重写一个 自定义Membership Provider

Question

没有写过参考
http://msdn2.microsoft.com/zh-cn/library/f1kyba5e(VS.80).aspx

Answer 1

private string EncodePassword(string password)
    {
      string encodedPassword = password;      switch (PasswordFormat)
      {
        case MembershipPasswordFormat.Clear:
          break;
        case MembershipPasswordFormat.Encrypted:
          encodedPassword = 
            Convert.ToBase64String(EncryptPassword(Encoding.Unicode.GetBytes(password)));
          break;
        case MembershipPasswordFormat.Hashed:
          HMACSHA1 hash = new HMACSHA1();
          hash.Key = HexToByte(machineKey.ValidationKey);
          encodedPassword = 
            Convert.ToBase64String(hash.ComputeHash(Encoding.Unicode.GetBytes(password)));
          break;
        default:
          throw new ProviderException("Unsupported password format.");
      }      return encodedPassword;
    }//怎么改为md5,8~25位中的16为加密。