Ruby Issue Tracking System

08/10/2026

01:56 PM Ruby Feature #22068: Adding post-quantum cryptography (PQC) support across Ruby standard libraries

Based on the [Dev Meeting on 6th August 2026](https://bugs.ruby-lang.org/issues/22221#note-5), I updated this ticket's first comment, adding the following sections.
* What is PQC?
* Goal of the ticket
* PQC, non-PQC hybrid and multi... jaruga (Jun Aruga)

01:50 PM Ruby Feature #22068 (Assigned): Adding post-quantum cryptography (PQC) support across Ruby standard libraries

jaruga (Jun Aruga)

07/31/2026

03:41 PM Ruby Misc #22221: DevMeeting-2026-08-06

* [Feature #22068] Adding post-quantum cryptography (PQC) support across Ruby standard libraries (jaruga)
* I explain the feature with my motivations, and answer questions from other developers.
* I want to share how to proceed for p... jaruga (Jun Aruga)

07/30/2026

08:09 PM Ruby Feature #22068: Adding post-quantum cryptography (PQC) support across Ruby standard libraries

@seki or other ruby/drb maintainers, I opened the issue ticket <https://github.com/ruby/drb/issues/52>, sending the PR. The PR link is on the issue ticket. I would appreciate your reviews for the PR. jaruga (Jun Aruga)

05/15/2026

05:26 PM Ruby Feature #22068: Adding post-quantum cryptography (PQC) support across Ruby standard libraries

hsbt (Hiroshi SHIBATA) wrote in #note-4:
> Thanks for your detailed summary. I will handle rubygems and bundler.
Thanks! jaruga (Jun Aruga)

05:26 PM Ruby Feature #22068: Adding post-quantum cryptography (PQC) support across Ruby standard libraries

> As I heard from my colleagues working for OpenSSL, that SLH-DSA is not ready to be used, we can ignore SLH-DSA for now.
Sorry, the above was wrong or outdated information.
SLH-DSA is ready to use for signature use case (but not for... jaruga (Jun Aruga)

05/13/2026

02:43 PM Ruby Feature #22068 (Assigned): Adding post-quantum cryptography (PQC) support across Ruby standard libraries

## Summary and motivation
### What is PQC?
Post-quantum cryptography (PQC) means cryptography algorithm which people can safely use after (post) quantum computing is practically used like today's personal computer in the future.
... jaruga (Jun Aruga)

09/04/2025

03:14 PM Ruby Bug #21534 (Closed): ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

This issue was fixed by the above PR.
jaruga (Jun Aruga)

01:55 PM Ruby Bug #21534 (Assigned): ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

jaruga (Jun Aruga)

09/03/2025

05:11 PM Ruby Bug #21534: ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

All right! I am working on the following PR to fix this issue.
https://github.com/ruby/ruby/pull/14435
jaruga (Jun Aruga)