Example usage for org.bouncycastle.crypto.macs HMac HMac

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.macs HMac HMac.

Prototype

public HMac(Digest digest) 

Source Link

Document

Base constructor for one of the standard digest algorithms that the byteLength of the algorithm is know for.

Usage

From source file:ECIESTest.java

public TestResult perform() {
    SecureRandom random = new SecureRandom();
    ECCurve.Fp curve = new ECCurve.Fp(
            new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
            new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
            new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b

    ECDomainParameters params = new ECDomainParameters(curve,
            curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
            new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n

    ECKeyPairGenerator pGen = new ECKeyPairGenerator();
    ECKeyGenerationParameters genParam = new ECKeyGenerationParameters(params, random);

    pGen.init(genParam);//  w ww  .ja va  2  s .  c om

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

    //
    // stream test
    //
    IESEngine i1 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()),
            new HMac(new SHA1Digest()));
    IESEngine i2 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()),
            new HMac(new SHA1Digest()));
    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 IESParameters(d, e, 64);

    i1.init(true, p1.getPrivate(), p2.getPublic(), p);
    i2.init(false, p2.getPrivate(), p1.getPublic(), p);

    byte[] message = Hex.decode("1234567890abcdef");

    try {
        byte[] out1 = i1.processBlock(message, 0, message.length);

        byte[] out2 = i2.processBlock(out1, 0, out1.length);

        if (!sameAs(out2, message)) {
            return new SimpleTestResult(false, this.getName() + ": stream cipher test failed");
        }

    } catch (Exception ex) {
        return new SimpleTestResult(false, this.getName() + ": stream cipher test exception " + ex.toString());
    }

    //
    // twofish with IV0 test
    //
    BufferedBlockCipher c1 = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine()));
    BufferedBlockCipher c2 = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine()));
    i1 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()),
            new HMac(new SHA1Digest()), c1);
    i2 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()),
            new HMac(new SHA1Digest()), c2);
    d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
    e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };
    p = new IESWithCipherParameters(d, e, 64, 128);

    i1.init(true, p1.getPrivate(), p2.getPublic(), p);
    i2.init(false, p2.getPrivate(), p1.getPublic(), p);

    message = Hex.decode("1234567890abcdef");

    try {
        byte[] out1 = i1.processBlock(message, 0, message.length);

        byte[] out2 = i2.processBlock(out1, 0, out1.length);

        if (!sameAs(out2, message)) {
            return new SimpleTestResult(false, this.getName() + ": twofish cipher test failed");
        }
    } catch (Exception ex) {
        return new SimpleTestResult(false, this.getName() + ": twofish cipher test exception " + ex.toString());
    }

    return new SimpleTestResult(true, this.getName() + ": Okay");
}

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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:com.distrimind.util.crypto.BCMac.java

License:Open Source License

public void init(org.bouncycastle.crypto.SymmetricSecretKey _key) throws NoSuchAlgorithmException {
    Digest d;//from   w w  w.j av a 2s.  c  o m
    if (type.getCodeProviderForSignature() == CodeProvider.BC) {
        switch (type.getMessageDigestType()) {
        case BC_FIPS_SHA3_256:
            d = new SHA3Digest(256);
            break;
        case BC_FIPS_SHA3_384:
            d = new SHA3Digest(384);
            break;
        case BC_FIPS_SHA3_512:
            d = new SHA3Digest(512);
            break;
        case BC_BLAKE2B_160:
        case BC_BLAKE2B_256:
        case BC_BLAKE2B_384:
        case BC_BLAKE2B_512:
            d = new Blake2bDigest(type.getMessageDigestType().getDigestLengthInBits());
            break;
        default:
            throw new NoSuchAlgorithmException(type.toString());
        }
    } else {
        throw new NoSuchAlgorithmException(type.toString());
    }
    mac = new HMac(d);
    mac.init(new KeyParameter((secretKey = _key).getKeyBytes()));
    reset();

}

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From source file:com.DSC.crypto.Cipher.java

License:Open Source License

/**
 * //w  w w.j a  v  a 2  s  . co m
 * @param priKey
 * @param pubKey
 * @param passphrase
 * @param data
 * @return
 * @throws InvalidCipherTextException
 */
public static byte[] encryptKey(CipherParameters priKey, CipherParameters pubKey, String passphrase,
        byte[] data) throws InvalidCipherTextException {
    /* Initialize IESEngine in stream mode */
    IESEngine engine = new IESEngine(new ECDHCBasicAgreement(), new KDF2BytesGenerator(new SHA256Digest()),
            new HMac(new SHA256Digest()));

    /* Set the IESEngine cipher parameters as the passphrase and passphrase reversed */
    IESParameters param = new IESParameters(passphrase.getBytes(),
            new StringBuilder(passphrase).reverse().toString().getBytes(), engine.getMac().getMacSize() * 8);

    /* Initialize the engine and encrypt the key */
    engine.init(true, priKey, pubKey, param);
    return engine.processBlock(data, 0, data.length);
}

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From source file:com.DSC.crypto.Cipher.java

License:Open Source License

/**
 * //from   w w w.  j  av  a2  s .c o  m
 * @param priKey
 * @param pubKey
 * @param passphrase
 * @param data
 * @return
 * @throws InvalidCipherTextException
 */
public static byte[] decryptKey(CipherParameters priKey, CipherParameters pubKey, String passphrase,
        byte[] data) throws InvalidCipherTextException {
    /* IESEngine in stream mode */
    IESEngine engine = new IESEngine(new ECDHCBasicAgreement(), new KDF2BytesGenerator(new SHA256Digest()),
            new HMac(new SHA256Digest()));

    /* Set the IESEngine cipher parameters as the passphrase and passphrase reversed */
    IESParameters param = new IESParameters(passphrase.getBytes(),
            new StringBuilder(passphrase).reverse().toString().getBytes(), engine.getMac().getMacSize() * 8);

    /* Initialize the engine and decrypt the key */
    engine.init(false, priKey, pubKey, param);
    return engine.processBlock(data, 0, data.length);
}

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From source file:com.DSC.crypto.Cipher.java

License:Open Source License

/**
 * /*from  w w w . java 2s. c  o m*/
 * @param passphrase
 * @param data
 * @return
 */
public static BigInteger[] generateHMAC(String passphrase, byte[] data) {
    HMac hmac = new HMac(new MD5Digest());
    byte[] buf = new byte[hmac.getMacSize()];
    BigInteger[] hmacBigInt = new BigInteger[1];

    /* Initializes and generate HMAC for message */
    hmac.init(new KeyParameter(passphrase.getBytes()));
    hmac.update(data, 0, data.length);
    hmac.doFinal(buf, 0);

    /* Convert the HMAC to a big integer representation */
    hmacBigInt[0] = new BigInteger(buf);
    return hmacBigInt;
}

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From source file:com.DSC.crypto.Cipher.java

License:Open Source License

/**
 * //from w  w w . j a v a2 s  .c  o m
 * @param passphrase
 * @param HMAC
 * @param data
 * @return
 * @throws InvalidCipherTextException
 */
public static boolean verifyHMAC(String passphrase, BigInteger[] HMAC, byte[] data)
        throws InvalidCipherTextException {
    HMac hmac = new HMac(new MD5Digest());
    byte[] expHMAC = new byte[hmac.getMacSize()];
    byte[] recHMAC = new byte[hmac.getMacSize()];

    /* Initializes and generate the expected HMAC for message */
    hmac.init(new KeyParameter(passphrase.getBytes()));
    hmac.update(data, 0, data.length);
    hmac.doFinal(expHMAC, 0);

    /* Convert the received HMAC to a byte representation */
    recHMAC = HMAC[0].toByteArray();

    /* Compare the HMAC received to the expected HMAC */
    if (Arrays.equals(expHMAC, recHMAC)) {
        return true;
    } else {
        throw new InvalidCipherTextException("Message HMAC failed!");
    }
}

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From source file:com.entertailion.android.shapeways.api.Request.java

License:Apache License

/**
 * Generate HMAC-SHA1 for message// ww w .  j a v  a  2 s.c  o m
 * 
 * @param key
 * @param message
 * @return
 * @throws Exception
 */
private static String generateHmac(String key, String message) throws Exception {
    Log.d(LOG_TAG, "generateHmac: " + key + "=" + message);
    byte[] keyBytes = key.getBytes(ShapewaysClient.ENCODING);
    byte[] data = message.getBytes(ShapewaysClient.ENCODING);

    HMac macProvider = new HMac(new SHA1Digest());
    macProvider.init(new KeyParameter(keyBytes));
    macProvider.reset();

    macProvider.update(data, 0, data.length);
    byte[] output = new byte[macProvider.getMacSize()];
    macProvider.doFinal(output, 0);

    byte[] hmac = Base64.encode(output);
    return new String(hmac).replaceAll("\r\n", "");
}

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From source file:com.github.horrorho.inflatabledonkey.crypto.NISTKDF.java

License:Open Source License

public static byte[] ctrHMac(byte[] keyDerivationKey, byte[] label, Supplier<Digest> digestSupplier,
        int keyLengthBytes) {

    logger.trace("<< ctrHMac() - keyDerivationKey: 0x{} label: {} digestSupplier: {} length: {}",
            Hex.toHexString(keyDerivationKey), Hex.toHexString(label), digestSupplier, keyLengthBytes);

    byte[] derivedKey = new byte[keyLengthBytes];

    // fixedInputData = label || 0x00 || dkLen in bits as 4 bytes big endian
    ByteBuffer buffer = ByteBuffer.allocate(label.length + 5);
    buffer.put(label);//from ww  w.  j  av a  2  s.  com
    buffer.put((byte) 0);
    buffer.putInt(keyLengthBytes * 8);
    byte[] fixedInputData = buffer.array();
    logger.debug("-- ctrHMac() - fixed input data: 0x{}", Hex.toHexString(fixedInputData));

    HMac hMac = new HMac(digestSupplier.get());
    KDFCounterBytesGenerator generator = new KDFCounterBytesGenerator(hMac);
    generator.init(new KDFCounterParameters(keyDerivationKey, fixedInputData, R));
    generator.generateBytes(derivedKey, 0, derivedKey.length);

    logger.trace(">> ctrHMac() - derivedKey: 0x{}", Hex.toHexString(derivedKey));
    return derivedKey;
}

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From source file:com.github.jinahya.rfc5849.OAuthSignatureHmacSha1Bc.java

License:Apache License

@Override
byte[] get(final byte[] keyBytes, final byte[] baseBytes) throws Exception {
    final Mac mac = new HMac(new SHA1Digest());
    mac.init(new KeyParameter(keyBytes));
    mac.update(baseBytes, 0, baseBytes.length);
    final byte[] output = new byte[mac.getMacSize()];
    mac.doFinal(output, 0);// w w w . j  av a 2  s  .co  m
    return output;
}

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