The Secure Storage Capacity of a DNA Wiretap Channel Model

TL;DR

This paper analyzes the maximum secure data storage capacity in DNA-based channels using wiretap coding, ensuring data confidentiality against eavesdroppers while maintaining reliable retrieval by authorized users.

Contribution

It extends the DNA channel model to include security considerations and characterizes the maximum secure storage rate, proving the optimality of index-based wiretap coding schemes.

Findings

Derived the secure storage capacity of the DNA wiretap channel

Proved the optimality of index-based wiretap coding schemes

Ensured reliable data retrieval with minimal information leakage

Abstract

In this paper, we propose a strategy for making DNA-based data storage information-theoretically secure through the use of wiretap channel coding. This motivates us to extend the shuffling-sampling channel model of Shomorony and Heckel (2021) to include a wiretapper. Our main result is a characterization of the secure storage capacity of our DNA wiretap channel model, which is the maximum rate at which data can be stored within a pool of DNA molecules so as to be reliably retrieved by an authorized party (Bob), while ensuring that an unauthorized party (Eve) gets almost no information from her observations. Furthermore, our proof of achievability shows that index-based wiretap channel coding schemes are optimal.