公开(公告)号：US10769107B2

公开(公告)日：2020-09-08

申请号：US16162353

申请日：2018-10-16

申请人： SHENZHEN UNIVERSITY

发明人： Jianqiang Li ,  Min Zhang ,  Sailing Li ,  Zhong Ming

IPC分类号： G06F21/62 ,  G06F16/14 ,  H04L9/08 ,  H04L29/08 ,  H04L9/06 ,  H04L9/30

摘要： 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.

公开(公告)号：US20190050398A1

公开(公告)日：2019-02-14

申请号：US16162353

申请日：2018-10-16

申请人： SHENZHEN UNIVERSITY

发明人： Jianqiang Li ,  Min Zhang ,  Sailing Li ,  Zhong Ming

IPC分类号： G06F17/30 ,  G06F21/62 ,  H04L9/06 ,  H04L9/30

CPC分类号： G06F16/14 ,  G06F21/6209 ,  G06F21/6218 ,  H04L9/0618 ,  H04L9/0894 ,  H04L9/30 ,  H04L67/06

摘要： 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.