vbs base64 解密脚本代码
更新时间：2008年05月31日 13:03:13 作者：
解密base64的vbs小函数,支持英文与数字不支持中文。
复制代码 代码如下:
Function fDecode(sStringToDecode)
'This function will decode a Base64 encoded string and returns the decoded string.
'This becomes usefull when attempting to hide passwords from prying eyes.
Const CharList = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
Dim iDataLength, sOutputString, iGroupInitialCharacter
sStringToDecode = Replace(Replace(Replace(sStringToDecode, vbCrLf, ""), vbTab, ""), " ", "")
iDataLength = Len(sStringToDecode)
If iDataLength Mod 4 <> 0 Then
fDecode = "Bad string passed to fDecode() function."
Exit Function
End If
For iGroupInitialCharacter = 1 To iDataLength Step 4
Dim iDataByteCount, iCharacterCounter, sCharacter, iData, iGroup, sPreliminaryOutString
iDataByteCount = 3
iGroup = 0
For iCharacterCounter = 0 To 3
sCharacter = Mid(sStringToDecode, iGroupInitialCharacter + iCharacterCounter, 1)
If sCharacter = "=" Then
iDataByteCount = iDataByteCount - 1
iData = 0
Else
iData = InStr(1, CharList, sCharacter, 0) - 1
If iData = -1 Then
fDecode = "Bad string passed to fDecode() function."
Exit Function
End If
End If
iGroup = 64 * iGroup + iData
Next
iGroup = Hex(iGroup)
iGroup = String(6 - Len(iGroup), "0") & iGroup
sPreliminaryOutString = Chr(CByte("&H" & Mid(iGroup, 1, 2))) & Chr(CByte("&H" & Mid(iGroup, 3, 2))) & Chr(CByte("&H" & Mid(iGroup, 5, 2)))
sOutputString = sOutputString & Left(sPreliminaryOutString, iDataByteCount)
Next
fDecode = sOutputString
End Function
base64 测试代码：
复制代码 代码如下:
Function fDecode(sStringToDecode)
'This function will decode a Base64 encoded string and returns the decoded string.
'This becomes usefull when attempting to hide passwords from prying eyes.
Const CharList = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
Dim iDataLength, sOutputString, iGroupInitialCharacter
sStringToDecode = Replace(Replace(Replace(sStringToDecode, vbCrLf, ""), vbTab, ""), " ", "")
iDataLength = Len(sStringToDecode)
If iDataLength Mod 4 <> 0 Then
fDecode = "Bad string passed to fDecode() function."
Exit Function
End If
For iGroupInitialCharacter = 1 To iDataLength Step 4
Dim iDataByteCount, iCharacterCounter, sCharacter, iData, iGroup, sPreliminaryOutString
iDataByteCount = 3
iGroup = 0
For iCharacterCounter = 0 To 3
sCharacter = Mid(sStringToDecode, iGroupInitialCharacter + iCharacterCounter, 1)
If sCharacter = "=" Then
iDataByteCount = iDataByteCount - 1
iData = 0
Else
iData = InStr(1, CharList, sCharacter, 0) - 1
If iData = -1 Then
fDecode = "Bad string passed to fDecode() function."
Exit Function
End If
End If
iGroup = 64 * iGroup + iData
Next
iGroup = Hex(iGroup)
iGroup = String(6 - Len(iGroup), "0") & iGroup
sPreliminaryOutString = Chr(CByte("&H" & Mid(iGroup, 1, 2))) & Chr(CByte("&H" & Mid(iGroup, 3, 2))) & Chr(CByte("&H" & Mid(iGroup, 5, 2)))
sOutputString = sOutputString & Left(sPreliminaryOutString, iDataByteCount)
Next
fDecode = sOutputString
End Function
msgbox fDecode("d3d3LmpiNTEubmV0")
需要测试加密的代码的朋友可以访问 https://www.jb51.net/tools/base64.htm
相关文章
有时候我们需要获取当前目录下有多少个文件，那么就可以参考下面的代码2013-09-09
用来分割文本的vbs脚本，用来处理数据库中的文本代码，按行计算需要的朋友可以参考下。2010-11-11
MD5算法的VBS代码在网上可以找到很多，这些代码都是按照“算法”写出来的，所以都很长，更重要的是，找不到SHA1算法的VBS实现。2011-01-01
这个简短的脚本使用wmi显示与工具“tasklist”中相同的信息，但只有在命令行下输出结果。它也可以在另一台计算机上查看远程任务,需要的朋友可以参考下2019-04-04
VBS教程：函数-Eval 函数...2006-11-11
几段非常有用的脚本（来自微软网站,由downmoon精心收集）
几段非常有用的脚本（来自微软网站,由downmoon精心收集）...2007-03-03
vbscript LoadPicture函数使用方法与漏洞利用
因为有人说这里LoadPicture的代码有些问题，所以这里给修正下，方便需要的朋友2008-12-12
飘叶千夫指源代码，又称qq刷屏器...2006-10-10
vbs高手总结出来的，看来我们真忽略了他的真正强大的地方2008-07-07
脚本编程3 关于文件的读写...2007-02-02
最新评论