• Journal of Digital Convergence
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• v.12 no.10
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• pp.299-308
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• 2014

Today, a number of users using smartphone is very rapidly increasing by development of smartphone performance and providing various services. Also, they are using it for enjoying various services(cloud service, game, banking service, mobile office, etc.). today's mobile security solution is simply to detect malicious code or stay on the level of mobile device management. In particular, the services which use sensitive information, such as certificate, corporation document, personal credit card number, need the technology which are prevented from hacking and leaking it. Recently, interest of these mobile security problems are increasing, as the damage cases been occurred. To solve the problem, there is various security research such as mobile virtualization, ARM trustzone, GlobalPlatform for mobile device. Therefore, in this paper, I suggested efficient method that uses the mobile virtualization techniques of certification, security policy and access control, password/key management, safe storage, etc. and Trustzone of ARM for preventing information leakage and hacking.

• Smart Media Journal
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• v.8 no.4
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• pp.17-24
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• 2019

As IoT technology is widely used in industrial environments, its environmental security issues are becoming more important. In such a context, studies utilizing hardware security functions are being actively carried out. However, previous studies did not consider the performance degradation that occurs when using hardware security functions in IoT environment. Gateway devices that are mainly used in IoT environments are often resource-limited. Utilizing hardware security in such an environment can cause serious performance degradation as the number of IoT devices connected to the gateway increases. Therefore, in this paper, we propose a data classification scheme to efficiently utilize hardware security functions in resource limited environment. We implement a platform with the proposed technique using ARM Trustzone. Performance degradation due to the hardware security functions is measured through experiments on the implemented platform and compared with the performance as of when the proposed technique is applied.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.405-408
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• 2014

유무선 인터넷이 보편화되고 이용이 확산되면서 금융권에서는 고객의 편의성 증진을 위해 영업점의 상당한 업무를 인터넷뱅킹과 모바일뱅킹 등을 이용하여 처리할 수 있는 IT환경을 제공하고 있다. 이러한 Endpoint 환경의 변화는 점점 더 지능화되고 있는 사이버 공격 기술로 보안 위협이 증대되고 있는 실정이다. 이를 해결하기 위한 방법 중의 하나로 본 연구에서는 Reverse sandboxing 기술과 화이트리스트 기반의 보안 기술이 내장된 커널 수준의 TSX(Trusted Security Extension)기술을 통하여 맬웨어가 감염된 상태에서도 안전하게 전자금융거래를 할 수 있는 Endpoint 환경을 제공한다.