Phelix

Fast Encryption and Authentication in a Single Cryptographic Primitive

D. Whiting, B. Schneier, S. Lucks, and F. Muller

To appear.

ABSTRACT: Phelix¹ is a high-speed stream cipher with a built-in MAC functionality. It is efficient in both hardware and software. On current Pentium CPUs, Phelix has a per-packet overhead of less than 900 clocks, plus a per-byte cost well under 8 clocks per byte, comparing very favorably with the best AES (encryption-only) implementations, even for small packets.

¹ Pronounced "felix" (rhymes with "helix").

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Phelix source code
x86 64-bit assembler
PowerPC

Implementations of Phelix by others:

PhelixJ and Phelix.NET by Markus Hahn
Phelix in open-source Java by Mike Amling

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