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Simon Josefsson's blog

blog.josefsson.org

2026

Soft-launching the DiffOS projectoriginal ↗
4 Sept 2026
Backup of S3 Objects Using rsnapshotoriginal ↗
17 Jan 2026
Debian Libre Live 13.3.0 is released!original ↗
13 Jan 2026
Debian Taco – Towards a GitSecDevOps Debianoriginal ↗
9 Jan 2026

2025

Reproducible Guix Container Imagesoriginal ↗
6 Dec 2025
Guix on Trisquel & Ubuntu for Reproducible CI/CD Artifactsoriginal ↗
2 Dec 2025
Container Images for Debian with Guixoriginal ↗
28 Nov 2025
Introducing the Debian Libre Live Imagesoriginal ↗
12 Nov 2025
Independently Reproducible Git Bundlesoriginal ↗
31 Jul 2025
Building Debian in a GitLab Pipelineoriginal ↗
30 Apr 2025
GitLab Runner with Rootless Privilege-less Capability-less Podman on riscv64original ↗
25 Apr 2025
Verified Reproducible Tarballsoriginal ↗
17 Apr 2025
On Binary Distribution Rebuildsoriginal ↗
31 Mar 2025
Reproducible Software Releasesoriginal ↗
24 Mar 2025

2024

OpenSSH and Git on a Post-Quantum SPHINCS+original ↗
23 Dec 2024
Guix Container Images for GitLab CI/CDoriginal ↗
18 Dec 2024
Towards Idempotent Rebuilds?original ↗
9 Jul 2024
Reproducible and minimal source-only tarballsoriginal ↗
13 Apr 2024
Towards reproducible minimal source code tarballs? On *-src.tar.gzoriginal ↗
1 Apr 2024
Apt archive mirrors in Git-LFSoriginal ↗
18 Mar 2024
Trisquel on arm64: Ampere Altraoriginal ↗
10 Jan 2024

2023

Validating debian/copyright: licensereconoriginal ↗
28 Dec 2023
Classic McEliece goes to IETF and OpenSSHoriginal ↗
9 Dec 2023
Trisquel on ppc64el: Talos IIoriginal ↗
1 Sept 2023
Enforcing wrap-and-sort -satboriginal ↗
16 Aug 2023
Coping with non-free software in Debianoriginal ↗
11 Jul 2023
Streamlined NTRU Prime sntrup761 goes to IETForiginal ↗
11 May 2023
How To Trust A Machineoriginal ↗
29 Apr 2023
A Security Device Threat Model: The Substitution Attackoriginal ↗
27 Apr 2023
Sigstore for Apt Archives: apt-cosignoriginal ↗
20 Apr 2023
More on Differential Reproducible Builds: Devuan is 46% reproducible!original ↗
17 Apr 2023
Sigstore protects Apt archives: apt-verify & apt-sigstoreoriginal ↗
15 Apr 2023
Trisquel is 42% Reproducible!original ↗
10 Apr 2023
OpenPGP master key on Nitrokey Startoriginal ↗
27 Mar 2023
Apt Archive Transparency: debdistdiff & apt-canaryoriginal ↗
1 Feb 2023
Understanding Trisqueloriginal ↗
22 Jan 2023

2022

Preseeding Trisquel Virtual Machines Using “netinst” Imagesoriginal ↗
30 Dec 2022
OpenPGP key on FST-01SZoriginal ↗
24 Dec 2022
Second impressions of Guix 1.4original ↗
19 Dec 2022
Guix 1.4 on NV41PZoriginal ↗
16 Dec 2022
Trisquel 11 on NV41PZ: First impressionsoriginal ↗
10 Dec 2022
How to complicate buying a laptoporiginal ↗
10 Dec 2022
On language bindings & Relaunching Guile-GnuTLSoriginal ↗
14 Oct 2022
Privilege separation of GSS-API credentials for Apacheoriginal ↗
20 Sept 2022
Static network config with Debian Cloud imagesoriginal ↗
22 Aug 2022
Towards pluggable GSS-API modulesoriginal ↗
14 Jul 2022

2021

What’s wrong with SCRAM?original ↗
8 Jun 2021
OpenPGP smartcard with GNOME on Debian 11 Bullseyeoriginal ↗
1 May 2021

2019

Passive Icinga Checks: icinga-pusheroriginal ↗
16 Dec 2019
OpenPGP smartcard under GNOME on Debian 10 Busteroriginal ↗
21 Jun 2019
Offline Ed25519 OpenPGP key with subkeys on FST-01G running Gnukoriginal ↗
21 Mar 2019
Installing Gnuk on FST-01G running NeuGoriginal ↗
21 Mar 2019
OpenPGP 2019 Key Transition Statementoriginal ↗
21 Mar 2019
Planning for a new OpenPGP keyoriginal ↗
20 Mar 2019

2017

Vikings D16 server first impressionsoriginal ↗
3 Aug 2017
OpenPGP smartcard under GNOME on Debian 9.0 Stretchoriginal ↗
18 Jun 2017
GPS on Replicant 6original ↗
4 Mar 2017

2016

Why I don’t Use 2048 or 4096 RSA Key Sizesoriginal ↗
3 Nov 2016

2015

Let’s Encrypt Clientsoriginal ↗
17 Dec 2015
Automatic Replicant Backup over USB using rsyncoriginal ↗
27 Nov 2015
Combining Dnsmasq and Unboundoriginal ↗
26 Oct 2015
Cosmos – A Simple Configuration Management Systemoriginal ↗
23 Sept 2015
SSH Host Certificates with YubiKey NEOoriginal ↗
16 Jun 2015
Scrypt in IETForiginal ↗
19 May 2015
Certificates for XMPP/Jabberoriginal ↗
12 May 2015
Laptop decision fatigueoriginal ↗
11 May 2015
Laptop indecisionoriginal ↗
24 Mar 2015
EdDSA and Ed25519 goes to IETForiginal ↗
4 Mar 2015
Laptop Buying Advice?original ↗
23 Feb 2015
Replicant 4.2 0003 on I9300original ↗
13 Jan 2015
OpenPGP Smartcards and GNOMEoriginal ↗
2 Jan 2015

2014

Dice Random Numbersoriginal ↗
11 Nov 2014
The Case for Short OpenPGP Key Validity Periodsoriginal ↗
26 Aug 2014
Wifi on S3 with Replicantoriginal ↗
10 Aug 2014
Replicant 4.2 0002 and NFC on I9300original ↗
5 Aug 2014
Offline GnuPG Master Key and Subkeys on YubiKey NEO Smartcardoriginal ↗
23 Jun 2014
OpenPGP Key Transition Statementoriginal ↗
22 Jun 2014
Creating a small JPEG photo for your OpenPGP keyoriginal ↗
19 Jun 2014
Replicant 4.2 on Samsung S3original ↗
27 Feb 2014
Necrotizing Fasciitisoriginal ↗
4 Jan 2014

2013

Replicant 4.0 on Samsung Galaxy S IIIoriginal ↗
11 Nov 2013
BLURB: Software repository metadata conventionoriginal ↗
24 Sept 2013

2012

Portable Symmetric Key Container (PSKC) Libraryoriginal ↗
11 Oct 2012
Using OATH Toolkit with Dropboxoriginal ↗
27 Aug 2012

2011

Small syslog serveroriginal ↗
12 Dec 2011
Unattended SSH with Smartcardoriginal ↗
11 Oct 2011
OpenWRT with Huawei E367 and TP-Link TL-WR1043NDoriginal ↗
22 May 2011
Introducing the OATH Toolkitoriginal ↗
20 Jan 2011
On Password Hashing and RFC 6070original ↗
7 Jan 2011

2010

GNU SASL with SCRAM-SHA-1-PLUSoriginal ↗
16 Nov 2010
Debian on Lenovo X201original ↗
25 Oct 2010
GS2-KRB5 using GNU SASL and MIT Kerberos for Windowsoriginal ↗
27 Sept 2010
Bridging SASL and GSS-API: GS2original ↗
13 Jul 2010
OpenWRT 10.03 “Backfire”original ↗
3 May 2010
GS2-KRB5 in GNU SASL 1.5.0original ↗
30 Mar 2010
Fellowship intervieworiginal ↗
8 Jan 2010

2009

Nordic Free Software Award 2009original ↗
15 Nov 2009
Storing OpenPGP keys in the DNSoriginal ↗
29 Oct 2009
Thread Safe Functionsoriginal ↗
23 Jun 2009
CACert and GnuTLSoriginal ↗
16 Apr 2009
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