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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/16193

Title: Revisited Diffusion Analysis of Salsa and ChaCha
Authors: MATSUOKA, Yusuke
MIYAJI, Atsuko
Issue Date: 2018-10
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Magazine name: 2018 International Symposium on Information Theory and Its Applications (ISITA)
Start page: 452
End page: 456
DOI: 10.23919/ISITA.2018.8664391
Abstract: Both ChaCha and AES are standardized as symmetric ciphers in TLS 1.3; AES is a block cipher, whereas ChaCha is a stream cipher. The security of AES has been studied by many researchers. ChaCha, however, needs more security analysis because it has been proposed more recently, compared with AES. Furthermore, ChaCha is improved from Salsa from the point of view of diffusion and thus, diffusion analysis of Salsa and ChaCha is important to understand their security-design criteria. In this study, we revisit diffusion analysis and investigate weak bits and weak columns of Salsa and ChaCha. To the authors'knowledge, this is the first detailed diffusion analysis of Salsa and ChaCha.
Rights: Copyright (C)2018 IEICE. Yusuke MATSUOKA and Atsuko MIYAJI, 2018 International Symposium on Information Theory and Its Applications (ISITA), 2018, pp.452-456. http://dx.doi.org/10.23919/ISITA.2018.8664391
URI: http://hdl.handle.net/10119/16193
Material Type: publisher
Appears in Collections:b11-1. 会議発表論文・発表資料 (Conference Papers)

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