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A New Keystream Generator MUGI

Dai WATANABE, Soichi FURUYA, Hirotaka YOSHIDA, Kazuo TAKARAGI, Bart PRENEEL

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Summary :

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 of MUGI has been evaluated by analyzing the applicability of re-synchronization attacks, related-key attacks, and attacks that exploit the linear correlation of an output sequence. Our analysis confirms that MUGI is a secure KSG.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E87-A No.1 pp.37-45
Publication Date
2004/01/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Section on Cryptography and Information Security)
Category
Symmetric Cipher

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