Multi-party cooperation ciphertext search system, method, device and medium

• Main Authors: SUN ZONGCHEN, DU MANXIANG, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 03.01.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention provides a multi-party cooperation ciphertext search system, method and device and a medium, and relates to the technical field of block chains, and the system comprises a user, a key storage side, an encryption server side, a ciphertext storage side and a data search side; the key storage end is used for hosting and storing a key used by the encryption service provider for encrypting the user data; the encryption server side obtains the key of the key storage side in the TEE; the user encrypts own data through the encryption server and hosts the data to a ciphertext storage party; the ciphertext storage party is used for hosting the encrypted data of the user and providing a ciphertext search service for the data search end; and the data search end is used for obtaining related information by searching the keyword through the encryption server. According to the method and the device, the search service capability can be provided on the premise of privacy protection. 本发明提供一种多方协作的密文搜索系统、方法、设备及介质，