2017/01/25 by Eric Graves, Graves, Eric, Tan F. Wong +1
Computer Science · Engineering · #Chaos-based Image/Signal Encryption #Cryptographic Implementations and Security #FOS: Computer and information sciences #Information Theory (cs.IT) #Wireless Communication Security Techniques
paper · pdf · doi:10.48550/arxiv.1701.07347
openalex publication_date 2017/01/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper employs equal-image-size source partitioning techniques to derive\nthe capacities of the general discrete memoryless wiretap channel (DM-WTC)\nunder four different secrecy criteria. These criteria respectively specify\nrequirements on the expected values and tail probabilities of the differences,\nin absolute value and in exponent, between the joint probability of the secret\nmessage and the eavesdropper's observation and the corresponding probability if\nthey were independent. Some of these criteria reduce back to the standard\nleakage and variation distance constraints that have been previously considered\nin the literature. The capacities under these secrecy criteria are found to be\ndifferent when non-vanishing error and secrecy tolerances are allowed. Based on\nthese new results, we are able to conclude that the strong converse property\ngenerally holds for the DM-WTC only under the two secrecy criteria based on\nconstraining the tail probabilities. Under the secrecy criteria based on the\nexpected values, an interesting phase change phenomenon is observed as the\ntolerance values vary.\n