History Binding Signature: (Extended Abstract)

Shlomi Dolev, Matan Liber

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Digital signatures are used to verify the authenticity of digital messages, that is, to know with a high level of certainty, that a digital message was created by a known sender and was not altered in any way. This is usually achieved by using asymmetric cryptography, where a secret key is used by the signer, and the corresponding public key is used by those who wish to verify the signed data. In many use-cases, such as blockchain, the history and order of the signed data, thus the signatures themselves, are important. In blockchains specifically, the threat is forks, where one can double-spend its crypto-currency if one succeeds to publish two valid transactions on two different branches of the chain. We introduce a single private/public key pair signature scheme using verifiable random function, that binds a signer to its signature history. The scheme enforces a single ordered signatures’ history using a deterministic verifiable chain of signature functions that also reveals the secret key in case of misbehaviors.

Original languageEnglish
Title of host publicationCyber Security Cryptography and Machine Learning - 5th International Symposium, CSCML 2021, Proceedings
EditorsShlomi Dolev, Oded Margalit, Benny Pinkas, Alexander Schwarzmann
PublisherSpringer Science and Business Media Deutschland GmbH
Pages221-229
Number of pages9
ISBN (Print)9783030780852
DOIs
StatePublished - 1 Jan 2021
Event5th International Symposium on Cyber Security Cryptography and Machine Learning, CSCML 2021 - Be'er Sheva, Israel
Duration: 8 Jul 20219 Jul 2021

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume12716 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference5th International Symposium on Cyber Security Cryptography and Machine Learning, CSCML 2021
Country/TerritoryIsrael
CityBe'er Sheva
Period8/07/219/07/21

Keywords

  • Digital signature
  • Verifiable random function
  • Verifiable secret sharing

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