In this paper, we realize Shamir’s no-key protocol via quantum computation of Boolean functions and a private quantum channel. The proposed quantum no-key protocol has three rounds and provides mutual data origin authentication. Random Boolean functions are used to create entanglement and guarantee that any adversary without keys cannot pass the authentication. Thus, our protocol can resist the man-in-the-middle attack. A security analysis has shown that pieces of ciphertexts of the three rounds are completely mixed state. This property ensures no adversary can get any information about the sent message or authentication keys. Therefore, our protocol is unconditionally secure and its authentication keys can be reused.
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This work was supported by National Natural Science Foundation of China (Grant No. 61672517), National Cryptography Development Fund (Grant No. MMJJ20170108), National Key Research and Development Program of China (Grant No. 2017YFB0802502), and Fundamental Theory and Cutting Edge Technology Research Program of Institute of Information Engineering, CAS (Grant No. Y7Z0301103).
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Yang, L., Wu, C. & Xie, H. Mutual authenticated quantum no-key encryption scheme over private quantum channel. Sci. China Inf. Sci. 61, 022502 (2018). https://doi.org/10.1007/s11432-017-9180-2
- quantum cryptography
- no-key protocol
- quantum entanglement
- information-theoretical security
- private quantum channel