End-to-end encrypted file search system without privacy leakage

• Main Authors: MA JIANFENG, MIAO YINBIN, WANG XIANGYU, MA XINDI, LU JIYUAN
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a privacy-leakage-free end-to-end encrypted file search system, which comprises client equipment for generating a binary hybrid filter for a file and encrypting the binary hybrid filter; respectively sending the encrypted binary hybrid filter to a first cloud server and a second cloud server for storage; constructing a distributed multipoint function according to the query keyword, generating a first key and a second key, and sending the first key and the second key to the two servers; and the two servers are used for searching the encrypted binary hybrid filter according to own keys and returning the encrypted search data to the client equipment, so that the client equipment obtains a search result according to the first encrypted search data and the second encrypted search data. According to the method, efficient search is realized on the basis of protecting data privacy. 本发明公开了一种无隐私泄漏的端到端的加密文件搜索系统，包括：客户端设备，用于为文件生成二进制混合过滤器并将其加密；将加密二进制混合过滤器分别发送至第一和第二云服务器中存储；根据查询关键词构建分布式多点函数，并生成第一密钥和第二