[Pkg-swan-devel] Bug#1121988: strongswan: Please enable the ML-KEM plugin

Tobias Brunner tobias at strongswan.org
Fri Dec 5 16:48:11 GMT 2025


Hi Tobias,

>>> According to the upstream documentation, strongSwan's
>>> OpenSSL plugin does not support ML-KEM (yet), even if the OpenSSL
>>> library present would do so.
>>
>> Which documentation are you referring to?  The plugin supports ML-KEM
>> via OpenSSL 3.5+ since 6.0.2.  Obviously, doesn't help if you use Debian
>> stable as that ships 6.0.1, but it's definitely supported upstream and
>> in Debian testing.
> 
> I was referring to https://docs.strongswan.org/docs/latest/config/proposals.html#_post_quantum_key_exchange_methods,
> which currently states:
> 
>> The openssl plugin currently only supports ML-KEM via AWS-LC, not via OpenSSL.

Ah, thanks.  I've removed that note.

Regards,
Tobias



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