Welcome to the resource topic for 2022/1711
Title:
Encrypted Nonce Modes on Farfalle
Authors: Seth Hoffert
Abstract:Nonces are a fact of life for achieving semantic security. Generating a uniformly random nonce can be costly and may not always be feasible. Using anything other than uniformly random bits can result in information leakage; e.g., a timestamp can deanonymize a communication and a counter can leak the quantity of transmitted messages. Ideally, we would like to be able to efficiently encrypt the nonce to 1) avoid needing uniformly random bits and 2) avoid information leakage. This paper presents two new authenticated encryption modes built on top of Farfalle that perfectly achieve these goals.
ePrint: https://eprint.iacr.org/2022/1711
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