Helix: Fast Encryption and Authentication in a Single Cryptographic Primitive

Abstract. Helix is a high-speed stream cipher with a built-in MAC functionality. On a Pentium II CPU it is about twice as fast as Rijndael or Twofish, and comparable in speed to RC4. The overhead per encrypted/authenticated message is low, making it suitable for small messages. It is efficient in both hardware and software, and with some pre-computation can effectively switch keys on a per-message basis without additional overhead.

• Type: Conference
• Year: 2003
• Where: FSE
• Authors: Niels Ferguson, Doug Whiting, Bruce Schneier, John Kelsey, Stefan Lucks, Tadayoshi Kohno
• Keywords: Additional Overhead, Built-in Mac Functionality, Cryptography, FSE 2003, Pentium II CPU