Designing High-Throughput Hardware Accelerator for Stream Cipher HC-128
- Chattopadhyay, A. , Khalid, A. , Maitra, S. , Raizada , S.
- Book Title:
- International Symposium on Circuits and Systems (ISCAS 2012), May 20 -23, Seoul, Korea
- p.p. 1448 - 1451
Due to ubiquitous deployment of embedded systems, security and privacy are emerging as major design concerns. For that purpose, new stream ciphers are being proposed by the cryptographic researchers. HC-128 is one of the recent stream ciphers that received attention after its selection as an eStream candidate. Till date, the cipher is believed to have a good security margin. In this paper we study several implementation issues for HC-128 in a disciplined manner. We first discuss the experience on embedded and customizable processors. Then we consider the ASIC implementation for co-processor design. Further we explore several parallelization strategies for faster execution of the cipher. To the best of our knowledge such a detailed implementation exercise has not been presented in the literature. Our novel implementation strategies mark the fastest HC-128 execution reported till date.