| With the continous development in trusted computing, applied in embeddedsystems has become an important branch of trusted computing technology. Due to thelimited process, storage ability and the specific application environment, to provide aneffective trusted computing software stack for embedded platform has become centralissue in trusted embedded technology.Aiming at the embedded trusted signature terminal, the key technologies realizing aspecific software stack were studied in this paper. In order to create a trustedenvironment for electronic signature in embedded environment, this paper studies keytechnologies to realize trusted software service stack firstly. A method to realize trustedmeasurement mechanism in embedded platform is proposed. Focus on a potential replayattack in the software stack's authorization protocols part, a new trusted computingauthorization protocol is designed. The security properties are analyzed and verified byBAN logic. Focus on embedded platform properties and electronic signature application,a simplified software stack and upper layer application program were implemented.Tests show that the modified software stack can provide platform integrity certificationand electronic signature function. |
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