C# 對密碼等資料進行對稱性加密解密

類

/// <summary>
/// DESEncrypt加密解密算法。
/// </summary>
public class DESEncrypt
{
        private DESEncrypt()
        {
            //
            // TODO: 在此處添加構造函數邏輯
            //
        }

        //自定義密碼
        private static string key = "XluK7kDuA9yptTks";

        /// <summary>
        /// 對稱加密解密的密鑰
        /// </summary>
        public static string Key
        {
            get
            {
                return key;
            }
            set
            {
                key = value;
            }
        }

        /// <summary>
        /// DES加密
        /// </summary>
        /// <param name="encryptString"></param>
        /// <returns></returns>
        public static string DesEncrypt(string encryptString)
        {
            try
            {
                byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(0, 8));
                byte[] keyIV = keyBytes;
                byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
                DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, provider.CreateEncryptor(keyBytes, keyIV), CryptoStreamMode.Write);
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Convert.ToBase64String(mStream.ToArray());
            }
            catch (Exception)
            {
                return "";
            }
        }

        /// <summary>
        /// DES解密
        /// </summary>
        /// <param name="decryptString"></param>
        /// <returns></returns>
        public static string DesDecrypt(string decryptString)
        {
            try
            {
                byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(0, 8));
                byte[] keyIV = keyBytes;
                byte[] inputByteArray = Convert.FromBase64String(decryptString);
                DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, provider.CreateDecryptor(keyBytes, keyIV), CryptoStreamMode.Write);
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Encoding.UTF8.GetString(mStream.ToArray());
            }
            catch (Exception)
            {
                return "";
            }
        }
    }
           

調用：

//加密
string account=DESEncrypt.DesEncrypt(“account”);
//解密
account=DESEncrypt.DesDecrypt(account);