BS ISO/IEC 18014-4:2015 BS Standards Publication Information technology - Security techniques Time- stamping services Part 4: Traceability of time sources bsi. ..making excellenCe a habit. BSISO/IEC18014-4:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO/IEC 18014-4:2015. The UK participation in its preparation was entrusted to Technical Committee IST/33, IT - Security techniques. A list of organizations represented onthis committeecan be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015 ISBN9780580835520 ICS 35.040 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30April 2015 Amendments issued since publication Date Textaffected BS ISO/IEC 18014-4:2015 ISO/IEC 18014-4 INTERNATIONAL STANDARD First edition 2015-04-15 Information technology Security techniques Time-stamping services - Fraceability of time sources Technologies de I'information -Techniques de sécuriteServices d'horodatage- Partie 4: Tracabilite des sources du temps Reference number IEC IS0/IEC 18014-4:2015(E) ISo @IS0/IEC2015