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Mitigating DDoS via Proof of Patience

From: Manu Sporny <msporny@digitalbazaar.com>
Date: Sun, 28 Jun 2015 02:12:09 -0400
Message-ID: <558F9039.70504@digitalbazaar.com>
To: Credentials Community Group <public-credentials@w3.org>
Keeping the Credentials CG in the loop...

We're in the process of building out some of the Decentralized Hash
Table functionality for the identifiers that we expect will be needed
for credential portability. Part of this work requires that the
decentralized identifiers should be protected from distributed denial of
service attacks. We have created a new type of proof, called a "Proof of
Patience", that helps mitigate against these sorts of attacks in a way
that is more effective than proof of work.

The technology has been written up in IETF RFC form and published here:



   For a client to access a particular resource on the Web, a server
   must expend a certain amount of computational effort to respond to
   the request.  In some cases this computational effort is sizeable and
   the server may want to only respond to certain clients.  For example,
   in a distributed denial-of-service attack, a server may require all
   clients to expend a certain amount of resources via a client-run
   proof-of-work algorithm to throttle the number of incoming requests
   to a more manageable number.  This document details a new
   authentication scheme for HTTP that may be used to request and
   transmit proofs in HTTP headers.

-- manu

Manu Sporny (skype: msporny, twitter: manusporny, G+: +Manu Sporny)
Founder/CEO - Digital Bazaar, Inc.
blog: Web Payments: The Architect, the Sage, and the Moral Voice
Received on Sunday, 28 June 2015 06:12:35 UTC

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