("DH");
        ka.init(privateKey);
        ka.doPhase(vlPublic, true);
        byte[] secretKey = ka.generateSecret();

        if (debug) {
            Debug.logInfo("Secret Key : " + StringUtil.toHexString(secretKey) + " / " + secretKey.length,  module);
        }
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