Impact of rotations in the Salsa20/8 image encryption scheme

Alireza Jolfaei, Abdolrasoul Mirghadri, Ahmadreza Vizandan

Research output: Contribution to journalArticlepeer-review


Salsa20 uses a single set of rotation distances within its core function. To our knowledge, no design rationales on the choice of rotation distances are given on the Salsa20 core function. This is the first paper that analyzes rotations influence over the output sequence in the Salsa20 image encryption scheme. We focus on the Salsa20/8 image encryption scheme and use recent developments in the analysis of the Salsa20 core function to evaluate the security implications of using different sets of rotation distances in the core function. Finally, we give some observations on the some sets of rotation distances used in the Salsa20/8 image encryption scheme.
Original languageEnglish
Pages (from-to)938-943
Number of pages6
JournalInternational Journal of Computer Theory and Engineering
Issue number6
Publication statusPublished - 2012
Externally publishedYes

Bibliographical note

Originally published in: Proceedings of the 4th IEEE International Conference on Computer Science and Information Technology (2011) p. 351-357


  • Salsa20
  • image encryption
  • rotation distance


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