C#常用的MD5加密演算法：

public static string MD5(string password) {
   byte[] textBytes = System.Text.Encoding.Default.GetBytes(password);
   try {
      System.Security.Cryptography.MD5CryptoServiceProvider cryptHandler;
      cryptHandler = new System.Security.Cryptography.MD5CryptoServiceProvider();
      byte[] hash = cryptHandler.ComputeHash (textBytes);
      string ret = "";
      foreach (byte a in hash) {
            ret += a.ToString ("x");
      }
      return ret ;
   }
   catch {
      throw;
   } 
} 
 

在介面對接的時候，用C#寫的MD5演算法得出的結果和PHP的MD5()得出的結果會不一樣。

我們修改C#加密方法，使其與PHP加密結果一樣

public static string MD5(string password) {
   byte[] textBytes = System.Text.Encoding.Default.GetBytes(password);
   try {
      System.Security.Cryptography.MD5CryptoServiceProvider cryptHandler;
      cryptHandler = new System.Security.Cryptography.MD5CryptoServiceProvider();
      byte[] hash = cryptHandler.ComputeHash (textBytes);
      string ret = "";
      foreach (byte a in hash) {
         if (a<16)
            ret += "0" + a.ToString ("x");
         else
            ret += a.ToString ("x");
      }
      return ret ;
   }
   catch {
      throw;
   } 
}