METHOD AND DEVICE FOR SAFETY PROTECTION
Patent Information
- Application Number
- DE602018080626
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2017-11-17
- Filing Date
- 2018-10-31
- Publication Date
- 2025-03-26
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In 5G systems, the use of multiple NAS connection links between terminals and AMF nodes via both 3GPP and non-3GPP access technologies leads to security vulnerabilities, particularly replay attacks due to inconsistent NAS COUNTs, compromising data security.
Implementing a security protection method where terminals and core network devices maintain separate NAS COUNTs for each access technology, using a first parameter to indicate the access technology during encryption and decryption processes, ensuring distinct security protection results even with shared NAS keys, thereby preventing replay attacks.
This approach enhances security protection for multiple NAS connection links by ensuring consistent security outcomes across different access technologies, reducing the likelihood of replay attacks and maintaining data integrity.