Low Area and Low Power Implementation for CAESAR Authenticated Ciphers

Authenticated Encryption (AE) and Authenticated Encryption with Associated Data (AEAD) play a significant role in cryptography as they simultaneously provide confidentiality, integrity, and authenticity assurances on the data. The Competition for Authenticated Encryption, Security, Applicability, and Robustness (CAESAR) seeks optimal authenticated ciphers based on multiple criteria, including security, performance, area, and energy-efficiency. In this paper, low area and low power implementations of selected ciphers from the CAESAR candidates namely NORX, Tiaoxin, SILC, and COLM are provided. A reduction in area with an average of 43% and a reduction in dynamic power with an average of 54% are achieved compared to their corresponding high-speed architectures. Moreover, throughput (TP) in (Mbps) decreases by an average of 68% and throughput-to-area (TP/A) in (Mbps/Slices) decreases by an average of 48 %.