| Issue |
EPJ Web Conf.
Volume 337, 2025
27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)
|
|
|---|---|---|
| Article Number | 01179 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/epjconf/202533701179 | |
| Published online | 07 October 2025 | |
https://doi.org/10.1051/epjconf/202533701179
WLCG transition from X.509 to Tokens: Progress and Outlook
1 Science and Technology Facilities Council (UKRI-STFC), United Kingdom
2 Istituto Nazionale di Fisica Nucleare (INFN-CNAF), Italy
3 European Organization for Nuclear Research (CERN) Switzerland
4 University of Lancaster, United Kingdom
5 Fermi National Accelerator Laboratory (FNAL), United States
6 Nationaal Instituut voor Subatomaire Fysica (Nikhef), Netherlands
* e-mail: thomas.dack@stfc.ac.uk
Published online: 7 October 2025
Since 2017, the Worldwide LHC Computing Grid (WLCG) has been working towards enabling token-based authentication and authorization throughout its entire middleware stack.
Taking guidance from the WLCG Token Transition Timeline, published in 2022, substantial progress has been achieved not only in making middleware compatible with the use of tokens, but also in understanding the limitations of the WLCG Common JWT Profiles, first published in 2019. Significant scalability experience has been gained from Data Challenge 2024, during which millions of files were transferred with tokens used as credentials - a significant percentage of the total transfers completed.
Besides describing the state of affairs in the transition to tokens, revisions to the WLCG token profile, and the evolving road maps, this contribution also covers the corresponding transition from VOMS-Admin to INDIGO-IAM services, with continuing improvements in terms of functionality as well as deployment.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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