专用链接加解密 1.0 绿色版 下载地址
- 软件名称: 专用链接加解密
- 软件大小: 37KB [由于更新频繁，软件参数只作参考]
- 软件语言: 简体中文
- 软件类别: 国产软件 - 下载工具
- 运行环境: Win9x/Me/NT/2000/XP/2003
- 授权方式: 绿色版
- 软件等级:
- 插件情况:
- 整理时间: 2008-1-7 11:53:15
- 标签Tags: 专用链接加解密
软件介绍 Soft Introduction
【主要代码如下】
'(注:我自己用的不是这种方法,我讨厌For循环.)
Option Explicit
Private Const cstBase64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
Private arrBase64() As String
'作者:同济黄正
'00100001 00100001 00100001 --源码
'00001000 00010010 00000100 00100001 --Base64码
Public Function Base64Encode(strSource As String) As String
On Error Resume Next
'适用于中、英文的Base64编码/解码VB6超精简版 作者:同济黄正
If UBound(arrBase64) = -1 Then
arrBase64 = Split(StrConv(cstBase64, vbUnicode), vbNullChar)
End If
Dim arrB() As Byte, bTmp(2) As Byte, bT As Byte
Dim I As Long, J As Long
arrB = StrConv(strSource, vbFromUnicode)
J = UBound(arrB)
For I = 0 To J Step 3
Erase bTmp
bTmp(0) = arrB(I + 0)
bTmp(1) = arrB(I + 1)
bTmp(2) = arrB(I + 2)
bT = (bTmp(0) And 252) / 4
Base64Encode = Base64Encode & arrBase64(bT)
bT = (bTmp(0) And 3) * 16
bT = bT + bTmp(1) \ 16
Base64Encode = Base64Encode & arrBase64(bT)
bT = (bTmp(1) And 15) * 4
bT = bT + bTmp(2) \ 64
If I + 1 <= J Then
Base64Encode = Base64Encode & arrBase64(bT)
Else
Base64Encode = Base64Encode & "="
End If
bT = bTmp(2) And 63
If I + 2 <= J Then
Base64Encode = Base64Encode & arrBase64(bT)
Else
Base64Encode = Base64Encode & "="
End If
Next
End Function
Public Function Base64Decode(strEncoded As String) As String
'适用于中、英文的Base64编码/解码VB6超精简版 作者:同济黄正
On Error Resume Next
Dim arrB() As Byte, bTmp(3) As Byte, bT, bRet() As Byte
Dim I As Long, J As Long
arrB = StrConv(strEncoded, vbFromUnicode)
J = InStr(strEncoded & "=", "=") - 2
ReDim bRet(J - J \ 4 - 1)
For I = 0 To J Step 4
Erase bTmp
bTmp(0) = (InStr(cstBase64, Chr(arrB(I))) - 1) And 63
bTmp(1) = (InStr(cstBase64, Chr(arrB(I + 1))) - 1) And 63
bTmp(2) = (InStr(cstBase64, Chr(arrB(I + 2))) - 1) And 63
bTmp(3) = (InStr(cstBase64, Chr(arrB(I + 3))) - 1) And 63
bT = bTmp(0) * 2 ^ 18 + bTmp(1) * 2 ^ 12 + bTmp(2) * 2 ^ 6 + bTmp(3)
bRet((I \ 4) * 3) = bT \ 65536
bRet((I \ 4) * 3 + 1) = (bT And 65280) \ 256
bRet((I \ 4) * 3 + 2) = bT And 255
Next
Base64Decode = StrConv(bRet, vbUnicode)
End Function
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