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用VB.NET加密文件 加密文件夹vb.net文件夹加密软件文件夹加密文件夹加密超级大师

程序员文章站 2022-07-05 21:31:39
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VB.NET是一种常见的编程环境,VB.NET编程环境可以帮助开发人员打造一个性能稳定,安全可靠的编程平台,帮助开发人员大大提高编程效率。那么怎么用VB.NET加密文件呢?我们将给大家介绍使用XOR加密算法对数据进行加密。

这是一种很简单的算法,使用了尽量简单的VB编程方法,通俗易懂。我们可以采用更安全的算法如DES算法,IDEA算法等。

在窗体中添加一RichTextBox,设置其Name属性为SourceFile,Multiline属性为True,ScrollBars属性为3-both。添加一MainMenu,设置一菜单项“文件”,其下有“打开”,“保存”,“加密”,“解密”,“算子”等子菜单项。

以下是大致的VB.NET加密文件的程序界面:

Public Class Form1  
Inherits System.Windows.Forms.Form  
Dim strNum As String  
Private Sub Form1_Load(ByVal eventSender
As System.Object, ByVal eventArgs
As System.EventArgs) Handles MyBase.Load  
strNum = "password"  
End Sub  
Private Sub Form1_Resize(ByVal event
Sender As System.Object, ByVal eventArgs
As System.EventArgs) Handles MyBase.Resize  
SourceFile.Width = Form1.DefInstance.Width  
SourceFile.Height = Form1.DefInstance.Height  
End Sub 

  
解密过程,对xor算法而言,解密和VB.NET加密文件的过程是完全一样的

Private Function XorOut(ByRef
strNum As String, ByRef strText
As String) As String  
Dim i As Integer  
Dim XorValue1 As Short  
Dim XorValue2 As Short  
Dim strResult As String  
For i = 1 To Len(strText)  
XorValue1 = Asc(Mid(strText, i, 1))  
XorValue2 = Asc(Mid(strNum,
(i Mod Len(strNum)) + 1, 1))  
strResultstrResult = strResult &
Chr(XorValue1 Xor XorValue2)  
Next  
XorOut = strResult  
End Function  

Private Sub MenuDeEncrypt_Click
(ByVal sender As System.Object,
ByVal e As System.EventArgs)
Handles MenuDeEncrypt.Click  
SourceFile.Text = XorOut(strNum,
(SourceFile.Text))  
End Sub  

Private Sub MenuEncrypt_Click
(ByVal sender As System.Object,
ByVal e As System.EventArgs)
Handles MenuEncrypt.Click  
SourceFile.Text = XorOut(strNum,
(SourceFile.Text))  
End Sub  

Private Sub MenuOpen_Click(ByVal
sender As System.Object, ByVal e
As System.EventArgs) Handles
MenuOpen.Click  
Dim openFile1 As New OpenFileDialog  
' Determine whether the user
selected a file from the OpenFileDialog.  
If (openFile1.ShowDialog() =
DialogResult.OK) _  
And (openFile1.FileName.Length > 0) Then  

' Load the contents of the
file into the RichTextBox.  
SourceFile.LoadFile(openFile1.FileName, _  
RichTextBoxStreamType.PlainText)  
End If  
End Sub  

Private Sub MenuSave_Click(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles MenuSave.Click  
' Create a SaveFileDialog to request
a path and file name to save to.  
Dim saveFile1 As New SaveFileDialog  
' Initialize the SaveFileDialog to
specify the RTF extension for the file.  
'saveFile1.DefaultExt = "*.rtf"  
'saveFile1.Filter = "RTF Files|*.rtf"  
' Determine if the user selected a
file name from the saveFileDialog.  
If (saveFile1.ShowDialog() = DialogResult.OK) _  
And (saveFile1.FileName.Length) > 0 Then  
' Save the contents of the
RichTextBox into the file.  
SourceFile.SaveFile(saveFile1.FileName, _  
RichTextBoxStreamType.PlainText)  
End If  
End Sub  
Private Sub MenuNum_Click(ByVal
sender As System.Object, ByVal e
As System.EventArgs) Handles MenuNum.Click  
strNum = InputBox("请输入加密算子",
"设置加密算子")  
End Sub  
End Class 

以上就是用vb.net编程加密文件夹的整个过程,但是这个方法适用于懂软件编程的人员,如果您不懂编程的话,还是建议您下载使用文件夹加密软件,文件夹加密超级大师是目前最常用的文件和文件夹加密软件,如果您要多文件或文件夹加密的话,可以到文件夹加密超级大师的官方网站下载文件夹加密超级大师来给您的文件和文件夹加密。