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New versions of Multibase and Multihash published

From: Manu Sporny <msporny@digitalbazaar.com>
Date: Fri, 19 Feb 2021 14:51:27 -0500
To: W3C Verifiable Credentials Working Group <public-vc-wg@w3.org>
Message-ID: <1e74270e-4461-a0e0-da74-3dfbd15c6900@digitalbazaar.com>
New versions of the Multibase and Multihash specs have been published.

Multibase is just a date bump to signal that the specification is still alive
and being used. There are no new base-encoding mechanisms that have been added
to this release. This community uses multibase to encode a number of values,
like signature values and did:key values, in Verifiable Credentials and
Decentralized Identitifer Documents:

https://datatracker.ietf.org/doc/html/draft-multiformats-multibase-03

Multihash adds the KangarooTwelve hash function to the list of available hash
functions. KangarooTwelve's strongest draw is that it's fun to say out loud...
and is a KECCAK-based highly parallel hash function, if you're into that sort
of thing. This community uses multihash in some DID Methods (Veres One uses it
for hash values for operations and blocks), and the DID Core specification
uses multihash for Hashlinks (to provide integrity protection for DID Documents):

https://datatracker.ietf.org/doc/html/draft-multiformats-multihash-02

Fairly boring stuff, but nevertheless, foundational building blocks upon which
many of us have built our implementations.

-- manu

-- 
Manu Sporny - https://www.linkedin.com/in/manusporny/
Founder/CEO - Digital Bazaar, Inc.
blog: Veres One Decentralized Identifier Blockchain Launches
https://tinyurl.com/veres-one-launches
Received on Friday, 19 February 2021 19:51:44 UTC

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