1、潘彦斌 副研究员 中科院数学与系统科学研究所 10：00-11：00
题目：It All Started with Compression: Another Look at Reconciliation-Based LWE Key Exchange
摘要： To embrace the increasing challenge from the growth of quantum threats, there emerge a lot of quantum-resist key exchange scheme based on (Ring-)LWE problem. The reconciliation technique has become a crucial building tool for the vast majority of (Ring-)LWE key exchange schemes where two parties in communication try to eliminate the effect of the errors introduced by the underlying intractable problem and agree on a common value.
However, the construction of these reconciliation mechanisms appears to be tricky and obscure. In this work we analyze some typical reconciliation mechanisms and present a framework to derive these reconciliation mechanisms and corresponding key exchange schemes from some public key encryption schemes with compression. Our encryption-based approach leads to a unified and clearer interpretation of reconciliation technique and simplifies the design of (Ring-)LWE-based key exchange scheme. With this point of view, we also present some new encryption-based key exchange schemes as applications.
2、赵运磊 教授 复旦大学