dll里边有个check.网络验证，下面是反编译源码。
    public bool hishoppass_verify(string key)
    {
      bool flag;

      string[] strs = key.Split(new char[]{46});
      try
      {
        UnicodeEncoding unicodeEncoding = new UnicodeEncoding();
        byte[] bs1 = hishoppass_num2bytes(strs[0]);
        byte[] bs2 = hishoppass_num2bytes(strs[1]);
        byte[] bs3 = hishoppass_num2bytes(strs[2]);
        string str = hishoppass_getsn();
        byte[] bs4 = new SHA1CryptoServiceProvider().ComputeHash(bs3);
        if (unicodeEncoding.GetString(bs4) == unicodeEncoding.GetString(bs2))
        {
          RSACryptoServiceProvider rSACryptoServiceProvider = new RSACryptoServiceProvider();
          rSACryptoServiceProvider.FromXmlString(str);
          RSAPKCS1SignatureDeformatter rSAPKCS1SignatureDeformatter = new RSAPKCS1SignatureDeformatter(rSACryptoServiceProvider);
          rSAPKCS1SignatureDeformatter.SetHashAlgorithm("SHA1");
          flag = rSAPKCS1SignatureDeformatter.VerifySignature(bs2, bs1);
        }
        else
        {
          flag = false;
        }

dll应该如何修改呢。。。谢谢

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