39 search results - page 4 / 8 » A Group-based Authorization Model for Cooperative Systems |
ICICS
2010
Springer
13 years 5 months ago
2010
Springer
Threshold public-key encryption (TPKE) allows a set of users to decrypt a ciphertext if a given threshold of authorized users cooperate. Existing TPKE schemes suffer from either lo...
ACMDIS
2006
ACM
14 years 1 months ago
2006
ACM
Human-Computer Interaction (HCI) is defined by the Association for Computing Machinery (ACM) Special Interest Group on Computer-Human Interaction (SIGCHI) as “a discipline conce...
CHI
2005
ACM
14 years 7 months ago
2005
ACM
The Community Bar is a groupware tool supporting informal awareness and casual interaction for small communities of intimate collaborators. Its conceptual design is primarily base...
FTDCS
1997
IEEE
13 years 11 months ago
1997
IEEE
In the paper we present an overview of Saga Security System, a security architecture in open distributed systems. An agent in Saga Security System is called a Saga Agent. The auth...
CHI
2009
ACM
14 years 8 months ago
2009
ACM
User interfaces and information systems have become increasingly social in recent years, aimed at supporting the decentralized, cooperative production and use of content. A theory...