Optimizing authenticated encryption algorithms

In this thesis, we look at authenticated encryption with associated data (AEAD), which is a cryptographic scheme that provides both confidentiality and integrity of messages within a single operation. We look at various existing and proposed AEAD algorithms and compare them both in terms of security and performance. We take a closer look at three selected candidate families of algorithms from the CAESAR competition. Then we discuss common facilities provided by the two most common CPU architectures – x86 and ARM – that can be used to implement cryptographic algorithms efficiently. Finally, we introduce our contribution of implementing the selected CAESAR candidates for the Linux kernel Crypto API.