Gnuk 2.2

[NIIBE Yutaka]

Hello,

Gnuk 2.2 was released.

        tag release/2.2
        Tagger: NIIBE Yutaka <gniibe at fsij.org>
        Date:   Sat Apr 20 11:22:21 2024 +0900
        commit de9652726b1ce52b21e939c6989dda0268b5c640

>From NEWS, here are major changes in Gnuk 2.2:

* Modular inverse by safegcd256 for Ed25519 and X25519 computation

Ed25519 and X25519 computation are now a bit faster with safegcd256.


* X25519 with 2^25.5 limb

X25519 computation is done with 2^25.5 limb.  It may be better on
other MCUs.


Not much change, but small improvements for ECC.

I have been considering PQC support.  I tested Kyber 768 on GD32VF103,
and I realized that it's fast enough.  But it requires more memory space
than ECC.  It would be better/easier to use vendor specific protocol to
minimize memory usage.

BTW, I submitted a talk proposal of Gnuk for Debconf24.

Happy Hacking,
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