CERTIFIED-IN-CYBERSECURITY Question #228: Real Exam Question with Answer & Explanation

The correct answer is A: ... a mathematical function that generates a fixed-size string of characters. A hash function is a mathematical function that takes an input or 'message' and generates an output or 'hash value', usually much smaller than the original message, typically of a fixed-size (see ISC2 Study Guide, Module 1, under Encryption Overview). Hash functions are used to g

Security Principles

Question

A hash function is ...:

Options

A... a mathematical function that generates a fixed-size string of characters
B... a unique identifier assigned to a computer network
C... a cryptographic algorithm used for encryption
D... a method for compressing data to reduce storage requirements

Explanation

A hash function is a mathematical function that takes an input or 'message' and generates an output or 'hash value', usually much smaller than the original message, typically of a fixed-size (see ISC2 Study Guide, Module 1, under Encryption Overview). Hash functions are used to generate unique representations of data or verify data integrity and are a crucial element of cryptographic systems.

Topics

#Hash Function#Cryptography Basics#Security Principles#Data Integrity

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