Van Linh Dinh, Van Yem Vu, Thi Phuong Thao Hoang
Hanoi University of Science and Technology, Hanoi, Vietnam.
Academy of Cryptography Techniques, Hanoi, Vietnam.
PLoS One. 2025 Feb 25;20(2):e0318110. doi: 10.1371/journal.pone.0318110. eCollection 2025.
The crypto-coding technique is essential for modern digital wireless communications systems, allowing data encryption and channel coding to be performed in only one step without requiring additional hardware. This work proposes a crypto-coding technique combining polar codes with a secret key, which is derived from wireless channel characteristics, to boost the security and reliability characteristics of the systems. The secret key is divided into two parts, one is assigned to the frozen bits, and the other is XORed with the information bits. A simulation with different key lengths and code lengths is carried out in Additive white Gaussian noise (AWGN) that helps us to evaluate this technique by the error correction and security performance, computational complexity. The key benefit is that it achieves the same bit error rate (BER) performance and computational complexity as traditional polar codes and existing methods despite only taking one step. Meanwhile, it ensures completely degraded decoding effectiveness at eavesdroppers, thus it is effective against passive eavesdropping attacks. Furthermore, this method does not require additional hardware overhead for key management and distribution.
加密编码技术对于现代数字无线通信系统至关重要，它允许在仅一步操作中执行数据加密和信道编码，而无需额外的硬件。这项工作提出了一种将极化码与从无线信道特性导出的秘密密钥相结合的加密编码技术，以提高系统的安全性和可靠性。秘密密钥分为两部分，一部分分配给冻结比特，另一部分与信息比特进行异或运算。在加性高斯白噪声（AWGN）中进行了不同密钥长度和码长的仿真，这有助于我们通过纠错和安全性能、计算复杂度来评估该技术。关键优势在于，尽管只进行一步操作，但它实现了与传统极化码和现有方法相同的误码率（BER）性能和计算复杂度。同时，它确保在窃听者处解码有效性完全降低，因此对被动窃听攻击有效。此外，该方法在密钥管理和分发方面不需要额外的硬件开销。
