[Resource Topic] 2005/003: Cryptanalysis of Hiji-bij-bij (HBB)

Welcome to the resource topic for 2005/003

Title:
Cryptanalysis of Hiji-bij-bij (HBB)

Authors: Vlastimil Klima

Abstract:

In this paper, we show several known-plaintext attacks on the stream cipher HBB which was proposed recently at INDOCRYPT 2003. The cipher can operate either as a classical stream cipher (in the B mode) or as an asynchronous stream cipher (in the SS mode). In the case of the SS mode, we present known-plaintext attacks recovering 128-bit key with the complexity 2^66 and 256-bit key with the complexity 2^67. In the case of B mode with 256-bit key, we show a known-plaintext attack recovering the whole plaintext with the complexity 2^140. All attacks need only a small part of the plaintext to be known.

ePrint: https://eprint.iacr.org/2005/003

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