If you really need this to be written in the source code of VB.net, you can try base64:
dim strCryptedString As String = Base64Decode('bT5ew6bigJNTW0rCr3bDll/DlcOadcONw5QnwrTDpMWTw4jigJggwq5ATcKpdMKyI8O3W8OJw6XCuVXDp2ZVNVTCsMOkw5nigJzCqeKAncuGw4dWw51dIFvigJll4oSiYcKPwqvDg8KwNyNkw4lKPg==');
I am not sure which libraries have real names.