Cryptography
Cryptographic Hash
A fixed-size digital fingerprint produced by a hash function that uniquely identifies data.
What is a Cryptographic Hash?
A cryptographic hash is a mathematical function that converts input data of any size into a fixed-size string of characters. Even a tiny change in input produces a completely different hash output.
SHA-256
SHA-256 is the industry standard hash function used by Danaya. It produces a 256-bit (64 character hex) hash that is computationally infeasible to reverse or forge.
Use in Media Authentication
By computing the SHA-256 hash of a media file at the time of capture, Danaya creates a unique fingerprint. Any subsequent modification to the file will produce a different hash, immediately revealing tampering.
Related Terms
Data Integrity
The assurance that data has not been altered or corrupted since its creation.
Hash Function
A mathematical function that maps data of arbitrary size to a fixed-size value.
SHA-256
A cryptographic hash function that produces a 256-bit hash value, widely used for data integrity verification.