Abstract The National Institute of Standards and Technology (NIST) initiated a public
standardization process to select one or more Authenticated Encryption with Associated …

This paper gives a new generalized key-recovery model of related-key rectangle attacks on
block ciphers with linear key schedules. The model is quite optimized and applicable to …

A nonce-respecting tweakable blockcipher is the building-block for the OCB authenticated
encryption mode. An XEX-based TBC is used to process each block in OCB. However, XEX …

Tweakable block cipher (TBC), a stronger notion than standard block ciphers, has wide-
scale applications in symmetric-key schemes. At a high level, it provides flexibility in design …

COPA, introduced by Andreeva et al., is the first online authenticated encryption (AE) mode
with nonce-misuse resistance, and it is covered in COLM, which is one of the final CAESAR …

The INT-RUP security of an authenticated encryption (AE) scheme is a well studied problem
which deals with the integrity security of an AE scheme in the setting of releasing unverified …

ForkAE is a family of authenticated encryption (AE) schemes using a forkcipher as a building
block. ForkAE was published in Asiacrypt'19 and is a second round candidate in the NIST …

This paper proposes a lightweight authenticated encryption (AE) scheme, called Light-OCB,
which can be viewed as a lighter variant of the CAESAR winner OCB as well as a faster …

For almost one decade, the academic community has been working in the design and
analysis of new lightweight primitives. This cryptography development aims to provide …

In this work, we examine online authenticated encryption with variable expansion. We follow
a notion where both encryption and decryption are online, and security is ensured in the …