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热词
    • 9. 发明授权
    • Search system, search method of search system, and information processing device
    • 搜索系统,搜索系统的搜索方法和信息处理设备
    • US09418238B2
    • 2016-08-16
    • US14001028
    • 2012-02-20
    • Takashi ItoMitsuhiro HattoriNori MatsudaKazuo OtaYusuke Sakai
    • Takashi ItoMitsuhiro HattoriNori MatsudaKazuo OtaYusuke Sakai
    • G06F21/62H04L9/00H04L9/08G06F21/60
    • G06F21/6218G06F21/6227G06F2221/2123H04L9/002H04L9/0894
    • A searchable encryption resistant to frequency analysis. A conversion rule management device generates a conversion rule table associating a search keyword with a conversion keyword group. Based on the conversion rule table, a data registration device generates registration data associating encrypted data with an encrypted keyword, and registers the registration data in a server device. An information processing device obtains from the conversion rule table a conversion keyword group associated with a specified search keyword, generates an encrypted keyword group, and requests a data search by specifying the encrypted keyword group. Using as a search key an encrypted keyword included in the encrypted keyword group, the server device searches for encrypted data associated with the search key, and returns searched encrypted data. The information processing device decrypts the searched encrypted data, and outputs as a search result search data obtained by decryption.
    • 可搜索的加密功能可抵抗频率分析。 转换规则管理装置生成将搜索关键字与转换关键字组关联的转换规则表。 基于转换规则表,数据登记装置生成将加密数据与加密关键词相关联的登记数据,并将注册数据登记在服务器装置中。 信息处理装置从转换规则表获得与指定搜索关键字相关联的转换关键字组,生成加密关键字组,并通过指定加密的关键字组来请求数据搜索。 使用包括在加密关键字组中的加密关键字作为搜索关键字,服务器设备搜索与搜索关键字相关联的加密数据,并返回搜索到的加密数据。 信息处理装置对所搜索的加密数据进行解密,并输出作为通过解密得到的搜索结果的搜索结果。