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

Example 11 with DHParameterSpec

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

the class DhTest method openJdk1024.

// The default parameters returned for 1024 bit DH keys from OpenJdk as defined in
// openjdk7/releases/v6/trunk/jdk/src/share/classes/sun/security/provider/ParameterCache.java
// I.e., these are the same parameters as used for DSA.
public DHParameterSpec openJdk1024() {
    final BigInteger p = new BigInteger("fd7f53811d75122952df4a9c2eece4e7f611b7523cef4400c31e3f80b6512669" + "455d402251fb593d8d58fabfc5f5ba30f6cb9b556cd7813b801d346ff26660b7" + "6b9950a5a49f9fe8047b1022c24fbba9d7feb7c61bf83b57e7c6a8a6150f04fb" + "83f6d3c51ec3023554135a169132f675f3ae2b61d72aeff22203199dd14801c7", 16);
    final BigInteger unusedQ = new BigInteger("9760508f15230bccb292b982a2eb840bf0581cf5", 16);
    final BigInteger g = new BigInteger("f7e1a085d69b3ddecbbcab5c36b857b97994afbbfa3aea82f9574c0b3d078267" + "5159578ebad4594fe67107108180b449167123e84c281613b7cf09328cc8a6e1" + "3c167a8b547c8d28e0a3ae1e2bb3a675916ea37f0bfa213562f1fb627a01243b" + "cca4f1bea8519089a883dfe15ae59f06928b665e807b552564014c3bfecf492a", 16);
    return new DHParameterSpec(p, g);
}

Example 12 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project XobotOS by xamarin.

the class JCEDHPrivateKey method readObject.

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

Example 13 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project XobotOS by xamarin.

the class JCEDHPublicKey method readObject.

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

Example 14 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project XobotOS by xamarin.

the class JCEDHKeyAgreement method engineInit.

protected void engineInit(Key key, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException {
    if (!(key instanceof DHPrivateKey)) {
        throw new InvalidKeyException("DHKeyAgreement requires DHPrivateKey for initialisation");
    }
    DHPrivateKey privKey = (DHPrivateKey) key;
    if (params != null) {
        if (!(params instanceof DHParameterSpec)) {
            throw new InvalidAlgorithmParameterException("DHKeyAgreement only accepts DHParameterSpec");
        }
        DHParameterSpec p = (DHParameterSpec) params;
        this.p = p.getP();
        this.g = p.getG();
    } else {
        this.p = privKey.getParams().getP();
        this.g = privKey.getParams().getG();
    }
    this.x = this.result = privKey.getX();
}

Example 15 with DHParameterSpec

use of javax.crypto.spec.DHParameterSpec in project XobotOS by xamarin.

the class ClientHandshakeImpl method processServerHelloDone.

/**
     * Processes ServerHelloDone: makes verification of the server messages; sends
     * client messages, computers masterSecret, sends ChangeCipherSpec
     */
void processServerHelloDone() {
    PrivateKey clientKey = null;
    if (serverCert != null) {
        if (session.cipherSuite.isAnonymous()) {
            unexpectedMessage();
            return;
        }
        verifyServerCert();
    } else {
        if (!session.cipherSuite.isAnonymous()) {
            unexpectedMessage();
            return;
        }
    }
    // Client certificate
    if (certificateRequest != null) {
        X509Certificate[] certs = null;
        // obtain certificates from key manager
        String alias = null;
        String[] certTypes = certificateRequest.getTypesAsString();
        X500Principal[] issuers = certificateRequest.certificate_authorities;
        X509KeyManager km = parameters.getKeyManager();
        if (km instanceof X509ExtendedKeyManager) {
            X509ExtendedKeyManager ekm = (X509ExtendedKeyManager) km;
            if (this.socketOwner != null) {
                alias = ekm.chooseClientAlias(certTypes, issuers, this.socketOwner);
            } else {
                alias = ekm.chooseEngineClientAlias(certTypes, issuers, this.engineOwner);
            }
            if (alias != null) {
                certs = ekm.getCertificateChain(alias);
            }
        } else {
            alias = km.chooseClientAlias(certTypes, issuers, this.socketOwner);
            if (alias != null) {
                certs = km.getCertificateChain(alias);
            }
        }
        session.localCertificates = certs;
        clientCert = new CertificateMessage(certs);
        clientKey = km.getPrivateKey(alias);
        send(clientCert);
    }
    // Client key exchange
    if (session.cipherSuite.keyExchange == CipherSuite.KEY_EXCHANGE_RSA || session.cipherSuite.keyExchange == CipherSuite.KEY_EXCHANGE_RSA_EXPORT) {
        // RSA encrypted premaster secret message
        Cipher c;
        try {
            c = Cipher.getInstance("RSA/ECB/PKCS1Padding");
            if (serverKeyExchange != null) {
                c.init(Cipher.ENCRYPT_MODE, serverKeyExchange.getRSAPublicKey());
            } else {
                c.init(Cipher.ENCRYPT_MODE, serverCert.certs[0]);
            }
        } catch (Exception e) {
            fatalAlert(AlertProtocol.INTERNAL_ERROR, "Unexpected exception", e);
            return;
        }
        preMasterSecret = new byte[48];
        parameters.getSecureRandom().nextBytes(preMasterSecret);
        System.arraycopy(clientHello.client_version, 0, preMasterSecret, 0, 2);
        try {
            clientKeyExchange = new ClientKeyExchange(c.doFinal(preMasterSecret), serverHello.server_version[1] == 1);
        } catch (Exception e) {
            fatalAlert(AlertProtocol.INTERNAL_ERROR, "Unexpected exception", e);
            return;
        }
    } else {
        try {
            KeyFactory kf = KeyFactory.getInstance("DH");
            KeyAgreement agreement = KeyAgreement.getInstance("DH");
            KeyPairGenerator kpg = KeyPairGenerator.getInstance("DH");
            PublicKey serverPublic;
            DHParameterSpec spec;
            if (serverKeyExchange != null) {
                serverPublic = kf.generatePublic(new DHPublicKeySpec(serverKeyExchange.par3, serverKeyExchange.par1, serverKeyExchange.par2));
                spec = new DHParameterSpec(serverKeyExchange.par1, serverKeyExchange.par2);
            } else {
                serverPublic = serverCert.certs[0].getPublicKey();
                spec = ((DHPublicKey) serverPublic).getParams();
            }
            kpg.initialize(spec);
            KeyPair kp = kpg.generateKeyPair();
            Key key = kp.getPublic();
            if (clientCert != null && serverCert != null && (session.cipherSuite.keyExchange == CipherSuite.KEY_EXCHANGE_DHE_RSA || session.cipherSuite.keyExchange == CipherSuite.KEY_EXCHANGE_DHE_DSS)) {
                PublicKey client_pk = clientCert.certs[0].getPublicKey();
                PublicKey server_pk = serverCert.certs[0].getPublicKey();
                if (client_pk instanceof DHKey && server_pk instanceof DHKey) {
                    if (((DHKey) client_pk).getParams().getG().equals(((DHKey) server_pk).getParams().getG()) && ((DHKey) client_pk).getParams().getP().equals(((DHKey) server_pk).getParams().getG())) {
                        // client cert message DH public key parameters
                        // matched those specified by the
                        //   server in its certificate,
                        // empty
                        clientKeyExchange = new ClientKeyExchange();
                    }
                }
            } else {
                clientKeyExchange = new ClientKeyExchange(((DHPublicKey) key).getY());
            }
            key = kp.getPrivate();
            agreement.init(key);
            agreement.doPhase(serverPublic, true);
            preMasterSecret = agreement.generateSecret();
        } catch (Exception e) {
            fatalAlert(AlertProtocol.INTERNAL_ERROR, "Unexpected exception", e);
            return;
        }
    }
    if (clientKeyExchange != null) {
        send(clientKeyExchange);
    }
    computerMasterSecret();
    // fixed DH parameters
    if (clientCert != null && !clientKeyExchange.isEmpty()) {
        // Certificate verify
        String authType = clientKey.getAlgorithm();
        DigitalSignature ds = new DigitalSignature(authType);
        ds.init(clientKey);
        if ("RSA".equals(authType)) {
            ds.setMD5(io_stream.getDigestMD5());
            ds.setSHA(io_stream.getDigestSHA());
        } else if ("DSA".equals(authType)) {
            ds.setSHA(io_stream.getDigestSHA());
        // The Signature should be empty in case of anonymous signature algorithm:
        // } else if ("DH".equals(authType)) {
        }
        certificateVerify = new CertificateVerify(ds.sign());
        send(certificateVerify);
    }
    sendChangeCipherSpec();
}