Cryptology ePrint Archive: Report 2004/092

A New Stream Cipher HC-256

Hongjun Wu

Abstract: HC-256 is a software-efficient stream cipher. It generates keystream from a 256-bit secret key and a 256-bit initialization vector. The encryption speed of the C implementation of HC-256 is about 1.9 bits per clock cycle (4.2 cycle/byte) on the Intel Pentium 4 processor. A variant of HC-256 is also introduced in this paper.

Category / Keywords: secret-key cryptography / stream cipher, HC-256, HC-256'

Publication Info: A short version will appear in the proceedings of FSE 2004

Date: received 15 Apr 2004

Contact author: hongjun at i2r a-star edu sg

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Version: 20040415:170206 (All versions of this report)

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