Communication terminal

摘要

The present invention provides an electronic wallet having a higher level of anonymity, security and convenience, which is capable of efficient electronizing of value information as well as which allows the user to efficiently manage the electronic value information. A presentation card 801 indicating the fixed property of an electronic value is digitally signed by the service provider; a variable property 802 is digitally signed with the private key of that electronic value. A service control 803, security information 804, representation control 805 and representation resource 806 are digitally signed by the service provider. These digital signature will be authenticated each time an electronic value object is generated.