ISO/IEC 18014-4:2015

Name: ISO/IEC 18014-4:2015 — Information technology — Security techniques — Time-stamping services — Part 4: Traceability of time sources
SKU: ISO/IEC 18014-4:2015
Price: 25200 RUB
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Information technology — Security techniques — Time-stamping services — Part 4: Traceability of time sources

Название (английский):

Information technology — Security techniques — Time-stamping services — Part 4: Traceability of time sources

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 15 апреля 2015 г.
Издание:: ISO/IEC IS 18014 edition 1 version 1
ICS:: 35.030

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Описание (английский):

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.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview - ISO/IEC 18014-4:2015 (Time source traceability)

ISO/IEC 18014-4:2015 is the Part 4 component of the ISO/IEC 18014 family that addresses traceability of time sources for time‑stamping services. The standard defines the role and functionality of the Time Assessment Authority (TAA), describes an architecture for delivering trusted time to a Time‑Stamping Authority (TSA), and provides technical guidance to ensure the TSA’s clock is provably correct and traceable to a national or international time scale (UTC(k)).

Key search terms: ISO/IEC 18014-4:2015, time-stamping, traceability, TAA, TSA, UTC(k), time offset certificate, trusted time source.

Key technical topics and requirements

TAA functionality and architecture

Defines how a TAA audits and optionally disseminates time to a TSA.
Describes the time traceability chain linking downstream clocks to a timing centre.

TAA clock requirements

Configuration, synchronization with UTC(k), accuracy expectations and measurement retention.
Use of multiple TAA clocks for redundancy (backup clocks).

Time audit and certification

Time audit policy, authentication of TSA clocks, measurements of time offsets.
Issuance of time offset certificates that attest measured offsets between TSA and TAA clocks.
Record retention and measures against extraordinary discrepancies.

Time dissemination controls

Policies for distributing time, authentication of disseminated time, and measures to prevent falsification.

Traceability chains

Use of timing centres, NMIs, and alternative chains (e.g., GNSS receivers) to establish traceability to UTC(k).

Referenced protocols and tools

Network Time Protocol (NTP), GNSS timing receivers, and standards referenced such as ISO/IEC 18014‑1 and ITU‑R TF.1876.

Practical applications and who uses this standard

Organizations implementing or operating time-stamping services (TSAs) that must ensure the correctness and legal/technical verifiability of timestamps.

Operators of Time Assessment Authorities (TAAs) and national timing centres or NMIs that provide traceable time services.

Security architects, digital‑signature providers, compliance teams and auditors who require documented traceability of timestamps for legal, regulatory or forensic purposes.

IT teams managing time synchronization for services where provable timing (audit logs, signed transactions, legal evidence) is critical.

Practical outcomes include auditable time offset certificates, hardened time dissemination workflows, and documented traceability chains to UTC(k).

Related standards and references

ISO/IEC 18014-1: Framework for time-stamping services

ISO/IEC 18014-2 and -3: Mechanisms for producing time-stamp tokens

ITU‑R TF.1876: Trusted time source guidance

Other metrology and time‑format standards cited (e.g., ISO 8601 references)

ISO/IEC 18014-4:2015 provides the technical and procedural basis to build trusted, auditable time infrastructures that underpin reliable time-stamping across security, legal, and operational domains.

ISO/IEC 18014-4:2015

Abstract

Похожие стандарты

Overview - ISO/IEC 18014-4:2015 (Time source traceability)

Key technical topics and requirements

Practical applications and who uses this standard

Related standards and references

Технические детали

BS ISO/IEC 18014-2:2021-TC

Tracked Changes. Information security. Time-stamping services. Mechanisms producing independent tokens.

ISO/IEC 18014-1:2008/Amd 1:2025

Information technology — Security techniques — Time-stamping services — Part 1: Framework — Amendment 1

ISO 8601-2:2019/Amd 1:2025

Date and time — Representations for information interchange — Part 2: Extensions — Amendment 1: Canonical exp…