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Security Evaluation of Y00 Protocol Based on Time-Translational Symmetry Under Quantum Collective Known-Plaintext Attacks
IEEE Access ( IF 3.9 ) Pub Date : 2021-02-02 , DOI: 10.1109/access.2021.3056494
Takehisa Iwakoshi

In this paper, we concretely formulate to derive the attacker’s success probability of obtaining the shared secret keys for the Y00 protocol under a combination of a quantum collective attack with infinitely-long known-plaintext, naming it “collective known-plaintext attack” in this work. In contrast, our previous work showed only the necessary condition to design Y00 transmitters to be information-theoretic secure. The keystone of the security evaluations in this work is the time-translational symmetry of the Y00 signals modulated by pseudo-random number generators, such as linear-feedback shift registers or Mersenne twisters. With the assist of a true-random deliberate-signal-randomization, information-theoretic security would be realized. By numerical simulations, we can determine whether the designed Y00 transmitters are information-theoretic secure. However, this work’s security evaluation may not apply to the transmitters with cryptographically-secure pseudo-random number generators because they might not have time-translational symmetry, even though such Y00 transmitters may be securer. We also describe future challenges for theorists to accelerate designing securer Y00 transmitters.

中文翻译:

基于时间-转换对称性的Y00协议在量子集体已知明文攻击下的安全性评估

在本文中,我们具体制定公式,得出在量子集体攻击与无限长的已知明文结合的情况下,攻击者获得Y00协议共享密钥的成功概率,在此将其命名为“集体已知明文攻击”。工作。相反,我们以前的工作仅显示了将Y00发送器设计为信息理论上安全的必要条件。在这项工作中,安全评估的重点是由伪随机数发生器(例如线性反馈移位寄存器或梅森捻线器)调制的Y00信号的时间平移对称性。借助真正的随机信号随机化,可以实现信息理论上的安全性。通过数值模拟 我们可以确定设计的Y00变送器是否在信息论上是安全的。但是,这项工作的安全性评估可能不适用于具有密码安全伪随机数生成器的发射机,因为它们可能不具有时间平移对称性,即使此类Y00发射机可能更安全。我们还将描述理论家在加速设计更安全的Y00变送器方面的未来挑战。
更新日期:2021-03-02
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