Cooperative Secret Sharing Using QR Codes and Symmetric Keys

Autor: Yang-Wai Chow, Willy Susilo, Joseph Tonien, Elena Vlahu-Gjorgievska, Guomin Yang
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Symmetry, Vol 10, Iss 4, p 95 (2018)
Druh dokumentu: article
ISSN: 2073-8994
DOI: 10.3390/sym10040095
Popis: Secret sharing is an information security technique where a dealer divides a secret into a collection of shares and distributes these to members of a group. The secret will only be revealed when a predefined number of group members cooperate to recover the secret. The purpose of this study is to investigate a method of distributing shares by embedding them into cover Quick Response (QR) codes in a secure manner using cryptographic keys. The advantage of this approach is that the shares can be disseminated over public channels, as anyone who scans the QR codes will only obtain public information. Only authorized individuals who are in possession of the required keys will be able to recover the shares. This also means that when group members cooperate to recover a secret, the group can determine the presence of an illegitimate participant if the person does not produce a valid share. This study proposes a protocol for accomplishing this and discusses the underlying security of the protocol.
Databáze: Directory of Open Access Journals
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