TY - GEN
T1 - Wiretap Channel with Latent Variable Secrecy
AU - De Dieu Mutangana, Jean
AU - Tandon, Ravi
AU - Goldfeld, Ziv
AU - Shitz, Shlomo Shamai
N1 - Publisher Copyright: © 2021 IEEE.
PY - 2021/7/12
Y1 - 2021/7/12
N2 - The classic wiretap channel (WTC) problem is concerned with a transmitter (Alice) that wants to send a message W to the intended receiver (Bob) while keeping it secret from a passive eavesdropper (Eve). However, under certain communication scenarios, the user may not be interested in hiding the entire message from the eavesdropper, but rather in hiding its most sensitive attributes. While classic wiretap coding is capable of hiding these salient message attributes, it may be too stringent and better communication rates may be achievable. Motivated by the above, in this paper, we introduce and study the latent variable wiretap channel (LV-WTC) problem. Under this setting, the transmitter is interested in sending the message W to the intended receiver while keeping a correlated latent variable S (which models privacy sensitive attributes) secret from the eavesdropper. We present a message splitting based achievable scheme for the LV-WTC problem, which adapts to the structure of the conditional distribution PSW to achieve higher rates compared to the classical WTC. Several open problems and future directions that originate from this new communication problem are also discussed.
AB - The classic wiretap channel (WTC) problem is concerned with a transmitter (Alice) that wants to send a message W to the intended receiver (Bob) while keeping it secret from a passive eavesdropper (Eve). However, under certain communication scenarios, the user may not be interested in hiding the entire message from the eavesdropper, but rather in hiding its most sensitive attributes. While classic wiretap coding is capable of hiding these salient message attributes, it may be too stringent and better communication rates may be achievable. Motivated by the above, in this paper, we introduce and study the latent variable wiretap channel (LV-WTC) problem. Under this setting, the transmitter is interested in sending the message W to the intended receiver while keeping a correlated latent variable S (which models privacy sensitive attributes) secret from the eavesdropper. We present a message splitting based achievable scheme for the LV-WTC problem, which adapts to the structure of the conditional distribution PSW to achieve higher rates compared to the classical WTC. Several open problems and future directions that originate from this new communication problem are also discussed.
UR - http://www.scopus.com/inward/record.url?scp=85115073289&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/ISIT45174.2021.9517741
DO - https://doi.org/10.1109/ISIT45174.2021.9517741
M3 - Conference contribution
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 837
EP - 842
BT - 2021 IEEE International Symposium on Information Theory, ISIT 2021 - Proceedings
T2 - 2021 IEEE International Symposium on Information Theory, ISIT 2021
Y2 - 12 July 2021 through 20 July 2021
ER -