Abstract
This part of ISO/IEC 9798 specifies entity authentication mechanisms using a cryptographic check function. Two mechanisms are concerned with the authentication of a single entity (unilateral authentication), while the remaining are mechanisms for mutual authentication of two entities.
The mechanisms specified in this part of ISO/IEC 9798 use time variant parameters such as time stamps, sequence numbers, or random numbers, to prevent valid authentication information from being accepted at a later time or more than once.
Source: https://www.iso.org/obp/ui/#iso:std:iso-iec:9798:-4:ed-2:v1:en
General Information
ICT rolling plan topic: Cybersecurity
SDO: IEC