Java DES 加解密（”DES/ECB/PKCS1Padding”）详解编程语言

private static final Cipher DES_CIPHER; 
 
static { 
    try { 
        DES_CIPHER = Cipher.getInstance("DES/ECB/PKCS1Padding"); 
    } 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(IcbcConstant.ENCODING_GBK), "DES")); 
        byte[] encryptedData = DES_CIPHER.doFinal(encryptString.getBytes(IcbcConstant.ENCODING_GBK)); 
        return new String(encryptedData, IcbcConstant.ENCODING_GBK); 
    } 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(IcbcConstant.ENCODING_GBK), "DES")); 
        byte decryptedData[] = DES_CIPHER.doFinal(decryptString.getBytes(IcbcConstant.ENCODING_GBK)); 
        return new String(decryptedData, IcbcConstant.ENCODING_GBK); 
    } catch (Throwable e) { 
        throw Throwables.propagate(e); 
    } 
}