Welcome to the resource topic for 2020/495
Title:
Disperse rotation operator DRT and use in some stream ciphers
Authors: Kim Yong-Jin, Yon Yong-Ho, Jong Yu-Jin, Li Ok-Chol
Abstract:Abstract: Rotation operator is frequently used in several stream ciphers, including HC-128, Rabbit, and Salsa20, the final candidates for eSTREAM. This is because ‘Rotation operator (ROT)’ is simple but has very good dispersibility. In this paper, we propose a ‘disperse rotation operator (DRT)’, which has the same structure as ROT but has better dispersibility. In addition, the use of DRT instead of ROT has shown that the quality of the output stream of all three stream ciphers is significantly improved. On the other hand, the use of DRT instead of ROT in HC-128 stream cipher prevents the expansion of differentiated attacks based on LSB.
ePrint: https://eprint.iacr.org/2020/495
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