A New Keystream Generator MUGI

  • Authors:
  • Dai Watanabe;Soichi Furuya;Hirotaka Yoshida;Kazuo Takaragi;Bart Preneel

  • Affiliations:
  • -;-;-;-;-

  • Venue:
  • FSE '02 Revised Papers from the 9th International Workshop on Fast Software Encryption
  • Year:
  • 2002

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Abstract

We present a new keystream generator (KSG) MUGI, which is a variant of Panama proposed at FSE '98. MUGI has a 128-bit secret key and a 128-bit initial vector as parameters and generates a 64-bit string per round. The design is particularly suited for efficient hardware implementations, but the software performance of MUGI is excellent as well. A speed optimized implementation in hardware achieves about 3 Gbps with 26 Kgates, which is several times faster than AES. On the other hand the security was evaluated according to re-synchronization attack, related-key attack, and linear correlation of an output sequence. Our analysis confirms that MUGI is a secure KSG.