Spontaneous Group Cryptography and Its Applications

Project: Research

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Researcher(s)

Description

Spontaneous group cryptography is the study of methods for allowing a few members of a group toanonymouslyperform cryptographic operations on behalf of the group. Typical spontaneous group cryptographic operations include ring signature (and its abundant variants), deniable ring authentication, and verifiable ring encryption. It is an effective tool to achieve various extents of anonymity. One of the predominant features of spontaneous group cryptography is the freedom of group formation, which does not require a trusted third party or group manager, or any cooperation among the group members. Over recent years, there have been significant advances in this area of research, and the researchers of this project have made some remarkable contributions in solving challenging problems and proposing novel ideas and useful techniques in this field. In this project, they will investigate further in the following areas:enhancing the security of ring signature schemes and their variants;devising efficient and constant-size (linkable) ring signature schemes with separable public key settings;proposing new applications for ring signature and its variants; andstudying new techniques to construct more efficient and provably secure verifiable ring encryption schemes.

Detail(s)

Project number9041265
Grant typeGRF
StatusFinished
Effective start/end date1/01/089/02/10