Java DESede 加解密（"DESede/ECB/PKCS5Padding"）

 

private static final Cipher DES_CIPHER;


static {
    try {
        DES_CIPHER = Cipher.getInstance("DESede/ECB/PKCS5Padding");
    } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
        throw Throwables.propagate(e);
    }
}

public static String encryptDES(String encryptString, String encryptKey) {
    try {
        DES_CIPHER.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(IcbcBindConstant.ENCODING_GBK), "DESede"));
        byte[] encryptedData = DES_CIPHER.doFinal(encryptString.getBytes(IcbcBindConstant.ENCODING_GBK));
        String hexData = Hex.encodeHexString(encryptedData).toUpperCase();
        return StringUtils.leftPad(String.valueOf(hexData.length()), 6, '0') + hexData;
    } catch (Throwable e) {
        throw Throwables.propagate(e);
    }
}

public static String decryptDES(String decryptString, String decryptKey) {
    try {
        DES_CIPHER.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(IcbcBindConstant.ENCODING_GBK), "DESede"));
        byte[] decryptedData = DES_CIPHER.doFinal(Hex.decodeHex(decryptString.substring(6).toCharArray()));
        return new String(decryptedData, IcbcBindConstant.ENCODING_GBK);
    } catch (Throwable e) {
        throw Throwables.propagate(e);
    }
}