Antal, EugenZajac, PavolDesenclos, CamillePierrot, Cécile2026-06-152026-06-152026-06-221736- 6305https://hdl.handle.net/10062/122063HCPortal is an online portal focusing on historical cryptology. It has now been in active development for ten years. During the development, many new changes and additional modules were added. We present the current state of the portal, with a focus on an overview of the main modules and their user interface specifics.enAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttps://creativecommons.org/licenses/by/4.0/cipher keydatabaseeducationhistorical cipherArticle