org.bouncycastle.jce.provider.JCEECPublicKey Java Examples

The following examples show how to use org.bouncycastle.jce.provider.JCEECPublicKey. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ECDH.java    From thunder with GNU Affero General Public License v3.0 6 votes vote down vote up 
public static ECDHKeySet getSharedSecret (ECKey keyServer, ECKey keyClient) {
    try {

        ECPrivateKeySpec specPrivate = new ECPrivateKeySpec(keyServer.getPrivKey(), ecParameters);
        ECPublicKeySpec specPublic = new ECPublicKeySpec(new ECPoint(keyClient.getPubKeyPoint().getXCoord().toBigInteger(), keyClient.getPubKeyPoint()
                .getYCoord().toBigInteger()), ecParameters);

        ECPrivateKey privateKey = (ECPrivateKey) kf.generatePrivate(specPrivate);
        ECPublicKey publicKey = (ECPublicKey) kf.generatePublic(specPublic);

        JCEECPrivateKey ecPrivKey = new JCEECPrivateKey(privateKey);
        JCEECPublicKey ecPubKey = new JCEECPublicKey(publicKey);

        KeyAgreement aKeyAgree = KeyAgreement.getInstance("ECDH");
        aKeyAgree.init(ecPrivKey);
        aKeyAgree.doPhase(ecPubKey, true);

        return new ECDHKeySet(aKeyAgree.generateSecret(), keyServer.getPubKey(), keyClient.getPubKey());
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}
Example #2
Source File: ECDH.java    From thundernetwork with GNU Affero General Public License v3.0 5 votes vote down vote up 
public static ECDHKeySet getSharedSecret (ECKey keyServer, ECKey keyClient) {
        try {

            Security.addProvider(new BouncyCastleProvider());
            Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

            AlgorithmParameters parameters = AlgorithmParameters.getInstance("EC", "SunEC");
            parameters.init(new ECGenParameterSpec("secp256k1"));
            ECParameterSpec ecParameters = parameters.getParameterSpec(ECParameterSpec.class);
            ECPrivateKeySpec specPrivate = new ECPrivateKeySpec(keyServer.getPrivKey(), ecParameters);
            ECPublicKeySpec specPublic = new ECPublicKeySpec(new ECPoint(keyClient.getPubKeyPoint().getXCoord().toBigInteger(), keyClient.getPubKeyPoint()
                    .getYCoord().toBigInteger()), ecParameters);

            KeyFactory kf = KeyFactory.getInstance("EC");
            ECPrivateKey privateKey = (ECPrivateKey) kf.generatePrivate(specPrivate);
            ECPublicKey publicKey = (ECPublicKey) kf.generatePublic(specPublic);

            JCEECPrivateKey ecPrivKey = new JCEECPrivateKey(privateKey);
            JCEECPublicKey ecPubKey = new JCEECPublicKey(publicKey);

            new ECKey().getKeyCrypter();

            KeyAgreement aKeyAgree = KeyAgreement.getInstance("ECDH");

            aKeyAgree.init(ecPrivKey);
            aKeyAgree.doPhase(ecPubKey, true);

            return new ECDHKeySet(aKeyAgree.generateSecret(), keyServer.getPubKey(), keyClient.getPubKey());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

//		MessageDigest hash = MessageDigest.getInstance("SHA1", "BC");
//
//		return hash.digest();
    }