Abstract

 Preview

This document specifies the elements defined in the international standards of ISO/ITU-T, ETSI and IETF RFC that enable at least a proof of existence of data objects and digital signatures and the preservation of the validity status of digital signatures over a long period of time used in validation.

It provides the definitions of the proof of existence (PoE) attributes and clarification of the usage of (external) PoE objects, with digital signatures and trusted time values, which have already existed and can be used by the PoE attributes pointing to (external) PoE objects used in long term signature validation or preservation.


General information 

  • Status
     :  Published
    Publication date
     : 2019-08
  • Edition
     : 1
    Number of pages
     : 37
  • Technical Committee
     : ISO/TC 154 Processes, data elements and documents in commerce, industry and administration
  • ICS
     :
    35.240.63 IT applications in trade

Buy this standard

Format Language
PDF + ePub
Paper
  • CHF166

Life cycle


Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.

  2. Store
  3. Standards catalogue
  4. TC
  5. ISO/TC 154
  6. ISO 14533-4:2019