Intelligent Wiretap Code Design: Exploiting Wireless Endogenous Security via Information Theory and Deep Learning Integration

2026-08-10

AI Summary

This work addresses the reliance on traditional cryptographic assumptions by proposing a wiretap coding scheme within a semantic communication framework that leverages the intrinsic randomness of wireless channels to jointly ensure security and reliable transmission. The design employs mutual information (MI) and generalized mutual information (GMI) as optimization criteria for two canonical eavesdropping scenarios, respectively, and integrates maximum a posteriori (MAP) decoding with deep learning–driven discrete semantic representations. By uniquely unifying semantic communication, information-theoretic metrics, and deep learning for wiretap code construction, this approach significantly reduces information leakage to eavesdroppers of varying capabilities while maintaining high reliability for the legitimate receiver.

Abstract

Recent advancements in wireless endogenous security have explored leveraging the inherent randomness of wireless channels to enhance communication security, providing an effective alternative to traditional encryption methods. This paper proposes a wiretap coding scheme within the semantic communication framework, which leverages discrete semantic representations compatible with conventional digital modulation to jointly enhance communication security and reliability. We investigate two eavesdropping scenarios: (i) the eavesdropper employs a maximum a posteriori (MAP) decoder, and (ii) the eavesdropper has access to a decoder identical to that of the legitimate receiver. In the first scenario, we exploit mutual information as a metric to guide the design of an optimized coding strategy, minimizing information leakage while enhancing communication reliability. In the second scenario, considering the limitations of the eavesdropper's decoding capability, we employ generalized mutual information (GMI) to characterize recoverability under the prescribed decoding rule and guide reliability-aware code optimization.

Problem

• wiretap coding
• semantic communication
• wireless security
• mutual information
• eavesdropping

Innovation

• wiretap coding
• semantic communication
• mutual information
• generalized mutual information (GMI)
• endogenous security