Examples with DHParameterSpec javax.crypto.spec.DHParameterSpec used on opensource projects

Example 6 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project robovm by robovm.

the class AlgorithmParameterGeneratorSpi method engineGenerateParameters.

protected AlgorithmParameters engineGenerateParameters() {
    DHParametersGenerator pGen = new DHParametersGenerator();
    if (random != null) {
        pGen.init(strength, 20, random);
    } else {
        pGen.init(strength, 20, new SecureRandom());
    }
    DHParameters p = pGen.generateParameters();
    AlgorithmParameters params;
    try {
        params = AlgorithmParameters.getInstance("DH", BouncyCastleProvider.PROVIDER_NAME);
        params.init(new DHParameterSpec(p.getP(), p.getG(), l));
    } catch (Exception e) {
        throw new RuntimeException(e.getMessage());
    }
    return params;
}

Example 7 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project robovm by robovm.

the class BCDHPublicKey method readObject.

private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
    in.defaultReadObject();
    this.dhSpec = new DHParameterSpec((BigInteger) in.readObject(), (BigInteger) in.readObject(), in.readInt());
    this.info = null;
}

Example 8 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project robovm by robovm.

the class ServerHandshakeImpl method processClientHello.

/**
     *
     * Processes Client Hello message.
     * Server responds to client hello message with server hello
     * and (if necessary) server certificate, server key exchange,
     * certificate request, and server hello done messages.
     */
void processClientHello() {
    CipherSuite cipher_suite;
    // check that clientHello contains CompressionMethod.null
    checkCompression: {
        for (int i = 0; i < clientHello.compression_methods.length; i++) {
            if (clientHello.compression_methods[i] == 0) {
                break checkCompression;
            }
        }
        fatalAlert(AlertProtocol.HANDSHAKE_FAILURE, "HANDSHAKE FAILURE. Incorrect client hello message");
    }
    byte[] server_version = clientHello.client_version;
    if (!ProtocolVersion.isSupported(clientHello.client_version)) {
        if (clientHello.client_version[0] >= 3) {
            // Protocol from the future, admit that the newest thing we know is TLSv1
            server_version = ProtocolVersion.TLSv1.version;
        } else {
            fatalAlert(AlertProtocol.PROTOCOL_VERSION, "PROTOCOL VERSION. Unsupported client version " + clientHello.client_version[0] + clientHello.client_version[1]);
        }
    }
    isResuming = false;
    FIND: if (clientHello.session_id.length != 0) {
        // client wishes to reuse session
        SSLSessionImpl sessionToResume;
        boolean reuseCurrent = false;
        // reuse current session
        if (session != null && Arrays.equals(session.id, clientHello.session_id)) {
            if (session.isValid()) {
                isResuming = true;
                break FIND;
            }
            reuseCurrent = true;
        }
        // find session in cash
        sessionToResume = findSessionToResume(clientHello.session_id);
        if (sessionToResume == null || !sessionToResume.isValid()) {
            if (!parameters.getEnableSessionCreation()) {
                if (reuseCurrent) {
                    // we can continue current session
                    sendWarningAlert(AlertProtocol.NO_RENEGOTIATION);
                    status = NOT_HANDSHAKING;
                    clearMessages();
                    return;
                }
                // throw AlertException
                fatalAlert(AlertProtocol.HANDSHAKE_FAILURE, "SSL Session may not be created");
            }
            session = null;
        } else {
            session = (SSLSessionImpl) sessionToResume.clone();
            isResuming = true;
        }
    }
    if (isResuming) {
        cipher_suite = session.cipherSuite;
        // clientHello.cipher_suites must include at least cipher_suite from the session
        checkCipherSuite: {
            for (int i = 0; i < clientHello.cipher_suites.length; i++) {
                if (cipher_suite.equals(clientHello.cipher_suites[i])) {
                    break checkCipherSuite;
                }
            }
            fatalAlert(AlertProtocol.HANDSHAKE_FAILURE, "HANDSHAKE FAILURE. Incorrect client hello message");
        }
    } else {
        cipher_suite = selectSuite(clientHello.cipher_suites);
        if (cipher_suite == null) {
            fatalAlert(AlertProtocol.HANDSHAKE_FAILURE, "HANDSHAKE FAILURE. NO COMMON SUITE");
        }
        if (!parameters.getEnableSessionCreation()) {
            fatalAlert(AlertProtocol.HANDSHAKE_FAILURE, "SSL Session may not be created");
        }
        session = new SSLSessionImpl(cipher_suite, parameters.getSecureRandom());
        if (engineOwner != null) {
            session.setPeer(engineOwner.getPeerHost(), engineOwner.getPeerPort());
        } else {
            session.setPeer(socketOwner.getInetAddress().getHostName(), socketOwner.getPort());
        }
    }
    recordProtocol.setVersion(server_version);
    session.protocol = ProtocolVersion.getByVersion(server_version);
    session.clientRandom = clientHello.random;
    // create server hello message
    serverHello = new ServerHello(parameters.getSecureRandom(), server_version, session.getId(), cipher_suite, //CompressionMethod.null
    (byte) 0);
    session.serverRandom = serverHello.random;
    send(serverHello);
    if (isResuming) {
        sendChangeCipherSpec();
        return;
    }
    //    create and send server certificate message if needed
    if (!cipher_suite.isAnonymous()) {
        // need to send server certificate
        X509Certificate[] certs = null;
        String certType = cipher_suite.getServerKeyType();
        if (certType == null) {
            fatalAlert(AlertProtocol.HANDSHAKE_FAILURE, "NO CERT TYPE FOR " + cipher_suite.getName());
        }
        // obtain certificates from key manager
        String alias = null;
        X509KeyManager km = parameters.getKeyManager();
        if (km instanceof X509ExtendedKeyManager) {
            X509ExtendedKeyManager ekm = (X509ExtendedKeyManager) km;
            if (this.socketOwner != null) {
                alias = ekm.chooseServerAlias(certType, null, this.socketOwner);
            } else {
                alias = ekm.chooseEngineServerAlias(certType, null, this.engineOwner);
            }
            if (alias != null) {
                certs = ekm.getCertificateChain(alias);
            }
        } else {
            alias = km.chooseServerAlias(certType, null, this.socketOwner);
            if (alias != null) {
                certs = km.getCertificateChain(alias);
            }
        }
        if (certs == null) {
            fatalAlert(AlertProtocol.HANDSHAKE_FAILURE, "NO SERVER CERTIFICATE FOUND");
            return;
        }
        session.localCertificates = certs;
        serverCert = new CertificateMessage(certs);
        privKey = km.getPrivateKey(alias);
        send(serverCert);
    }
    // create and send server key exchange message if needed
    RSAPublicKey rsakey = null;
    DHPublicKeySpec dhkeySpec = null;
    byte[] hash = null;
    BigInteger p = null;
    BigInteger g = null;
    KeyPairGenerator kpg = null;
    try {
        if (cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_RSA_EXPORT) {
            PublicKey pk = serverCert.certs[0].getPublicKey();
            if (getRSAKeyLength(pk) > 512) {
                // key is longer than 512 bits
                kpg = KeyPairGenerator.getInstance("RSA");
                kpg.initialize(512);
            }
        } else if (cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_DHE_DSS || cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_DHE_DSS_EXPORT || cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_DHE_RSA || cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_DHE_RSA_EXPORT || cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_DH_anon || cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_DH_anon_EXPORT) {
            kpg = KeyPairGenerator.getInstance("DH");
            p = new BigInteger(1, DHParameters.getPrime());
            g = new BigInteger("2");
            DHParameterSpec spec = new DHParameterSpec(p, g);
            kpg.initialize(spec);
        }
    } catch (Exception e) {
        fatalAlert(AlertProtocol.INTERNAL_ERROR, "INTERNAL ERROR", e);
    }
    if (kpg != null) {
        // need to send server key exchange message
        DigitalSignature ds = new DigitalSignature(cipher_suite.authType);
        KeyPair kp = null;
        try {
            kp = kpg.genKeyPair();
            if (cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_RSA_EXPORT) {
                rsakey = (RSAPublicKey) kp.getPublic();
            } else {
                DHPublicKey dhkey = (DHPublicKey) kp.getPublic();
                KeyFactory kf = KeyFactory.getInstance("DH");
                dhkeySpec = kf.getKeySpec(dhkey, DHPublicKeySpec.class);
            }
            if (!cipher_suite.isAnonymous()) {
                // calculate signed_params
                // init by private key which correspond to
                // server certificate
                ds.init(privKey);
                // use emphemeral key for key exchange
                privKey = kp.getPrivate();
                ds.update(clientHello.getRandom());
                ds.update(serverHello.getRandom());
                //FIXME 1_byte==0x00
                if (cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_RSA_EXPORT) {
                    ServerKeyExchange.updateSignatureRsa(ds, rsakey.getModulus(), rsakey.getPublicExponent());
                } else {
                    ServerKeyExchange.updateSignatureDh(ds, dhkeySpec.getP(), dhkeySpec.getG(), dhkeySpec.getY());
                }
                hash = ds.sign();
            } else {
                // use emphemeral key for key exchange
                privKey = kp.getPrivate();
            }
        } catch (Exception e) {
            fatalAlert(AlertProtocol.INTERNAL_ERROR, "INTERNAL ERROR", e);
        }
        if (cipher_suite.keyExchange == CipherSuite.KEY_EXCHANGE_RSA_EXPORT) {
            serverKeyExchange = new ServerKeyExchange(rsakey.getModulus(), rsakey.getPublicExponent(), null, hash);
        } else {
            serverKeyExchange = new ServerKeyExchange(p, g, dhkeySpec.getY(), hash);
        }
        send(serverKeyExchange);
    }
    // CERTIFICATE_REQUEST
    certRequest: if (parameters.getWantClientAuth() || parameters.getNeedClientAuth()) {
        X509Certificate[] accepted;
        try {
            X509TrustManager tm = parameters.getTrustManager();
            accepted = tm.getAcceptedIssuers();
        } catch (ClassCastException e) {
            // don't send certificateRequest
            break certRequest;
        }
        byte[] requestedClientCertTypes = { CipherSuite.TLS_CT_RSA_SIGN, CipherSuite.TLS_CT_DSS_SIGN };
        certificateRequest = new CertificateRequest(requestedClientCertTypes, accepted);
        send(certificateRequest);
    }
    // SERVER_HELLO_DONE
    serverHelloDone = new ServerHelloDone();
    send(serverHelloDone);
    status = NEED_UNWRAP;
}

Example 9 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project wycheproof by google.

the class DhTest method testDh.

/** Check that key agreement using DH works. */
@SuppressWarnings("InsecureCryptoUsage")
public void testDh() throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH");
    DHParameterSpec dhparams = ike2048();
    keyGen.initialize(dhparams);
    KeyPair keyPairA = keyGen.generateKeyPair();
    KeyPair keyPairB = keyGen.generateKeyPair();
    KeyAgreement kaA = KeyAgreement.getInstance("DH");
    KeyAgreement kaB = KeyAgreement.getInstance("DH");
    kaA.init(keyPairA.getPrivate());
    kaB.init(keyPairB.getPrivate());
    kaA.doPhase(keyPairB.getPublic(), true);
    kaB.doPhase(keyPairA.getPublic(), true);
    byte[] kAB = kaA.generateSecret();
    byte[] kBA = kaB.generateSecret();
    assertEquals(TestUtil.bytesToHex(kAB), TestUtil.bytesToHex(kBA));
}

Example 10 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project wycheproof by google.

the class DhiesTest method ike2048.

// TODO(bleichen): This is the same as DhTest.java
//   We could move this into some TestUtil.
public DHParameterSpec ike2048() {
    final BigInteger p = new BigInteger("FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" + "15728E5A8AACAA68FFFFFFFFFFFFFFFF", 16);
    final BigInteger g = new BigInteger("2");
    return new DHParameterSpec(p, g);
}