SHA3-384 Hash Generator

About

SHA-3 is the latest member of the Secure Hash Algorithm family of standards, released by NIST on August 5, 2015. SHA-3 is different from SHA-1 and SHA-2, which have an MD5-like structure.

Keccak is a cryptographic primitive family that includes SHA-3. It was designed by Guido Bertoni, Joan Daemen, Michaël Peeters, and Gilles Van Assche, building upon RadioGatún. Keccak's authors have proposed additional uses for the function, not (yet) standardized by NIST, including a stream cipher, an authenticated encryption system, a "tree" hashing scheme for faster hashing on certain architectures, and AEAD ciphers Keyak and Ketje.

Keccak is a flexible way to create a pseudorandom function using a wide random function or permutation. This means that it can take any amount of data as input, and output any amount of data, while still maintaining the pseudorandom function.

NIST does not plan to remove SHA-2 from the revised Secure Hash Standard. The purpose of SHA-3 is to be a direct substitution for SHA-2 in current applications, and to improve the robustness of NIST's hash algorithm toolkit.

The creators of the Keccak algorithms suggest using the faster function KangarooTwelve with adjusted parameters for small message sizes.

The Keccak algorithm was designed by Guido Bertoni, Joan Daemen, Michael Peeters, and Gilles Van Assche. This hash function is based on earlier designs, PANAMA and RadioGatún. PANAMA was designed by Daemen and Craig Clapp in 1998. RadioGatún, a successor of PANAMA, was designed by Daemen, Peeters, and Van Assche, and was presented at the NIST Hash Workshop in 2006. The source code for the reference implementation was dedicated to the public domain under a CC0 waiver.