The function of the Internet proxy is to check and convert the data exchanged between client and server.In fact,the two-party secure communication pro-tocol with good security is turned into an unsafe multi-party protocol.At present,there are relatively few proxy protocols that can be applied in practice.This paper ana-lyzes the classic agent protocol mcTLS and pointed out the security issues.We focus on the security of TLS 1.3 and proposed a lattice-based multi-party proxy protocol:LaTLS.LaTLS can be proved secure in the eCK model,it can resist key-sharing attacks,counterfeiting attacks,re-play attacks,and achieve forward security.Compared with traditional DH and ECDH schemes,LaTLS is more effcient.Its security is based on the shortest vector prob-lem,therefor it has anti-quantum attack properties.
ProxyTLS 1.3LatticeeCK modelmcTLSLaTLS
ZHANG Xinglong、CHENG Qingfeng、LI Yuting
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State Key Laboratory of Mathematical Engineering and Advanced Computing,Zhengzhou 450001,China
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