The Indifferentiability of the Duplex and its Practical Applications (opens in new tab)

The Duplex construction, introduced by Bertoni et al. (SAC 2011), is the Swiss Army knife of permutation-based cryptography. It can be used to realise a variety of cryptographic objects—ranging from hash functions and MACs, to authenticated encryption and symmetric ratchets. Testament to this is the STROBE protocol framework which is a software cryptographic library based solely on the Duplex combined with a rich set of function calls. While prior works have typically focused their attention ...