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This document specifies how to extend the specifications in ISO 32000-2 by adding support for the use of the Secure Hash Algorithm – 3 (SHA-3) and SHAKE256 hash algorithms.

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