.net core 使用DES加密字符串

找了很久，都是用的第三方的插件处理，但是第三方的插件不兼容.net core中内置包。

接下来分享自己的方法：

1、创建一个加密方法类：SecurityHelper。

 public class SecurityHelper
    {
        #region 加密解密法一
        //默认密钥向量 
        private static byte[] Keys = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };

        /// <summary> 
        /// DES加密字符串 
        /// </summary> 
        /// <param name="encryptString">待加密的字符串</param> 
        /// <param name="encryptKey">加密密钥,要求为16位</param> 
        /// <returns>加密成功返回加密后的字符串，失败返回源串</returns> 

        public static string EncryptDES(string encryptString, string encryptKey = "Key123Ace#321Key")
        {
            try
            {
                byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 16));
                byte[] rgbIV = Keys;
                byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
                var DCSP = Aes.Create(); 
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Convert.ToBase64String(mStream.ToArray());
            }
            catch (Exception ex)
            {
                return ex.Message + encryptString;
            }

        }

        /// <summary> 
        /// DES解密字符串 
        /// </summary> 
        /// <param name="decryptString">待解密的字符串</param> 
        /// <param name="decryptKey">解密密钥,要求为16位,和加密密钥相同</param> 
        /// <returns>解密成功返回解密后的字符串，失败返源串</returns> 

        public static string DecryptDES(string decryptString, string decryptKey = "Key123Ace#321Key")
        {
            try
            {
                byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey.Substring(0, 16));
                byte[] rgbIV = Keys;
                byte[] inputByteArray = Convert.FromBase64String(decryptString);
                var DCSP = Aes.Create();
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
                Byte[] inputByteArrays = new byte[inputByteArray.Length];
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Encoding.UTF8.GetString(mStream.ToArray());
            }
            catch (Exception ex)
            {
                return ex.Message + decryptString;
            }

        }
        #endregion 
    }

2、调用方法：

            //加密字符串
            var s = SecurityHelper.EncryptDES("fuckyou"); 
            
            //解密字符串
            var s1 = SecurityHelper.DecryptDES(s);

注意：加密的密钥必须是16位，因为是通过AES处理的Create，AES内置的位数为16位。

【本文由“oSeHTs-IsJAOjA2yk-lgG7H6ivAU@wechat.sohu.com”发布，2017年5月21日】