Common Knowledge Based Secure Generation and Exchange of Symmetric Keys

Hexiong Chen ； Jiaping Wu ； Wei Guo ； Feilu Hang ； Zhenyu Luo ； Yilin Wang

《International Journal of Network Security》 25卷1期 (2023/01) Pp. 76-88

https://doi.org/10.6633/IJNS.202301_25(1).09

摘要

Man-in-the-middle attacks bring severe security threats to the Diffie-Hellman (DH) based symmetric key generation and exchange. This paper proposed a common knowledge-based technique for secure key generation and exchange to ensure the security of the key generation between the communication peers. A message matching mechanism with low cost is designed without interfering with or changing the standard communication mechanism. Therefore, the common knowledge about the communication peers' historical communication messages is obtained using the shared knowledge generation and verification algorithm. Based on the common knowledge and the proposed sizeable prime number generation algorithm, DH symmetric key agreement with low information exchange is implemented to improve the security in generating the symmetric key. Theoretical analysis and simulation results show that the proposed schemes can considerably improve the security in the process of the symmetric key generation with low resource cost.

關鍵字

Common Knowledge ； Consistency Verification ； Key Exchange ； Message Matching Scheme ； Symmetric Key