ISO/TS 32002:2022, Document management – Portable Document Format – Extensions to Digital Signatures in ISO 32000-2 (PDF 2.0)

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

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