The Hardware Performance of Authenticated Encryption Modes
Date Issued
2013
Author(s)
Mihajloska Trpcheska, Hristina
Abstract
Authenticated encryption has long been a vital operation
in cryptography by its ability to provide confidentiality,
integrity and authenticity at the same time. Its use has
progressed in parallel with the worldwide use of Internet Protocol (IP), which has led to development of several new schemes as well as improved versions of existing
ones. There have already been studies investigating software performance of various schemes. However, performance of authenticated encryption schemes on hardware
has been left as an open question. We study the comprehensive evaluation of hardware performance of the most commonly used authenticated encryption modes CCM,
GCM, OCB3 and EAX. These modes are block cipher based with additional authentication data (AAD). In order to make our evaluation fair, we have implemented
each scheme with AES block cipher algorithm. In our
evaluation, we targeted ASIC platforms and used 45 nm
generic NANGATE Open Cell Library for syntheses. In
each design, we have targeted minimizing the time-area
product while maximizing the throughput. In the results,
area, speed, time-area product, throughput, and power
figures are presented for each scheme. Finally, we provide
an unbiased discussion on the impact of the structure and
complexity of each scheme on hardware implementation,
together with recommendations on hardware-friendly authenticated encryption scheme design.
in cryptography by its ability to provide confidentiality,
integrity and authenticity at the same time. Its use has
progressed in parallel with the worldwide use of Internet Protocol (IP), which has led to development of several new schemes as well as improved versions of existing
ones. There have already been studies investigating software performance of various schemes. However, performance of authenticated encryption schemes on hardware
has been left as an open question. We study the comprehensive evaluation of hardware performance of the most commonly used authenticated encryption modes CCM,
GCM, OCB3 and EAX. These modes are block cipher based with additional authentication data (AAD). In order to make our evaluation fair, we have implemented
each scheme with AES block cipher algorithm. In our
evaluation, we targeted ASIC platforms and used 45 nm
generic NANGATE Open Cell Library for syntheses. In
each design, we have targeted minimizing the time-area
product while maximizing the throughput. In the results,
area, speed, time-area product, throughput, and power
figures are presented for each scheme. Finally, we provide
an unbiased discussion on the impact of the structure and
complexity of each scheme on hardware implementation,
together with recommendations on hardware-friendly authenticated encryption scheme design.
Subjects
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