MD5密钥的加密，解密生成密钥-白红宇

MD5密钥的加密，解密生成密钥

阅读量：5245 次

发布时间：2019-06-14

本文共 2559 字，大约阅读时间需要 8 分钟。

///         /// 加密        /// 
        /// 要加密的字符串，即明文        /// 公共密钥        /// 是否使用MD5生成机密秘钥        /// 
     
      加密后的字符串，即密文
             public static string Encrypt(string toEncrypt, string key, bool useHashing)        {            try            {                byte[] keyArray;                byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);                if (useHashing)                {                    MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();                    keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));                }                else                    keyArray = UTF8Encoding.UTF8.GetBytes(key);                TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();                tdes.Key = keyArray;                tdes.Mode = CipherMode.ECB;                tdes.Padding = PaddingMode.PKCS7;                ICryptoTransform cTransform = tdes.CreateEncryptor();                byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);                return Convert.ToBase64String(resultArray, 0, resultArray.Length);            }            catch            {            }            return string.Empty;        }        ///         /// 解密        /// 
        /// 要解密的字符串，即密文        /// 公共密钥        /// 是否使用MD5生成机密密钥        /// 
     
      解密后的字符串，即明文
             public static string Decrypt(string toDecrypt, string key, bool useHashing)        {            try            {                byte[] keyArray;                byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);                if (useHashing)                {                    MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();                    keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));                }                else                    keyArray = UTF8Encoding.UTF8.GetBytes(key);                TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();                tdes.Key = keyArray;                tdes.Mode = CipherMode.ECB;                tdes.Padding = PaddingMode.PKCS7;                ICryptoTransform cTransform = tdes.CreateDecryptor();                byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);                return UTF8Encoding.UTF8.GetString(resultArray);            }            catch            {            }            return string.Empty;        }