Examples with DESKeySpec javax.crypto.spec.DESKeySpec used on opensource projects

Example 61 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project cobar by alibaba.

the class EncryptUtil method encrypt.

/**
 * ????
 *
 * @param src ????
 * @param key ???????????????8
 * @return ????????????
 * @throws Exception
 */
public static byte[] encrypt(byte[] src, byte[] key) throws Exception {
    // DES???????????????��???????
    SecureRandom sr = new SecureRandom();
    // ?????????????DESKeySpec????
    DESKeySpec dks = new DESKeySpec(key);
    // ???????????????????????DESKeySpec?????
    // ???SecretKey????
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    // Cipher????????????????
    Cipher cipher = Cipher.getInstance(DES);
    // ?????????Cipher????
    cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);
    // ?????��??????
    return cipher.doFinal(src);
}

Example 62 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project cobar by alibaba.

the class EncryptUtil method decrypt.

/**
 * ????
 *
 * @param src ????
 * @param key ??????????????8?????
 * @return ??????????????
 * @throws Exception
 */
public static byte[] decrypt(byte[] src, byte[] key) throws Exception {
    // DES???????????????��???????
    SecureRandom sr = new SecureRandom();
    // ????????????????DESKeySpec????
    DESKeySpec dks = new DESKeySpec(key);
    // ???????????????????????DESKeySpec?????????
    // ???SecretKey????
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    // Cipher????????????????
    Cipher cipher = Cipher.getInstance(DES);
    // ?????????Cipher????
    cipher.init(Cipher.DECRYPT_MODE, securekey, sr);
    // ?????��??????
    return cipher.doFinal(src);
}

Example 63 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project wechat by dllwh.

the class DesHelper method encrypt.

/**
 * ----------------------------------------------------- Fields end
 */
/**
 * ----------------------------------------------- [私有方法]
 */
/**
 * ----------------------------------------------- [私有方法]
 */
/**
 * @方法描述: 用指定的key对数据进行DES加密.
 * @param datasource
 *            DES加密数据
 * @param password
 *            DES加密的key
 * @return 返回解密后的数据
 */
public static String encrypt(String dataSource, String key, String type) throws Exception {
    // DES算法要求有一个可信任的随机数源
    SecureRandom random = new SecureRandom();
    // 从原始密钥数据创建DESKeySpec对象
    DESKeySpec desKey = new DESKeySpec(key.getBytes(ENCODING));
    // 创建一个密匙工厂，然后用它把DESKeySpec转换成
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(SecureUtil.DES);
    SecretKey securekey = keyFactory.generateSecret(desKey);
    // Cipher对象实际完成加密操作
    Cipher cipher = Cipher.getInstance(type);
    // 用密匙初始化Cipher对象
    cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
    // 正式执行加密操作
    return Base64Helper.encode(cipher.doFinal(dataSource.getBytes(ENCODING)));
}

Example 64 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project cloudstack by apache.

the class VncClient method encodePassword.

/**
 * Encode password using DES encryption with given challenge.
 *
 * @param challenge
 *            a random set of bytes.
 * @param password
 *            a password
 * @return DES hash of password and challenge
 */
public byte[] encodePassword(byte[] challenge, String password) throws Exception {
    // VNC password consist of up to eight ASCII characters.
    // Padding
    byte[] key = { 0, 0, 0, 0, 0, 0, 0, 0 };
    byte[] passwordAsciiBytes = password.getBytes(RfbConstants.CHARSET);
    System.arraycopy(passwordAsciiBytes, 0, key, 0, Math.min(password.length(), 8));
    // Flip bytes (reverse bits) in key
    for (int i = 0; i < key.length; i++) {
        key[i] = flipByte(key[i]);
    }
    KeySpec desKeySpec = new DESKeySpec(key);
    SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("DES");
    SecretKey secretKey = secretKeyFactory.generateSecret(desKeySpec);
    Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);
    byte[] response = cipher.doFinal(challenge);
    return response;
}

Example 65 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project AndroidUtilCode by Blankj.

the class EncryptUtils method symmetricTemplate.

/**
 * Return the bytes of symmetric encryption or decryption.
 *
 * @param data           The data.
 * @param key            The key.
 * @param algorithm      The name of algorithm.
 * @param transformation The name of the transformation, e.g., <i>DES/CBC/PKCS5Padding</i>.
 * @param isEncrypt      True to encrypt, false otherwise.
 * @return the bytes of symmetric encryption or decryption
 */
private static byte[] symmetricTemplate(final byte[] data, final byte[] key, final String algorithm, final String transformation, final byte[] iv, final boolean isEncrypt) {
    if (data == null || data.length == 0 || key == null || key.length == 0)
        return null;
    try {
        SecretKey secretKey;
        if ("DES".equals(algorithm)) {
            DESKeySpec desKey = new DESKeySpec(key);
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(algorithm);
            secretKey = keyFactory.generateSecret(desKey);
        } else {
            secretKey = new SecretKeySpec(key, algorithm);
        }
        Cipher cipher = Cipher.getInstance(transformation);
        if (iv == null || iv.length == 0) {
            cipher.init(isEncrypt ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, secretKey);
        } else {
            AlgorithmParameterSpec params = new IvParameterSpec(iv);
            cipher.init(isEncrypt ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, secretKey, params);
        }
        return cipher.doFinal(data);
    } catch (Throwable e) {
        e.printStackTrace();
        return null;
    }
}