Whirlpool is a 512-bit cryptographic hash function designed by Vincent Rijmen (co-creator of AES) and Paulo Barreto. Published in 2000, it uses an AES-like substitution-permutation network and was standardized as ISO/IEC 10118-3. It is one of the few major hash functions structurally unrelated to SHA and MD families.

How is Whirlpool related to AES?

Both Whirlpool and AES were designed by Vincent Rijmen and use similar SPN structures. However, Whirlpool operates on 512-bit blocks (vs AES's 128-bit) and uses a different S-box design optimized for hashing rather than encryption.

Is Whirlpool still secure?

Yes. Whirlpool provides 256-bit security against collisions and has undergone extensive cryptanalysis since 2000. No practical attacks have been discovered. Its AES-like structure benefits from decades of analysis on block cipher design.

Where is Whirlpool used?

Whirlpool is used in FreeNet (the anonymous peer-to-peer network), some file integrity systems, and as an alternative to SHA-512 in applications requiring cryptographic diversity. It is also implemented in OpenSSL, Java, and .NET cryptographic libraries.

Whirlpool vs SHA-512: which to choose?

Both produce 512-bit hashes with 256-bit security. SHA-512 has wider adoption and better performance. Whirlpool offers cryptographic diversity — using a fundamentally different internal design (SPN vs Merkle-Damgard). For compliance, use SHA-512. For defense-in-depth, consider Whirlpool as an alternative verification hash.

Tools

Whirlpool|128 hex chars

Input

Output

Hash result will appear here...

0 chars|0 bytes

Whirlpool Hash Generator — AES-Based 512-bit ISO Standard

An AES-like block cipher design producing 512-bit hashes. ISO/IEC 10118-3 international standard. Used in the FreeNet anonymous network. Structurally unrelated to the SHA family.

Features

✓Compute Whirlpool hashes online — AES-based 512-bit ISO/IEC 10118-3 international standard
✓Real-time 512-bit hash computation with 128 hex character output
✓One-click copy, download as .txt, and uppercase/lowercase toggle
✓Structurally unrelated to SHA — provides cryptographic diversity and alternative security
✓Hash verification against known Whirlpool checksums
✓100% browser-based with zero server uploads

How to Use

1Type or paste your text into the input box above.
2Your hash digest appears instantly — no page reload needed.
3Toggle UPPERCASE / lowercase to change the hex output format.
4Click the copy icon to copy the hash to clipboard, or use Download to save as .txt.
5Paste an expected hash into the Verify field to check for a match.

Frequently Asked Questions

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