This is a cryptology question from the book Introduction to Modern Cryptography

ID: 3683971 • Letter: T

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This is a cryptology question from the book Introduction to Modern Cryptography by Katz and Lindell. If needed, please refer to the textbook's online pdf to answer the question. Please answer BOTH parts of the question fully, and with any necessary examples/proofs. Please show ALL steps and explain logic fully. Let (Gen; H) be a collision-resistant hash function and let F be a PRF. For each of the following, state whether H is necessarily collision resistant. Justify your answer. H^s (x_1 ||x_2): = H^s(x_1) || H^s(x_2) H^s(x_1||x_2): = H^s(x_1 x_2)

Explanation / Answer

A function has to satisfy the following conditions to be qualified as a Collision resistant hash function First it has to be a hash function For every a = b/2, a must be

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This is a cryptology question from the book Introduction to Modern Cryptography

This is a cryptology question. If needed, please refer to the course textbook, I

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This is a cryptology question from the book Introduction to Modern Cryptography

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