1.Open visual studio and create a project
2.Add the following assembly on the page
Imports
System.Security
Imports
System.Security.Cryptography
Imports
System.Text
Imports
System.IO
3.Now write the Code in the
Page
Public Class Tester
Public Shared Sub Main()
Try
Dim myDESProvider As
DESCryptoServiceProvider = New
DESCryptoServiceProvider()
myDESProvider.Key = ASCIIEncoding.ASCII.GetBytes("12345678")
myDESProvider.IV = ASCIIEncoding.ASCII.GetBytes("12345678")
Dim myICryptoTransform
As ICryptoTransform = myDESProvider.CreateEncryptor(myDESProvider.Key,
myDESProvider.IV)
Dim ProcessFileStream
As FileStream = New FileStream("Encrypted.txt",
FileMode.Open, FileAccess.Read)
Dim ResultFileStream As
FileStream = New FileStream("Decrypted.txt",
FileMode.Create, FileAccess.Write)
Dim
myCryptoStream As CryptoStream =
New CryptoStream(ResultFileStream,
myICryptoTransform, CryptoStreamMode.Write)
Dim bytearrayinput(ProcessFileStream.Length - 1)
As Byte
ProcessFileStream.Read(bytearrayinput, 0, bytearrayinput.Length)
myCryptoStream.Write(bytearrayinput, 0, bytearrayinput.Length)
myCryptoStream.Close()
ProcessFileStream.Close()
ResultFileStream.Close()
Catch ex As
Exception
Console.WriteLine(ex.Message)
End Try
Console.ReadLine()
End Sub
End Class
4.Now
convert the file.text file in the folder D:\New Folder
(2)\ConsoleApplication4\ConsoleApplication4\bin\Debug (My text file path) to
Encrypted text file.
Now start
debugging, you will see a file.txt automatically converted into Encrypted. text file.