The Whirlpool hash algorithm was designed by Vincent Rijmen (co-designer of the AES encryption algorithm) and Paulo S. L. M. Barreto. The size of the output of this algorithm is 512 bits. The first version of Whirlpool, now called Whirlpool-0, was published
in November 2000. The second version, now called Whirlpool-T, was selected for the NESSIE (New European Schemes for Signatures, Integrity and Encryption) portfolio of cryptographic primitives (a project organized by the European
Union, similar to the AES competition). VeraCrypt uses the third (final) version of Whirlpool, which was adopted by the International Organization for Standardization (ISO) and the IEC in the ISO/IEC 10118-3:2004 international standard .