Patent ID: 9654472
Date: 2017-05-16
CPC Classifications: G06F,H04L

Claim:
1. A storage count verification system that verifies whether both a user device and a server device hold identical data or not when data to be searched in the server device is searched using search data requested from the user device, wherein the server device comprises: a server generator that generates a public parameter for searching the data to be searched; and a server communication unit that transmits the generated public parameter to the user device; a key generator that generates a secret key related to the data to be searched; and a server encryption unit that re-encrypts the respective encrypted search data on the basis of the secret key, wherein the user device comprises: a user generator that generates a secret parameter related to the search data and corresponding to the public parameter on the basis of the public parameter received from the server device; a user encryption unit that encrypts the search data on the basis of the generated secret parameter; and a user communication unit that transmits the encrypted search data to the server device or receives the re-encrypted search data from the server device.