ISO/TS 32002:2022 ドキュメント管理 — Portable Document Format — ISO 32000-2 のデジタル署名の拡張 (PDF 2.0) | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 171, Document management applications, Subcommittee SC 2, Document file formats, EDMS systems and authenticity of information.

Introduction

Digital signatures are a fundamental part of the ISO 32000 series. ISO 32000-2 contains updated digital signature support, but in the time since that standard was published, new algorithms have been developed or risen to prominence.

To ensure that PDF remains relevant in the fast-moving world of cryptography and remains current with best practices, these techniques should be refreshed and updated regularly. This document builds upon the mechanisms present in ISO 32000-2 and extends and enhances them to meet the latest needs of the industry.

1 ​Scope

This document specifies how to extend the ISO 32000-2 specification by adding support for the following:

• use of the NIST P-curve family of elliptical curves for digital signatures;
• use of the Brainpool family of elliptical curves for digital signatures;
• use of Edwards Curve (EdDSA) Ed448 and Ed25519 families of elliptical curves for digital signatures.

This document does not specify the following:

• specific processes for converting paper or electronic documents to the PDF file format;
• specific technical design, user interface implementation, or operational details of rendering;
• specific physical methods of storing these documents such as media and storage conditions;
• methods for validating the conformance of PDF files or PDF processors;
• required computer hardware and/or operating system.

2 ​Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 ​Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography