Define a Cryptographic hash function and describe its characteristics.

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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(a)
(b)
Define a Cryptographic hash function and describe its characteristics.
Consider a hash function h: {0,1}* →{0,13". Suppose h is second preimage resistant
and collision resistant.
Define a function h₁ : {0,1}{0,1}" by
[0||x if x = {0,1}"
[1|| x otherwise
Discuss the properties of h, as a cryptographic hash function.
h₁
Transcribed Image Text:(a) (b) Define a Cryptographic hash function and describe its characteristics. Consider a hash function h: {0,1}* →{0,13". Suppose h is second preimage resistant and collision resistant. Define a function h₁ : {0,1}{0,1}" by [0||x if x = {0,1}" [1|| x otherwise Discuss the properties of h, as a cryptographic hash function. h₁
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