MD5 加密算法 VB 实现代码
虽然现在MD5 加密算法严格来讲已经不算安全，但一般小功能或公司内部使用应该足够了
Attribute VB_Name = "modMd5"
' MODULE: CMD5
'*******************************************************************************
Option Explicit
Public Const BITS_TO_A_BYTE As Long = 8
Public Const BYTES_TO_A_WORD As Long = 4
Public Const BITS_TO_A_WORD As Long = BYTES_TO_A_WORD * BITS_TO_A_BYTE
Public m_lOnBits(0 To 30) As Long
Public m_l2Power(0 To 30) As Long
Public Function MD5_Encrypt(ByVal sText As String) As String
MD5_Init
MD5_Encrypt = MD5(sText)
End Function
'*******************************************************************************
' Class_Initialize (SUB)
'
' DESCRIPTION:
' We will usually get quicker results by preparing arrays of bit patterns and
' powers of 2 ahead of time instead of calculating them every time, unless of
' course the methods are only ever getting called once per instantiation of the
' class.
'*******************************************************************************
Public Sub MD5_Init()
' Could have done this with a loop calculating each value, but simply
' assigning the values is quicker - BITS SET from RIGHT
m_lOnBits(0) = 1 ' 00000000000000000000000000000001
m_lOnBits(1) = 3 ' 00000000000000000000000000000011
m_lOnBits(2) = 7 ' 00000000000000000000000000000111
m_lOnBits(3) = 15 ' 00000000000000000000000000001111
m_lOnBits(4) = 31 ' 00000000000000000000000000011111
m_lOnBits(5) = 63 &nb
相关文档：
在很多 VB 的资料库书籍中，都会很完整的提到：如何由其他种类的文件中将资料导入资料库，但是却很少有书提到：如何将资料库中的资料，导出到各种不同的文件类型的文件中，连 VB 的 Help 中也是这样！
或许是大家都认为资料库主题的重点是在资料库本身吧！
但是，在实际的资料库程序运用中，却常常需要将资料库导出到各种 ......
文章来源:vb大世界 作者：王国荣
「VB 没有提供这样的功能， 必须呼叫 Windows API」， 当笔者这样回答读者之後，有些读者会要求笔者介绍 Windows API 方面的书籍， 尤其是中文书， 但实际上，目前市面上只看到一本原文书(ZD Press 出版的 Visual Basic 5.0 Programming Guide to Win32 API)， 中文书则未见过， 为什麽没� ......
主窗体代码：
'打开网页
Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
'复制文件
Private Declare Fu ......
程序隐形的原理
对于一个隐形程序而言，最基本的要求是：
1. 不在桌面出现界面；
2. 不在任务栏出现图标；
3. 程序名从任务管理器名单中消失。
Public Declare Function GetCurrentProcessId Lib “kernel32” () As Long
’获得当前进程ID函数的声明
Public Declare Functio ......
Option Explicit
Public Declare Function RegSetValueEx Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpData As Any, ByVal cbData As Long) As Long
Public Declare Function RegCreateKey Lib "advapi32.dll" Alias ......
