[Resource Topic] 2011/037: Higher-Order Differential Attack on Reduced SHA-256

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Higher-Order Differential Attack on Reduced SHA-256

Authors: Mario Lamberger, Florian Mendel


In this work, we study the application of higher-order differential attacks on hash functions. We show a second-order differential attack on the SHA-256 compression function reduced to 46 out of 64 steps. We implemented the attack and give the result in Table 1. The best attack so far (in a different attack model) with practical complexity was for 33 steps of the compression function.

ePrint: https://eprint.iacr.org/2011/037

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