frmtestpwd.frm

程序加密算法

VERSION 5.00
Begin VB.Form frmTestPWD 
   BorderStyle     =   1  'Fixed Single
   ClientHeight    =   2520
   ClientLeft      =   1560
   ClientTop       =   1845
   ClientWidth     =   5565
   Icon            =   "frmTestPWD.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2520
   ScaleWidth      =   5565
   Begin VB.TextBox txtPassword 
      Height          =   315
      IMEMode         =   3  'DISABLE
      Index           =   1
      Left            =   180
      MaxLength       =   250
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   1740
      Width           =   4095
   End
   Begin VB.CommandButton cmdChoice 
      Caption         =   "&OK"
      BeginProperty Font 
         Name            =   "MS Sans Serif"
         Size            =   8.25
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Index           =   0
      Left            =   4500
      TabIndex        =   2
      Top             =   1260
      Width           =   975
   End
   Begin VB.CommandButton cmdChoice 
      Caption         =   "&Cancel"
      BeginProperty Font 
         Name            =   "MS Sans Serif"
         Size            =   8.25
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Index           =   1
      Left            =   4500
      TabIndex        =   3
      Top             =   1710
      Width           =   975
   End
   Begin VB.TextBox txtPassword 
      Height          =   315
      IMEMode         =   3  'DISABLE
      Index           =   0
      Left            =   840
      MaxLength       =   15
      TabIndex        =   0
      Top             =   1035
      Width           =   3435
   End
   Begin VB.Label Label2 
      AutoSize        =   -1  'True
      BackStyle       =   0  'Transparent
      Caption         =   "Password / Passphrase"
      Height          =   195
      Index           =   1
      Left            =   180
      TabIndex        =   7
      Top             =   1500
      Width           =   1680
   End
   Begin VB.Label lblMyLabel 
      BackStyle       =   0  'Transparent
      Height          =   240
      Left            =   240
      TabIndex        =   6
      Top             =   2220
      Width           =   3405
   End
   Begin VB.Label lblTitle 
      Alignment       =   2  'Center
      BackColor       =   &H00C00000&
      BorderStyle     =   1  'Fixed Single
      Caption         =   "Test Pasword Entry"
      BeginProperty Font 
         Name            =   "Times New Roman"
         Size            =   26.25
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   -1  'True
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FFFFFF&
      Height          =   735
      Left            =   120
      TabIndex        =   5
      Top             =   120
      Width           =   5310
   End
   Begin VB.Label Label2 
      Alignment       =   1  'Right Justify
      AutoSize        =   -1  'True
      BackStyle       =   0  'Transparent
      Caption         =   "User ID"
      Height          =   195
      Index           =   0
      Left            =   170
      TabIndex        =   4
      Top             =   1140
      Width           =   540
   End
End
Attribute VB_Name = "frmTestPWD"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

' ===========================================================================
'    DATE      NAME                      DESCRIPTION
' -----------  ------------------------  ------------------------------------
' 30-DEC-2000  Kenneth Ives              Written by [e-mail]
' ---------------------------------------------------------------------------
' Define module level variables
' ---------------------------------------------------------------------------
  Private arUserID()   As Byte
  Private arPWord()    As Byte
  Private m_strUserID  As String
  Private m_strPWord   As String
  
Private Sub cmdChoice_Click(Index As Integer)

' ---------------------------------------------------------------------------
' Define variables
' ---------------------------------------------------------------------------
  Dim strTmp1  As String
  Dim strTmp2  As String
  
' ---------------------------------------------------------------------------
' Based on the button pressed
' ---------------------------------------------------------------------------
  Select Case Index
         
         ' OK button was pressed.
         Case 0:
              ' Test length of user ID
              If Len(m_strUserID) = 0 Then
                  MsgBox "A user ID must be entered.", _
                         vbInformation Or vbOKOnly, "User ID missing"
                  txtPassword(0).SetFocus
                  Exit Sub
              Else
                  arUserID = ConvertToArray(m_strUserID)
              End If
                  
              ' Test length of password
              If Len(m_strPWord) = 0 Then
                  MsgBox "A password / passphrase must be entered.", _
                         vbInformation Or vbOKOnly, "Password / Passphrase missing"
                  Erase arPWord()
                  m_strPWord = ""
                  txtPassword(1).SetFocus
                  Exit Sub
              Else
                  arPWord = ConvertToArray(m_strPWord)
              End If
                  
              ' Test length of password data entered
              If Not Correct_Password_Length(arPWord()) Then
                  Erase arPWord()
                  m_strPWord = ""
                  txtPassword(1).Text = ""
                  txtPassword(1).SetFocus
                  Exit Sub
              End If
             
              ' Is this user on file?
              If Not Query_User(arUserID(), strTmp1, strTmp2) Then
                  MsgBox "User [ " & m_strUserID & _
                         " ] cannot be found in the database.", _
                         vbInformation Or vbOKOnly, "Invalid User ID"
                  
                  ' get rid of any data returned
                  strTmp1 = String$(250, 0)
                  strTmp2 = String$(250, 0)
                  Reset_frmTestPWD
                  Exit Sub
              Else
                  ' get rid of any data returned
                  strTmp1 = String$(250, 0)
                  strTmp2 = String$(250, 0)
              End If
              
              ' Compare with the data entered with the hashed results
              ' in the database.
              If Not Validate_Password(arUserID(), arPWord()) Then
                  Erase arPWord()
                  m_strPWord = ""
                  txtPassword(1).Text = ""
                  txtPassword(1).SetFocus
                  Exit Sub
              End If
              
              ' We were successful
              MsgBox "Successfully identified user [ " & _
                     m_strUserID & " ] in the database.", _
                     vbInformation Or vbOKOnly, "Success"
              Reset_frmTestPWD
              
         ' Cancel button was pressed.
         Case 1:
              ' Return to the main menu.
              Reset_frmTestPWD
              frmTestPWD.Hide
              frmMainMenu.Show
  End Select
  
End Sub

Private Sub ClearVariables()

' ---------------------------------------------------------------------------
' clear variables