5. Digital signature enhancements

5.1 Support for secure hash algorithm 3 (SHA-3) hash family

Delete all of clause 5.1.3 as follows:

5.1.3 Changes to ISO 32000-2:2020, Table 256 — Entries in a signature reference dictionary

In ISO 32000-2:2020, Table 256 (“Entries in a signature reference dictionary”; 12.8.1, “General”), the following text is added to the end of the current DigestMethod value text:

(PDF 2.x) In addition to those values previously defined, this value may be one of SHA3-256, SHA3-384, SHA3-512 or SHAKE256. Default value for PDF 2.0: SHA256 (PDF 2.0).

Last modified: 11 October 2023