form1.frm

加密字符串

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "加密"
   ClientHeight    =   7275
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   8700
   LinkTopic       =   "Form1"
   ScaleHeight     =   7275
   ScaleWidth      =   8700
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "解密"
      Height          =   615
      Left            =   30
      TabIndex        =   3
      Top             =   6420
      Width           =   2175
   End
   Begin VB.CommandButton Command1 
      Caption         =   "加密"
      Height          =   615
      Left            =   6360
      TabIndex        =   2
      Top             =   6420
      Width           =   2175
   End
   Begin VB.TextBox Text1 
      Height          =   3075
      Index           =   1
      Left            =   30
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   1
      Text            =   "Form1.frx":0000
      Top             =   3240
      Width           =   8505
   End
   Begin VB.TextBox Text1 
      Height          =   3075
      Index           =   0
      Left            =   30
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   0
      Text            =   "Form1.frx":0006
      Top             =   30
      Width           =   8505
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
    Dim S() As String
    S() = Split(Text1(0), vbCrLf)
    
    For o1 = 0 To UBound(S())
        S(o1) = cipher(S(o1))
    Next
    
    Text1(1) = Join(S(), vbCrLf)
End Sub

Function cipher(stext As String)    '加密程序
    Const min_asc = 32
    Const max_asc = 126
    Const num_asc = max_asc - min_asc + 1
    Dim offset As Long
    Dim strlen As Integer
    Dim i As Integer
    Dim ch As Integer
    offset = 123
    Rnd (-1)
    Randomize (offset)
    strlen = Len(stext)
    For i = 1 To strlen
       ch = Asc(Mid(stext, i, 1))
       If ch >= min_asc And ch <= max_asc Then
           ch = ch - min_asc
           offset = Int((num_asc + 1) * Rnd())
           ch = ((ch + offset) Mod num_asc)
           ch = ch + min_asc
           ptext = ptext & Chr(ch)
       End If
    Next i
    cipher = ptext
End Function

Function decipher(stext As String)      '解密程序
    Const min_asc = 32
    Const max_asc = 126
    Const num_asc = max_asc - min_asc + 1
    Dim offset As Long
    Dim strlen As Integer
    Dim i As Integer
    Dim ch As Integer
    offset = 123
    Rnd (-1)
    Randomize (offset)
    strlen = Len(stext)
    For i = 1 To strlen
       ch = Asc(Mid(stext, i, 1))
       If ch >= min_asc And ch <= max_asc Then
           ch = ch - min_asc
           offset = Int((num_asc + 1) * Rnd())
           ch = ((ch - offset) Mod num_asc)
           If ch < 0 Then
               ch = ch + num_asc
           End If
           ch = ch + min_asc
           ptext = ptext & Chr(ch)
       End If
    Next i
    decipher = ptext
End Function

Private Sub Command2_Click()
    Dim S() As String
    S() = Split(Text1(0), vbCrLf)
    
    For o1 = 0 To UBound(S())
        S(o1) = decipher(S(o1))
    Next
    
    Text1(1) = Join(S(), vbCrLf)

End Sub