学步园

 public static String encryptForDES(Stringsouce, String key) throws InvalidKeyException,NoSuchAlgorithmException, InvalidKeySpecException,NoSuchPaddingException, IllegalBlockSizeException,

    BadPaddingException,UnsupportedEncodingException {

    //DES算法要求有一个可信任的随机数源

    SecureRandom sr = newSecureRandom();

    //从原始密匙数据创建DESKeySpec对象

    DESKeySpec dks = newDESKeySpec(key.getBytes());

    //创建一个密匙工厂，然后用它把DESKeySpec转换成 一个SecretKey对象

    SecretKeyFactorykeyFactory = SecretKeyFactory.getInstance("DES");

    SecretKey key1 =keyFactory.generateSecret(dks);

    //Cipher对象实际完成加密操作

    Cipher cipher =Cipher.getInstance("DES");

    // 用密匙初始化Cipher对象

   cipher.init(Cipher.ENCRYPT_MODE, key1, sr);

    // 现在，获取数据并加密

    byte encryptedData[] =cipher.doFinal(souce.getBytes());

    //通过BASE64位编码成字符创形式

    

    return newString(Base64.encode(encryptedData, Base64.DEFAULT),"UTF-8");

    }

using System.Security.Cryptography;

using System.IO;

// des加密函数

public string Encrypt(string pToEncrypt, string sKey)

{

// 创建des加密没

using (DESCryptoServiceProvider des = newDESCryptoServiceProvider())

{

// 得到UTF-8的数据源

byte[] inputByteArray =Encoding.UTF8.GetBytes(pToEncrypt);

// 设置key和iv密钥

des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);

des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);

// 创建数据流并进行加密

MemoryStream ms = new MemoryStream();

using (CryptoStream cs = new CryptoStream(ms,des.CreateEncryptor(), CryptoStreamMode.Write))

{

cs.Write(inputByteArray, 0, inputByteArray.Length);

cs.FlushFinalBlock();

cs.Close();

}

// 关闭数据流

ms.Close();

return Convert.ToBase64String(ms.ToArray());

}

}