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

Shlomi Dolev, Ziyu Wang

نتاج البحث: فصل من :كتاب / تقرير / مؤتمرمنشور من مؤتمرمراجعة النظراء

ملخص

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.

اللغة الأصليةإنجليزيّة أمريكيّة
عنوان منشور المضيفStabilization, Safety, and Security of Distributed Systems - 23rd International Symposium, SSS 2021, Proceedings
المحررونColette Johnen, Elad Michael Schiller, Stefan Schmid
ناشرSpringer Science and Business Media Deutschland GmbH
الصفحات510-515
عدد الصفحات6
رقم المعيار الدولي للكتب (المطبوع)9783030910808
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 1 يناير 2021
الحدث23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021 - Virtual, Online
المدة: ١٧ نوفمبر ٢٠٢١٢٠ نوفمبر ٢٠٢١

سلسلة المنشورات

الاسمLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
مستوى الصوت13046 LNCS

!!Conference

!!Conference23rd International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2021
المدينةVirtual, Online
المدة١٧/١١/٢١٢٠/١١/٢١

All Science Journal Classification (ASJC) codes

  • !!Theoretical Computer Science
  • !!General Computer Science

بصمة

أدرس بدقة موضوعات البحث “SodsBC/SodsBC++ & SodsMPC: Post-quantum Asynchronous Blockchain Suite for Consensus and Smart Contracts'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا