抗量子多对多动态可搜索加密方法、系统及存储介质
By combining quantum-resistant public and private keys with lattice cryptographic public keys, an initial database and a set of encrypted tokens are generated, enabling many-to-many dynamic searchable encryption in a quantum environment. It supports keyword-level file operations and identity attribute authorization, solving the security and dynamic update efficiency problems of existing technologies under quantum threats. It is suitable for high-security cloud computing environments such as medical and health data sharing, vehicle networking, and financial cloud services.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 中电信量子信息科技集团有限公司
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing searchable encryption schemes rely on classical public-key cryptography for security, which is vulnerable to quantum computing threats, resulting in insufficient data security. Furthermore, they are limited in functionality and have low efficiency in dynamic updates in multi-agent scenarios.
It employs quantum-resistant public and private keys, lattice cryptographic public keys, and a preset access policy tree to generate a quantum-resistant many-to-many dynamic searchable encryption method. It generates an initial database and encryption token set through an attribute structure, supports keyword-level file addition and deletion, and implements fine-grained authorization control based on identity attributes. The reader generates an aggregated search token for consistency verification.
It achieves secure and reliable many-to-many dynamic searchable encryption in a quantum environment, supports flexible permission configuration and dynamic adjustment in multi-organization collaborative scenarios, simplifies retrieval logic, improves the system's practicality and deployment feasibility, and solves the problems of security deficiencies and low dynamic update efficiency of existing technologies under quantum threats.
Smart Images
Figure CN121077666B_ABST