Secure Outsourcing of Computation using Smart Contracts by Rei Safavi-Naini

Room 288- ICICS Building (2366 Main Mall)

Abstract:
 

Outsourcing computation enables a weak client to delegate its computational tasks to other computing agents (e.g. cloud) who are willing to perform the computation and be compensated for their work. A basic security requirement of the client is to be able to confident about the correctness of the received result. Verifiable computation systems enable the client to efficiently verify the correctness of the received results.

Smart contracts have been used as an automated and transparent trusted party to mediate verifiable computation protocols, and manage payments and rewards according to the protocol description.

In this talk we show security challenges of these systems, look at two verifiable computation systems that are mediated by smart contracts, show concrete attacks on these systems and propose protections mechanisms.

 



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First Nations land acknowledegement

We acknowledge that the UBC Point Grey campus is situated on the traditional, ancestral, and unceded territory of the xʷməθkʷəy̓əm.

Blockchain@UBC

Computing, Information and Cognitive Systems, ICICS 179 – 2366 Main Mall
Vancouver, BC Canada V6T 1Z4
E-mail blockchain.ubc@ubc.ca

Research Excellence Clusters at UBC Vancouver is a joint initiative of the Provost and Vice-President, Academic, UBC Vancouver and the Vice-President, Research and Innovation. Funding support for the clusters is provided by Academic Excellence Funds – UBC Vancouver.

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