SodsBC/SodsBC++ & SodsMPC: Post-quantum Asynchronous Blockchain Suite for Consensus and Smart Contracts

Shlomi Dolev, Ziyu Wang

פרסום מחקרי: פרק בספר / בדוח / בכנספרסום בספר כנסביקורת עמיתים

תקציר

SodsBC is the first asynchronous permissioned blockchain consensus (asynchronous BFT, aBFT in short) utilizing the concurrent preprocessing model to achieve post-quantum security while keeping high performance simultaneously. SodsBC concurrently preprocesses common random coins (from a global secret sharing pool) for the consensus necessary randomness usage, and also preprocesses symmetric encryption keys for considerable censorship resilience. The finalization of a stage of the global secret sharing pool utilizes the aBFT itself, as a transaction in the new block. SodsBC (and its followed work SodsBC++) is faster than the quantum-sensitive aBFT competitors. SodsMPC is a post-quantum smart contract system, in which all participants execute a contract by secure multi-party computation (MPC) protocols. MPC ensures the contract execution correctness while keeping the data privacy. Moreover, SodsMPC expresses the logic of a contract by a blind polynomial with secret-shared coefficients, and utilizes a finite state machine (FSM) to simplify the blind polynomial for better efficiency. When using MPC to compute this blind polynomial, the contract business logic privacy is obtained. SodsMPC participants also preprocess random permutation matrices to hide the real contract input relation, which protects the contract user anonymous identity.

שפה מקוריתאנגלית אמריקאית
כותר פרסום המארחStabilization, Safety, and Security of Distributed Systems - 23rd International Symposium, SSS 2021, Proceedings
עורכיםColette Johnen, Elad Michael Schiller, Stefan Schmid
מוציא לאורSpringer Science and Business Media Deutschland GmbH
עמודים510-515
מספר עמודים6
מסת"ב (מודפס)9783030910808
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 1 ינו׳ 2021
אירוע23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021 - Virtual, Online
משך הזמן: 17 נוב׳ 202120 נוב׳ 2021

סדרות פרסומים

שםLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
כרך13046 LNCS

כנס

כנס23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021
עירVirtual, Online
תקופה17/11/2120/11/21

ASJC Scopus subject areas

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  • ???subjectarea.asjc.1700.1700???

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