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Abstract
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Article Information:
Analysis of building blocks in SHA – 256
A.Arul Lawernce selvakumar and Dr. R.S.Ratastogi
Corresponding Author: Arul Lawrence selvakumar
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Abstract:
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In this study, we analyse the role of some of the building blocks in SHA-256. We show that the
disturbance correction strategy is applicable to the SHA-256 architecture and we prove that functions ∑, σ are
vital for the security of SHA-256 by showing that for a variant without them it is possible to Wnd collisions with
complexity 264 hash operations. As a step towards an analysis of the full function, we present the results of our
experiments on Hamming weights of expanded messages for different variants of the message expansion and
show that there exist low-weight expanded messages for XOR-linearised variants.
Key words: Hash functions, collisions, optimization, mess age expans ion, , ,
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Cite this Reference:
A.Arul Lawernce selvakumar and Dr. R.S.Ratastogi, . Analysis of building blocks in SHA – 256. Research Journal of Applied Sciences, Engineering and Technology, (1): Page No: 10-15.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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