1 Department of Applied Mathematics and Computer Science, Technical University of Denmark2 Cryptology, Department of Applied Mathematics and Computer Science, Technical University of Denmark3 Katholieke Universiteit4 NXP Semiconductors5 Graz University of Technology6 Graz University of Technology
In this paper, we present a novel lightweight authenticated cipher optimized for hardware implementations called Fides. It is an online nonce-based authenticated encryption scheme with authenticated data whose area requirements are as low as 793 GE and 1001 GE for 80-bit and 96-bit security, respectively. This is at least two times smaller than its closest competitors Hummingbird-2 and Grain-128a. While being extremely compact, Fides is both throughput and latency efficient, even in its most serial implementations. This is attained by our novel sponge-like design approach. Moreover, cryptographically optimal 5-bit and 6-bit S-boxes are used as basic nonlinear components while paying a special attention on the simplicity of providing first order side-channel resistance with threshold implementation.
Lecture Notes in Computer Science: 15th International Workshop, Santa Barbara, Ca, Usa, August 20-23, 2013. Proceedings, 2013, p. 142-158
Lightweight cryptography; Authenticated encryption; Keyed sponge; Glitch-free masking; APN permutation; Almost bent permutation
Main Research Area:
Lecture Notes in Computer Science
15th International Workshop on Cryptographic Hardware and Embedded Systems (CHES 2013)Cryptographic Hardware and Embedded Systems