Oblivious signature-based envelope without secure channel
Wang Ji-lin, Xiaofeng Chen · Journal of Zhejiang University(Engineering Science) · 2006
Exchange of digitally signed certificates was often used to establish mutual trust between strangers that wish to share resources or to conduct business transactions.Automated trust negotiation(ATN) was an approach to regulate the flow of sensitive information during such an exchange.But ATN cannot handle cyclic policy interdependency satisfactorily.Oblivious signature-based envelope(OSBE) is a scheme to solve this problem.However,the existed scheme could only be implemented on a secure channel.An efficient OSBE scheme without the secure channel is proposed using the ideas of identity-based systems and certificate-based encryption,which satisfies all the properties required by OSBE such as soundness and oblivious et al.Also,the scheme can achieve the desired security notations in the random oracle model.