Kyu Cheol Oh

Title: Kyu Cheol Oh and His Patent in Mobile Multicast Key Management.

Introduction

Kyu Cheol Oh is an inventor associated with Seoul, South Korea, and the Korea Information Security Agency. His work includes an invention focused on secure communications and efficient key management for mobile networks.

Latest Patents

The provided information lists one patent for Oh: “Method of Managing a Mobile Multicast Key Using a Foreign Group Key.” The invention addresses secure communication between a mobile terminal and a secure relay server in areas where signals from multiple access points overlap.

The method enables multicast secure relay servers to perform delegated authentication in advance, helping reduce authentication delays for mobile terminals. It uses a primary group key and a foreign key to limit the effects of group-key changes as users move between coverage areas. This approach can reduce key-update overhead and delays, while centralizing key-management functions at the secure relay server to ease processing and bandwidth demands on mobile devices. Oh is credited with 1 patent in the information provided.

Career Highlights

Oh’s listed patent reflects work on mobile network security, particularly authentication and multicast key management in overlapping wireless coverage areas. The provided information identifies the Korea Information Security Agency as his company.

Collaborations

Mi Youn Yoon and Yoo Jae Won are identified as Oh’s coworkers. The available information does not specify their roles in the patent or whether they collaborated on it.

Conclusion

Kyu Cheol Oh’s listed invention aims to make secure mobile multicast communication more efficient by reducing authentication delays and key-update overhead while assigning key-management responsibilities to a secure relay server.