今天在开发一个软件时,同时在B/S版和C/S版中都要用到MD5加密,在
ASP.NET中使用的是 /** <summary> /// 取得MD5加密串 /// </summary> /// <param name="input">源明文字符串</param> /// <returns>密文字符串</returns> public static string GetMD5Hash(string input) ...{ return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strOriginal, "MD5"); } 的加密方式; 而在WinForm中用的是/** <summary>
/// 取得MD5加密串 /// </summary> /// <param name="input">源明文字符串</param> /// <returns>密文字符串</returns> public static string GetMD5Hash(string input) ...{ System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider(); byte[] bs = System.Text.Encoding.Default.GetBytes(input); bs = md5.ComputeHash(bs); System.Text.StringBuilder s = new System.Text.StringBuilder(); foreach (byte b in bs) ...{ s.Append(b.ToString("x2").ToUpper()); } string password = s.ToString(); return password; } 但发现同样一个字符串,两种方式得出的密文是不一样的,最后才发现原来是编码方式导致的,ASP.NET里默认的是UTF-8编码,把WinForm程序里的System.Text.Encoding.Default.GetBytes(input);替换成System.Text.Encoding.UTF8.GetBytes(input);即可 最终正确版:/** <summary>
/// 取得MD5加密串 /// </summary> /// <param name="input">源明文字符串</param> /// <returns>密文字符串</returns> public static string GetMD5Hash(string input) ...{ System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider(); byte[] bs = System.Text.Encoding.UTF8.GetBytes(input); bs = md5.ComputeHash(bs); System.Text.StringBuilder s = new System.Text.StringBuilder(); foreach (byte b in bs) ...{ s.Append(b.ToString("x2").ToUpper()); } string password = s.ToString(); return password; }