bangmangzhaocuo.txt

加密解密小程序

VERSION 4.00
Begin VB.Form Form1 
   Caption         =   “Sample“
   ClientHeight    =   705
   ClientLeft      =   3915
   ClientTop       =   3315
   ClientWidth     =   1800
   ControlBox      =   0   ‘False
   Height          =   1110
   Left            =   3855
   LinkTopic       =   “Form1“
   MaxButton       =   0   ‘False
   MinButton       =   0   ‘False
   ScaleHeight     =   705
   ScaleWidth      =   1800
   Top             =   2970
   Width           =   1920
   Begin VB.CommandButton Command1 
      Caption         =   “Command1“
      Height          =   495
      Left            =   240
      TabIndex        =   0
      Top             =   120
      Width           =   1215
   End
End
Attribute VB_Name = “Form1“
Attribute VB_Creatable = False
Attribute VB_Exposed = False
Sub FileEncodeAndDecode(InputFile As String, OutputFile As String, PasswordKey As String)
    
    Dim temp As Single
    Dim Char As String * 1
    Dim XORMask As Single
    Dim temp1 As Integer
    
    Open InputFile For Binary As #1
    Open OutputFile For Binary As #2
    
    For x = 1 To Len(PasswordKey)
        temp = Asc(Mid$(PasswordKey, x, 1))
        For y = 1 To temp
            temp1 = Rnd
        Next y
        
        ‘ Re-seed to throw off prying eyes
        Randomize temp1
    Next x
        
    
    Counter = 0
    For z = 1 To FileLen(InputFile)
        
        ‘Generate random mask
        XORMask = Int(Rnd * 256)
        
        ‘Get the char & change it
        Get 1, , Char
        Char = Chr$((Asc(Char) Xor XORMask))
        Put 2, , Char
        
        Counter = Counter + 1
        If Counter > Len(PasswordKey) Then Counter = 1
        
        ‘ Pull random numbers from the hat
        For x = 1 To (Asc(Mid$(PasswordKey, Counter