What is the one-way property of a hash function?
Understand the Problem
The question is asking about the characteristics of a hash function, specifically its one-way property. This involves understanding that it should be difficult to derive the original input from its hash output.
Answer
The one-way property makes it computationally infeasible to find an input for a given output.
The one-way property of a hash function means it is computationally infeasible to find an input that maps to a pre-specified output. This makes it difficult to reverse-engineer the original input from the output.
Answer for screen readers
The one-way property of a hash function means it is computationally infeasible to find an input that maps to a pre-specified output. This makes it difficult to reverse-engineer the original input from the output.
More Information
This one-way feature is crucial for cryptographic hash functions, ensuring data integrity and security by making it difficult to reverse-engineer or predict the input from its hash.
Tips
A common mistake is misunderstanding 'one-way' as meaning it is impossible to find the original input, rather than just being computationally infeasible.
Sources
- Glossary - Cryptographic Hash Function - NIST - csrc.nist.gov
- One-Way Hash Function - ScienceDirect Topics - sciencedirect.com
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