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  Sha-zam: Short Circuiting Cryptanalysis

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by Sarvar Patel, Zulfikar Ramzan, Ganesh Sundaram
http://theory.lcs.mit.edu/%7Ezulfikar/MyResearch/../papers/nov3.ps
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Abstract:

This document is intended to clarify and explain proof-theoretic cryptography with a view towards explaining the value this approach adds to the design of ciphers. In addition the material contained within should address most of the questions that were triggered by discussions among AHAG participants. Moreover, we discuss in detail the precise design choices, related to Sha-zam, and why we made them. The overall conclusion is: based on the design and mathematical proofs related to Sha-zam, and the trust that we have on various properties of SHA-1, Sha-zam does not require any cryptanalysis. 1

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