Chen Bai

GNNavigator: Towards Adaptive Training of Graph Neural Networks via Automatic Guideline Exploration

2024

Graph Neural Networks (GNNs) succeed significantly in many applications recently. However, balancing GNNs training runtime cost, memory consumption, and attainable accuracy for various applications is non-trivial. Previous training methodologies suffer from inferior adaptability and lack …

Security of Key-Alternating Ciphers: Quantum Lower Bounds and Quantum Walk Attacks

2024 · arXiv (Cornell University)

We study the quantum security of key-alternating ciphers (KAC), a natural multi-round generalization of the Even--Mansour construction. KAC abstracts the round structure of practical block ciphers as public permutations interleaved with key XORs. The $1$-round …