NDLI: Message Authentication Code over a wiretap channel

Content Provider	IEEE Xplore Digital Library
Author	Dajiang Chen Shaoquan Jiang Zhiguang Qin
Copyright Year	2015
Description	Author affiliation: Inst. of Inf. Security, Mianyang Normal Univ., Mianyang, China (Shaoquan Jiang) \|\| Sch. of Comput. Sci. & Eng., UESTC, Chengdu, China (Dajiang Chen; Zhiguang Qin)
Abstract	Message Authentication Code (MAC) is a keyed function $f_{K}$ such that when Alice, who shares the secret K with Bob, sends $f_{K}(M)$ to the latter, Bob will be assured of the integrity and authenticity of M. Traditionally, it is assumed that the channel is noiseless. Unfortunately, Maurer showed that in this case an attacker can succeed with probability equation after authenticating ∓ messages, where H(K) is the entropy of K. In this paper, we consider the setting where the channel is noisy. Specifically, Alice and Bob are connected by a discrete memoryless channel (DMC) $W_{1}$ and a noiseless but insecure channel. In addition, there is a DMC $W_{2}$ between Alice and attacker Oscar. We regard the noisy channel as an expensive resource and define the authentication rate $ρ_{auth}$ as the ratio of message length to the number n of channel $W_{1}$ uses. The security of this model depends on the channel coding for $f_{K}(M).$ A natural coding scheme is to use the secrecy capacity achieving code of Csiszár and Körner. Intuitively, this is also the optimal strategy. However, we propose a coding scheme that achieves a higher $ρ_{auth}.$ Our crucial point is that under a secrecy capacity code, Bob can fully recover $f_{K}(M)$ while in our model this is not necessary as we only need to detect the existence of the modification. How to detect the malicious modification without recovering $f_{K}(M)$ is the main contribution of this work. We achieve this through random coding techniques.
Starting Page	2301
Ending Page	2305
File Size	244393
Page Count	5
File Format	PDF
ISSN	21578117
e-ISBN	9781467377041
DOI	10.1109/ISIT.2015.7282866
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-14
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Authentication Noise measurement Message authentication Computational modeling Cryptography Channel coding information theoretical security wiretap channel
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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