Personal profile
Research
Hi! I am Qian Guo (郭骞), currently a Universitetslektor (Associate Professor) and a Docent (Reader) at the crypto and security group, Lund University. My research interests include information security, cryptography, and cryptographic implementations. Now I am focusing on (i) the practical aspects of post-quantum cryptography and (ii) the connections between cryptography and machine learning -- such as employing machine learning in side-channel attacks and homomorphic encryption for secure (privacy-preserving) machine learning.
Subject classification (UKÄ)
- Computer Sciences
- Computer Systems
- Communication Systems
Free keywords
- information security
- software security
- cryptography
- post-quantum cryptography
- side-channel attack
- cryptographic implementations
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 9 Industry, Innovation, and Infrastructure -
SDG 12 Responsible Consumption and Production
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Collaborations the last five years
Research output
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Single-Trace Key Recovery Attacks on HQC Using Valid and Invalid Ciphertexts
Dong, H., Guo, Q. & Nabokov, D., 2026, (Accepted/In press) Advances in Cryptology - EUROCRYPT 2026.Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review
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Unlocking the True Potential of Decryption Failure Oracles: A Hybrid Adaptive-LDPC Attack on ML-KEM Using Imperfect Oracles
Guo, Q., Nabokov, D. & Johansson, T., 2026, (Accepted/In press) Proceedings of the 35rd USENIX Security Symposium.Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review
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Multi-Value Plaintext-Checking and Full-Decryption Oracle-Based Attacks on HQC from Offline Templates
Dong, H. & Guo, Q., 2025 Sept, In: IACR Transactions on Cryptographic Hardware and Embedded Systems. 2025, 4, p. 254-289 36 p.Research output: Contribution to journal › Article › peer-review
Open Access -
A BKW-Style Solver for the Restricted Syndrome Decoding Problem
Nguyen, V., Johansson, T. & Guo, Q., 2025, (Unpublished) 28 p.Research output: Other contribution › Miscellaneous › Research
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Enhancing Key-Recovery Chosen-Ciphertext Side-Channel Attacks on NTRU Using LDPC}
Nabokov, D., Tong, X. & Guo, Q., 2025, 2025 IEEE 43rd International Conference on Computer Design (ICCD). IEEE, p. 528-531Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review
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Maskininlärningsstödd sidokanalanalys inom postkvantkryptering
Guo, Q. (PI)
2024/01/01 → 2025/12/31
Project: Research
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Machine-Learning-Aided Side-Channel Analysis in Post-Quantum Cryptography
Guo, Q. (PI)
2024/01/01 → 2025/12/31
Project: Research
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Side-Channel Vulnerability and Threat Analysis with Machine Learning Awareness
Johansson, T. (Researcher), Guo, Q. (Researcher) & Johansson, A. (Researcher)
2021/04/01 → 2026/03/01
Project: Research
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Lightweight Cryptography for Autonomous Vehicles
Johansson, T. (Researcher) & Guo, Q. (Researcher)
2020/08/01 → 2023/12/31
Project: Research
Activities
- 1 Invited talk
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Side-channel-assisted key-recovery chosen-ciphertext attacks on several NIST PQC KEMs
Guo, Q. (Invited speaker)
2022 Jun 28Activity: Talk or presentation › Invited talk
Prizes and Distinction
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Best Paper Award of Asiacrypt 2014
Guo, Q. (Recipient), Johansson, T. (Recipient) & Löndahl, C. (Recipient), 2014
Prize: Prize (including medals and awards)