Guilhem N

PhD student in cryptography at PQShield and University of Rennes. I love software security, cryptography, and open source.

[PQShield @PqShield]

Google recently adjusted its threat model, targeting 2029 for full #PQC migration. This isn’t just an internal deadline, it’s a signal to the entire global supply chain.

We break down why the "2029" timeline is so significant.
https://t.co/M7JrJYiEux

#PostQuantum #CyberSecurity

[PQShield @PqShield]

Our Cryptography Researcher Guilhem Niot will be speaking at the Crypto Day, Telecom Paris on the 18th September 2026. Guilhem will be speaking on - "PQC + Threshold: State of the Art in Threshold Quantum-Resistant Signatures".

We hope to see you too in Paris!

[Public Good Crypto @PublicGoodCrypt]

Our previous microgrants have gone to:

* 2025, D. Carnemolla: On the unbiasability of existing Verifiable Random Functions
* 2025, G. Niot, R. del Pino: Distributing the Dilithium digital signature
* 2025, C. Ganesh, B. Kanukurthi: Cryptographic Protocols for Rational Parties

[Guilhem N @GuilhemN_]

@vmgluskov @claucece @deescuderoo As far as I know the only other paper studying thresholdizing schemes proposed to NIST was https://t.co/T9u6k4dYRQ, including lattice-based schemes. It uses expensive generic techniques however, notably for the rejection sampling in dilithium.

[sofía celi @claucece]

'Share the MAYO' (with @deescuderoo and @GuilhemN_) about thresholdising MAYO and UOV goes to Taiwan at PQCrypto2025! https://t.co/HL8cM65kfk

[sofía celi @claucece]

Very excited to share our first exploration of threshold MAYO (yes, the PQC algorithm)! 🎉 Joint work with the amazing @deescuderoo and @GuilhemN_. The ideas extend to UOV as well—let’s have MV-based threshold cryptography!

📄 https://t.co/dlZKMvWA7g

[PQShield @PqShield]

We are very proud to announce that our colleague, Guilhem Niot, has been awarded the prestigious Kudelski Award from the École Polytechnique Fédérale de Lausanne @epfl_en) for his outstanding Master's thesis project he conducted at PQShield.
https://t.co/B4xqUtoB29

[EPFL Computer and Communication Sciences @ICepfl]

Finally, some students were awarded special prizes:
🏅 Commune de Chavannes-près-Renens price for an outstanding student: Tom Demont
🏅Kudelski price for a significant project in cybersecurity: Guilhem Niot (IN)

[EPFL Computer and Communication Sciences @ICepfl]

In this year’s magistrale, different awards were given ✨
First for professors:
🏅 Award for excellence in computer science education : Prof. Rachid Guerraoui
🏅 IC Faculty Polysphere : Prof. Emre Telatar

[PQShield @PqShield]

PQShield - 5 papers accepted for Crypto 2024, 18-22 Aug, for the 2nd year in a row!

Read More:
https://t.co/O4wCG6Gctw

We hope to see you in Santa Barbara!
#cryptography #cybersecurity #quantumsafe #quantumsecure

[PQShield @PqShield]

We’ve raised $37 million in Series B funding to help accelerate the global adoption of post-quantum cryptography (PQC). Read more: https://t.co/TVE99DTFJd
#fundinground #investment #cryptography #seriesb #cybersecurity #quantumsafe

[PQShield @PqShield]

Fighting side-channel attacks with our general toolkit: illustration with the Plover signature

Read the blog here:
https://t.co/jlASIO9wG8
#plover #SCA #sidechannel

[Muhammed Esgin @mfesgin]

📢Introducing 📢
Plover: our masking-friendly hash-and-sign lattice-based signature
to appear @IACReurocrypt 2024!

Joint work w/ Thomas Prest, Thomas Espitau, Guilhem Niot, Ron Steinfeld, Amin Sakzad
1/2

[Guilhem N @GuilhemN_]

@Ocramius @dbu - @smoench89 is correct, using the name_converter config of the Symfony Serializer should do the trick. You can define its value to "https://t.co/3mmLy8jzX7_converter.camel_case_to_snake_case" for snake case. Validation extraction should also still work after this modification :)

[IACR @IACR_News]

#ePrint A Vulnerability in Implementations of SHA-3, SHAKE, EdDSA, and Other NIST-Approved Algorithm: N Mouha, C Celi https://t.co/q18OJjqGZp

[Bari Weiss @bariweiss]

18. Twitter repeatedly informed Raichik that she had been suspended for violating Twitter’s policy against “hateful conduct.”

[PQShield @PqShield]

LAST CHANCE TO REGISTER - WEBINAR TODAY!
Hosted by Cryptographic Researcher @claucece, w/ Team PQShield's Dr Thomas Prest & Dr Shuichi Katsumata, today's webinar covers key issues around #PQC & secure messaging. REGISTER NOW: https://t.co/5TzKu0nSCr

[sofía celi @claucece]

Officially, now the announcement is out! Calling for new signature algorithms for the NIST PQC standardisation effort.

[Tako Boris Fouotsa 🇨🇲 @FouotsaB]

In this preprint, in order to counter the Castryck-Decru attack (and derivatives), we suggest to use a fixed degree, but then mask only the torsion point information. How do we do that and why is this worth exploring? A thread! 1/n

[IACR @IACR_News]

#ePrint An efficient key recovery attack on SIDH (preliminary version): W Castryck, T Decru https://t.co/2DAWdVYuNA