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Cryptographic Hash Function

Cryptographic Hash Function

Last Updated: January 23, 2026

Cryptographic Hash Function is a mathematical algorithm converting input data into a fixed-size string, ensuring data integrity.

Cryptographic Hash Function is a fundamental concept in cryptography. It converts any input data into a fixed-size string of characters, typically a hash code. This process is deterministic, meaning the same input will always yield the same output. It's designed to be quick, with any slight change in input producing a significantly different hash. These functions are irreversible, making it nearly impossible to retrieve original data from its hash. Commonly used for data integrity verification, password storage, and digital signatures, cryptographic hash functions ensure data has not been tampered with during transmission or storage.