Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/51183
Title: On design and analysis of symmetric key ciphers
Authors: Nguyen, Phuong Ha
Keywords: DRNTU::Science::Mathematics::Applied mathematics::Information theory
Issue Date: 2013
Source: Nguyen, P. H. (2013). On design and analysis of symmetric key ciphers. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: This thesis studies the cryptanalysis and design of some cryptographic algorithms in symmetric key ciphers. Block ciphers and Stream ciphers are two backbone elements in symmetric key ciphers. We cryptanalyze ZUC stream cipher, SERPENT, KASUMI and SMS4 block ciphers by using some new improved cryptographic methodologies, tools and algorithms. Based on the results obtained in cryptanalysis, we propose some modifications in the designs of ZUC, KASUMI and SMS4 to enhance their security. Additionally, we introduce several methodologies to enable and efficiently implement 3-share Threshold Implementation to any 4-bit S-box. Threshold Implementation is widely accepted as a countermeasure against first order Differential Power Analysis in Side Channel Attack and 3-share version is the most efficient in terms of hardware implementation. To support the theoretical results, we construct 3-share Threshold Implementations to S-boxes of PRESENT, SERPENT ciphers. Notably, 3-share version was believed to be not possible for some S-boxes of SERPENT until now.
URI: https://hdl.handle.net/10356/51183
DOI: 10.32657/10356/51183
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Theses

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