التفاصيل البيبلوغرافية
| العنوان: |
Cryptanalysis of key exchange protocol based on tensor ergodic problem |
| المؤلفون: |
Gu, Chunsheng, Gu, Youyu, Shi, Peizhong, Ge, Chunpeng, Jing, Zhenjun |
| المصدر: |
China Communications Magazine; October 2018, Vol. 15 Issue: 10 p172-181, 10p |
| مستخلص: |
Recently, Mao, Zhang, Wu et al. constructed two key exchange (KE) protocols based on tensor ergodic problem (TEP). Although they conjectured that these constructions can potentially resist quantum computing attack, they did not provide a rigorous security proof for their KE protocols. In this paper, applying the properties of ergodic matrix, we first present a polynomial time algorithm to solve the TEP problem using O(n6) arithmetic operations in the finite field, where n is the security parameter. Then, applying this polynomial time algorithm, we generate a common shared key for two TEP-based KE constructions, respectively. In addition, we also provide a polynomial time algorithm with O(n6) arithmetic operations that directly recovers the plaintext from a ciphertext for the KE-based encryption scheme. Thus, the TEP-based KE protocols and their corresponding encryption schemes are insecure. |
| قاعدة البيانات: |
Supplemental Index |
