Whirlpool Generator

About Whirlpool Generator

Whirlpool is a 512-bit hash function designed by Vincent Rijmen and Paulo Barreto and standardized in ISO/IEC 10118-3. This tool computes the real digest of your text, the final 2003 version, and prints it as 128 lowercase hex characters. The calculation is done by code on the page, since browsers have no built-in Whirlpool, and the same text always gives the same result.

How to use it

1. Type or paste into the Text to Hash box, or select Upload File to hash a file by its raw bytes.
2. Select Generate Whirlpool Hash. Whitespace-only text with no file chosen is refused with a message.
3. Read the 128-character hexadecimal digest that appears in the Whirlpool Hash box.
4. Use the copy button above the box to take the value, then compare it with a published checksum or a reference implementation.

The standard test string

abc

4e2448a4c6f486bb16b6562c73b4020bf3043e3a731bce721ae1b303d97e6d4c7181eebdb6c57e277d0e34957114cbd6c797fc9d95d8b582d225292076d4eef5

When to use it

• Producing a Whirlpool checksum for a short string to compare against a value published by a vendor or an archive.
• Cross-checking the output of a Whirlpool library you are integrating against the reference vectors.
• Showing how Whirlpool digest length and construction differ from SHA-2 and SHA-3 before choosing an algorithm.
• Confirming that a database column is wide enough for a 64-byte, 128-character hex digest.

Questions about Whirlpool Generator

Is the value shown a real Whirlpool digest?

Yes. It is checked against the official test values, including the empty string, abc and The quick brown fox jumps over the lazy dog. Identical input always yields the identical 128-character string, and the text is encoded as UTF-8 first.

How is Whirlpool built?

It uses the Miyaguchi-Preneel construction around a dedicated AES-like block cipher that works on an 8 by 8 byte state with 512-bit blocks and ten rounds. It produces a 512-bit digest, shown as 128 hex characters.

Which Whirlpool version is computed here?

The final 2003 revision, often called simply Whirlpool. Two earlier versions, Whirlpool-0 and Whirlpool-T, produce different digests and were superseded after review, so check which one a system expects.

What is the digest of an empty input?

It starts 19fa61d7 and ends 42a66eb3. The tool asks for some text before it runs, so use a reference implementation for that case; it is a handy vector when validating your own code.

Where is Whirlpool used in practice?

It appears as an optional hash in disk-encryption software such as VeraCrypt and in some file-integrity tools. It never became as widespread as SHA-2 or SHA-3 in protocols.

Related tools

• MD5 GeneratorGenerate an MD5 hash from text
• SHA GeneratorGenerate SHA-1, SHA-256, SHA-384, and SHA-512 hashes
• Bcrypt GeneratorGenerate a bcrypt hash from text
• CRC32 checksum generatorCalculate the CRC32 checksum of text or a file in hexadecimal and decimal.
• Passphrase generatorGenerate memorable Diceware-style passphrases with a live strength estimate.
• Htpasswd generatorCreate Apache .htpasswd entries from a username and password.