Moderated Redactable Blockchains: A Definitional Framework with an Efficient Construct
- Publikationstyp:
- Konferenzbeitrag
- Metadaten:
-
- Autoren
- Mohammad Sadeq Dousti
- Alptekin Küpçü
- DOI
- 10.1007/978-3-030-66172-4_23
- eISSN
- 1611-3349
- ISBN-13
- 9783030661717
- ISSN
- 0302-9743
- Online publication date
- 2020
- Paginierung
- 355 - 373
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Herausgeber
- Springer International Publishing
- Herausgeber URL
- http://dx.doi.org/10.1007/978-3-030-66172-4_23
- Datum der Datenerfassung
- 2021
- Titel
- Moderated Redactable Blockchains: A Definitional Framework with an Efficient Construct
Datenquelle: Crossref
- Andere Metadatenquellen:
-
- Abstract
- Blockchain is a multiparty protocol to reach agreement on the order of events, and to record them consistently and immutably without centralized trust. In some cases, however, the blockchain can benefit from some controlled mutability. Examples include removing private information or unlawful content, and correcting protocol vulnerabilities which would otherwise require a hard fork. Two approaches to control the mutability are: moderation, where one or more designated administrators can use their private keys to approve a redaction, and voting, where miners can vote to endorse a suggested redaction. In this paper, we first present several attacks against existing redactable blockchain solutions. Next, we provide a definitional framework for moderated redactable blockchains. Finally, we propose a provable and efficient construct, which applies a single digital signature per redaction, achieving a much simpler and secure result compared to the prior art in the moderated setting.
- Autoren
- Mohammad Sadeq Dousti
- Alptekin Küpçü
- DOI
- 10.1007/978-3-030-66172-4_23
- Editoren
- Joaquin Garcia-Alfaro
- Navarro-Arribas Guillermo
- Herrera-Joancomarti Jordi
- Conference finish date
- 2020
- Schlüsselwörter
- Blockchain
- Bitcoin
- Moderated redactable blockchain
- Formal threat model
- Signature scheme
- Conference place
- Guildford, UK
- Name of conference
- DPM 2020, CBT 2020: Data Privacy Management, Cryptocurrencies and Blockchain Technology
- Paginierung
- 355 - 373
- Status
- Published
- Herausgeber
- Springer
- Herausgeber URL
- https://link.springer.com/chapter/10.1007%2F978-3-030-66172-4_23
- Datum der Datenerfassung
- 2021
- Conference start date
- 2020
- Titel
- Moderated Redactable Blockchains: A Definitional Framework with an Efficient Construct
Datenquelle: Manual
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