Example usage for org.bouncycastle.crypto.modes SICBlockCipher SICBlockCipher

List of usage examples for org.bouncycastle.crypto.modes SICBlockCipher SICBlockCipher

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Introduction

In this page you can find the example usage for org.bouncycastle.crypto.modes SICBlockCipher SICBlockCipher.

Prototype

public SICBlockCipher(BlockCipher c)

Source Link

Document

Basic constructor.

Usage

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 ww.ja va 2s  .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));
}

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  w w  .j ava2s.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));
}

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

License:Open Source License

public static byte[] decrypt(ECPoint ephem, BigInteger prv, byte[] iv, byte[] cipher, byte[] macData)
        throws InvalidCipherTextException {
    AESEngine aesEngine = new AESEngine();

    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(),
            new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(),
            new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    byte[] d = new byte[] {};
    byte[] e = new byte[] {};

    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, iv);

    iesEngine.init(false, new ECPrivateKeyParameters(prv, CURVE), new ECPublicKeyParameters(ephem, CURVE),
            parametersWithIV);/*from w  w  w.  j a  v a2 s .  co  m*/

    return iesEngine.processBlock(cipher, 0, cipher.length, macData);
}

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

License:Open Source License

private static EthereumIESEngine makeIESEngine(boolean isEncrypt, ECPoint pub, BigInteger prv, byte[] iv) {
    AESEngine aesEngine = new AESEngine();

    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(),
            new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(),
            new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    byte[] d = new byte[] {};
    byte[] e = new byte[] {};

    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, iv);

    iesEngine.init(isEncrypt, new ECPrivateKeyParameters(prv, CURVE), new ECPublicKeyParameters(pub, CURVE),
            parametersWithIV);/*  w w  w  .j  a  v  a2  s  . c om*/
    return iesEngine;
}

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

License:Open Source License

private static EthereumIESEngine makeIESEngine(boolean isEncrypt, ECPoint pub, BigInteger prv, byte[] IV) {
    AESEngine aesEngine = new AESEngine();

    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(),
            new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(),
            new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    byte[] d = new byte[] {};
    byte[] e = new byte[] {};

    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, IV);

    iesEngine.init(isEncrypt, new ECPrivateKeyParameters(prv, curve), new ECPublicKeyParameters(pub, curve),
            parametersWithIV);/*from   w w w  .  j a v a2  s .  c  o  m*/
    return iesEngine;
}

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

License:Open Source License

/**
 * Decrypt cipher by AES in SIC(also know as CTR) mode
 *
 * @param cipher -proper cipher// w w  w. j  a v  a  2s . c  o m
 * @return decrypted cipher, equal length to the cipher.
 */
public byte[] decryptAES(byte[] cipher) {

    if (priv == null) {
        throw new MissingPrivateKeyException();
    }

    AESEngine engine = new AESEngine();
    SICBlockCipher ctrEngine = new SICBlockCipher(engine);

    KeyParameter key = new KeyParameter(BigIntegers.asUnsignedByteArray(priv));
    ParametersWithIV params = new ParametersWithIV(key, new byte[16]);

    ctrEngine.init(false, params);

    int i = 0;
    byte[] out = new byte[cipher.length];
    while (i < cipher.length) {
        ctrEngine.processBlock(cipher, i, out, i);
        i += engine.getBlockSize();
        if (cipher.length - i < engine.getBlockSize()) {
            break;
        }
    }

    // process left bytes
    if (cipher.length - i > 0) {
        byte[] tmpBlock = new byte[16];
        System.arraycopy(cipher, i, tmpBlock, 0, cipher.length - i);
        ctrEngine.processBlock(tmpBlock, 0, tmpBlock, 0);
        System.arraycopy(tmpBlock, 0, out, i, cipher.length - i);
    }

    return out;
}

From source file:org.ethereum.net.rlpx.FrameCodec.java

License:Open Source License

public FrameCodec(EncryptionHandshake.Secrets secrets) {
    this.mac = secrets.mac;
    AESEngine encCipher = new AESEngine();
    enc = new SICBlockCipher(encCipher);
    enc.init(true, new ParametersWithIV(new KeyParameter(secrets.aes), new byte[encCipher.getBlockSize()]));
    AESEngine decCipher = new AESEngine();
    dec = new SICBlockCipher(decCipher);
    dec.init(false, new ParametersWithIV(new KeyParameter(secrets.aes), new byte[decCipher.getBlockSize()]));
    egressMac = secrets.egressMac;/*w w w  . j a  va  2s.co  m*/
    ingressMac = secrets.ingressMac;
}

From source file:us.exultant.ahs.crypto.bc.AesCtrPkcs7Sha1.java

License:Open Source License

public AesCtrPkcs7Sha1() {
    // build the system
    $cipher = new PaddedBufferedBlockCipher(new SICBlockCipher(new AESEngineMod()), // i've decided to frown upon CBC because of the bug i noticed with IVs in that code.
            new PKCS7Padding());
    $hmac = new HMac(new SHA1Digest());
}