ISO IEC 20248-2022 amd1-2024 PDF

Full title and description

ISO/IEC 20248:2022/Amd 1:2024 — Information technology — Automatic identification and data capture techniques — Digital signature data structure schema — Amendment 1: Domain authority identifier (DAID) specification for the GS1 legal entity identifier and encoding clarifications. This amendment updates ISO/IEC 20248:2022 with a DAID format for GS1 legal-entity identifiers and provides encoding and implementation clarifications to improve interoperability for digital signature data embedded in barcodes and RFID.

Abstract

This amendment defines a Domain Authority Identifier (DAID) specification that supports GS1 legal entity identifiers (used in GS1 digital-signature examples) and clarifies encoding rules for the digital signature data structure schema used in AIDC (automatic identification and data capture) applications such as barcodes and RFID. It is intended to remove ambiguities in how DAIDs and related binary values are encoded and represented so implementers can achieve consistent signing and verification behaviour.

General information

• Status: Published.
• Publication date: October 2024 (Amendment published Oct 2024 / listed with dates 08–09 Oct 2024 in catalogues).
• Publisher: ISO/IEC (published under the joint ISO/IEC JTC 1/SC 31 committee).
• ICS / categories: 35.040.50 — Automatic identification and data capture techniques.
• Edition / version: Edition 2 (ISO/IEC 20248:2022) — Amendment 1 published 2024 (ISO/IEC 20248:2022/Amd 1:2024).
• Number of pages: 2 pages (amendment document).

Scope

This amendment applies to ISO/IEC 20248:2022 and specifies how a Domain Authority Identifier (DAID) shall be constructed and encoded when representing GS1 legal-entity identifiers within the digital signature data structure schema. It also supplies clarifications to ambiguous encoding rules from the base document to ensure consistent handling of binary encodings, string forms and language/metadata tags used in signature descriptors for constrained AIDC carriers.

Key topics and requirements

• Introduction of a DAID specification tailored to GS1 legal-entity identifiers (examples and form for expressing GS1 party identifiers within the DAID).
• Encoding clarifications for digital-signature data fields (binary encodings, type identifiers, and unambiguous representation rules to avoid interoperability issues).
• Clarified rules for representing GS1 identifiers in DAID (usage examples reference GS1 Party GLN examples used in GS1 digital-signature practice).
• Guidance on language-tag construction and metadata fields within the signature descriptor to align with existing language-tag standards and reduce implementation divergence.
• Normative amendment to ISO/IEC 20248:2022 — implementers must apply these DAID and encoding rules when interoperating with systems expecting the amended schema.

Typical use and users

Primary users are implementers and integrators of AIDC solutions: barcode and RFID system vendors, software developers building signing/verification tools for constrained carriers, GS1 solution architects, supply-chain operators, and certification/verification service providers. The amendment is intended for organizations that embed or verify digital signatures within barcodes and RFID where GS1 identifiers are used to indicate the signing authority.

Related standards

Key related documents include the base standard ISO/IEC 20248:2022 (Digital signature data structure schema) and references to public-key infrastructure standards (ISO/IEC 9594‑8 / X.509) that underpin the signature mechanisms. The amendment is also relevant to GS1 Digital Signatures guidance and GS1 identifier standards (GLN / Party identifiers and GS1’s work on LEI services).

Keywords

Digital signature, DAID, Domain Authority Identifier, GS1, GLN, Party GLN, legal entity identifier, AIDC, barcode, RFID, encoding clarifications, ISO/IEC 20248, signature data description, constrained carriers.

FAQ

Q: What is this standard?

A: It is Amendment 1 to ISO/IEC 20248:2022 (published Oct 2024) that adds a DAID specification for GS1 legal-entity identifiers and provides encoding clarifications for the digital signature data structure schema used in AIDC scenarios.

Q: What does it cover?

A: It covers the DAID format and representation when the signing authority is identified with GS1 identifiers, plus precise encoding and metadata/ language-tag clarifications to ensure deterministic signing and verification on limited-capacity carriers like barcodes and RFID.

Q: Who typically uses it?

A: Vendors and developers of barcode/RFID signing and verification solutions, GS1 implementers, supply-chain operators, and organizations that need to embed or validate cryptographic signatures in AIDC contexts.

Q: Is it current or superseded?

A: As of its publication in October 2024 the amendment is published and current; it is an amendment to (not a replacement of) ISO/IEC 20248:2022. Users should consult the base standard together with this amendment for the complete normative text.

Q: Is it part of a series?

A: Yes — it is an amendment (Amd 1) to ISO/IEC 20248:2022 (the digital signature data structure schema) produced under ISO/IEC JTC 1/SC 31 (AIDC technical committee). Implementers should use the base standard plus this amendment.

Q: What are the key keywords?

A: DAID, GS1, GLN, digital signature, encoding, AIDC, barcode, RFID, ISO/IEC 20248.