ISO/IEC 18014 ''Information technology — Security techniques — Time-stamping services'' is an international standard that specifies time-stamping techniques. It comprises four parts: * ''Part 1: Framework'' * ''Part 2: Mechanisms producing independent tokens'' * ''Part 3: Mechanisms producing linked tokens'' * ''Part 4: Traceability of time sources''ISO/IEC 18014-4:2015
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Part 1: Framework

In this first part of ISO/IEC 18014, several things are explained and developed: * The identification of the objectives of a time authority. * The description of a general model on which time stamping services are based. * The definition of time stamping services. * The definition of the basic protocols of time stamping. * The specifications of the protocols between the involved entities. Key words: audit,

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Part 2: Mechanisms producing independent tokens

A time-stamping service provides evidence that a data item existed before a certain point in time. Time-stamp services produce time-stamp tokens, which are data structures containing a verifiable cryptographic binding between a data item's representation and a time-value. This part of ISO/IEC 18014 defines time-stamping mechanisms that produce independent tokens, which can be verified one by one.

Part 3: Mechanisms producing linked tokens

This part of ISO/IEC 18014: * Describes a general model for time-stamping services producing linked tokens. * Describes the basic components used to construct a time-stamping service of this type. * Defines the data structures used to interact with a time-stamping service of this type. * Describes specific instances of such time-stamping services.

References

Cryptography standards #18014 {{crypto-stub