Method of data sealing based on property with zero-knowledge proof

Abstract

By analyzing the definition of the platform configuration registers(PCRs) in the trusted computing platform(TCP) by the trusted computing group(TCG) and combining related researches for techniques of data sealing,a method for property representation of the trusted platform.This method not only can fully illustrate all the characteristics of a trusted computing platform is proposed,but also can make the verification process of the properties with the zero-knowledge proof more conveniently.As well known,one major and inherent defect of trusted computing platform is its exposure for user's privacy.Aiming at overcoming such a drawback,a method of data sealing based on property with zero-knowledge proof is proposed.And in this method,a Trusted Third Party is invited to make proof for verifying the trusted platform.The analysis for security of the method is presented and verification is made for it by experiment.Results from the experiment shows that,this method maintains as the same advantages as other existed schemes,whereas only with a small quantity of data cost.Such small data incrementation not only supports unsealing at remote server,but also works well for preventing privacy disclosure in a trusted platform.