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

List of usage examples for org.bouncycastle.crypto.engines DESEngine DESEngine

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Introduction

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

Prototype

public DESEngine()

Source Link

Document

standard constructor.

Usage

From source file:com.licel.jcardsim.crypto.SymmetricKeyImpl.java

License:Apache License

/**
 * Return the BouncyCastle <code>BlockCipher</code> for using with this key
 * @return <code>BlockCipher</code> for this key, or null for HMACKey
 * @throws CryptoException if key not initialized
 * @see BlockCipher/*from   www  . j a  v a  2s.c o m*/
 */
public BlockCipher getCipher() throws CryptoException {
    if (!key.isInitialized()) {
        CryptoException.throwIt(CryptoException.UNINITIALIZED_KEY);
    }
    BlockCipher cipher = null;
    switch (type) {
    case KeyBuilder.TYPE_DES:
    case KeyBuilder.TYPE_DES_TRANSIENT_DESELECT:
    case KeyBuilder.TYPE_DES_TRANSIENT_RESET:
        if (size == KeyBuilder.LENGTH_DES) {
            cipher = new DESEngine();
        }
        if (size == KeyBuilder.LENGTH_DES3_2KEY || size == KeyBuilder.LENGTH_DES3_3KEY) {
            cipher = new DESedeEngine();
        }
        break;
    case KeyBuilder.TYPE_AES:
    case KeyBuilder.TYPE_AES_TRANSIENT_DESELECT:
    case KeyBuilder.TYPE_AES_TRANSIENT_RESET:
        cipher = new AESEngine();
        break;
    }
    return cipher;
}

From source file:com.licel.jcardsim.crypto.SymmetricSignatureImpl.java

License:Apache License

public void init(Key theKey, byte theMode, byte[] bArray, short bOff, short bLen) throws CryptoException {
    if (theKey == null) {
        CryptoException.throwIt(CryptoException.UNINITIALIZED_KEY);
    }/* w w  w . j  a v a  2 s. c  om*/
    if (!theKey.isInitialized()) {
        CryptoException.throwIt(CryptoException.UNINITIALIZED_KEY);
    }
    if (!(theKey instanceof SymmetricKeyImpl)) {
        CryptoException.throwIt(CryptoException.ILLEGAL_VALUE);
    }
    CipherParameters cipherParams = null;
    BlockCipher cipher = ((SymmetricKeyImpl) theKey).getCipher();
    if (bArray == null) {
        cipherParams = ((SymmetricKeyImpl) theKey).getParameters();
    } else {
        if (bLen != cipher.getBlockSize()) {
            CryptoException.throwIt(CryptoException.ILLEGAL_VALUE);
        }
        cipherParams = new ParametersWithIV(((SymmetricKeyImpl) theKey).getParameters(), bArray, bOff, bLen);
    }
    switch (algorithm) {
    case ALG_DES_MAC4_NOPAD:
        engine = new CBCBlockCipherMac(cipher, 32, null);
        break;
    case ALG_DES_MAC8_NOPAD:
        engine = new CBCBlockCipherMac(cipher, 64, null);
        break;
    case ALG_DES_MAC4_ISO9797_M1:
        engine = new CBCBlockCipherMac(cipher, 32, new ZeroBytePadding());
        break;
    case ALG_DES_MAC8_ISO9797_M1:
        engine = new CBCBlockCipherMac(cipher, 64, new ZeroBytePadding());
        break;
    case ALG_DES_MAC4_ISO9797_M2:
        engine = new CBCBlockCipherMac(cipher, 32, new ISO7816d4Padding());
        break;
    case ALG_DES_MAC8_ISO9797_M2:
        engine = new CBCBlockCipherMac(cipher, 64, new ISO7816d4Padding());
        break;
    case ALG_DES_MAC8_ISO9797_1_M2_ALG3:
        engine = new ISO9797Alg3Mac(new DESEngine(), 64, new ISO7816d4Padding());
        break;
    case ALG_DES_MAC4_PKCS5:
        engine = new CBCBlockCipherMac(cipher, 32, new PKCS7Padding());
        break;
    case ALG_DES_MAC8_PKCS5:
        engine = new CBCBlockCipherMac(cipher, 64, new PKCS7Padding());
        break;
    case ALG_AES_MAC_128_NOPAD:
        engine = new CBCBlockCipherMac(cipher, 128, null);
        break;
    case ALG_HMAC_SHA1:
        engine = new HMac(new SHA1Digest());
        break;
    case ALG_HMAC_SHA_256:
        engine = new HMac(new SHA256Digest());
        break;
    case ALG_HMAC_SHA_384:
        engine = new HMac(new SHA384Digest());
        break;
    case ALG_HMAC_SHA_512:
        engine = new HMac(new SHA512Digest());
        break;
    case ALG_HMAC_MD5:
        engine = new HMac(new MD5Digest());
        break;
    case ALG_HMAC_RIPEMD160:
        engine = new HMac(new RIPEMD160Digest());
        break;
    default:
        CryptoException.throwIt(CryptoException.NO_SUCH_ALGORITHM);
        break;
    }
    engine.init(cipherParams);
    isInitialized = true;
}

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

License:Apache License

private static String decrypt(byte[] key, String cipherText) throws CryptoException {
    try {//w  w w  .ja  va 2  s. 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);
    }
}

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

License:Apache License

private static String encrypt(byte[] key, String plainText) throws CryptoException {
    try {/*  w  ww . j  a v  a  2  s.  co  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);
    }
}

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);// w ww.  j a va  2s . c o  m
    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();
}

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

License:Apache License

String decipher(byte[] key, String cipherText) throws InvalidCipherTextException {
    PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new DESEngine()));
    cipher.init(false, new KeyParameter(Hex.decode(key)));
    byte[] cipherTextBytes = Base64.decodeBase64(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;
        }//from  w w  w .  ja  v a  2s  .  c  om
    }
    return new String(plainTextBytes, 0, paddingStarts + 1);
}

From source file:de.tsenger.animamea.crypto.AmDESCrypto.java

License:Open Source License

@Override
public byte[] getMAC(byte[] data) {

    byte[] n = new byte[8 + data.length];
    System.arraycopy(sscBytes, 0, n, 0, 8);
    System.arraycopy(data, 0, n, 8, data.length);

    BlockCipher cipher = new DESEngine();
    Mac mac = new ISO9797Alg3Mac(cipher, 64, new ISO7816d4Padding());

    ParametersWithIV parameterIV = new ParametersWithIV(keyP, IV);

    mac.init(parameterIV);//from   w w w. ja va  2s . c  om
    mac.update(n, 0, n.length);

    byte[] out = new byte[8];

    mac.doFinal(out, 0);

    return out;
}

From source file:de.tsenger.animamea.crypto.AmDESCrypto.java

License:Open Source License

@Override
public byte[] getMAC(byte[] key, byte[] data) {
    BlockCipher cipher = new DESEngine();
    Mac mac = new ISO9797Alg3Mac(cipher, 64, new ISO7816d4Padding());

    KeyParameter keyP = new KeyParameter(key);
    mac.init(keyP);/*  www.j av a2s.c o  m*/
    mac.update(data, 0, data.length);

    byte[] out = new byte[8];

    mac.doFinal(out, 0);

    return out;
}

From source file:org.alfresco.jlan.client.J2MEPasswordEncryptor.java

License:Open Source License

/**
 * P16 encryption// www  .  j a v a2  s  .c  o  m
 *
 * @param pwd java.lang.String
 * @param s8 byte[]
 * @return byte[]
* @exception NoSuchAlgorithmException   If a required encryption algorithm is not available
 */
public final byte[] P16(String pwd, byte[] s8) throws NoSuchAlgorithmException {

    //   Make a 14 byte string using the password string. Truncate the
    //   password or pad with nulls to 14 characters.

    StringBuffer p14str = new StringBuffer();
    p14str.append(pwd.toUpperCase());
    if (p14str.length() > 14)
        p14str.setLength(14);

    while (p14str.length() < 14)
        p14str.append((char) 0x00);

    //   Convert the P14 string to an array of bytes. Allocate the return 16 byte array.

    byte[] p14 = p14str.toString().getBytes();
    byte[] p16 = new byte[16];

    try {

        //   DES encrypt the password bytes using the challenge key

        DESEngine des = new DESEngine();

        //   Set the encryption seed using the first 7 bytes of the password string.
        //   Generate the first 8 bytes of the return value.

        byte[] key = generateKey(p14, 0);

        KeyParameter chKey = new KeyParameter(key);
        des.init(true, chKey);
        des.processBlock(s8, 0, p16, 0);

        //   Encrypt the second block

        key = generateKey(p14, 7);

        chKey = new KeyParameter(key);
        des.init(true, chKey);
        des.processBlock(s8, 0, p16, 8);
    } catch (Exception ex) {
        p16 = null;
    }

    //   Return the 16 byte encrypted value

    return p16;
}

From source file:org.alfresco.jlan.client.J2MEPasswordEncryptor.java

License:Open Source License

/**
 * P24 DES encryption/*from w  ww .  java2 s  . c  om*/
 *
 * @param p21      Plain password or hashed password bytes
 * @param ch      Challenge bytes
 * @return         Encrypted password
 * @exception NoSuchAlgorithmException   If a required encryption algorithm is not available
 */
protected byte[] P24(byte[] p21, byte[] ch) throws NoSuchAlgorithmException {

    byte[] enc = null;

    try {

        //   DES encrypt the password bytes using the challenge key

        DESEngine des = new DESEngine();

        //   Allocate the output bytes

        enc = new byte[24];

        //   Encrypt the first block

        byte[] key = generateKey(p21, 0);

        KeyParameter chKey = new KeyParameter(key);
        des.init(true, chKey);
        des.processBlock(ch, 0, enc, 0);

        //   Encrypt the second block

        key = generateKey(p21, 7);

        chKey = new KeyParameter(key);
        des.init(true, chKey);
        des.processBlock(ch, 0, enc, 8);

        //   Encrypt the last block

        key = generateKey(p21, 14);

        chKey = new KeyParameter(key);
        des.init(true, chKey);
        des.processBlock(ch, 0, enc, 16);
    } catch (Exception ex) {
        ex.printStackTrace();
        enc = null;
    }

    //   Return the encrypted password, or null if an error occurred

    return enc;
}