Update of opensc-build?


Many thanks in advance for your help.

I saw that you provide a build for open-sc
This build is based on version 0.20.1 if i have correctly understood.

I’m not sure to have fully understood the progress on ecc topics, but I understand that version 0.20.3 will allow us to use ecc keys already residing on the token.
Is it correct ?
It seems that we will be able to use Curve25519 or NIST P256 with pkcs11-tool ?
Do you plan to provide a 0.20.3 builds ?

Since I understand that we need to wait for 0.20.3 release to be able to use Strongswan with token using ecc curves (Curve25519 or NIST P256).

Many thanks in advance.

Best regards.


if there are new releases that help users with features we will provide new builds, sure :slight_smile: Let us know if this is the case and what you need exactly. If I remember correctly this should not be necessary anymore though, as OpenSC will provide .deb themseves.

Hi @nitroalex,

Many thanks for your answer and sorry for the delay of my answer.
I have probably misunderstood something.

I would like to use Strongswan with a NitrokeyStart using ecc keys.
If I have correctly understood, OpenSc 0.20 is not able to manage Ecc keys but (and I can’t remember where I saw that) it seems that release 0.20.3 could.

Could you help me to clarify this point ?

Best regards.

do you have a link to the release? I can not see any such release and without we will probably not update our opensc-build repo.

Generally, you may can build the current master of the GitHub repo using this script and changing the version with “master”. But I did not test it and you should have a look if you are fine with the change made on your system.

Kind regards

@szszszsz didn’t you said once that OpenSC will get nightly .deb files?


The link is the following one : https://packages.debian.org/bullseye/opensc

I downloaded the source and rebuild the version on my Debian10 system.
Apparently without any problem. But I’m still not able to exchange with my NitrokeyStart filled with ecc keys.

Do you know if we are able to sign or decipher messages/keys with Opensc and ecc keys ?

Kind regards.



you are probably confusing Debian’s versioning with the one of OpenSC. 0.20.0-3 means that it is the third package build for Debian (by Debian’s maintainer) of the 0.20.0 version of OpenSC. So for our side there is nothing new to build.

As far as I know there is a open Pull Request which should add most of the needed features for the NK Start regarding ed25519, but there might be missing some things. They are all tracked at OpenSC

Kind regards


Absolutely I was confusing.
Many thanks for the link. If i have correctly understood, I shouldn’t wait for too long.



I think I have proposed to add packages to our Ubuntu’s PPA channel, but this was left at the idea stage.
It might be done by OpenSC’s CI too - I will ask.