#NIST Selects #HQC as Fifth Algorithm for #PostQuantum #Encryption

https://www.nist.gov/news-events/news/2025/03/nist-selects-hqc-fifth-algorithm-post-quantum-encryption

I had the pleasure to contribute to the #USENIX2024 paper "Divide and Surrender", recovering the full secret key from the reference implementation of the HQC Key Encapsulation Mechanism, exploiting a timing side channel arising from non-constant-time modulo operations.
Thanks to Robin Leander Schröder and Qian Guo for this opportunity and congratulations to Robin Leander Schröder for getting his first paper accepted at USENIX Security!

You can read the full paper here: https://stefangast.eu/papers/divide_and_surrender.pdf