繁體中文当前位置: 首页 > 图文教程 > 网络编程 > ASP > 不错的主要用于加密的vbs(asp)位移运算类
- ASP
- Dom遍历XML的一个例子,结果为树状结构
- [原创]如何回到先前的页面的方法多中语言
- 几个经典的ASP应用
- pjblog实现类似CMS的首页调用
- PJblog友情链接LOGO地址失效的解决
- ASP程序给上传的图片增添水印效果!
- 127.0.0.1无法访问，没有权限: GetObject
- PJBLOG使用技巧
- ASP数据库连接方式大全
- ASP辅助代码
- 垃圾引用防治补丁以及发送引用修正补丁的自动安装程序
- 发一个采集(小偷)用的类，ASP+缓存实现
- 利用ASPUPLOAD，ASPJPEG实现图片上传自动生成缩略图及加上水印
- 后台管理登录篇-asp设计与数据库
- 使用Flash DownLoad编写采集器(之突破防盗连下载音乐文件)
- [原创]随机增加网站点击的一个不错的方法
- javascript asp教程第二课--转义字符
- javascript asp教程第三课 new String() 构造器
- javascript asp教程第六课-- response方法
- 简单的ASP中经常用到的代码[推荐]
ASP 中的 不错的主要用于加密的vbs(asp)位移运算类
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-13 浏览: 158 ::
收藏到网摘: n/a
<script language="vbscript">
' Aother: 奔腾的心
' QQ: 7180001
' Date: 2008-01-17
Class mShift
Private m_lPower2(31)
Public Function RShift(ByVal lThis, ByVal lBits)
On Error Resume Next
Init
If (lBits <= 0) Then
RShift = lThis
ElseIf (lBits > 63) Then
' .. error ...
ElseIf (lBits > 31) Then
RShift = 0
Else
If (lThis And m_lPower2(31 - lBits)) = m_lPower2(31 - lBits) Then
RShift = (lThis And (m_lPower2(31 - lBits) - 1)) * m_lPower2(lBits) Or
m_lPower2(31)
Else
RShift = (lThis And (m_lPower2(31 - lBits) - 1)) * m_lPower2(lBits)
End If
End If
End Function
Public Function LShift(ByVal lThis, ByVal lBits)
On Error Resume Next
Init
If (lBits <= 0) Then
LShift = lThis
ElseIf (lBits > 63) Then
' ... error ...
ElseIf (lBits > 31) Then
LShift = 0
Else
If (lThis And m_lPower2(31)) = m_lPower2(31) Then
LShift = (lThis And &H7FFFFFFF) \ m_lPower2(lBits) Or m_lPower2(31 - lBits)
Else
LShift = lThis \ m_lPower2(lBits)
End If
End If
End Function
Private Sub Init()
On Error Resume Next
m_lPower2(0) = &H1&
m_lPower2(1) = &H2&
m_lPower2(2) = &H4&
m_lPower2(3) = &H8&
m_lPower2(4) = &H10&
m_lPower2(5) = &H20&
m_lPower2(6) = &H40&
m_lPower2(7) = &H80&
m_lPower2(8) = &H100&
m_lPower2(9) = &H200&
m_lPower2(10) = &H400&
m_lPower2(11) = &H800&
m_lPower2(12) = &H1000&
m_lPower2(13) = &H2000&
m_lPower2(14) = &H4000&
m_lPower2(15) = &H8000&
m_lPower2(16) = &H10000
m_lPower2(17) = &H20000
m_lPower2(18) = &H40000
m_lPower2(19) = &H80000
m_lPower2(20) = &H100000
m_lPower2(21) = &H200000
m_lPower2(22) = &H400000
m_lPower2(23) = &H800000
m_lPower2(24) = &H1000000
m_lPower2(25) = &H2000000
m_lPower2(26) = &H4000000
m_lPower2(27) = &H8000000
m_lPower2(28) = &H10000000
m_lPower2(29) = &H20000000
m_lPower2(30) = &H40000000
m_lPower2(31) = &H80000000
End Sub
End Class
Dim sft
Set sft = New mShift
MsgBox sft.RShift(200, 4)
MsgBox sft.LShift(200, 4)
Set sft = Nothing
</script>
<script language="javascript">
alert(200<<4);
alert(200>>4);
</script>
评论 (0) All
