Definition ∞ Mathematical algorithms that take an input of arbitrary size and produce a fixed-size output, known as a hash. These functions are designed to be deterministic, meaning the same input always yields the same output, and computationally efficient to compute. They are fundamental to data integrity and security in many cryptographic applications.
Context ∞ ‘Hash Functions’ are central to blockchain technology, underpinning data structures like Merkle trees and ensuring the immutability of transaction records. Discussions often arise regarding the cryptographic strength of specific hash algorithms, particularly in the context of potential quantum computing threats. The selection and application of secure hash functions are critical for maintaining the security of digital assets and networks.
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