C#MD5加密的两种方式

在开发过程当中，我们经常会用到MD5加密，下面介绍MD5加密的两种方式：

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/// <summary> /// MD5字符串加密 /// </summary> /// <param name="txt"></param> /// <returns>加密后字符串</returns> public static string GenerateMD5(string txt) {     using (MD5 mi = MD5.Create())     {         byte[] buffer = Encoding.Default.GetBytes(txt);         //开始加密         byte[] newBuffer = mi.ComputeHash(buffer);         StringBuilder sb = new StringBuilder();         for (int i = 0; i < newBuffer.Length; i++)         {             sb.Append(newBuffer[i].ToString("x2"));         }         return sb.ToString();     } }   /// <summary> /// MD5流加密 /// </summary> /// <param name="inputStream"></param> /// <returns></returns> public static string GenerateMD5(Stream inputStream) {     using (MD5 mi = MD5.Create())     {         //开始加密         byte[] newBuffer = mi.ComputeHash(inputStream);         StringBuilder sb = new StringBuilder();         for (int i = 0; i < newBuffer.Length; i++)         {             sb.Append(newBuffer[i].ToString("x2"));         }         return sb.ToString();     } }