Cryptographic Hash
A fixed-length fingerprint derived from arbitrary input via a one-way function.
A cryptographic hash function turns arbitrary input — a string, a file — into a fixed-length value that cannot practically be reversed and that changes drastically when the input changes. SHA-256 is the modern default; MD5 and SHA-1 are still used for non-security checksums but are broken for collision resistance.
Reviewed by The Markvibe Team · Last updated 2026-06-28
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Related terms
- UUID (Universally Unique Identifier) — A 128-bit identifier designed to be unique across space and time without coordination.