CRYPTOGRAPHIC TECHNIQUES IN WIRELESS COMMUNICATION NETWORKS

Abstract: systems and methods are disclosed for enhancing cryptographic security in 5g networks by addressing key management, algorithm selection, and security context consistency. one method ensures uniform cryptographic key lengths during access and mobility function (amf) changes, maintaining consistent non-access stratum (nas) security contexts across transitions. another method focuses on dual connectivity scenarios, ensuring uniform cryptographic key lengths across master node and secondary node communications by defining a unified cryptographic profile and enhancing capability signaling. additionally, an entropy-based approach to cryptographic algorithm selection is introduced, incorporating entropy assessment into the capability signaling process. this ensures that selected cryptographic algorithms for access stratum (as) and nas layers align with the actual entropy of long-term keys, providing true security levels.

Inventor(s): Abhijeet Ashok Kolekar

CPC Classification: H04W12/043 (using a trusted network node as an anchor)

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