Shenzhen University Assigned Patent

Shenzhen University, Shenzhen, China, has been assigned a patent (10,769,107) developed by Li, Jianqiang, Zhang, Min, Li, Sailing, and Ming, Zhong, Guangdong, China, for “file storage method, file search method and file storage system based on public-key encryption with keyword search.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”The invention provides a file storage method, a file search method and a file storage system based on public-key encryption with keyword search. The method comprises: receiving a user file storage request sent from a data possessor, acquiring access control attribute information for access to a user file, security level parameters and a keyword set of the user file, generating a file attribute vector of the user file by means of the access control attribute information and the keyword set, acquiring a public-secret key pair used for encrypting the file attribute vector from a pre-generated key space, encrypting the file attribute vector by means of a public key in the public-secret key pair to obtain a ciphertext corresponding to the file attribute vector, and transmitting the ciphertext corresponding to the file attribute vector and a ciphertext of the user file to a preset storage server.”

The patent application was filed on October 16, 2018 (16/162,353).