[Resource Topic] 2005/175: A 32-bit RC4-like Keystream Generator

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A 32-bit RC4-like Keystream Generator

Authors: Yassir Nawaz, Kishan Chand Gupta, Guang Gong


In this paper we propose a new 32-bit RC4 like keystream
generator. The proposed generator produces 32 bits in each
iteration and can be implemented in software with reasonable
memory requirements. Our experiments show that this generator is
3.2 times faster than original 8-bit RC4. It has a huge internal
state and offers higher resistance against state recovery attacks
than the original 8-bit RC4. We analyze the randomness properties
of the generator using a probabilistic approach. The generator is
suitable for high speed software encryption.

ePrint: https://eprint.iacr.org/2005/175

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