Institute of Computing Science and Technology, Guangzhou University, Guangzhou, 510006, China.
School of Computer Science of Information Technology, Qiannan Normal University for Nationalities, Duyun, 558000, China.
Interdiscip Sci. 2024 Dec;16(4):872-881. doi: 10.1007/s12539-024-00648-5. Epub 2024 Aug 19.
Recent advancements in synthesis and sequencing techniques have made deoxyribonucleic acid (DNA) a promising alternative for next-generation digital storage. As it approaches practical application, ensuring the security of DNA-stored information has become a critical problem. Deniable encryption allows the decryption of different information from the same ciphertext, ensuring that the "plausible" fake information can be provided when users are coerced to reveal the real information. In this paper, we propose a deniable encryption method that uniquely leverages DNA noise channels. Specifically, true and fake messages are encrypted by two similar modulation carriers and subsequently obfuscated by inherent errors. Experiment results demonstrate that our method not only can conceal true information among fake ones indistinguishably, but also allow both the coercive adversary and the legitimate receiver to decrypt the intended information accurately. Further security analysis validates the resistance of our method against various typical attacks. Compared with conventional DNA cryptography methods based on complex biological operations, our method offers superior practicality and reliability, positioning it as an ideal solution for data encryption in future large-scale DNA storage applications.
近年来，合成和测序技术的进步使得脱氧核糖核酸（DNA）成为下一代数字存储的一种有前途的替代物。随着它接近实际应用，确保存储在 DNA 中的信息的安全性已成为一个关键问题。可否认加密允许从同一密文解密不同的信息，从而确保在用户被迫透露真实信息时，可以提供“合理的”虚假信息。在本文中，我们提出了一种可否认加密方法，该方法独特地利用了 DNA 噪声通道。具体来说，真实和伪造的消息通过两个类似的调制载波进行加密，然后通过固有误差进行混淆。实验结果表明，我们的方法不仅可以在不可区分的伪造信息中隐藏真实信息，而且还允许强制对手和合法接收方准确地解密预期信息。进一步的安全分析验证了我们的方法对各种典型攻击的抵抗能力。与基于复杂生物操作的传统 DNA 加密方法相比，我们的方法具有更高的实用性和可靠性，是未来大规模 DNA 存储应用中数据加密的理想解决方案。
