Journal of Ubiquitous Convergence Technology
- Volume 2 Issue 1
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- Pages.12-17
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- 2008
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- 1976-5355(pISSN)
Fast Implementation of a 128bit AES Block Cipher Algorithm OCB Mode Using a High Performance DSP
- Kim, Hyo-Won (Institute of Electronics and Telecommunications Research Institute) ;
- Kim, Su-Hyun (Institute of Electronics and Telecommunications Research Institute) ;
- Kang, Sun (Institute of Electronics and Telecommunications Research Institute) ;
- Chang, Tae-Joo (Institute of Electronics and Telecommunications Research Institute)
- Published : 2008.05.30
Abstract
In this paper, the 128bit AES block cipher algorithm OCB (Offset Code Book) mode for privacy and authenticity of high speed packet data was efficiently designed in C language level and was optimized to support the required capacity of contents server using high performance DSP. It is known that OCB mode is about two times faster than CBC-MAC mode. As an experimental result, the encryption / decryption speed of the implemented block cipher was 308Mbps, 311 Mbps respectively at 1GHz clock speed, which is 50% faster than a general design with 3.5% more memory usage.
Keywords
- Advanced Encryption Standard (AES);
- Offset Code Book (OCB);
- Digital Signal Processor (DSP);
- fast implementation;
- optimization