High-speed and low-power implementation of hash message authentication code through partially unrolled techniques

Authors:
H. E. Michail;A. P. Kakarountas;E. Fotopoulou;C. E. Goutis
Affiliations:
Electrical & Computer Engineering Department, University of Patras, Patra, Greece;Electrical & Computer Engineering Department, University of Patras, Patra, Greece;Electrical & Computer Engineering Department, University of Patras, Patra, Greece;Electrical & Computer Engineering Department, University of Patras, Patra, Greece
Venue:
MIV'05 Proceedings of the 5th WSEAS international conference on Multimedia, internet & video technologies
Year:
2005

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Abstract

In this paper an efficient implementation, in terms of performance, of the keyed-hash message authentication code (HMAC) using the SHA-256 hash function is presented. This mechanism is used for message authentication in combination with a shared secret key. The proposed hardware implementation, invokes a partially unrolled implementation for the underlying hash function leading to a high-throughput and low-power implementation for the whole HMAC construction. Special care has been taken so that the proposed implementation doesn't introduce extra design complexity; while in parallel functionality was kept to the required levels.