Example usage for org.bouncycastle.crypto.engines IESEngine IESEngine

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.engines IESEngine IESEngine.

Prototype

public IESEngine(BasicAgreement agree, DerivationFunction kdf, Mac mac, BufferedBlockCipher cipher) 

Source Link

Document

Set up for use in conjunction with a block cipher to handle the message.

Usage

From source file:com.completetrsst.crypto.Crypto.java

License:Apache License

private static byte[] _cryptIES(byte[] input, Key recipient, boolean forEncryption)
        throws InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
    IESCipher cipher = new IESCipher(new IESEngine(new ECDHBasicAgreement(),
            new KDF2BytesGenerator(new SHA1Digest()), new HMac(new SHA256Digest()),
            new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()))));

    cipher.engineInit(forEncryption ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, recipient, new SecureRandom());
    return cipher.engineDoFinal(input, 0, input.length);
}

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From source file:dorkbox.util.crypto.CryptoECC.java

License:Apache License

/**
 * Uses SHA512//www  . j  ava 2s.  c  o m
 */
public static IESEngine createEngine(PaddedBufferedBlockCipher aesEngine) {
    return new IESEngine(new ECDHCBasicAgreement(), new KDF2BytesGenerator(new SHA384Digest()),
            new HMac(new SHA512Digest()), aesEngine);
}

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From source file:net.nharyes.secrete.ecies.ECIES.java

License:Open Source License

private static IESEngine getIESEngine() {

    return new IESEngine(new Curve25519Agreement(), new KDF2BytesGenerator(new SHA512Digest()),
            new HMac(new SHA512Digest()),
            new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()), new PKCS7Padding()));
}

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From source file:org.ethereum.crypto.CryptoTest.java

License:Open Source License

@Test // ECIES_AES128_SHA256 + No Ephemeral Key + IV(all zeroes)
public void test14() throws Throwable {

    AESEngine aesEngine = new AESEngine();

    IESEngine iesEngine = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA256Digest()),
            new HMac(new SHA256Digest()), new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    byte[] d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
    byte[] e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };

    IESParameters p = new IESWithCipherParameters(d, e, 64, 128);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, new byte[16]);

    ECKeyPairGenerator eGen = new ECKeyPairGenerator();
    KeyGenerationParameters gParam = new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom());

    eGen.init(gParam);//from  w w w  .ja  v  a  2  s .  c o  m

    AsymmetricCipherKeyPair p1 = eGen.generateKeyPair();
    AsymmetricCipherKeyPair p2 = eGen.generateKeyPair();

    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom());
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    generator.init(keygenParams);

    ECKeyPairGenerator gen = new ECKeyPairGenerator();
    gen.init(new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom()));

    iesEngine.init(true, p1.getPrivate(), p2.getPublic(), parametersWithIV);

    byte[] message = Hex.decode("010101");
    log.info("payload: {}", Hex.toHexString(message));

    byte[] cipher = iesEngine.processBlock(message, 0, message.length);
    log.info("cipher: {}", Hex.toHexString(cipher));

    IESEngine decryptorIES_Engine = new IESEngine(new ECDHBasicAgreement(),
            new KDF2BytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()),
            new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    decryptorIES_Engine.init(false, p2.getPrivate(), p1.getPublic(), parametersWithIV);

    byte[] orig = decryptorIES_Engine.processBlock(cipher, 0, cipher.length);

    log.info("orig: " + Hex.toHexString(orig));
}

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From source file:org.ethereum.crypto.CryptoTest.java

License:Open Source License

@Test // ECIES_AES128_SHA256 + Ephemeral Key + IV(all zeroes)
public void test15() throws Throwable {

    byte[] privKey = Hex.decode("a4627abc2a3c25315bff732cb22bc128f203912dd2a840f31e66efb27a47d2b1");

    ECKey ecKey = ECKey.fromPrivate(privKey);

    ECPrivateKeyParameters ecPrivKey = new ECPrivateKeyParameters(ecKey.getPrivKey(), ECKey.CURVE);
    ECPublicKeyParameters ecPubKey = new ECPublicKeyParameters(ecKey.getPubKeyPoint(), ECKey.CURVE);

    AsymmetricCipherKeyPair myKey = new AsymmetricCipherKeyPair(ecPubKey, ecPrivKey);

    AESEngine aesEngine = new AESEngine();

    IESEngine iesEngine = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA256Digest()),
            new HMac(new SHA256Digest()), new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    byte[] d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
    byte[] e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };

    IESParameters p = new IESWithCipherParameters(d, e, 64, 128);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, new byte[16]);

    ECKeyPairGenerator eGen = new ECKeyPairGenerator();
    KeyGenerationParameters gParam = new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom());

    eGen.init(gParam);// w ww. ja  v  a  2s .  co m

    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom());
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    generator.init(keygenParams);

    EphemeralKeyPairGenerator kGen = new EphemeralKeyPairGenerator(generator, new KeyEncoder() {
        public byte[] getEncoded(AsymmetricKeyParameter keyParameter) {
            return ((ECPublicKeyParameters) keyParameter).getQ().getEncoded();
        }
    });

    ECKeyPairGenerator gen = new ECKeyPairGenerator();
    gen.init(new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom()));

    iesEngine.init(myKey.getPublic(), parametersWithIV, kGen);

    byte[] message = Hex.decode("010101");
    log.info("payload: {}", Hex.toHexString(message));

    byte[] cipher = iesEngine.processBlock(message, 0, message.length);
    log.info("cipher: {}", Hex.toHexString(cipher));

    IESEngine decryptorIES_Engine = new IESEngine(new ECDHBasicAgreement(),
            new KDF2BytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()),
            new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    decryptorIES_Engine.init(myKey.getPrivate(), parametersWithIV, new ECIESPublicKeyParser(ECKey.CURVE));

    byte[] orig = decryptorIES_Engine.processBlock(cipher, 0, cipher.length);

    log.info("orig: " + Hex.toHexString(orig));
}

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