Key Encapsulation Mechanism Algorithms by NIST Security Level

SOUMYA HOSMANI

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Apr 22, 2025, 12:57:30 AM4/22/25

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Hi all,

I've reviewed the CRYSTALS-Kyber NIST reference implementation from 2022, but I couldn't locate the updated source code that aligns with the ML-KEM specification (FIPS 203, 2024).

Could anyone please share the link to the latest NIST source code?

Thank you in advance!

Soumya

Stephan Mueller

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Apr 22, 2025, 2:42:11 AM4/22/25

to pqc-forum, SOUMYA HOSMANI

Am Dienstag, 22. April 2025, 06:57:30 Mitteleuropäische Sommerzeit schrieb
SOUMYA HOSMANI:

Hi SOUMYA,

> Hi all,
>
> I've reviewed the CRYSTALS-Kyber NIST reference implementation from 2022,
> but I couldn't locate the updated source code that aligns with the ML-KEM
> specification (FIPS 203, 2024).
>
> Could anyone please share the link to the latest NIST source code?

https://github.com/pq-crystals/kyber/tree/standard

>
> Thank you in advance!
> Soumya

Ciao
Stephan

Roderick Chapman

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Apr 22, 2025, 4:24:32 AM4/22/25

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You should also have a look at

https://github.com/pq-code-package/mlkem-native

which is significantly better documented than the PQCrystals code, has CBMC proofs of type safety for all of the C code, and optimized assembly language back-ends for AArch64 and x86_64 AVX2.

- Rod

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