Next-generation Convergence
Security Laboratory
Department of Mobile Convergence Engineering, Hanbat National University
Next-generation Convergence Security Lab (NCSL)
In the 21st century with information and telecommunication more important than ever before, the mobile network field is rapidly developing as the core of the information and telecommunication field. The importance of information security is being more emphasized, as we live in an information society with system development. Information security is a social and national issue rather than personal.
Under these circumstances, we have established Next-generation Convergence Security Laboratory (NCSL). "Next-generation Convergence Security Technology" includes Artificial Intelligence (AI) security, Internet of Things (IoT) security, Vehicle Ad-hoc Network (VANET) security, FinTech security, information security service technology for the mobile Internet, and authentication technology for the various network security systems. These are the core of the next-generation network security technology.
Next-generation Convergence Security Laboratory (NCSL) at Hanbat National University will do its best to improve the information security field in Korea, meet international standards, and enhance its competitive edge in the rapidly changing information and telecommunication society.
Core Research
- AI Security
- Post-Quantum Cryptography
- Blockchain Technology
- Vehicular Ad-hoc Networks Security
- Unmanned Vehicle Security
- Internet of Things Security
- FinTech Security
Member
I received the M.S. degree in electronics engineering and the Ph.D. degree in electronic and electrical engineering from Kyungpook National University, Daegu, South Korea, in 2019 and 2025, respectively. I am currently an assistant professor with Hanbat National University, Daejeon, Republic of Korea. My research interests include AI/ML security, authentication, blockchain, network security, post-quantum cryptography, and information security. Before joining academia, I was a researcher at Electronics and Telecommunications Research Institute, Daejeon, Republic of Korea.
주우현
⌂ Room 411, N5 Building
이효준
⌂ Room 411, N5 Building
김영준
⌂ Room 411, N5 Building
장민규
⌂ Room 411, N5 Building
We are looking for a new member!
My lab is always open to highly motivated, enthusiastic, and proactive graduate/undergraduate students. If you are interested in joining our member, please contact me with your CV or information.
Research
AI Security
Research in Artificial Intelligence (AI) aims to create a system capable of performing tasks that require human-level intelligence. AI learns from data to provide intelligent automation and predictive analysis across various fields. However, AI models can leak sensitive data of users, and can be induced to make wrong predictions by malicious adversaries. We study privacy-preserving model learning techniques, data management, model protection, and mutual authentication for AI systems.
Post-Quantum Cryptography
The quantum computer will break today's public-key cryptosystems such as RSA and ECC using Shor and Grover algorithm. A post-quantum cryptosystem is a secure cryptosystem even if an attacker has a large quantum computer and tries to attack the system. Today, several post-quantum cryptosystems have been proposed for preventing quantum computing attacks, including hash-based and lattice-based cryptosystems. We study the post-quantum cryptosystem for improving security and efficiency.
Blockchain Technology
A blockchain is a decentralized ledger of all transaction across a P2P (Peer to Peer) network. The innovation of this technology is that participants transfer assets or data through the internet without the need for a trusted third party. This mechanism of blockchain can be applicable for financial services, voting, cloud service, healthcare, automotive energy management and many other fields. We study the security system and cryptographic techniques using the blockchain.
Vehicular Ad-hoc Networks Security
Vehicular Ad-Hoc Networks (VANETs) are distributed, self-organized networks built up by many high-speed vehicles. All vehicles in the network would install onboard units (OBU), which would integrate the vehicles' wireless communications, micro-sensors, embedded systems, and Global Positioning System (GPS). These smart vehicles could then communicate with each other as well as with roadside units (RSU), such as traffic lights or traffic signs, which would then improve the driving experience and make driving safer. Despite these advantages, VANETs come with their own set of challenges, particularly in the aspects of security and privacy. Lack of authenticated information shared in the network may lead to malicious attacks and service abuses, which could pose great threats to drivers. We study authentication and key distribution between vehicles and RSUs.
Unmanned Vehicle Security
An unmanned vehicle is a mobile vehicle that operates autonomously, which does not have an operator on board. With its own computing system, unmanned vehicle interacts with external environments and performs its services, including delivery, relief, and exploration. However, an attacker can pose a threat to the network by collecting sensitive information through the data from these wireless channels. We study the data integrity, confidentiality, and mutual authentication suitable for unmanned vehicle environments.
Internet of Things Security
The concept of Internet of Things (IoT) is that every object in the Internet infrastructure is interconnected into a global dynamic expanding network. Sensors and smart objects are classical computing devices key parties of the IoT. The computing performance of those devices is comparatively low, hence, it is hard to apply traditional cryptographic technologies. We study user authentication and key management suitable for IoT environments.
FinTech Security
FinTech (Financial Technology) is defined as the technique to create efficient financial services using IT technologies. FinTech is an innovative technology through IT platform and big data, and is expected to improve the security and solve problems of the conventional banking system. Financial institutions have introduced technologies and invested to provide safe and effective services to users, such as Samsung Pay and Apple Pay. However, in the financial environment, information disclosure and security incidents have occurred, so they have lost the trust of their customers. Moreover, new variants of the security threats and attack techniques have occurred. We study user identification, non-repudiation, integrity, and confidentiality of data for secure user authentication.
Publications
국제 저명 학술지(SCIE) 및 국내외 학술대회에 발표된 연구 성과입니다. (교신저자 *)
International Journals (SCIE) 35 papers
International Conferences 4 papers
Domestic Journals 2 papers
Domestic Conferences 5 papers
Lab News
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2025년 국가연구개발 우수성과 100선에 선정되었습니다.
Contact Us
Contact Information
- PROFESSOR OFFICE[N5]-315, Hanbat National University
- STUDENT OFFICERoom 411, N5 Building, Hanbat National University
- ADDRESS125, Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
- PHONE(042) 821-1212
- E-MAILsj.yu@hanbat.ac.kr
Join NCSL ✉️
If you are interested in our lab, please contact prof. Sungjin Yu with your information or CV (sj.yu@hanbat.ac.kr).
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