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안전한 시스템을 위한 Buffer Overflow 대응기법분석에 관한 연구
조진호(Jin-Ho Jo),황현욱(Hyun-Uk Hwang),박종백(Jong-Baek Park) 한국정보과학회 2000 한국정보과학회 학술발표논문집 Vol.27 No.2Ⅰ
Buffer Overflow는 가장 핵심적인 해킹기법중의 하나이다. 현재 해킹피해의 대부분을 차지하며 local attack 뿐 아니라 remote attack까지 가능하므로 이를 이해함은 보안을 이해하는 차원에서 매우 중요하다. 본 논문에서는 Buffer Overflow의 원리와 최근 발생한 시스템의 해킹 형태를 살펴보고, 이를 방지할 수 있는 기법들을 분석하여 Buffer Overflow에 대응할 수 있는 모습을 그려보고자 한다.
이진영 ( Jin Young Lee ),이수연 ( Soo Yeon Lee ),전혜지 ( Hye Ji Jun ),윤지영 ( Ji Young Yoon ),황현욱 ( Hyun Uk Hwang ),박주훈 ( Joo Hoon Park ),안봉전 ( Bong Jeun An ),손준호 ( Jun Ho Son ),황주영 ( Ju Young Hwang ) 대한본초학회 2012 大韓本草學會誌 Vol.27 No.5
Objectives : Cosmeceutical activities such as anti-oxidative and anti-aging effects of the Doinseunguitang and its composition, a traditional prescription, were evaluated. Methods : We performed MTT assay, melanin synthesis inhibition assay, DPPH free radical scavenging assay, SOD-like activity, xanthine oxidase inhibition assay, astringent activity assay, tyrosinase inhibition assay, elastase and collagenase inhibition assay. Results : The results were obtained as follows : DPPH free radical scavenging of water extract Doinseunguitang (DISG) and ethanol extract DISG was 60% and 50% at 1,000 ppm. Xanthine oxidase inhibition effect of ethanol extract showed more than 80% at 500 ppm. Tyrosinase inhibition and inhibition melanin synthesis activities were measured in 40% and 50% at 1,000 ppm and 100 ppm. Elastase and collagenase inhibition rate of ethanol extracts DISG 40% and 80% at 1,000 ppm. It was concluded that compositive ingredients (Persicae Seman, Glycyrrhizae Radix, Cinnamomi Ramulus, Rhei Rhizoma) influenced the most results. Conclusions : The results indicated that, ethanol extract which is superior in its anti-oxidative and anti-aging effects is useful to be applied in herbal cosmetic industry.