VB.Net Sandbox

VbNet · Console

/Program.vb

Imports System
Imports System.Text.RegularExpressions
Imports System.Text
Imports System.Security.Cryptography

Public Module Module1

	Public Sub Main()
		Dim Phone = DecryptString("yyEq0Uvvhq2uQOcWG8peLoeRQehqip/fKdeG/kjEVb4=")


		Console.WriteLine(Phone)
		
	End Sub




	Private Function GetLogFilePath() As String
        Return IO.Path.Combine(Environment.CurrentDirectory, "Log.txt")
    End Function




	Private Function DecryptString(EncryptedString As String) As String
        If String.IsNullOrEmpty(EncryptedString) Then
            Return String.Empty
        Else
            Return Decrypt(EncryptedString, "667912", "1313Rf99", 3, "1L1SA61493DRV53Z", 256)
        End If
    End Function

	Private Function EncryptString(PlainString As String) As String
        If String.IsNullOrEmpty(PlainString) Then
            Return String.Empty
        Else
            Return Encrypt(PlainString, "667912", "1313Rf99", 3, "1L1SA61493DRV53Z", 256)
        End If
    End Function

	Private Function Encrypt(ByVal plainText As String, _
                                   ByVal passPhrase As String, _
                                   ByVal saltValue As String, _
                                    ByVal passwordIterations As Integer, _
                                   ByVal initVector As String, _
                                   ByVal keySize As Integer) _
                           As String

        Dim initVectorBytes As Byte() = Encoding.ASCII.GetBytes(initVector)
        Dim saltValueBytes As Byte() = Encoding.ASCII.GetBytes(saltValue)
        Dim plainTextBytes As Byte() = Encoding.ASCII.GetBytes(plainText)
        Dim password As New Rfc2898DeriveBytes(passPhrase, _
                                           saltValueBytes, _
                                           passwordIterations)
        Dim keyBytes As Byte() = password.GetBytes(CInt(keySize / 8))
        Dim symmetricKey As New AesCryptoServiceProvider
        symmetricKey.Mode = CipherMode.CBC
        Dim encryptor As ICryptoTransform = symmetricKey.CreateEncryptor(keyBytes, initVectorBytes)
        Using memoryStream As New IO.MemoryStream()
            Using cryptoStream As New CryptoStream(memoryStream, _
                                            encryptor, _
                                            CryptoStreamMode.Write)
                cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length)
                cryptoStream.FlushFinalBlock()
                Dim cipherTextBytes As Byte() = memoryStream.ToArray()
                memoryStream.Close()
                cryptoStream.Close()
                Return Convert.ToBase64String(cipherTextBytes)
            End Using
        End Using
    End Function

	Private Function Decrypt(ByVal cipherText As String, _
                                   ByVal passPhrase As String, _
                                   ByVal saltValue As String, _
                                    ByVal passwordIterations As Integer, _
                                   ByVal initVector As String, _
                                   ByVal keySize As Integer) _
                           As String

        Dim initVectorBytes As Byte()
        initVectorBytes = Encoding.ASCII.GetBytes(initVector)

        Dim saltValueBytes As Byte()
        saltValueBytes = Encoding.ASCII.GetBytes(saltValue)

        Dim cipherTextBytes As Byte()
        cipherTextBytes = Convert.FromBase64String(cipherText)

        Dim password As New Rfc2898DeriveBytes(passPhrase, _
                                           saltValueBytes, _
                                           passwordIterations)

        Dim keyBytes As Byte()
        keyBytes = password.GetBytes(CInt(keySize / 8))

        Dim symmetricKey As New AesCryptoServiceProvider
        symmetricKey.Mode = CipherMode.CBC

        Dim decryptor As ICryptoTransform
        decryptor = symmetricKey.CreateDecryptor(keyBytes, initVectorBytes)

        Dim memoryStream As IO.MemoryStream
        memoryStream = New IO.MemoryStream(cipherTextBytes)

        Dim cryptoStream As CryptoStream
        cryptoStream = New CryptoStream(memoryStream, _
                                        decryptor, _
                                        CryptoStreamMode.Read)

        Dim plainTextBytes As Byte()
        ReDim plainTextBytes(cipherTextBytes.Length)

        Dim decryptedByteCount As Integer
        decryptedByteCount = cryptoStream.Read(plainTextBytes, _
                                               0, _
                                               plainTextBytes.Length)

        memoryStream.Close()
        cryptoStream.Close()

        Dim plainText As String
        plainText = Encoding.ASCII.GetString(plainTextBytes, _
                                            0, _
                                            decryptedByteCount)

        Return plainText
    End Function




End Module