这段代码有究竟搞什么用的？


 public string EnPas(string CodeStr)
        {
            int codeLen = 30;
            int codeSpace = codeLen - CodeStr.Length;
            string newCode;
            string returnStr = "";
            string CodeString = CodeStr;
            int cecr;
            int cecb;
            int cec;
            if (codeSpace >= 1)
            {
                for (cecr = 1; cecr <= codeSpace; cecr++)
                {
                    CodeString += (char)21;
                }
            }
            newCode = "1";
            //long neCode = 1;
            long been;
            for (cecb = 1; cecb <= codeLen; cecb++)
            {
                been = Convert.ToInt64(codeLen) + Convert.ToInt64((long)(Convert.ToChar(CodeString.Substring(cecb - 1, 1)))) * cecb;
                newCode = cheng(newCode, Convert.ToString(been));
            }
            //newCode = Convert.ToString(neCode);
            CodeString = quling(newCode);
            newCode = "";
            for (cec = 0; cec < CodeString.Length; cec++)
            {
                if (cec < CodeString.Length - 3)
                {
                    newCode += CfsCode(CodeString.Substring(cec, 3));
                }
                else
                {
                    newCode += CfsCode(CodeString.Substring(cec, CodeString.Length - cec));
                    //Response.Write(CodeString.Substring(cec, CodeString.Length - cec));
                    //Response.Write("<BR>");
                }            }
            for (cec = 20; cec < newCode.Length - 16; cec += 2)
            {
                returnStr += newCode.Substring(cec - 1, 1);
            }
            return returnStr;
        }