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VB.NET Encryption Center

By Raven, in Programare

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Raven

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Imports System.Text
Imports System.Text.RegularExpressions
Public Class Form1






    'Autor : Raven
    'Contact : raven_200155@yahoo.com





    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim md5 As String
        If CheckBox1.Checked = True Then
            md5 = getMD5Hash(TextBox1.Text)
            TextBox2.Text = (md5)
            lblstatus.Text = "Done!"


        End If
        If CheckBox2.Checked = True Then
            md5 = StringToHex(TextBox1.Text)
            TextBox2.Text = (md5)
            lblstatus.Text = "Done!"

        End If
        If CheckBox3.Checked = True Then
            md5 = Encode(TextBox1.Text)
            TextBox2.Text = (md5)
            lblstatus.Text = "Done!"
        End If
        If CheckBox4.Checked = True Then
            md5 = StrEncrypt(TextBox1.Text)
            TextBox2.Text = (md5)
            lblstatus.Text = "Done!"
        End If
        If CheckBox5.Checked = True Then
            md5 = MessageReversal(TextBox1.Text)
            TextBox2.Text = (md5)
            lblstatus.Text = "Done!"
        End If
        If CheckBox6.Checked = True Then
            md5 = getSHA1Hash(TextBox1.Text)
            TextBox2.Text = (md5)
            lblstatus.Text = "Done!"
        End If
        If CheckBox7.Checked = True Then
            md5 = ConvertToBinary(TextBox1.Text)
            TextBox2.Text = (md5)
            lblstatus.Text = "Done!"
        End If
        If CheckBox8.Checked = True Then
            md5 = rot13(TextBox1.Text)
            TextBox2.Text = (md5)
            lblstatus.Text = "Done!"

        End If
        If CheckBox9.Checked = True Then
            md5 = TextBox1.Text
            md5 = XOREncryption(md5, TextBox1.Text)
            TextBox2.Text = md5
            lblstatus.Text = "Done!"

        End If
        If CheckBox10.Checked = True Then
            TextBox2.Text = TextBox1.Text

        End If

    End Sub

    Function getMD5Hash(ByVal strToHash As String) As String

        Dim md5Obj As New Security.Cryptography.MD5CryptoServiceProvider

        Dim bytesToHash() As Byte = System.Text.Encoding.ASCII.GetBytes(strToHash)

        bytesToHash = md5Obj.ComputeHash(bytesToHash)

        Dim strResult As String = ""

        For Each b As Byte In bytesToHash
            strResult += b.ToString("x2")
        Next

        Return strResult

    End Function


    Public Function StringToHex(ByVal str As String) As String
        Dim ret As String

        For i As Integer = 0 To str.Length - 1
            ret &= Asc(str.Substring(i, 1)).ToString("x").ToUpper & " "
        Next

        Return ret.Trim()

    End Function
    Function Encode(ByVal dec As String) As String

        Dim bt() As Byte
        ReDim bt(dec.Length)
        bt = System.Text.Encoding.ASCII.GetBytes(dec)
        Dim enc As String
        enc = System.Convert.ToBase64String(bt)
        Return enc
    End Function

    Private Sub ExitToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ExitToolStripMenuItem.Click
        Me.Close()
    End Sub
    Private Function StrEncrypt(ByVal EnStr As String) As String

        Dim Key As String

        Key = "Abt$9>3ZyX 21~)**1_0d%1xOp0#?s!14k-L7`3s9cxPo1ilIj=-0DnmOpas#$%5854/*?>00021atanu???"

        Dim p1 As Integer

        Randomize()

        p1 = (Rnd() * 8) + 1

        Dim p2 As Integer

        p2 = Len(EnStr)

        Dim RandSeed As Integer

        RandSeed = p1

        Dim i As Integer

        Dim s1 As String = ""

        Dim ft As String

        ft = ""

        For i = 1 To 50

            s1 = s1 & Chr(Asc(Rnd() * 255))

        Next



        ft = Chr(p1) & Chr(p2)

        Dim iXor As Integer

        For i = 1 To Len(EnStr)

            iXor = Asc(Mid(Key, i + p1, 1)) Xor Asc(Mid(EnStr, i, 1))

            ft = ft & Chr(iXor)

        Next

        For i = Len(ft) To 50

            ft = ft & Chr(Rnd() * 255)

        Next

        StrEncrypt = ft

    End Function
    Function MessageReversal(ByVal StrDataIn As String)

        Dim StrOut As String

        StrOut = ""

        Dim I As Integer

        For I = Len(StrDataIn) To 1 Step -1

            StrOut &= Mid(StrDataIn, I, 1)

        Next

        MessageReversal = StrOut

    End Function

    Function getSHA1Hash(ByVal strToHash As String) As String

        Dim sha1Obj As New Security.Cryptography.SHA1CryptoServiceProvider

        Dim bytesToHash() As Byte = System.Text.Encoding.ASCII.GetBytes(strToHash)

        bytesToHash = sha1Obj.ComputeHash(bytesToHash)

        Dim strResult As String = ""
        For Each b As Byte In bytesToHash
            strResult += b.ToString("x2")
        Next
        Return strResult

    End Function




    Private Sub AboutToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AboutToolStripMenuItem.Click
        AboutBox1.Show()
    End Sub


    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        Dim a As String
        If CheckBox15.Checked = True Then
            a = HexToString(TextBox2.Text)
            TextBox1.Text = a
        ElseIf CheckBox13.Checked = True Then
            a = Decode(TextBox2.Text)
            TextBox1.Text = a
        ElseIf CheckBox14.Checked = True Then

            a = ConvertToAscii(TextBox2.Text)
            TextBox1.Text = a
        ElseIf CheckBox12.Checked = True Then
            TextBox1.Text = TextBox2.Text
        End If


    End Sub


    Public Function ConvertToBinary(ByVal str As String) As String
        Dim converted As New StringBuilder
        For Each b As Byte In ASCIIEncoding.ASCII.GetBytes(str)
            converted.Append(Convert.ToString(b, 2).PadLeft(8, "0"))
        Next
        Return converted.ToString()
    End Function


    Function rot13(ByVal rot13text)
        Dim k, j, rot13text_rotated As String
        rot13text_rotated = ""
        For i = 1 To Len(rot13text)
            j = Mid(rot13text, i, 1)
            k = Asc(j)
            If k >= 97 And k <= 109 Then
                k = k + 13
            ElseIf k >= 110 And k <= 122 Then
                k = k - 13
            ElseIf k >= 65 And k <= 77 Then
                k = k + 13
            ElseIf k >= 78 And k <= 90 Then
                k = k - 13
            End If


            rot13text_rotated = rot13text_rotated & Chr(k)

        Next

        rot13 = rot13text_rotated

    End Function
    Public Function XOREncryption(ByVal CodeKey As String, ByVal DataIn As String) As String

        Dim lonDataPtr As Long
        Dim strDataOut As String
        Dim temp As Integer
        Dim tempstring As String
        Dim intXOrValue1 As Integer
        Dim intXOrValue2 As Integer


        For lonDataPtr = 1 To Len(DataIn)

            intXOrValue1 = Asc(Mid$(DataIn, lonDataPtr, 1))

            intXOrValue2 = Asc(Mid$(CodeKey, ((lonDataPtr Mod Len(CodeKey)) + 1), 1))

            temp = (intXOrValue1 Xor intXOrValue2)
            tempstring = Hex(temp)
            If Len(tempstring) = 1 Then tempstring = "0" & tempstring

            strDataOut = strDataOut + tempstring
        Next lonDataPtr
        XOREncryption = strDataOut
    End Function

    Function Decode(ByVal enc As String) As String
        Dim bt() As Byte
        bt = System.Convert.FromBase64String(enc)
        Dim dec As String
        dec = System.Text.Encoding.ASCII.GetString(bt)
        Return dec
    End Function
    Public Function HexToString(ByVal HexToStr As String) As String
        Dim strTemp As String
        Dim strReturn As String
        Dim I As Long
        For I = 1 To Len(HexToStr) Step 3
            strTemp = Chr(Val("&H" & Mid(HexToStr, I, 2)))
            strReturn = strReturn & strTemp
        Next I
        HexToString = strReturn

    End Function

    Public Function ConvertToAscii(ByVal str As String) As String
        Dim chars As String = Regex.Replace(str, "[^01]", "")
        Dim arr((chars.Length / 8) - 1) As Byte
        For i As Integer = 0 To arr.Length - 1
            arr(i) = Convert.ToByte(chars.Substring(i * 8, 8), 2)
        Next
        Return ASCIIEncoding.ASCII.GetString(arr)
    End Function





    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        Me.SaveFileDialog1.ShowDialog()

        Me.TextBox3.Text = Me.SaveFileDialog1.FileName
    End Sub
    Function EncodeByte(ByVal bt() As Byte) As String

        Dim enc As String
        enc = System.Convert.ToBase64String(bt)

        Return enc
    End Function
    Function DecodeToByte(ByVal enc As String) As Byte()
        Dim bt() As Byte

        bt = System.Convert.FromBase64String(enc)

        Return bt

    End Function
    Sub DecodeFile(ByVal srcFile As String, ByVal destFile As String)
        Dim src As String
        Dim sr As New IO.StreamReader(srcFile)

        src = sr.ReadToEnd

        sr.Close()

        Dim bt64 As Byte() = DecodeToByte(src)

        If IO.File.Exists(destFile) Then
            IO.File.Delete(destFile)
        End If

        Dim sw As New IO.FileStream(destFile, IO.FileMode.CreateNew)

        sw.Write(bt64, 0, bt64.Length)


        sw.Close()

    End Sub

    Sub EncodeFile(ByVal srcFile As String, ByVal destfile As String)
        Dim srcBT As Byte()
        Dim dest As String

        Dim sr As New IO.FileStream(srcFile, IO.FileMode.Open)

        ReDim srcBT(sr.Length)

        sr.Read(srcBT, 0, sr.Length)


        sr.Close()

        dest = EncodeByte(srcBT)

        If IO.File.Exists(destfile) Then
            IO.File.Delete(destfile)
        End If

        Dim sw As New IO.StreamWriter(destfile, False)

        sw.Write(dest)

        sw.Close()
    End Sub

    Private Sub butDecode2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butDecode2.Click
        Try
            If Me.TextBox3.Text = Nothing Or Me.TextBox4.Text = Nothing Then
                MsgBox("Please select source and destination files!")
                Exit Sub
            End If

            Me.DecodeFile(Me.TextBox4.Text, Me.TextBox3.Text)

            MsgBox("Conversion complete!")

        Catch ex As Exception
            MsgBox(ex.ToString)

        End Try


    End Sub



    Private Sub butEndcode2_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butEndcode2.Click
        Try
            If Me.TextBox3.Text = Nothing Or Me.TextBox4.Text = Nothing Then
                MsgBox("Please select source and destination files!")
                Exit Sub
            End If

            Me.EncodeFile(Me.TextBox3.Text, Me.TextBox4.Text)

            MsgBox("Conversion complete!")

        Catch ex As Exception
            MsgBox(ex.ToString)

        End Try
    End Sub

    Private Sub Button3_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Me.SaveFileDialog1.ShowDialog()

        Me.TextBox4.Text = Me.SaveFileDialog1.FileName
    End Sub
End Class

Screenshot aici:

http://i40.tinypic.com/2prsd1u.jpg

Download: .exe

http://rapidshare.com/files/201615784/Encryption_Center.rar.html

Pastebin :http://pastebin.com/m5e6c431d

Language : VB.NET

Autor : Eu

Bafta :D

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