Efficient and Secure Trust Negotiation over the Internet

Trust management can be applied to deal with a number of security issues in virtual networks. In internet communications, efficient and secure trust negotiation between virtual individuals/organizations is very important because it can achieve resource sharing, collaborative computing and communication security. This investigation aims to strengthen the efficiency and security of trust negotiation by (1) introducing a new negotiation strategy to set up trust relationships, (2) using more precise principles to attain better access control policy assignments, and (3) involving iterative computation and a cache mechanism to further enhance negotiation efficiency. Experimental evaluation shows that our new scheme, which achieves a well-balanced tradeoff between efficiency and security, is able to outperform related schemes in most situations.