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Paper 2020/158

Jump index in T-functions for designing a new basic structure of stream ciphers

Ali Hadipour and Seyed Mahdi Sajadieh and Raheleh Afifi

Abstract

The stream ciphers are a set of symmetric algorithms that receive a secret message as a sequence of bits and perform an encryption operation using a complex function based on key and IV, and combine xor with bit sequences. One of the goals in designing stream ciphers is to obtain a minimum period, which is one of the primary functions of using T-functions. On the other hand, the use of jump index in the design of LFSRs has made the analysis of LFSR-based stream ciphers more complicated. In this paper, we have tried to introduce a new method for designing the initial functions of stream ciphers with the use of T-functions concepts and the use of jump indexes, that has the maximum period. This method is resist side-channel attacks and can be efficiently implemented in hardware for a wide range of target processes and platforms.

Note: New basic structure for designing primitives of stream ciphers

Metadata
Available format(s)
PDF
Category
Foundations
Publication info
Preprint. MINOR revision.
Keywords
T-FunctionJump IndexStream cipherMaximum Period
Contact author(s)
a hadipour64 @ gmail com
History
2020-02-13: received
Short URL
https://ia.cr/2020/158
License
Creative Commons Attribution
CC BY
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