Cryptographic Implementation Security Researcher

I am a Ph.D. candidate at Korea University, advised by Prof. HeeSeok Kim. My research focuses on physical attacks and countermeasures for cryptographic implementations, especially side-channel analysis, fault injection attacks, and post-quantum cryptography.

Research Interests

Physical Attacks

Side-channel analysis and fault injection attacks against cryptographic implementations.

SCA Fault Attack DFA

Fault Attacks

Security evaluation of lattice-based digital signatures(ML-DSA and HAETAE).

ML-DSA HAETAE

Countermeasures

Design and evaluation of implementation-level protections for software and hardware.

Masking Hardware Security Evaluation

News

2026

ARMOR has been accepted at CHES 2026.

2025

Working on fault injection attacks targeting ML-DSA and HAETAE.

Selected Publications

ARMOR: First-Order Masking of Activation and ArgMax Gadgets for Side-Channel Resistant Neural Networks
WonGeun Shin, JeongHwan Lee, Sangyun Jung, HeeSeok Kim
CHES 2026, To appear.
Cryptographic Implementation Side-Channel Analysis

Projects

Fault Attacks on PQC Signatures

Investigating how fault injection can affect challenge generation, randomness sampling, and signing procedures in lattice-based digital signature schemes.

Side-Channel Evaluation Framework

Developing practical tools for trace acquisition, SNR analysis, CPA, and leakage assessment on embedded cryptographic implementations.

Contact

Email: shinryan9@korea.ac.kr
GitHub: github.com/persShins
Affiliation: Korea University