A new release of the tkeyclient Go module and the dependent client apps is now available. In this maintenance release tkeyclient handles the TKey Unlocked product ID (8) as Bellatrix. This ensures that TKey Unlocked users keep their keys even after the USS digest changes introduced in the previous release . More information about UDI handling can be found in the Developer Handbook .
We recently discovered a security problem in the tkeyclient Go module used by several of our client apps. All versions of tkeyclient up to and including v1.2.0 are affected.
Usually at this time of year we look back and summarize what has happened during the year. We will do the same this year and also start a new tradition by publishing a newsletter. The idea is to have more frequent updates on what is happening at Tillitis by writing a newsletter 3-4 times per year. The newsletter will be published on our blog and sent out on the mailing list, Tillitis announce .
In April, some of us attended the foss-north 2025 conference in Gothenburg. We had a very good time, listened to interesting talks, and met many friends.
While we are working on updating TKey and adding new features, we also take the opportunity to update the design and platform on our websites; tillitis.se and bugbounty.tillitis.se. Both sites are now statically generated with Hugo .
As the year draws to a close, it’s natural to reflect on the past 12 months. 2024 marked the second full year of operations for Tillitis, and while it had its challenges, it was also a year of progress and learning.
For third year in row, Tillitis sponsors Advent of Code . Advent of Code is an Advent calendar of small programming puzzles for a variety of skill levels that can be solved in any programming language you like. It’s made by Eric Wastl .
Tillitis has always been committed to open source . As we promised earlier, we continue to be committed to open licenses. We originally chose “GPLv2-only” as the license for our Verilog and source code. We are now changing to the more permissive BSD 2-clause license for all Verilog and source code. The hardware (PCB, PCBA) license remains the same: CERN Open Hardware License Version 2 - Strongly Reciprocal.
We will be at sec-t in Stockholm this year and MC from our development team will speak on the community day about verifying the TKey .
What is a TRNG, what is its purpose, and how does it work? These are the questions we try to answer in this blog post.
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