利用随机码防止密码被窃取.frm

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VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   2280
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3720
   KeyPreview      =   -1  'True
   LinkTopic       =   "Form1"
   ScaleHeight     =   2280
   ScaleWidth      =   3720
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      Height          =   375
      Left            =   2520
      TabIndex        =   6
      Top             =   960
      Width           =   975
   End
   Begin VB.TextBox Text3 
      Enabled         =   0   'False
      Height          =   270
      Left            =   180
      TabIndex        =   5
      Top             =   1860
      Width           =   1995
   End
   Begin VB.TextBox Text2 
      Enabled         =   0   'False
      Height          =   270
      Left            =   180
      TabIndex        =   4
      Top             =   1140
      Width           =   2055
   End
   Begin VB.TextBox Text1 
      Height          =   270
      IMEMode         =   3  'DISABLE
      Left            =   180
      PasswordChar    =   "*"
      TabIndex        =   0
      Top             =   420
      Width           =   2055
   End
   Begin VB.Label Label3 
      Caption         =   "请输入密码："
      Height          =   255
      Left            =   180
      TabIndex        =   3
      Top             =   120
      Width           =   1875
   End
   Begin VB.Label Label2 
      Caption         =   "你输入的密码："
      Height          =   255
      Left            =   180
      TabIndex        =   2
      Top             =   1560
      Width           =   1995
   End
   Begin VB.Label Label1 
      Caption         =   "伪密码："
      Height          =   255
      Left            =   180
      TabIndex        =   1
      Top             =   840
      Width           =   1875
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim X As Long
Dim Str As String

Private Sub Command1_Click()
    Text2.Text = Text1.Text
    Text3.Text = Str
    If Str = "shiming" Then
        MsgBox "密码正确"
    Else
        MsgBox "密码错误"
    End If
End Sub

Private Sub Form_Load()
    Randomize
End Sub

Private Sub Text1_GotFocus()
    Str = ""
End Sub

Private Sub Text1_KeyPress(KeyAscii As Integer)
    Str = Str + Chr(KeyAscii)
    X = Int(122 - 48 + 1) * Rnd + 48
    KeyAscii = Asc(Chr(X))
End Sub