Example usage for org.bouncycastle.crypto.paddings PaddedBufferedBlockCipher PaddedBufferedBlockCipher

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.paddings PaddedBufferedBlockCipher PaddedBufferedBlockCipher.

Prototype

public PaddedBufferedBlockCipher(BlockCipher cipher) 

Source Link

Document

Create a buffered block cipher PKCS7 padding

Usage

From source file:com.javacreed.api.secureproperties.bouncycastle.TwoFishCipherFactory.java

License:Apache License

@Override
protected OutputStream wrapInToCipheredOutputStream(final OutputStream out) throws Exception {
    final BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine()));
    cipher.init(true, new KeyParameter(key.getBytes("UTF-8")));
    final CipherOutputStream stream = new CipherOutputStream(out, cipher);
    return stream;
}

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From source file:com.oneops.cms.crypto.CmsCryptoDES.java

License:Apache License

/**
 * Encrypt.//from  ww  w. j a  v  a  2 s. c  o m
 *
 * @param instr the instr
 * @return the string
 * @throws java.security.GeneralSecurityException the general security exception
 */
@Override
public String encrypt(String instr) throws GeneralSecurityException {
    long t1 = System.currentTimeMillis();
    byte[] in = instr.getBytes();
    PaddedBufferedBlockCipher encryptor = new PaddedBufferedBlockCipher(new CBCBlockCipher(new DESedeEngine()));
    encryptor.init(true, keyParameter);
    byte[] cipherText = new byte[encryptor.getOutputSize(in.length)];
    int outputLen = encryptor.processBytes(in, 0, in.length, cipherText, 0);
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    try {
        encryptor.doFinal(cipherText, outputLen);
        Hex.encode(cipherText, os);
    } catch (Exception e) {
        e.printStackTrace();
        throw new GeneralSecurityException(e);
    }
    long t2 = System.currentTimeMillis();
    logger.debug("Time taken to encrypt(millis) :" + (t2 - t1));
    return ENC_PREFIX + os.toString();
}

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From source file:com.oneops.cms.crypto.CmsCryptoDES.java

License:Apache License

private String decryptStr(String instr) throws GeneralSecurityException {
    if (StringUtils.isEmpty(instr)) {
        return instr;
    }//  w  w w .  j  a  v a 2  s . co  m
    long t1 = System.currentTimeMillis();
    PaddedBufferedBlockCipher decryptor = new PaddedBufferedBlockCipher(new CBCBlockCipher(new DESedeEngine()));
    decryptor.init(false, keyParameter);
    byte[] in = null;
    byte[] cipherText = null;

    try {
        in = Hex.decode(instr);
        cipherText = new byte[decryptor.getOutputSize(in.length)];

        int outputLen = decryptor.processBytes(in, 0, in.length, cipherText, 0);
        decryptor.doFinal(cipherText, outputLen);
    } catch (Exception e) {
        throw new GeneralSecurityException(e);
    }
    long t2 = System.currentTimeMillis();
    logger.debug("Time taken to decrypt(millis) : " + (t2 - t1));
    return (new String(cipherText)).replaceAll("\\u0000+$", "");
}

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From source file:com.smedia.sqzserver.common.util.SerialNumber.java

public byte[] decrypt(String cookieValue, byte[] keyBytes)
        throws InvalidKeyException, UnsupportedEncodingException {
    byte[] encryptedData;
    byte[] decryptedData;
    TwofishEngine t = new TwofishEngine();

    // ///////////////////

    BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine()));

    cipher.init(false, new KeyParameter(keyBytes));

    // create the key
    // byte[] keyBytes = key.getBytes();
    // Object keyObject = twofish.makeKey(keyBytes, 16);
    // make the length of the string a multiple of
    // the block size
    while (cookieValue.length() < (32 * 8 / 5)) {
        cookieValue += "A";
    }/*ww w.  j ava 2  s . c  o m*/
    // initialize byte arrays that will hold encrypted/decrypted
    // text

    encryptedData = sorensonBase32Decode(cookieValue);
    decryptedData = new byte[cookieValue.length() * 2];

    /*
     * int oLen = cipher.processBytes(encryptedData, 0,
     * encryptedData.length, decryptedData, 0); try {
     * cipher.doFinal(decryptedData, oLen); } catch (CryptoException ce) {
     * ce.printStackTrace(); }
     */
    // String test = new String(rv).trim();

    // ///

    encryptedData = sorensonBase32Decode(cookieValue);
    decryptedData = new byte[cookieValue.length() * 2];
    // Iterate over the byte arrays by 16-byte blocks and decrypt.
    for (int i = 0; i < Array.getLength(encryptedData); i += 16) {
        // twofish.decrypt(encryptedData, i, decryptedData, i, keyObject,
        // 16);

        cipher.processBytes(encryptedData, i, 16, decryptedData, 0);

    }

    return decryptedData;
}

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From source file:com.sos.CredentialStore.KeePass.pl.sind.keepass.crypto.BcAESCipher.java

License:Apache License

@Override
public byte[] decrypt(final byte[] key, final byte[] data, final byte[] iv) throws CipherException {
    BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()));

    if (iv != null) {
        cipher.init(false, new ParametersWithIV(new KeyParameter(key), iv));
    } else {//from  www . java2 s .  c o  m
        cipher.init(false, new KeyParameter(key));
    }

    byte[] decoded = new byte[cipher.getOutputSize(data.length)];

    int out = cipher.processBytes(data, 0, data.length, decoded, 0);
    try {
        out += cipher.doFinal(decoded, out);

        if (out < decoded.length) {
            decoded = Arrays.copyOf(decoded, out);
        }

    } catch (DataLengthException e) {
        // we are padding so shouldn happen
        throw new CipherException("Invalid data lenght", e);
    } catch (IllegalStateException e) {
        throw new CipherException("Decrypting error", e);
    } catch (InvalidCipherTextException e) {
        throw new CipherException("Unable to decrypt data", e);
    }

    return decoded;

}

---

From source file:com.sos.CredentialStore.KeePass.pl.sind.keepass.crypto.BcAESCipher.java

License:Apache License

@Override
public byte[] encrypt(final byte[] key, final byte[] data, final byte[] iv, final int rounds,
        final boolean padding) throws CipherException {
    BufferedBlockCipher cipher = null;//from   w w  w .j  a v  a 2 s. c om

    if (padding) {
        cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()));
    } else {
        cipher = new BufferedBlockCipher(new AESEngine());
    }

    if (iv != null) {
        cipher.init(true, new ParametersWithIV(new KeyParameter(key), iv));
    } else {
        cipher.init(true, new KeyParameter(key));
    }

    byte[] encoded = null;
    if (padding) {
        encoded = new byte[cipher.getOutputSize(data.length)];
    } else {
        encoded = new byte[data.length];
    }

    int out = cipher.processBytes(data, 0, data.length, encoded, 0);
    if (rounds > 1) {
        for (int i = 1; i < rounds; i++) {
            out = cipher.processBytes(encoded, 0, encoded.length, encoded, 0);
        }
    }

    try {
        if (padding && out < encoded.length) {
            cipher.doFinal(encoded, out);
        }
    } catch (DataLengthException e) {
        // we are padding so shouldn happen
        throw new CipherException("Invalid data lenght", e);
    } catch (IllegalStateException e) {
        throw new CipherException("Decrypting error", e);
    } catch (InvalidCipherTextException e) {
        throw new CipherException("Unable to decrypt data", e);
    }

    return encoded;
}

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From source file:com.thecorpora.qbo.androidapk.AESCipher.java

License:Open Source License

public String encrypt(byte configData[], String key) throws Exception {
    byte[] encryptedConfigData = null;
    AESEngine blockCipher = new AESEngine();
    blockCipher.reset();/*from   w  ww  .  j a v a  2s  .  co  m*/
    CBCBlockCipher cbcCipher = new CBCBlockCipher(blockCipher);
    BufferedBlockCipher bbc = new PaddedBufferedBlockCipher(cbcCipher);

    byte[] salt = new byte[8];
    SecureRandom secure = new SecureRandom();
    secure.nextBytes(salt);

    //intialising in the encryption mode with Key and IV
    bbc.init(true, getKeyParamWithIv(key, salt));
    byte[] encryptedData = new byte[bbc.getOutputSize(configData.length)];

    //process array of bytes
    int noOfBytes = bbc.processBytes(configData, 0, configData.length, encryptedData, 0);

    //process the last block in the buffer
    bbc.doFinal(encryptedData, noOfBytes);

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    //writing encrypted data along with the salt in the format readable by open ssl api
    bos.write("Salted__".getBytes());
    bos.write(salt);
    bos.write(encryptedData);
    encryptedConfigData = bos.toByteArray();
    bos.close();

    //      return encryptedConfigData;
    return Base64.encodeToString(encryptedConfigData, Base64.DEFAULT);

}

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From source file:com.thoughtworks.go.security.DESEncrypter.java

License:Apache License

private static String decrypt(byte[] key, String cipherText) throws CryptoException {
    try {//from   ww  w  . j  a va 2s. co m
        PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new DESEngine()));
        cipher.init(false, new KeyParameter(key));
        byte[] cipherTextBytes = DECODER.decode(cipherText);

        byte[] plainTextBytes = new byte[cipher.getOutputSize(cipherTextBytes.length)];
        int outputLength = cipher.processBytes(cipherTextBytes, 0, cipherTextBytes.length, plainTextBytes, 0);
        cipher.doFinal(plainTextBytes, outputLength);
        int paddingStarts = plainTextBytes.length - 1;
        for (; paddingStarts >= 0; paddingStarts--) {
            if (plainTextBytes[paddingStarts] != 0) {
                break;
            }
        }
        return new String(plainTextBytes, 0, paddingStarts + 1);
    } catch (Exception e) {
        throw new CryptoException(e);
    }
}

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From source file:com.thoughtworks.go.security.DESEncrypter.java

License:Apache License

private static String encrypt(byte[] key, String plainText) throws CryptoException {
    try {/*from  w ww  .  j a  va2s . c  o m*/
        PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new DESEngine()));
        KeyParameter keyParameter = new KeyParameter(key);
        cipher.init(true, keyParameter);
        byte[] plainTextBytes = plainText.getBytes();
        byte[] cipherTextBytes = new byte[cipher.getOutputSize(plainTextBytes.length)];
        int outputLength = cipher.processBytes(plainTextBytes, 0, plainTextBytes.length, cipherTextBytes, 0);
        cipher.doFinal(cipherTextBytes, outputLength);
        return ENCODER.encodeToString(cipherTextBytes).trim();
    } catch (Exception e) {
        throw new CryptoException(e);
    }
}

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From source file:com.thoughtworks.go.security.GoCipher.java

License:Apache License

String cipher(byte[] key, String plainText) throws InvalidCipherTextException {
    PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new DESEngine()));
    KeyParameter keyParameter = new KeyParameter(Hex.decode(key));
    cipher.init(true, keyParameter);/*from   w w  w  .  j a  v  a 2  s.c  om*/
    byte[] plainTextBytes = plainText.getBytes();
    byte[] cipherTextBytes = new byte[cipher.getOutputSize(plainTextBytes.length)];
    int outputLength = cipher.processBytes(plainTextBytes, 0, plainTextBytes.length, cipherTextBytes, 0);
    cipher.doFinal(cipherTextBytes, outputLength);
    return Base64.encodeBase64String(cipherTextBytes).trim();
}

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