International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 05 July 2023

Pawel Cyprys, Shlomi Dolev, Oded Margalit
ePrint Report ePrint Report
Our research focuses on achieving perfect provable encryption by drawing inspiration from the principles of a one-time pad. We explore the potential of leveraging the unique properties of the one-time pad to design effective one-way functions. Our methodology involves the application of the exclusive-or (xor) operation to two randomly chosen strings. To address concerns related to preimage mappings, we incorporate error detection codes. Additionally, we utilize permutations to overcome linearity issues in the computation process.

In order to enhance the security of our approach, we propose the integration of a secret-sharing scheme based on a linear polynomial. This helps mitigate collisions and adds an additional layer of perfect security. We thoroughly investigate the interactions between different aspects of one-way functions to strengthen the reliability of commitments. Lastly, we explore the possibility of nesting one-way functions as a countermeasure against potential backdoors.

Through our study, we aim to contribute to the advancement of secure encryption techniques by leveraging the inherent strengths of the one-time pad and carefully considering the interplay of various components in the design of one-way functions.
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