Definition ∞ A Universal Hash Function is a family of hash functions where a hash function is chosen randomly from the family. This selection ensures that the probability of collisions between any two distinct keys is minimized. It provides strong theoretical guarantees against adversarial attacks that might try to force collisions. Such functions are essential for data integrity and security.
Context ∞ In blockchain and cryptographic systems, Universal Hash Functions are fundamental for maintaining data integrity, ensuring efficient data structures like hash tables, and securing various cryptographic protocols. News articles discussing advancements in cryptographic security or data storage solutions often implicitly rely on the principles behind such functions. Their use underpins the reliability of distributed ledgers.
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