Full Source

1 files changed, 55 insertions, 0 deletions

diff --git a/ShiftOS/File_Crypt.vb b/ShiftOS/File_Crypt.vb
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+Imports System
+Imports System.IO
+Imports System.Security
+Imports System.Security.Cryptography
+Imports System.Text
+Public Class File_Crypt
+    Public Const sSecretKey As String = "Password"
+
+    Public Shared Sub EncryptFile(ByVal sInputFilename As String, ByVal sOutputFilename As String, ByVal sKey As String)
+
+        Dim fsInput As New FileStream(sInputFilename, FileMode.Open, FileAccess.Read)
+        Dim fsEncrypted As New FileStream(sOutputFilename, FileMode.Create, FileAccess.Write)
+
+        Dim DES As New DESCryptoServiceProvider()
+
+
+        DES.Key = ASCIIEncoding.ASCII.GetBytes(sKey)
+
+        DES.IV = ASCIIEncoding.ASCII.GetBytes(sKey)
+
+        Dim desencrypt As ICryptoTransform = DES.CreateEncryptor()
+
+        Dim cryptostream As New CryptoStream(fsEncrypted, desencrypt, CryptoStreamMode.Write)
+
+        Dim bytearrayinput(fsInput.Length - 1) As Byte
+        fsInput.Read(bytearrayinput, 0, bytearrayinput.Length)
+        cryptostream.Write(bytearrayinput, 0, bytearrayinput.Length)
+        cryptostream.Dispose()
+        fsInput.Dispose()
+        fsEncrypted.Dispose()
+    End Sub
+
+    Public Shared Sub DecryptFile(ByVal sInputFilename As String, ByVal sOutputFilename As String, ByVal sKey As String)
+
+        Dim DES As New DESCryptoServiceProvider()
+
+
+        DES.Key() = ASCIIEncoding.ASCII.GetBytes(sKey)
+
+        DES.IV = ASCIIEncoding.ASCII.GetBytes(sKey)
+
+        Dim fsread As New FileStream(sInputFilename, FileMode.Open, FileAccess.Read)
+
+        Dim desdecrypt As ICryptoTransform = DES.CreateDecryptor()
+
+        Dim cryptostreamDecr As New CryptoStream(fsread, desdecrypt, CryptoStreamMode.Read)
+
+        Dim fsDecrypted As New StreamWriter(sOutputFilename)
+        fsDecrypted.Write(New StreamReader(cryptostreamDecr).ReadToEnd)
+        fsDecrypted.Flush()
+        fsread.Dispose()
+        fsDecrypted.Dispose()
+    End Sub
+
+End Class
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