Simulation Unit for Security in Automotive Networks (SUSAN) is unique easy to setup and use solution providing simulations of vehicle functions of Electronic Control Units (ECU). SUSAN is integrated with multiple applications and serves as an enabler for development and testing of functionalities in various simulation environments. It offers simulation scenarios from basic vehicle functionalities up to advanced features related to security like Immobilizer master/slave, Secured On-board Communication, Component protection. Thanks to its comprehensive scope and ease of use solution is SUSAN widely applied in all areas of vehicle functions development.
The original goal of SUSAN box was to provide a system that simulates parts of the anti-theft protection of the modular vehicle kit at E3 1.2 / PPE platform. As the requirements for the system developed, the scope of the functionalities grew accordingly. Currently SUSAN adopts functionality for PPE/PPC and continually expand supported simulations also for MEB and MQBevo platforms.
The SUSAN presents a live product that is continuously improved based on customer requests. Our team currently works on the extension of the SUSAN functionality to provide one universal simulation environment for all platform within VW Group.
The main convenience of SUSAN is ability to operate with real VINs and security keys and so it keeps ECUs "online" due to that can save a lot of time, money and does not require wide knowledge about security in automotive network.
The SUSAN simulation solution consists of 4 complementary modules that form the entire functional ecosystem
SUSAN CAN extender
Main part of this ecosystem is SUSAN advanced, that represents the computation module on which all simulations occurs. SUSAN connectis ethernet switch that enables an interconnection of devices via standard Ethernet and automotive Ethernet ports. Cryptographic module serves as secure key storage for ECU secrets and has a processor for calculating cryptographic signatures. SUSAN CAN extender must be used for more complex simulations where more than 2 CANs are required.
Available User Interfaces
There are three different User Interfaces (HMI) implemented for operating with SUSAN
remote interface (remoteHMI)
The phyHMI enables the system to be configured without additional end devices.
The remoteHMI provides an interface between external automation systems and SUSAN advanced via ethernet. It also allows to implement more complex custom simulations.
The webHMI is an interactive browser interface for the user to control the SUSAN system. It provides even more settings than the phyHMI due to the lack of its physical limitations while in the
same time being much more user friendly for complex configuration tasks like creating preset config files, etc.
Main simulation system for PPC/PPE platforms within VW Group
Only solution providing security relevant simulations that keeps ECUs "online" with real VIN and security keys
Simulations for PPE/PPC, MQBevo, MEB platforms
Easy to setup and use
Three user interfaces (web, physical, remote) for various purposes
Modular simulation system
Continous extension of the function scope and wide customer care support
The most available Use Cases are oriented for E3 1.2 PPE/PPC platform
Use Cases for MQBevo and MEB platforms are currently mainly oriented to One Infotainment Development. Available simulations for PPE/PPC are continuously being adoped into MQBevo and MEB platforms
Component Protection generation 3
Immobilizer version 5 and 6
Secured Onboard Communication
Terminal Clamp Control
Over The Air
FID – Combi
Personalisation Master 2.0
SUSAN advancedis the main simulation system with with interfaces to automotive bus systems within VW Group. It consist of a Raspberry Pi compute module running the SUSAN Software Stack on top of a modified Linux distribution that presents the runtime environment for the simulated ECU functions. SUSAN advanced allows to simulation of vehicle functions of several electronic control units (ECU) on a single simulation system.
SUSAN advanced has the following interfaces:
2-lines display, push buttons as well as rotary knob
SUSAN connectis a configurable layer 3 automotive Ethernet switch. At it's core is a REALTEK RTL9068AA switch that enables users to not only switch messages between clients, but also mirror all messages to a single port for an easy analysis. It’s features can be configured via an external software.
SUSAN connect has the following interfaces:
Display and input keys, as well as rotary / push buttons
1x Ethernet 100 Base TX
1x Ethernet 1000 Base TX
4x Automotive Ethernet 100 Base T1
2x Automotive Ethernet 1000 Base T1
Power is supplied via two banana sockets.
Input Voltage Range
DC 12 V (9…15 V)
1.0 A max.
2x4mm banana socket
Working Temperature Range
0 °C to +50 °C, non-condensing
Storage Temperature Range
–10 °C to +50 °C
5 % to 85 %
IP Protection Class
Ca. 200 mm × 100 mm × 42 mm (w/h/d)
Cryptographic moduleis based on WIBU Systems CodeMeter Stick and provides a secure solution to store secret data of virtual vehicles. It enables the calculation and validation of cryptographic signatures, too. This is necessary for the calculation of message signatures. A single cryptographic module represents a virtual vehicle.
CodeMeter Sticks have been on the market as license dongle for years and are used successfully by numerous companies. The application has proven itself.
CAN interfaces extenders
In order to use simulations that depend on more than two CAN interfaces, SUSAN advanced has to be expanded by more CAN interfaces provided by PCAN-USB adapter to ensure proper interconnection with all parts in test setup and expected functionality.
Currently SUSAN advanced supports two versions of PCAN-USB adapter
PCAN-USB Pro FD
Both mentioned PCAN-USB adapters are supplied by Digiteq Automotive in a pre-configured state to ensure that they are seamlessly recognised.
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