超精華的asp代碼大全
更新時(shí)間:2006年12月26日 00:00:00 投稿:mdxy-dxy
這篇文章主要為大家分享幾個(gè)超精華的asp代碼,學(xué)習(xí)asp的朋友可以參考一下
列出你的所有Session變:
<%@ Language=VBScript %>
<% Option Explicit %>
<%
Response.Write "在你的程序中一共使用了 " & Session.Contents.Count & _
" 個(gè)Session變量<P>"
Dim strName, iLoop
For Each strName in Session.Contents
'判斷一個(gè)Session變量是否為數(shù)組
If IsArray(Session(strName)) then
'如果是數(shù)組,那么羅列出所有的數(shù)組元素內(nèi)容
For iLoop = LBound(Session(strName)) to UBound(Session(strName))
Response.Write strName & "(" & iLoop & ") - " & _
Session(strName)(iLoop) & "<BR>"
Next
Else
'如果不是數(shù)組,那么直接顯示
Response.Write strName & " - " & Session.Contents(strName) & "<BR>"
End If
Next
%>
利用CDONTS發(fā)送郵件的ASP函數(shù)
<%
'Last Updated By Recon On 05/14/2001
'On Error Resume Next
'利用CDONTS組件在Win2k上發(fā)送郵件
'發(fā)送普通郵件
SendMail "admin@ny.com", "iamchn@263.net", "Normal Mail!", "Please check the attatchment!", 2, 0, "C:\Love.txt"
'發(fā)送HTML郵件
Dim m_fso, m_tf
Dim m_strHTML
Set m_fso = Server.CreateObject("SCRIPTING.FILESYSTEMOBJECT")
Set m_tf = m_fso.OpenTextFile("C:\Mail.htm", 1)
m_strHTML = m_tf.ReadAll
'Write m_strHTML
Set m_tf = Nothing
Set m_fso = Nothing
SendMail "admin@ny.com", "iamchn@263.net", "HTML Mail!", m_strHTML, 2, 1, Null
'參數(shù)說(shuō)明
'strFrom : 發(fā)件人Email
'strTo : 收件人Email
'strSubject : 信件主題
'strBody : 信件正文
'lngImportance : 信件重要性
' : 0 - 低重要性
' : 0 - 中等重要性(默認(rèn))
' : 0 - 高重要性
'lngAType : 信件格式
' : 為1時(shí)將郵件正文作為HTML(此時(shí)可以發(fā)送HTML郵件)
'strAttach : 附件的路徑
Sub SendMail(strFrom, strTo, strSubject, strBody, lngImportance, lngAType, strAttach)
Dim objMail
Set objMail = Server.CreateObject("CDONTS.NEWMAIL")
With objMail
.From = strFrom
.To = strTo
.Subject = strSubject
.Body = strBody
.Importance = lngImportance
If lngAType = 1 Then
.BodyFormat = 0
.MailFormat = 0
End If
If IsEmpty(strAttach) = False And IsNull(strAttach) = False Then
.AttachFile strAttach
End If
.Send
End With
Set objMail = Nothing
End Sub
%>
處理驅(qū)動(dòng)器和文件夾
使用 FileSystemObject (FSO) 對(duì)象模式,可以有計(jì)劃地處理驅(qū)動(dòng)器和文件夾,就像在 Windows 資源管理器中交互式地處理它們一樣??梢詮?fù)制和移動(dòng)文件夾,獲取有關(guān)驅(qū)動(dòng)器和文件夾的信息,等等。
獲取有關(guān)驅(qū)動(dòng)器的信息
可以用 Drive 對(duì)象來(lái)獲得有關(guān)各種驅(qū)動(dòng)器的信息,這些驅(qū)動(dòng)器是實(shí)物地或通過(guò)網(wǎng)絡(luò)連接到系統(tǒng)上的。它的屬性可以用來(lái)獲得下面的信息內(nèi)容:
驅(qū)動(dòng)器的總?cè)萘?,以字?jié)為單位(TotalSize 屬性)
驅(qū)動(dòng)器的可用空間是多少,以字節(jié)為單位(AvailableSpace 或 FreeSpace 屬性)
哪個(gè)號(hào)被賦給了該驅(qū)動(dòng)器(DriveLetter 屬性)
驅(qū)動(dòng)器的類(lèi)型是什么,如可移動(dòng)的、固定的、網(wǎng)絡(luò)的、CD-ROM 或 RAM 磁盤(pán)(DriveType 屬性)
驅(qū)動(dòng)器的序列號(hào)(SerialNumber 屬性)
驅(qū)動(dòng)器使用的文件系統(tǒng)類(lèi)型,如 FAT、FAT32、NTFS 等等(FileSystem 屬性)
驅(qū)動(dòng)器是否可以使用(IsReady 屬性)
共享和/或卷的名字(ShareName 和 VolumeName 屬性)
驅(qū)動(dòng)器的路徑或根文件夾(Path 和 RootFolder 屬性)
請(qǐng)考察示例代碼,來(lái)領(lǐng)會(huì)如何在 FileSystemObject 中使用這些屬性。
Drive 對(duì)象用法示例
使用 Drive 對(duì)象來(lái)收集有關(guān)驅(qū)動(dòng)器的信息。在下面的代碼中,沒(méi)有對(duì)實(shí)際的 Drive 對(duì)象的引用;相反,使用 GetDrive 方法來(lái)獲得現(xiàn)有 Drive 對(duì)象的引用(在這個(gè)例子中就是 drv)。
下面示例示范了如何在 VBScript 中使用 Drive 對(duì)象:
Sub ShowDriveInfo(drvPath)
Dim fso, drv, s
Set fso = CreateObject("Scripting.FileSystemObject")
Set drv = fso.GetDrive(fso.GetDriveName(drvPath))
s = "Drive " & UCase(drvPath) & " - "
s = s & drv.VolumeName & "<br/>"
s = s & "Total Space: " & FormatNumber(drv.TotalSize / 1024, 0)
s = s & " Kb" & "<br/>"
s = s & "Free Space: " & FormatNumber(drv.FreeSpace / 1024, 0)
s = s & " Kb" & "<br/>"
Response.Write s
End Sub
下面的代碼說(shuō)明在 JScript 中實(shí)現(xiàn)同樣的功能:
function ShowDriveInfo1(drvPath)
{
var fso, drv, s ="";
fso = new ActiveXObject("Scripting.FileSystemObject");
drv = fso.GetDrive(fso.GetDriveName(drvPath));
s += "Drive " + drvPath.toUpperCase()+ " - ";
s += drv.VolumeName + "<br/>";
s += "Total Space: " + drv.TotalSize / 1024;
s += " Kb" + "<br/>";
s += "Free Space: " + drv.FreeSpace / 1024;
s += " Kb" + "<br/>";
Response.Write(s);
}
處理文件夾
在下面的表中,描述了普通的文件夾任務(wù)和執(zhí)行它們的方法。
任務(wù) 方法
創(chuàng)建文件夾。 FileSystemObject.CreateFolder
刪除文件夾。 Folder.Delete 或 FileSystemObject.DeleteFolder
移動(dòng)文件夾。 Folder.Move 或 FileSystemObject.MoveFolder
復(fù)制文件夾。 Folder.Copy 或 FileSystemObject.CopyFolder
檢索文件夾的名字。 Folder.Name
如果文件夾在驅(qū)動(dòng)器上存在,則找出它。 FileSystemObject.FolderExists
獲得現(xiàn)有 Folder 對(duì)象的實(shí)例。 FileSystemObject.GetFolder
找出文件夾的父文件夾名。 FileSystemObject.GetParentFolderName
找出系統(tǒng)文件夾的路徑。 FileSystemObject.GetSpecialFolder
請(qǐng)考察示例代碼,來(lái)看看在 FileSystemObject 中使用了多少種這些的方法和屬性。
下面的示例示范了如何在 VBScript 中使用 Folder 和 FileSystemObject 對(duì)象,來(lái)操作文件夾和獲得有關(guān)它們的信息:
Sub ShowFolderInfo()
Dim fso, fldr, s
' 獲得 FileSystemObject 的實(shí)例。
Set fso = CreateObject("Scripting.FileSystemObject")
' 獲得 Drive 對(duì)象。
Set fldr = fso.GetFolder("c:")
' 打印父文件夾名字。
Response.Write "Parent folder name is: " & fldr & "<br/>"
' 打印驅(qū)動(dòng)器名字。
Response.Write "Contained on drive " & fldr.Drive & "<br/>"
' 打印根文件名。
If fldr.IsRootFolder = True Then
Response.Write "This is the root folder." & ""<br/>"<br/>"
Else
Response.Write "This folder isn't a root folder." & "<br/><br/>"
End If
' 用 FileSystemObject 對(duì)象創(chuàng)建新的文件夾。
fso.CreateFolder ("C:\Bogus")
Response.Write "Created folder C:\Bogus" & "<br/>"
' 打印文件夾的基本名字。
Response.Write "Basename = " & fso.GetBaseName("c:\bogus") & "<br/>"
' 刪除新創(chuàng)建的文件夾。
fso.DeleteFolder ("C:\Bogus")
Response.Write "Deleted folder C:\Bogus" & "<br/>"
End Sub
下面的示例顯示如何在 JScript 中使用 Folder 和 FileSystemObject 對(duì)象:
function ShowFolderInfo()
{
var fso, fldr, s = "";
// 獲得 FileSystemObject 的實(shí)例。
fso = new ActiveXObject("Scripting.FileSystemObject");
// 獲得 Drive 對(duì)象。
fldr = fso.GetFolder("c:");
// 打印父文件夾名。
Response.Write("Parent folder name is: " + fldr + "<br/>");
// 打印驅(qū)動(dòng)器名字。
Response.Write("Contained on drive " + fldr.Drive + "<br/>");
// 打印根文件名。
if (fldr.IsRootFolder)
Response.Write("This is the root folder.");
else
Response.Write("This folder isn't a root folder.");
Response.Write("<br/><br/>");
// 用 FileSystemObject 對(duì)象創(chuàng)建新的文件夾。
fso.CreateFolder ("C:\\Bogus");
Response.Write("Created folder C:\\Bogus" + "<br/>");
// 打印文件夾的基本名。
Response.Write("Basename = " + fso.GetBaseName("c:\\bogus") + "<br/>");
// 刪除新創(chuàng)建的文件夾。
fso.DeleteFolder ("C:\\Bogus");
Response.Write("Deleted folder C:\\Bogus" + "<br/>");
}
ASP分頁(yè)函數(shù)
Function ExportPageInfo(ByRef rs,curpage,i,LinkFile)
Dim retval, j, pageNumber, BasePage
retval = "第" & curpage & "頁(yè)/總" & rs.pagecount & "頁(yè) "
retval = retval & "本頁(yè)" & i & "條/總" & rs.recordcount & "條 "
If curpage = 1 Then
retval = retval & "首頁(yè) 前頁(yè) "
Else
retval = retval & "<a href='" & LinkFile & "page=1'>首頁(yè)</a> <a href='" & LinkFile & "page=" & cstr(curpage - 1) & "'>前頁(yè)</a> "
End If
If curpage = rs.pagecount Then
retval = retval & "后頁(yè) 末頁(yè)"
Else
retval = retval & "<a href='" & LinkFile & "page=" & cstr(curpage + 1) & "'>后頁(yè)</a> <a href='" & LinkFile & "page=" & cstr(rs.pagecount) & "'>末頁(yè)</a>"
End if
retval = retval & "<br/>"
BasePage = (curpage \ 10) * 10
If BasePage > 0 Then retval = retval & " <a href='" & LinkFile & "page=" & (BasePage - 9) & "'><<</a>"
For j = 1 to 10
pageNumber = BasePage + j
If PageNumber > rs.pagecount Then Exit For
If pageNumber = Cint(curpage) Then
retval = retval & " <font color='#FF0000'>" & pageNumber & "</font>"
Else
retval = retval & " <a href='" & LinkFile & "page=" & pageNumber & "'>" & pageNumber & "</a>"
End If
Next
If rs.pagecount > BasePage Then retval = retval & " <a href='" & LinkFile & "page=" & (BasePage + 11) & "'>>></a>"
ExportPageInfo = retval
End Function
應(yīng)用
<%
adoPageRS.open "SELECT * FROM news ORDER BY addtime DESC", conn, 1, 1
if err.number <> 0 then
response.write "數(shù)據(jù)庫(kù)操作失?。?&err.description
else
if adoPageRS.eof and adoPageRS.bof then
response.write "沒(méi)有記錄"
else
%>
<div align="center">
<center>
<table width="100%" border="0" cellspacing="1" cellpadding="2">
<tr class="big">
<td width="60%">新 聞 標(biāo) 題</td>
<td width="25%" align="center">日期</td>
<td width="15%" align="center">操 作</td>
</tr>
<%
adoPageRS.pagesize = 10
adoPageRS.absolutepage = curpage
for i = 0 to 9
%>
<tr>
<td><%= adoPageRS("title") %></td>
<td align="center">
<% = adoPageRS("addtime") %>
</td>
<td align="center"><a href='newsman.asp?action=edit&id=<%= adoPageRS("id")%>'>編輯</a>
<a href='javascript:confirmDel(<%= adoPageRS("id") %>)'>刪除</a></td>
</tr>
<%
adoPageRS.movenext
if adoPageRS.eof then
i = i + 1
exit for
End If
next
%>
<tr align="center">
<td colspan="3">
<% = ExportPageInfo(adoPageRS, curpage, i, "Newsman.asp?") %>
</td>
</tr>
</table>
</center>
</div>
從ASP調(diào)用SQL中的圖像:
如何處理ASP中的圖象 在用ASP編程中,很多時(shí)侯要用到圖象。對(duì)于單純從數(shù)據(jù)庫(kù)中處理一個(gè)圖象,方法大家講了很多,也不難, 可以看下面的代碼: 這里假設(shè)你有個(gè)數(shù)據(jù)庫(kù)名字叫:PUBS,在數(shù)據(jù)庫(kù)中有一個(gè)叫:PUB_INFO的表,在表中有一個(gè)LOGO 的BLOB列。我們查出PUB_ID=0736的人的相片。 FILE: SHOWIMG.ASP *************************************** < %@ LANGUAGE="VBSCRIPT" %> < % ' Clear out the existing HTTP header information Response.Expires = 0 Response.Buffer = TRUE Response.Clear ' Change the HTTP header to reflect that an image is being passed. Response.ContentType = "image/gif" Set cn = Server.CreateObject("ADODB.Connection") ' The following open line assumes you have set up a System DataSource ' by the name of myDSN. cn.Open "DSN=myDSN;UID=sa;PWD=;DATABASE=pubs" Set rs = cn.Execute("SELECT logo FROM pub_info WHERE pub_id='0736'") Response.BinaryWrite rs("logo") Response.End %> ***************************************** 執(zhí)行這個(gè)ASP文件就可以看到你存在數(shù)據(jù)庫(kù)中的圖象了。 但如果是同時(shí)處理文字和圖象就會(huì)有些困難了:-( 比如:一個(gè)企業(yè)的人員管理,后臺(tái)數(shù)據(jù)庫(kù)可以用SYBASE或SQL SERVER等。(我在這用SQL SERVER)當(dāng) 你在企業(yè)內(nèi)部需要用到BROWSE/SERVER方式,即用瀏覽器查看員工的個(gè)人信息時(shí),就即要處理文字信息同時(shí) 還要用到關(guān)于圖象的技巧。 問(wèn)題在于你顯示文字信息時(shí)HTML的HEAD中的CONTENT=“TEXT/HTML”,而顯示圖象則必須是 CONTENT=“IMAGE/GIF”或者是CONTENT=”IMAGE/JPEG“。因此你是無(wú)法只用一個(gè)ASP文件就把文字信息和 圖象都處理完的,解決的辦法是:用一個(gè)單獨(dú)的ASP文件處理圖象,然后在處理文字信息的ASP文件中調(diào)用 這個(gè)ASP文件。 在這給大家介紹一個(gè)我的解決方法,希望大家一起討論: 環(huán)境:WINNT4.0 SQL SERVER IIS3.0 數(shù)據(jù)庫(kù)名:RSDA 表名:RSDA_TABLE 目的:從RSDA_TABLE中查出ID=00001的人員的信息,包括姓名,年齡和照片 第一步:創(chuàng)建一個(gè)查詢表單RSDA.HTM: ********************************** < html> < head> < /head> < body> < form method="POST" action="SEARCH.ASP"> < p>請(qǐng)輸入編號(hào):< input type="text" name="T1" size="20"> < input type="submit" value="提交" name="B1"> < /form> < /body> *********************************** 第二步:建立SEARCH.ASP *********************************** < html> < head> < meta http-equiv="content-type" content="text/html;charset=gb2312"> < title>查詢結(jié)果< /title> < /head> < body bgColor=Azure> < % session("RSDA_ID")=Request.Form("T1") '這里我用了一個(gè)SESSION變量,是為了在處理圖象的ASP文件中再次調(diào)用 temp_id=session("RSDA_ID") < font size=4 color=OrangeRed> 查詢結(jié)果:< /font> < %set conntemp=server.createobject("adodb.connection") conntemp.open "dsn=RSDA;uid=sa;pwd=SA" set rstemp=conntemp.execute("select * from RSDA_TABLE where rsda='"&temp_id&"'") % > < % 'put headings on the table of field names nobody="對(duì)不起!在我們的數(shù)據(jù)庫(kù)里沒(méi)有您要找的資料!"%> '判斷是否有這個(gè)人 < %if rstemp.eof then % > < font size="5" color=OrangeRed> < %Response.Write(nobody)% >< /font> < %else% > < div align="center"> < center> < table border="1" width="73%" height="399"> < tr> < td width="21%" height="49" align="center">< p align="center">姓 名< /td> < td width="30%" height="49" align="center"> < font size=4 color=OrangeRed>< /font>< /td> < /td> < tr> < p align="center">年 齡< /td> < td width="30%" height="47" align="center"> < font size=4 color=OrangeRed>< %=rstemp(0)% >< /font>< /td> < /tr> < tr> < td width="49%" height="146" rowspan="3" colspan="2"> < img src="jpg.asp">< /td> 'JPG.ASP就是我們將要建立的專(zhuān)門(mén)處理圖象的ASP文件 < /tr> < /table> < /center>< /div> rstemp.close set rstemp=nothing conntemp.close set conntemp=nothing % > < /BODY> < /HTML> *********************************** 第三步:建立處理圖象的ASP文件。(JPG.ASP) *********************************** < % Response.Expires = 0 Response.Buffer = TRUE Response.Clear ' Open database Set conntemp = Server.CreateObject("ADODB.Connection") conntemp.open "dsn=RSDA;uid=sa;pwd=SA" 'change http header Response.ContentType = "image/jpeg" ' or "IMAGE/GIF" ' Get picture TEMP_ID=session("RSDA_ID") Set Rs = conntemp.Execute("SELECT photo from RSDA_table where ID='"&TEMP_ID&"'") Response.BinaryWrite Rs("photo") Session.Abandon Response.End % > ********************************** 這里主要就是用到了一個(gè)小技巧就是利用了一個(gè)SESSION變量來(lái)實(shí)現(xiàn)兩次同條件查詢。 大家如我上述只需少量改動(dòng),就可以實(shí)現(xiàn)一個(gè)頁(yè)面既有文字又有圖象了!
asp常常用到的一些東西,
我做東西一般下面的東西經(jīng)常用(拷貝)
<%=Request.ServerVariables("remote_addr")%>
FOR each item in Request.form
tempvalue=trim(Request(item))
tempvalue=Replace(tempvalue,chr(13)&chr(10),"<br/>")
tempvalue=Replace(tempvalue,"<br/><br/>","<br/>")
if tempvalue="" then tempvalue=0
Execute item&"="""&tempvalue&""""
'response.write item&"="&tempvalue&"<br/>"
next
'response.write request("id")
'response.end
if ="" then
response.write "<script language='JavaScript'>window.alert('')</script>"
response.write "<script language='JavaScript'>window.history.go(-1);</script>"
response.end
end if
<!--#include file="" -->
<!--#include virtual="" -->
sql="select max(id) from pack"
set RS=conn.execute(sql)
if isnull(RS(0)) then
id=1
else
id=RS(0)+1
end if
set rs=nothing
sql="insert into pack(id,strpackdm,strusername) values("&id&",'"&strpackdm&"','"&Session("username")&"')"
set RS=conn.execute(sql)
sql="update pack set "&Itemname&"='"&tempvalue&"' where id="&id&""
if Itemname<>"id" then
response.write sql&"<br/>"
set rs=conn.execute(sql)
if err.number<>0 then
'錯(cuò)誤處理
response.write "數(shù)據(jù)庫(kù)操作失?。? & err.description
err.clear
end if
Set rs=Nothing
Conn.close
Set conn=Nothing
do while not rs.eof and rowcount>0
rowcount=rowcount-1
rs.MoveNext
do while not rs.eof
rs.MoveNext
loop
for each item in rs2.fields
Execute item.name&"="""&trim(rs2(""&item.name&""))&""""
next
function Mycn(str)
str=lcase(str)
str=replace(str,"","")
response.write str
end function
dim conn
dim connstr
on error resume next
set conn=server.CreateObject("adodb.connection")
Connstr="driver=SQL Server; server="&servername&"; uid="&username&"; pwd="&password&"; database="&datebasename&";"
Connstr="DBQ="+server.mappath(mydbpath&mdbname)+";DRIVER={Microsoft Access Driver (*.mdb)};"
'response.write Connstr
'response.end
conn.Open connstr
if err<>0 then
Response.Write "無(wú)法建立到數(shù)據(jù)庫(kù)的連接!"
end if
MD5不可逆加密算法的ASP實(shí)現(xiàn)實(shí)例(一)
此為國(guó)外轉(zhuǎn)載函數(shù),可將任意字符轉(zhuǎn)換為md5 16為字符加密形式,而且為不可逆轉(zhuǎn)換。
<%
Private Const BITS_TO_A_BYTE = 8
Private Const BYTES_TO_A_WORD = 4
Private Const BITS_TO_A_WORD = 32
Private m_lOnBits(30)
Private m_l2Power(30)
Private Function LShift(lValue, iShiftBits)
If iShiftBits = 0 Then
LShift = lValue
Exit Function
ElseIf iShiftBits = 31 Then
If lValue And 1 Then
LShift = &H80000000
Else
LShift = 0
End If
Exit Function
ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
Err.Raise 6
End If
If (lValue And m_l2Power(31 - iShiftBits)) Then
LShift = ((lValue And m_lOnBits(31 - (iShiftBits + 1))) * m_l2Power(iShiftBits)) Or &H80000000
Else
LShift = ((lValue And m_lOnBits(31 - iShiftBits)) * m_l2Power(iShiftBits))
End If
End Function
Private Function RShift(lValue, iShiftBits)
If iShiftBits = 0 Then
RShift = lValue
Exit Function
ElseIf iShiftBits = 31 Then
If lValue And &H80000000 Then
RShift = 1
Else
RShift = 0
End If
Exit Function
ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
Err.Raise 6
End If
RShift = (lValue And &H7FFFFFFE) \ m_l2Power(iShiftBits)
If (lValue And &H80000000) Then
RShift = (RShift Or (&H40000000 \ m_l2Power(iShiftBits - 1)))
End If
End Function
Private Function RotateLeft(lValue, iShiftBits)
RotateLeft = LShift(lValue, iShiftBits) Or RShift(lValue, (32 - iShiftBits))
End Function
Private Function AddUnsigned(lX, lY)
Dim lX4
Dim lY4
Dim lX8
Dim lY8
Dim lResult
lX8 = lX And &H80000000
lY8 = lY And &H80000000
lX4 = lX And &H40000000
lY4 = lY And &H40000000
lResult = (lX And &H3FFFFFFF) + (lY And &H3FFFFFFF)
If lX4 And lY4 Then
lResult = lResult Xor &H80000000 Xor lX8 Xor lY8
ElseIf lX4 Or lY4 Then
If lResult And &H40000000 Then
lResult = lResult Xor &HC0000000 Xor lX8 Xor lY8
Else
lResult = lResult Xor &H40000000 Xor lX8 Xor lY8
End If
Else
lResult = lResult Xor lX8 Xor lY8
End If
AddUnsigned = lResult
End Function
Private Function md5_F(x, y, z)
md5_F = (x And y) Or ((Not x) And z)
End Function
Private Function md5_G(x, y, z)
md5_G = (x And z) Or (y And (Not z))
End Function
Private Function md5_H(x, y, z)
md5_H = (x Xor y Xor z)
End Function
Private Function md5_I(x, y, z)
md5_I = (y Xor (x Or (Not z)))
End Function
Private 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,
End Sub
Private 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,
End Sub
Private 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,
End Sub
Private 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,
End Sub
Private Function ConvertToWordArray(sMessage)
Dim lMessageLength
Dim lNumberOfWords
Dim lWordArray()
Dim lBytePosition
Dim lByteCount
Dim lWordCount
Const MODULUS_BITS = 512
Const CONGRUENT_BITS = 448
lMessageLength = Len(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 = 0
lByteCount = 0
Do Until lByteCount >= lMessageLength
lWordCount = lByteCount \ BYTES_TO_A_WORD
lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE
lWordArray(lWordCount) = lWordArray(lWordCount) Or LShift(Asc(Mid(sMessage, lByteCount + 1, 1)), lBytePosition)
lByteCount = lByteCount + 1
Loop
lWordCount = lByteCount \ BYTES_TO_A_WORD
lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE
lWordArray(lWordCount) = lWordArray(lWordCount) Or LShift(&H80, lBytePosition)
lWordArray(lNumberOfWords - 2) = LShift(lMessageLength, 3)
lWordArray(lNumberOfWords - 1) = RShift(lMessageLength, 29)
ConvertToWordArray = lWordArray
End Function
Private Function WordToHex(lValue)
Dim lByte
Dim lCount
For lCount = 0 To 3
lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1)
WordToHex = WordToHex & Right("0" & Hex(lByte), 2)
Next
End Function
MD5不可逆加密算法的ASP實(shí)現(xiàn)實(shí)例(一)
--------------------------------------
Public 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 x
Dim k
Dim AA
Dim BB
Dim CC
Dim DD
Dim a
Dim b
Dim c
Dim d
Const S11 = 7
Const S12 = 12
Const S13 = 17
Const S14 = 22
Const S21 = 5
Const S22 = 9
Const S23 = 14
Const S24 = 20
Const S31 = 4
Const S32 = 11
Const S33 = 16
Const S34 = 23
Const S41 = 6
Const S42 = 10
Const S43 = 15
Const S44 = 21
x = ConvertToWordArray(sMessage)
a = &H67452301
b = &HEFCDAB89
c = &H98BADCFE
d = &H10325476
F
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