Hash Identifier

A hash identifier is a tool used to identify the hash function that likely generated a given hash. A hash function is a deterministic application that associates an arbitrary input with a fixed-length output, called a hash or digest.

There are several hundred hashing algorithms. The resulting hash is a sequence of bits, usually represented in hexadecimal (base 16), sometimes in Base64 or other formats.

Identification relies primarily on structural clues: hash length, the alphabet used, and the possible presence of specific prefixes or separators.

This identification remains probabilistic: several algorithms can produce hashes of the same length and format.

Indicate the character string that serves as a fingerprint. Take care not to add unnecessary elements, such as a space or a stop at the end, as these irrelevant characters could confuse the detector.

By their nature, hashes cannot be decoded/hashed (this is one-way encryption). However, dCode offers tools for the most used hash types, which use dictionaries of hashes (rainbow tables) generated from the most common passwords.

See the dedicated pages: MD5, SHA-1, SHA256, etc.

The identifier compares the provided hash to known patterns corresponding to the formats produced by different hash functions. The analysis focuses primarily on: character length, the alphabet used (hexadecimal, Base64, specific characters), and the presence of prefixes or particular structures.

This is not a cryptographic analysis of the content, but rather a format signature recognition.

The tool relies on a database of algorithm formats called Haiti, developed by Orange Cyberdefense (here MIT license) and maintained by noraj.

This database contains several hundred hash format signatures.

The identifier does not verify whether the hash actually corresponds to a valid output of a given algorithm, only whether its format is compatible.