Question: 11.1 What characteristics are needed in a secure hash function? 11.2 What is the difference between weak and strong collision resistance? 11.3 What is the

11.1 What characteristics are needed in a secure hash function? 11.2 What is the difference between weak and strong collision resistance? 11.3 What is the role of a compression function in a hash function? 11.4 What is the difference between little-endian and big-endian format? 11.5 What basic arithmetical and logical functions are used in SHA? 11.6 Describe the set of criteria used by NIST to evaluate SHA-3 candidates. 11.7 Define the term sponge construction. 11.8 Briefly describe the internal structure of the iteration function f. 11.9 List and briefly describe the step functions that comprise the iteration function f.

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