Diffusion analysis of EFN-MDS structure
In general, block ciphers consist of one top-level structural model into which the round function F is plugged into. The study focuses on Extended-Feistel- Network (EFN) that is a generalization of a Feistel Network (FN). This structure is employed in several ciphers that were developed for Advanced...
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| தலைமை எழà¯à®¤à¯à®¤à®¾à®³à®°à¯à®•à®³à¯: | , |
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| வடிவமà¯: | Conference or Workshop Item |
| மொழி: | English |
| வெளியீடபà¯à®ªà®Ÿà¯à®Ÿà®¤à¯: |
2006
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| பகà¯à®¤à®¿à®•à®³à¯: | |
| நிகழà¯à®¨à®¿à®²à¯ˆ அணà¯à®•à®²à¯: | http://eprints.utm.my/2251/ http://eprints.utm.my/2251/ http://eprints.utm.my/2251/1/SubariahIbrahim2006_DiffusionAnalysisOfEFN-MDSStructure.pdf |
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| தொகà¯à®ªà¯à®ªà¯: | In general, block ciphers consist of one top-level structural model into which the round function F is plugged into. The study focuses on Extended-Feistel- Network (EFN) that is a generalization of a Feistel Network (FN). This structure is employed in several ciphers that were developed for Advanced Encryption Standard such as CAST-256, MARS and RC6. The problem with EFN is that it requires many rounds when the number of sub-blocks used in EFN is large. This paper proposed a new structural model that can overcome this problem by incorporating EFN with a linear transformation based on Maximum Distance Separable (MDS) codes. The diffusion analysis shows that EFN-MDS requires at most half the number of rounds to achieve completeness property as compared to EFN structure. Therefore the proposed structure is suitable for designing ciphers with scalable |
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