支付宝接口整合（封装）asp版本
<%option explicit '功能：支付宝接口公用函数(封装) '版本：1.0 '作者：Joost '创建日期：2011-1-26 '说明： '封装支付宝接口，方便调用，不涉及功能变动，用户只需实例化该类，设置参数就可以，如果你发现BUG也可以在http://wei0523123.iteye.com/给我留言 '该代码仅供学习和研究支付宝接口使用，只是提供一个参考。%><%'dim alipay'set alipay=new cls_alipay''----------------------------------------------------------''基本参数设定'alipay.partner="lvcheng"'alipay.key="lvcheng"'alipay.seller_email="lvcheng"''alipay.input_charset="gb2312"'alipay.notify_url="http://www.lvcheng123.com"'alipay.return_url="http://www.lvcheng123.com"'alipay.show_url="http://www.lvcheng123.com"'alipay.sign_type="MD5"'alipay.antiphishing="0"'alipay.mainname="绿城团购"''----------------------------------------------------------''alipay.out_trade_no'alipay.subject="会员xxxx订购xxxx"'alipay.body="订单详细"'alipay.total_fee=5000'alipay.pay_mode="directPay"''alipay.encrypt_key''alipay.exter_invoke_ip''alipay.extra_common_param''alipay.buyer_email''alipay.royalty_type''alipay.royalty_parameters''alipay.it_b_pay=15'''----------------------------------------------------------'alipay.alipay_service()'dim arr:arr=alipay.para'response.Write(alipay.input_charset&"<br>")'response.Write(arr(0)&"<br>")'response.Write alipay.create_url()'set alipay=nothingClass cls_alipayprivate alipay_md5private gateway'网关地址private mysign'加密结果（签名结果）private sPara'需要加密的已经过滤后的参数数'----------------------------------------------------------'基本参数设定private s_partnerprivate s_keyprivate s_seller_emailprivate s_input_charsetprivate s_notify_urlprivate s_return_urlprivate s_show_urlprivate s_sign_typeprivate s_antiphishingprivate s_mainname'----------------------------------------------------------'请求参数private s_out_trade_noprivate s_subjectprivate s_body'订单描述、订单详细、订单备注，显示在支付宝收银台里的"商品描述"里private s_total_feeprivate s_pay_modeprivate s_paymethodprivate s_defaultbankprivate s_encrypt_keyprivate s_exter_invoke_ipprivate s_extra_common_paramprivate s_buyer_emailprivate s_royalty_typeprivate s_royalty_parametersprivate s_it_b_payprivate s_para'----------------------------------------------------------public Property Let partner(byval val)s_partner = valend Propertypublic Property Get partner()partner = s_partnerend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let key(byval val)s_key = valend Propertypublic Property Get key()key = s_keyend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let seller_email(byval val)s_seller_email = valend Propertypublic Property Get seller_email()seller_email = s_seller_emailend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let input_charset(byval val)s_input_charset = valend Propertypublic Property Get input_charset()input_charset = s_input_charsetend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let notify_url(byval val)s_notify_url = valend Propertypublic Property Get notify_url()notify_url = s_notify_urlend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let return_url(byval val)s_return_url = valend Propertypublic Property Get return_url()return_url = s_return_urlend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let show_url(byval val)s_show_url = valend Propertypublic Property Get show_url()show_url = s_show_urlend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let sign_type(byval val)s_sign_type = valend Propertypublic Property Get sign_type()sign_type = s_sign_typeend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let antiphishing(byval val)if(val = "1") thens_encrypt_key = query_timestamp(s_partner)s_exter_invoke_ip = getip()'获取客户端的IP地址end ifs_antiphishing = valend Propertypublic Property Get antiphishing()antiphishing = s_antiphishingend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let mainname(byval val)s_mainname = valend Propertypublic Property Get mainname()mainname = s_mainnameend Property'----------------------------------------------------------'----------------------------------------------------------'----------------------------------------------------------public Property Let out_trade_no(byval val)s_out_trade_no = valend Propertypublic Property Get out_trade_no()out_trade_no = s_out_trade_noend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let subject(byval val)s_subject = valend Propertypublic Property Get subject()subject = s_subjectend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let body(byval val)s_body = valend Propertypublic Property Get body()body = s_bodyend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let total_fee(byval val)s_total_fee = valend Propertypublic Property Get total_fee()total_fee = s_total_feeend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let pay_mode(byval val)if val = "directPay" thens_paymethod = "directPay"'默认支付方式，四个值可选：bankPay(网银); cartoon(卡通); directPay(余额); CASH(网点支付)s_defaultbank= ""elses_paymethod = "bankPay"'默认支付方式，四个值可选：bankPay(网银); cartoon(卡通); directPay(余额); CASH(网点支付)s_defaultbank= val'默认网银代号，代号列表见http://club.alipay.com/read.php?tid=8681379end ifs_pay_mode = valend Propertypublic Property Get pay_mode()pay_mode = s_pay_modeend Property'----------------------------------------------------------'----------------------------------------------------------'只读'public Property Let defaultbank(byval val)'s_defaultbank = val'end Propertypublic Property Get defaultbank()defaultbank = s_defaultbankend Property'----------------------------------------------------------'----------------------------------------------------------'只读'public Property Let defaultbank(byval val)'s_defaultbank = val'end Propertypublic Property Get paymethod()paymethod = s_paymethodend Property'----------------------------------------------------------'----------------------------------------------------------'只读'public Property Let encrypt_key(byval val)'s_encrypt_key = val'end Propertypublic Property Get encrypt_key()encrypt_key = s_encrypt_keyend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let exter_invoke_ip(byval val)s_exter_invoke_ip = valend Propertypublic Property Get exter_invoke_ip()exter_invoke_ip = s_exter_invoke_ipend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let extra_common_param(byval val)s_extra_common_param = valend Propertypublic Property Get extra_common_param()extra_common_param = s_extra_common_paramend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let buyer_email(byval val)s_buyer_email = valend Propertypublic Property Get buyer_email()buyer_email = s_buyer_emailend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let royalty_type(byval val)s_royalty_type = valend Propertypublic Property Get royalty_type()royalty_type = s_royalty_typeend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let royalty_parameters(byval val)s_royalty_parameters = valend Propertypublic Property Get royalty_parameters()royalty_parameters = s_royalty_parametersend Property'----------------------------------------------------------'----------------------------------------------------------public Property Let it_b_pay(byval val)s_it_b_pay = valend Propertypublic Property Get it_b_pay()it_b_pay = s_it_b_payend Property'----------------------------------------------------------'----------------------------------------------------------'只读'public Property Let input_charset(byval val)'s_input_charset = val'end Propertypublic Property Get para()para = s_paraend Property'----------------------------------------------------------'初始化'----------------------------------------------------------private sub Class_Initializedim sTime'网关地址gateway="http://notify.alipay.com/trade/notify_query.do?"'----------------------------------------------------------'以下默认初始化参数s_partner="lvcheng"s_key="lvcheng"s_seller_email="lvcheng"s_input_charset="utf-8"'设置编码s_notify_url="http://www.lvcheng123.com"s_return_url="http://www.lvcheng123.com"s_show_url="http://www.lvcheng123.com"s_sign_type="MD5"s_antiphishing="0"s_mainname="绿城团购"s_paymethod="directPay"sTime=Now()'初始订单编号s_out_trade_no=year(sTime)&month(sTime)&day(sTime)&hour(sTime)&minute(sTime)&second(sTime)'以上默认初始化参数'----------------------------------------------------------set alipay_md5=new cls_alipay_md5'设置MD5编码alipay_md5.input_charset=s_input_charsetend sub'----------------------------------------------------------'销毁对象'----------------------------------------------------------private sub Class_Terminateset alipay_md5=nothingend sub'----------------------------------------------------------'构造要请求的参数数组，无需改动'----------------------------------------------------------private sub cate_para()s_para = Array("service=create_direct_pay_by_user","payment_type=1","partner="&s_partner,"seller_email="&s_seller_email,"return_url="&s_return_url,"notify_url="&s_notify_url,"_input_charset="&s_input_charset,"show_url="&s_show_url,"out_trade_no="&s_out_trade_no,"subject="&s_subject,"body="&s_body,"total_fee="&s_total_fee,"paymethod="&s_paymethod,"defaultbank="&s_defaultbank,"anti_phishing_key="&s_encrypt_key,"exter_invoke_ip="&s_exter_invoke_ip,"extra_common_param="&s_extra_common_param,"buyer_email="&s_buyer_email,"royalty_type="&s_royalty_type,"royalty_parameters="&s_royalty_parameters,"it_b_pay="&s_it_b_pay)end sub'----------------------------------------------------------'构造函数'从配置文件及入口文件中初始化变量'inputPara 需要加密的参数数组'----------------------------------------------------------function alipay_service()dim sort_para'构造要请求的参数数组call cate_para()gateway = "https://www.alipay.com/cooperate/gateway.do?"sPara = para_filter(s_para)sort_para = arg_sort(sPara)'得到从字母a到z排序后的加密参数数组'获得签名结果mysign = build_mysign(sort_para,s_key)end function'----------------------------------------------------------'构造请求URL（GET方式请求）'输出 请求url'----------------------------------------------------------function create_url()dim sort_para,arg,urlurl = gatewaysort_para = arg_sort(sPara)arg = create_linkstring_urlencode(sort_para)'把数组所有元素，按照"参数=参数值"的模式用"&"字符拼接成字符串url = url & arg & "sign=" &mysign & "&sign_type=" & s_sign_typecreate_url = urlend function'----------------------------------------------------------'构造Post表单提交HTML（POST方式请求）'输出 表单提交HTML文本'----------------------------------------------------------function build_postform()dim nCount,nLen,sHtml,pos,itemName,itemValuesHtml = "<form id='alipaysubmit' name='alipaysubmit' action='"& gateway &"_input_charset="&s_input_charset&"' method='post'>"nCount = ubound(sPara)for i = 0 to nCount'把sArray的数组里的元素格式：变量名=值，分割开来pos = Instr(sPara(i),"=")'获得=字符的位置nLen = Len(sPara(i))'获得字符串长度itemName = left(sPara(i),pos-1)'获得变量名itemValue = right(sPara(i),nLen-pos)'获得变量的值sHtml = sHtml & "<input type='hidden' name='"& itemName &"' value='"& itemValue &"'/>"nextsHtml = sHtml & "<input type='hidden' name='sign' value='"& mysign &"'/>"sHtml = sHtml & "<input type='hidden' name='sign_type' value='"& s_sign_type &"'/></form>"sHtml = sHtml & "<input type=""button"" name=""v_action"" value=""支付宝确认付款"" document.forms['alipaysubmit'].submit();"">"build_postform = sHtmlend function'********************************************************************************'----------------------------------------------------------'对notify_url的认证'输出 验证结果：true/falsefunction notify_verify()dim responseTxt,sGetArray,sArray,sort_para,sWordresponseTxt = get_http()'判断消息是不是支付宝发出sGetArray = GetRequestPost()'获取支付宝POST过来通知消息，并以"参数名=参数值"的形式组成数组if IsArray(sGetArray) then'验证是否有数组传来'生成签名结果sArray = para_filter(sGetArray)'对所有POST反馈回来的数据去空格sort_para = arg_sort(sArray)'对所有POST反馈回来的数据排序mysign= build_mysign(sort_para,s_key)'生成签名结果'写日志记录（若要调试，请取消下面两行注释）sWord = "responseTxt="& responseTxt &"\n return_url_log:sign="&request.Form("sign")&"&mysign="&mysign&"&"&create_linkstring(sort_para)log_result(sWord)'判断veryfy_responsetTxtresult是否为ture，生成的签名结果mysign与获得的签名结果sign是否一致'responsetTxt的结果不是true，与服务器设置问题、合作身份者ID、notify_id一分钟失效有关'mysign与sign不等，与安全校验码、请求时的参数格式（如：带自定义参数等）、编码格式有关if mysign = request.Form("sign") and responseTxt = "true" thennotify_verify = trueelsenotify_verify = falseend ifelsenotify_verify = falseend ifend function'----------------------------------------------------------'对return_url的认证'输出 验证结果：true/false'----------------------------------------------------------function return_verify()dim sWord,responseTxt,sGetArray,sArray,sort_pararesponseTxt = get_http()'判断消息是不是支付宝发出sGetArray = GetRequestGet()'获取支付宝GET过来通知消息，并以"参数名=参数值"的形式组成数组if IsArray(sGetArray) then'验证是否有数组传来'生成签名结果sArray = para_filter(sGetArray)'对所有GET反馈回来的数据去空格sort_para = arg_sort(sArray)'对所有GET反馈回来的数据排序mysign= build_mysign(sort_para,s_key)'生成签名结果'写日志记录（若要调试，请取消下面两行注释）'sWord = "responseTxt="& responseTxt &"\n return_url_log:sign="&request.QueryString("sign")&"&mysign="&mysign&"&"&create_linkstring(sort_para)'log_result(sWord)'判断responsetTxt是否为ture，生成的签名结果mysign与获得的签名结果sign是否一致'responsetTxt的结果不是true，与服务器设置问题、合作身份者ID、notify_id一分钟失效有关'mysign与sign不等，与安全校验码、请求时的参数格式（如：带自定义参数等）、编码格式有关if mysign = request.QueryString("sign") and responseTxt = "true" thenreturn_verify = trueelsereturn_verify = falseend ifelsereturn_verify = falseend ifend function'----------------------------------------------------------'获取支付宝GET过来通知消息，并以"参数名=参数值"的形式组成数组'输出 request回来的信息组成的数组'----------------------------------------------------------function GetRequestGet()dim sArray(),varItem,ii = 0For Each varItem in Request.QueryStringRedim Preserve sArray(i)sArray(i) = varItem&"="&Request(varItem) i = i + 1Next if i = 0 then'验证是否有数组传来GetRequestGet = ""elseGetRequestGet = sArrayend ifend function'----------------------------------------------------------'获取支付宝POST过来通知消息，并以"参数名=参数值"的形式组成数组'输出 request回来的信息组成的数组'----------------------------------------------------------function GetRequestPost()dim sArray(),varItem,ii = 0For Each varItem in Request.FormRedim Preserve sArray(i)sArray(i) = varItem&"="&Request(varItem) i = i + 1Next if i = 0 then'验证是否有数组传来GetRequestPost = ""elseGetRequestPost = sArrayend ifend function'----------------------------------------------------------'获取远程服务器ATN结果'输出 服务器ATN结果字符串'----------------------------------------------------------private function get_http()dim Retrieval,ResponseTxtgateway = gateway &"partner=" & s_partner & "&notify_id=" & request("notify_id")Set Retrieval = Server.CreateObject("Msxml2.ServerXMLHTTP.3.0")Retrieval.setOption 2, 13056 Retrieval.open "GET", gateway, False, "", "" Retrieval.send()ResponseTxt = Retrieval.ResponseTextset Retrieval = Nothingget_http = ResponseTxtend function'----------------------------------------------------------'********************************************************************************'----------------------------------------------------------'生成签名结果'sArray 要加密的数组'key 安全校验码'sign_type 加密类型'输出 签名结果字符串'----------------------------------------------------------private function build_mysign(sArray, key)dim prestr,nLenprestr = create_linkstring(sArray)'把数组所有元素，按照"参数=参数值"的模式用"&"字符拼接成字符串'去掉最後一個&字符nLen = Len(prestr)prestr = left(prestr,nLen-1)prestr = prestr & key'把拼接后的字符串再与安全校验码直接连接起来mysign = sign(prestr)'把最终的字符串加密，获得签名结果build_mysign = mysignend function'----------------------------------------------------------'把数组所有元素，按照"参数=参数值"的模式用"&"字符拼接成字符串'sArray 需要拼接的数组'输出 拼接完成以后的字符串'----------------------------------------------------------private function create_linkstring(sArray)dim nCount,inCount = ubound(sArray)dim prestrfor i = 0 to nCountprestr = prestr & sArray(i) & "&"nextcreate_linkstring = prestrend function'----------------------------------------------------------'把数组所有元素，按照"参数=参数值"的模式用"&"字符拼接成字符串'使用场景：GET方式请求时，对URL的中文进行编码'sArray 需要拼接的数组'输出 拼接完成以后的字符串'----------------------------------------------------------private function create_linkstring_urlencode(sArray)dim nCount,i,pos,nLen,itemName,itemValuenCount = ubound(sArray)dim prestrfor i = 0 to nCount'把sArray的数组里的元素格式：变量名=值，分割开来pos = Instr(sArray(i),"=")'获得=字符的位置nLen = Len(sArray(i))'获得字符串长度itemName = left(sArray(i),pos-1)'获得变量名itemValue = right(sArray(i),nLen-pos)'获得变量的值if itemName <> "service" and itemName <> "_input_charset" thenprestr = prestr & itemName &"=" & server.URLEncode(itemValue) & "&"elseprestr = prestr & sArray(i) & "&"end ifnextcreate_linkstring_urlencode = prestrend function'----------------------------------------------------------'除去数组中的空值和签名参数'sArray 加密参数组'输出 去掉空值与签名参数后的新加密参数组'----------------------------------------------------------private function para_filter(sArray)dim para(),nCount,i,pos,nLen,itemName,itemValuenCount = ubound(sArray)dim jj = 0for i = 0 to nCount'把sArray的数组里的元素格式：变量名=值，分割开来pos = Instr(sArray(i),"=")'获得=字符的位置nLen = Len(sArray(i))'获得字符串长度itemName = left(sArray(i),pos-1)'获得变量名itemValue = right(sArray(i),nLen-pos)'获得变量的值if itemName <> "sign" and itemName <> "sign_type" and itemValue <> "" thenRedim Preserve para(j)para(j) = sArray(i)j = j + 1end ifnextpara_filter = paraend function'----------------------------------------------------------'对数组排序'sArray 排序前的数组'输出 排序后的数组'----------------------------------------------------------private function arg_sort(sArray)dim nCount,i,minmax,minmaxSlot,j,mark,tempnCount = ubound(sArray)For i = nCount TO 0 Step -1minmax = sArray( 0 )minmaxSlot = 0For j = 1 To imark = (sArray( j ) > minmax)If mark Then minmax = sArray( j )minmaxSlot = jend IfNextIf minmaxSlot <> i Then temp = sArray( minmaxSlot )sArray( minmaxSlot ) = sArray( i )sArray( i ) = tempend IfNextarg_sort = sArrayend function'----------------------------------------------------------'加密字符串'prestr 需要加密的字符串'sign_type 加密类型'输出 加密结果'----------------------------------------------------------private function sign(prestr)dim sResultif s_sign_type = "MD5" thensResult = alipay_md5.md5(prestr)else sResult = ""end ifsign = sResultend function'----------------------------------------------------------'用于防钓鱼，调用接口query_timestamp来获取时间戳的处理函数'注意：远程解析XML出错，与IIS服务器配置有关'partner 合作身份者ID'输出 时间戳字符串'----------------------------------------------------------private function query_timestamp(partner)dim url,UserData,encrypt_key, http,xmlurl = "https://mapi.alipay.com/gateway.do?service=query_timestamp&partner="&s_partnerSet http=Server.CreateObject("Microsoft.XMLHTTP")http.Open "GET",url,Falsehttp.sendSet xml=Server.CreateObject("Microsoft.XMLDOM")xml.Async=truexml.ValidateOnParse=Falsexml.Load(http.ResponseXML)set UserData=xml.getElementsByTagName("encrypt_key")' 节点的名称if isnull(xml.getElementsByTagName("encrypt_key") ) thenencrypt_key = ""elseencrypt_key = UserData.item(0).childnodes(0).textend ifquery_timestamp = encrypt_keyend function'----------------------------------------------------------'写日志，方便测试（看网站需求，也可以改成存入数据库）'sWord 要写入日志里的文本内容'----------------------------------------------------------private function log_result(sWord)dim fs,tsset fs= createobject("scripting.filesystemobject")set ts=fs.createtextfile(server.MapPath("/pay/log/"&replace(now(),":","")&Rnd(1000)&".txt"),true)ts.writeline(sWord)ts.closeset ts=Nothingset fs=Nothingend function'----------------------------------------------------------'过滤特殊字符'Str 要被过滤的字符串'输出 已被过滤掉的新字符串'----------------------------------------------------------private function delstr(str)if IsNull(str) Or IsEmpty(str) Thenstr= ""end ifdelstr= Replace(str,";","")delstr= Replace(delstr,"'","")delstr= Replace(delstr,"&","")delstr= Replace(delstr," ","")delstr= Replace(delstr," ","")delstr= Replace(delstr,"%20","")delstr= Replace(delstr,"--","")delstr= Replace(delstr,"==","")delstr= Replace(delstr,"<","")delstr= Replace(delstr,">","")delstr= Replace(delstr,"%","")end function'--------------------------------------------------'获取客户端IP的处理函数'输出 IP'--------------------------------------------------public function getip()Dim addr, x, yx = request.ServerVariables("HTTP_X_FORWARDED_FOR")y = request.ServerVariables("REMOTE_ADDR")if(isN(x) or lCase(x)="unknown")thenaddr=yelseaddr=xend ifif InStr(addr,".")=0 Then addr = "0.0.0.0"getip = addrend function'--------------------------------------------------'判断字段是否为空的处理函数'输出 true or false'--------------------------------------------------private function isN(ByVal s)isN = FalseSelect Case VarType(s)Case vbEmpty, vbNullisN = True : Exit FunctionCase vbStringIf s="" Then isN = True : Exit FunctionCase vbObjectSelect Case TypeName(s)Case "Nothing","Empty"isN = True : Exit FunctionCase "Recordset"If s.State = 0 Then isN = True : Exit FunctionIf s.Bof And s.Eof Then isN = True : Exit FunctionCase "Dictionary"If s.Count = 0 Then isN = True : Exit FunctionEnd SelectCase vbArray,8194,8204,8209If Ubound(s)=-1 Then isN = True : Exit FunctionEnd Selectend functionEnd ClassPrivate Const BITS_TO_A_BYTE = 8Private Const BYTES_TO_A_WORD = 4Private Const BITS_TO_A_WORD = 32Class cls_alipay_md5'功能：支付宝MD5加密处理核心文件，不需要修改'版本：3.0'修改日期：2010-05-27private s_input_charsetPrivate m_lOnBits(30)Private m_l2Power(30)Public Property Let input_charset(byval val)s_input_charset = valEnd PropertyPublic Property Get input_charset()input_charset = s_input_charsetEnd PropertyPrivate Function LShift(lValue, iShiftBits)If iShiftBits = 0 ThenLShift = lValueExit FunctionElseIf iShiftBits = 31 ThenIf lValue And 1 ThenLShift = &H80000000ElseLShift = 0End IfExit FunctionElseIf iShiftBits < 0 Or iShiftBits > 31 ThenErr.Raise 6End IfIf (lValue And m_l2Power(31 - iShiftBits)) ThenLShift = ((lValue And m_lOnBits(31 - (iShiftBits + 1))) * m_l2Power(iShiftBits)) Or &H80000000ElseLShift = ((lValue And m_lOnBits(31 - iShiftBits)) * m_l2Power(iShiftBits))End IfEnd FunctionPrivate Function str2bin(varstr) Dim varascDim iDim varcharDim varlowDim varhighstr2bin="" For i=1 To Len(varstr) varchar=mid(varstr,i,1) varasc = Asc(varchar) If varasc<0 Then varasc = varasc + 65535 End If If varasc>255 Then varlow = Left(Hex(Asc(varchar)),2) varhigh = right(Hex(Asc(varchar)),2) str2bin = str2bin & chrB("&H" & varlow) & chrB("&H" & varhigh) Else str2bin = str2bin & chrB(AscB(varchar)) End If Next End Function Private Function str2bin_utf(varstr)Dim varchar, code, codearr, j, istr2bin_utf = ""For i=1 To Len(varstr)varchar = Mid(varstr,i,1)code = Server.UrlEncode(varchar)If(code="+") Then code="%20"If Len(code) = 1 Then str2bin_utf = str2bin_utf & chrB(AscB(code))Else codearr = Split(code,"%") For j = 1 to UBound(codearr)str2bin_utf = str2bin_utf & ChrB("&H" & codearr(j)) Next End IfNextEnd FunctionPrivate Function RShift(lValue, iShiftBits)If iShiftBits = 0 ThenRShift = lValueExit FunctionElseIf iShiftBits = 31 ThenIf lValue And &H80000000 ThenRShift = 1ElseRShift = 0End IfExit FunctionElseIf iShiftBits < 0 Or iShiftBits > 31 ThenErr.Raise 6End IfRShift = (lValue And &H7FFFFFFE) \ m_l2Power(iShiftBits)If (lValue And &H80000000) ThenRShift = (RShift Or (&H40000000 \ m_l2Power(iShiftBits - 1)))End IfEnd FunctionPrivate Function RotateLeft(lValue, iShiftBits)RotateLeft = LShift(lValue, iShiftBits) Or RShift(lValue, (32 - iShiftBits))End FunctionPrivate Function AddUnsigned(lX, lY)Dim lX4Dim lY4Dim lX8Dim lY8Dim lResultlX8 = lX And &H80000000lY8 = lY And &H80000000lX4 = lX And &H40000000lY4 = lY And &H40000000lResult = (lX And &H3FFFFFFF) + (lY And &H3FFFFFFF)If lX4 And lY4 ThenlResult = lResult Xor &H80000000 Xor lX8 Xor lY8ElseIf lX4 Or lY4 ThenIf lResult And &H40000000 ThenlResult = lResult Xor &HC0000000 Xor lX8 Xor lY8ElselResult = lResult Xor &H40000000 Xor lX8 Xor lY8End IfElselResult = lResult Xor lX8 Xor lY8End IfAddUnsigned = lResultEnd FunctionPrivate Function md5_F(x, y, z)md5_F = (x And y) Or ((Not x) And z)End FunctionPrivate Function md5_G(x, y, z)md5_G = (x And z) Or (y And (Not z))End FunctionPrivate Function md5_H(x, y, z)md5_H = (x Xor y Xor z)End FunctionPrivate Function md5_I(x, y, z)md5_I = (y Xor (x Or (Not z)))End FunctionPrivate Sub md5_FF(a, b, c, d, x, s, ac)a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_F(b, c, d), x), ac))a = RotateLeft(a, s)a = AddUnsigned(a, b)End SubPrivate Sub md5_GG(a, b, c, d, x, s, ac)a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_G(b, c, d), x), ac))a = RotateLeft(a, s)a = AddUnsigned(a, b)End SubPrivate Sub md5_HH(a, b, c, d, x, s, ac)a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_H(b, c, d), x), ac))a = RotateLeft(a, s)a = AddUnsigned(a, b)End SubPrivate Sub md5_II(a, b, c, d, x, s, ac)a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_I(b, c, d), x), ac))a = RotateLeft(a, s)a = AddUnsigned(a, b)End SubPrivate Function ConvertToWordArray(sMessage)Dim lMessageLengthDim lNumberOfWordsDim lWordArray()Dim lBytePositionDim lByteCountDim lWordCountConst MODULUS_BITS = 512Const CONGRUENT_BITS = 448lMessageLength = LenB(sMessage)lNumberOfWords = (((lMessageLength + ((MODULUS_BITS - CONGRUENT_BITS) \ BITS_TO_A_BYTE)) \ (MODULUS_BITS \ BITS_TO_A_BYTE)) + 1) * (MODULUS_BITS \ BITS_TO_A_WORD)ReDim lWordArray(lNumberOfWords - 1)lBytePosition = 0lByteCount = 0Do Until lByteCount >= lMessageLengthlWordCount = lByteCount \ BYTES_TO_A_WORDlBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTElWordArray(lWordCount) = lWordArray(lWordCount) Or LShift(AscB(MidB(sMessage, lByteCount + 1, 1)), lBytePosition)lByteCount = lByteCount + 1LooplWordCount = lByteCount \ BYTES_TO_A_WORDlBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTElWordArray(lWordCount) = lWordArray(lWordCount) Or LShift(&H80, lBytePosition)lWordArray(lNumberOfWords - 2) = LShift(lMessageLength, 3)lWordArray(lNumberOfWords - 1) = RShift(lMessageLength, 29)ConvertToWordArray = lWordArrayEnd FunctionPrivate Function WordToHex(lValue)Dim lByteDim lCountFor lCount = 0 To 3lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1)WordToHex = WordToHex & Right("0" & Hex(lByte), 2)NextEnd FunctionPublic Function MD5(sMessage)m_lOnBits(0) = CLng(1)m_lOnBits(1) = CLng(3)m_lOnBits(2) = CLng(7)m_lOnBits(3) = CLng(15)m_lOnBits(4) = CLng(31)m_lOnBits(5) = CLng(63)m_lOnBits(6) = CLng(127)m_lOnBits(7) = CLng(255)m_lOnBits(8) = CLng(511)m_lOnBits(9) = CLng(1023)m_lOnBits(10) = CLng(2047)m_lOnBits(11) = CLng(4095)m_lOnBits(12) = CLng(8191)m_lOnBits(13) = CLng(16383)m_lOnBits(14) = CLng(32767)m_lOnBits(15) = CLng(65535)m_lOnBits(16) = CLng(131071)m_lOnBits(17) = CLng(262143)m_lOnBits(18) = CLng(524287)m_lOnBits(19) = CLng(1048575)m_lOnBits(20) = CLng(2097151)m_lOnBits(21) = CLng(4194303)m_lOnBits(22) = CLng(8388607)m_lOnBits(23) = CLng(16777215)m_lOnBits(24) = CLng(33554431)m_lOnBits(25) = CLng(67108863)m_lOnBits(26) = CLng(134217727)m_lOnBits(27) = CLng(268435455)m_lOnBits(28) = CLng(536870911)m_lOnBits(29) = CLng(1073741823)m_lOnBits(30) = CLng(2147483647)m_l2Power(0) = CLng(1)m_l2Power(1) = CLng(2)m_l2Power(2) = CLng(4)m_l2Power(3) = CLng(8)m_l2Power(4) = CLng(16)m_l2Power(5) = CLng(32)m_l2Power(6) = CLng(64)m_l2Power(7) = CLng(128)m_l2Power(8) = CLng(256)m_l2Power(9) = CLng(512)m_l2Power(10) = CLng(1024)m_l2Power(11) = CLng(2048)m_l2Power(12) = CLng(4096)m_l2Power(13) = CLng(8192)m_l2Power(14) = CLng(16384)m_l2Power(15) = CLng(32768)m_l2Power(16) = CLng(65536)m_l2Power(17) = CLng(131072)m_l2Power(18) = CLng(262144)m_l2Power(19) = CLng(524288)m_l2Power(20) = CLng(1048576)m_l2Power(21) = CLng(2097152)m_l2Power(22) = CLng(4194304)m_l2Power(23) = CLng(8388608)m_l2Power(24) = CLng(16777216)m_l2Power(25) = CLng(33554432)m_l2Power(26) = CLng(67108864)m_l2Power(27) = CLng(134217728)m_l2Power(28) = CLng(268435456)m_l2Power(29) = CLng(536870912)m_l2Power(30) = CLng(1073741824)Dim xDim kDim AADim BBDim CCDim DDDim aDim bDim cDim dConst S11 = 7Const S12 = 12Const S13 = 17Const S14 = 22Const S21 = 5Const S22 = 9Const S23 = 14Const S24 = 20Const S31 = 4Const S32 = 11Const S33 = 16Const S34 = 23Const S41 = 6Const S42 = 10Const S43 = 15Const S44 = 21If LCase(s_input_charset) = "utf-8" Then x = ConvertToWordArray(str2bin_utf(sMessage))Elsex = ConvertToWordArray(str2bin(sMessage))End Ifa = &H67452301b = &HEFCDAB89c = &H98BADCFEd = &H10325476For k = 0 To UBound(x) Step 16AA = aBB = bCC = cDD = dmd5_FF a, b, c, d, x(k + 0), S11, &HD76AA478md5_FF d, a, b, c, x(k + 1), S12, &HE8C7B756md5_FF c, d, a, b, x(k + 2), S13, &H242070DBmd5_FF b, c, d, a, x(k + 3), S14, &HC1BDCEEEmd5_FF a, b, c, d, x(k + 4), S11, &HF57C0FAFmd5_FF d, a, b, c, x(k + 5), S12, &H4787C62Amd5_FF c, d, a, b, x(k + 6), S13, &HA8304613md5_FF b, c, d, a, x(k + 7), S14, &HFD469501md5_FF a, b, c, d, x(k + 8), S11, &H698098D8md5_FF d, a, b, c, x(k + 9), S12, &H8B44F7AFmd5_FF c, d, a, b, x(k + 10), S13, &HFFFF5BB1md5_FF b, c, d, a, x(k + 11), S14, &H895CD7BEmd5_FF a, b, c, d, x(k + 12), S11, &H6B901122md5_FF d, a, b, c, x(k + 13), S12, &HFD987193md5_FF c, d, a, b, x(k + 14), S13, &HA679438Emd5_FF b, c, d, a, x(k + 15), S14, &H49B40821md5_GG a, b, c, d, x(k + 1), S21, &HF61E2562md5_GG d, a, b, c, x(k + 6), S22, &HC040B340md5_GG c, d, a, b, x(k + 11), S23, &H265E5A51md5_GG b, c, d, a, x(k + 0), S24, &HE9B6C7AAmd5_GG a, b, c, d, x(k + 5), S21, &HD62F105Dmd5_GG d, a, b, c, x(k + 10), S22, &H2441453md5_GG c, d, a, b, x(k + 15), S23, &HD8A1E681md5_GG b, c, d, a, x(k + 4), S24, &HE7D3FBC8md5_GG a, b, c, d, x(k + 9), S21, &H21E1CDE6md5_GG d, a, b, c, x(k + 14), S22, &HC33707D6md5_GG c, d, a, b, x(k + 3), S23, &HF4D50D87md5_GG b, c, d, a, x(k + 8), S24, &H455A14EDmd5_GG a, b, c, d, x(k + 13), S21, &HA9E3E905md5_GG d, a, b, c, x(k + 2), S22, &HFCEFA3F8md5_GG c, d, a, b, x(k + 7), S23, &H676F02D9md5_GG b, c, d, a, x(k + 12), S24, &H8D2A4C8Amd5_HH a, b, c, d, x(k + 5), S31, &HFFFA3942md5_HH d, a, b, c, x(k + 8), S32, &H8771F681md5_HH c, d, a, b, x(k + 11), S33, &H6D9D6122md5_HH b, c, d, a, x(k + 14), S34, &HFDE5380Cmd5_HH a, b, c, d, x(k + 1), S31, &HA4BEEA44md5_HH d, a, b, c, x(k + 4), S32, &H4BDECFA9md5_HH c, d, a, b, x(k + 7), S33, &HF6BB4B60md5_HH b, c, d, a, x(k + 10), S34, &HBEBFBC70md5_HH a, b, c, d, x(k + 13), S31, &H289B7EC6md5_HH d, a, b, c, x(k + 0), S32, &HEAA127FAmd5_HH c, d, a, b, x(k + 3), S33, &HD4EF3085md5_HH b, c, d, a, x(k + 6), S34, &H4881D05md5_HH a, b, c, d, x(k + 9), S31, &HD9D4D039md5_HH d, a, b, c, x(k + 12), S32, &HE6DB99E5md5_HH c, d, a, b, x(k + 15), S33, &H1FA27CF8md5_HH b, c, d, a, x(k + 2), S34, &HC4AC5665md5_II a, b, c, d, x(k + 0), S41, &HF4292244md5_II d, a, b, c, x(k + 7), S42, &H432AFF97md5_II c, d, a, b, x(k + 14), S43, &HAB9423A7md5_II b, c, d, a, x(k + 5), S44, &HFC93A039md5_II a, b, c, d, x(k + 12), S41, &H655B59C3md5_II d, a, b, c, x(k + 3), S42, &H8F0CCC92md5_II c, d, a, b, x(k + 10), S43, &HFFEFF47Dmd5_II b, c, d, a, x(k + 1), S44, &H85845DD1md5_II a, b, c, d, x(k + 8), S41, &H6FA87E4Fmd5_II d, a, b, c, x(k + 15), S42, &HFE2CE6E0md5_II c, d, a, b, x(k + 6), S43, &HA3014314md5_II b, c, d, a, x(k + 13), S44, &H4E0811A1md5_II a, b, c, d, x(k + 4), S41, &HF7537E82md5_II d, a, b, c, x(k + 11), S42, &HBD3AF235md5_II c, d, a, b, x(k + 2), S43, &H2AD7D2BBmd5_II b, c, d, a, x(k + 9), S44, &HEB86D391a = AddUnsigned(a, AA)b = AddUnsigned(b, BB)c = AddUnsigned(c, CC)d = AddUnsigned(d, DD)NextMD5 = LCase(WordToHex(a) & WordToHex(b) & WordToHex(c) & WordToHex(d))End FunctionEnd Class%>
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