Technologies de l'information — Techniques de sécurité — Services d'horodatage — Partie 4: Traçabilité des sources du temps

ISO/IEC 18014:2015

- defines the functionality of the time assessment authority (TAA),

- describes an overall architecture for providing the time to the time-stamping authority (TSA) and to guarantee the correctness of it through the use of the TAA, and

- gives technical guidelines for the TAA to provide, and to provide assurance in, a trusted time source to the TSA.