Service Discovery über IP ist derzeit eines der am häufigsten verwendeten Protokolle in Kfz-Ethernet-Netzwerken, da es die Flexibilität einer dienstorientierten Kommunikation anstelle der normalen festen Kommunikation bietet.
Es bietet auch eine Möglichkeit, zwischen verschiedenen Automotive-Stacks zu kommunizieren, "z.B. klassisches AUTOSAR, adaptives AUTOSAR, GENIVI, etc ..."
Das Protokoll zur Dienstentdeckung arbeitet im dezentralen Kommunikationsmodus:
  • Veröffentlichen/Abonnieren von benötigten Daten-"Ereignissen"
  • Anfrage/Antwort "Methoden mit Rückgabewert"
  • Feuer und Flamme für "Methoden ohne Rückgabewert"

Wie es funktioniert

Der Server kann den Dienst anbieten und der/die Client(s) wird/werden die Daten des Dienstes abonnieren, dann wird der Server die Daten nur an die abonnierten Clients senden.

Schließlich werden mehrere Dienste von verschiedenen Steuergeräten angeboten, und jeder Dienst wird von verschiedenen Steuergeräten als Verbraucher der Dienstdaten genutzt/abonniert.

In der klassischen Autosar-Welt geschieht dies mit Hilfe der Module Service Discovery "SD" und Socket Adapter "SoAd".

SD steuert SoAd-Socket-Verbindungen, um sie je nach Server- oder Client-Status zu öffnen und zu schließen.

Wenn der Dienst A vom Server angeboten und vom Client A/B in Anspruch genommen wird, öffnet der SD auf der Serverseite eine Socket-Verbindung, die für den Sendepfad der Dienstdaten zuständig ist, und der SD auf der Clientseite tut dasselbe für den Empfangspfad, so dass die Daten an die oberen Schichten und die Anwendung weitergeleitet werden können, um die Daten zu nutzen.

Dieser effiziente Ansatz ermöglicht die Übertragung und den Empfang nur der benötigten Daten an die relevanten Clients und reduziert so die Netzwerkbandbreite und die Rechenleistung der Steuergeräte.

Sicherheitsanalyse

Das Protokoll ist zwar weit verbreitet und äußerst effizient, doch fehlt ihm ein sehr wichtiger Aspekt der Fahrzeugkommunikation, nämlich die Sicherheit.

Das Protokoll arbeitet derzeit im Klartextmodus, und ihm fehlen sehr wichtige Funktionen wie Authentizität des Absenders, Integrität der Daten und Vertraulichkeit der Daten.

Das Protokoll selbst sieht keine Sicherheitsmaßnahmen vor, erschwert aber durch seine Implementierung auch die Umsetzung anderer Sicherheitsprotokolle.

SD ist ein dezentralisiertes Protokoll, das hauptsächlich das UDP-Protokoll, Multicast und N:M-Kommunikation verwendet, so dass Protokolle wie TLS hier nicht effektiv eingesetzt werden können, da es einen 1:1-Sitzungsaufbau über TCP benötigt.

Jeder, der Zugang zum Ethernet-Netzwerk hat und über die richtigen Werkzeuge verfügt, kann den Bus ausspionieren, um zu verstehen, welche SD-Dienste im Auto laufen, und dann damit beginnen, Pakete in dasselbe oder ein anderes Auto desselben Modells einzuspeisen.

Verfügbarer Workaround, der den Datendurchsatz beeinträchtigt

Bei der Datenübertragung über TCP muss der anfragende Client eine Verbindung mit dem Server herstellen. In diesem Fall kann TLS verwendet werden, allerdings verringert sich der Datendurchsatz, da der Server alle Clients manuell ansprechen muss, um die Daten zu senden.

 

Inhaltsübersicht

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General Notice

We prepare the content on this website with great care and to the best of our knowledge. Nevertheless, we do not assume any liability for the timeliness, completeness, or accuracy of the information provided.

Haftungsbeschränkung für interne Inhalte

As a service provider, we are responsible for our own content on these pages under applicable German law. However, we are not obligated to monitor transmitted or stored third-party information or to investigate circumstances indicating unlawful activity. Obligations to remove or block the use of information under general laws remain unaffected. Any liability in this respect is only possible from the time we become aware of a specific legal violation. Upon notification of such violations, we will remove the content immediately.

Haftungsbeschränkung für externe Links

This website contains links to third-party websites (“external links”). We have no control over their content; therefore, we assume no liability for such external content. The respective provider or operator of the linked pages is always responsible for their content. At the time of linking, no legal infringements were recognizable to us. If we become aware of any legal violations, we will remove such links without delay.

Urheberrecht

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Data Protection

Visiting our website may result in the storage of access information on our server (e.g., date, time, and page viewed). This data is not personal and does not identify you. If personal data (such as name, address, or email) is collected, this is done—where possible—only with your prior consent. Personal data will not be disclosed to third parties without your explicit consent.

Please note that data transmission over the Internet (e.g., email communication) can have security gaps. Complete protection of data from access by third parties is not possible. We are not liable for damages resulting from such security vulnerabilities.

Unsolicited Advertising

The use of contact details published on this website for sending unsolicited advertising or information materials is expressly prohibited. We reserve the right to take legal action in the event of unsolicited promotional information (e.g., spam emails).

Imprint​

VxLabs GmbH
Franz-Mayer-Str. 1
93053 Regensburg

Contact: [email protected]
Commercial register District Court Regensburg HRB 19099
USt-IdNr.: DE350861467
Managing Director: Mostafa Elkoumy

1) Introduction

At VxLabs (“we”, “us”, “our”), we are committed to protecting the privacy of our employees, suppliers, and customers. This Policy explains how we collect, use, store, share, and protect your personal data in line with the General Data Protection Regulation (GDPR) and applicable data protection laws.

2) Data Controller

VxLabs is the data controller for the personal data described in this Policy.
Contact: [email protected]

3) What is “personal data”?

Personal data” means any information relating to an identified or identifiable person—either directly (e.g., name) or indirectly (e.g., an ID number, online identifier, or one or more factors specific to identity).

4) What data we collect

Depending on your relationship with us, we may collect and process:

  • Identity Data (name, title, employee ID).

  • Contact Data (email, phone, postal address).

  • Financial Data (payment, invoicing details for suppliers/B2B customers).

  • Transaction Data (orders, services provided, payments).

  • Professional Data (for employees: employment history, qualifications, performance).

  • Technical Data (device information, IP address, logs, browsing events related to our services).

  • Marketing & Communication Data (preferences, subscriptions).

5) How we collect your data

  • Directly from you (recruitment and HR processes, supplier onboarding, customer engagements, forms, emails).

  • Automatically (through systems you access—e.g., logs, cookies, telemetry).

  • From third parties (e.g., background screening providers for employment, credit reference agencies for suppliers, public sources as permitted by law).

6) Why we use your data (purposes)

  • Employee Management (recruitment, payroll, benefits, performance, HR administration).

  • Supplier & Customer Management (account setup, contracts, orders, payments, relationship management).

  • Communication (service updates, notices, support).

  • Compliance (legal/regulatory obligations, record-keeping).

  • Business Operations (security, quality, analytics, service improvement).

  • Marketing (with your consent where required).

7) Legal bases for processing

  • Employee Management (recruitment, payroll, benefits, performance, HR administration).

  • Supplier & Customer Management (account setup, contracts, orders, payments, relationship management).

  • Communication (service updates, notices, support).

  • Compliance (legal/regulatory obligations, record-keeping).

  • Business Operations (security, quality, analytics, service improvement).

  • Marketing (with your consent where required).

8) Sharing your data

We may share personal data with:

  • Service providers / processors that support our operations (IT, HR/payroll, hosting, analytics, payment).

  • Professional advisers (legal, accounting) and authorities/regulators where required by law.

  • Transaction parties (e.g., in a merger, acquisition, or asset sale, subject to safeguards).

  • Others with your consent or as otherwise permitted by law.

9) International transfers

If personal data is transferred outside the EEA/UK, we implement appropriate safeguards (e.g., adequacy decisions, Standard Contractual Clauses plus supplementary measures where necessary).

10) Retention

We keep personal data only as long as necessary for the purposes above and to meet legal, accounting, or reporting requirements. Retention periods vary by data category and legal context. When data is no longer required, we securely delete or anonymise it.

11) Security

We apply technical and organisational measures to protect personal data (access controls, encryption where appropriate, least-privilege policies, vendor due diligence). No method of transmission or storage is completely secure; we work to mitigate risks and respond promptly to incidents.

12) Cookies & online activity

Our website uses cookies and similar technologies to improve functionality and user experience. Some cookies are essential; others (e.g., analytics/marketing) are optional and require consent.

  • You can control cookies via our cookie banner and your browser settings. Blocking some cookies may affect site functionality.

  • Website analytics: We use [insert analytics service, e.g., Matomo/Google Analytics 4] to understand traffic and improve services. Data is aggregated or pseudonymised where possible. See our Cookie Notice for details (types, purposes, retention).

13) Your rights (GDPR)

You may have the following rights, subject to conditions and local law:

  • Access to your personal data and a copy of it.

  • Rectification of inaccurate or incomplete data.

  • Erasure (“right to be forgotten”) where applicable.

  • Restriction of processing in certain cases.

  • Objection to processing based on legitimate interests and to direct marketing.

  • Data portability (where processing is based on consent or contract and carried out by automated means).
    To exercise your rights, contact [email protected]. We may need to verify your identity.

You also have the right to lodge a complaint with a supervisory authority—typically in your EU/EEA Member State of residence, place of work, or where an alleged infringement occurred.

14) Third-party links

Our websites may contain links to third-party sites. Those sites operate under their own privacy policies; we are not responsible for their practices. We encourage you to review their privacy notices.

15) Children’s data

Our services are not directed to children, and we do not knowingly process children’s personal data without appropriate legal basis and parental permissions where required.

16) Changes to this Policy

We may update this Policy from time to time. The “Last updated” date above reflects the latest version. Material changes will be highlighted where appropriate.

17) Contact

Questions, requests, or concerns:
Email: [email protected]

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