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ELECTRONIC COMMERCE SYSTEM, SERVICE PROVIDING SERVER, THIRD PARTY ORGANIZATION SERVER, ELECTRONIC COMMERCE METHOD, AND PROGRAM
ELECTRONIC COMMERCE SYSTEM, SERVICE PROVIDING SERVER, THIRD PARTY ORGANIZATION SERVER, ELECTRONIC COMMERCE METHOD, AND PROGRAM
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机译：电子商业系统，服务提供服务器，第三方组织服务器，电子商业方法和程序
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摘要
To obtain an analysis result of a transaction history without obtaining personal information of a user by a service provider.SOLUTION: A service providing server 2-n encrypts a transaction history by using a public key of homomorphic encryption. The service providing server 2-n transmits the encrypted transaction history and a circuit that performs desired analysis to a third party organization server 3. The third party organization server 3 combines the encrypted transaction history and personal information that matches a predetermined condition to generate analysis target data. The third party organization server 3 transmits the encrypted analysis result obtained by calculating a circuit for the analysis target data to the service providing server 2-n. The service providing server 2-n decrypts the encrypted analysis result received from the third party organization server 3 by using a secret key of homomorphic encryption to obtain the analysis result.SELECTED DRAWING: Figure 1
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