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DLL 를 이용한 웹페이지 에서의 XSS 대응에 대한 웹 서버 성능 향상 방안
이래홍 ( Nae-hong Lee ),이희조 ( Heejo Lee ) 한국정보처리학회 2007 한국정보처리학회 학술대회논문집 Vol.14 No.2
웹 서비스를 기반으로 구축된 IT 환경에서 Dynamic Web page 를 동작하도록 하는 것이 CGI(Common Gateway Interface)이다. 이런 CGI 를 사용하는 Web page 에서는 XSS(Cross Site Scripting)에 취약점을 가지고 있다. XSS 의 취약점을 이용하여 Web page 의 변조, Cookie 의 가로채기 등의 악의적인 행동으로 인해 많은 피해사례가 있다. 기존의 연구들은 이러한 문제를 해결하기 위해서 게시판 입력 값을 체크하여 Meta character 를 필터링 하는 방법으로 XSS 공격을 대응하였다. 그러나 이러한 방법은 각 페이지 마다 필터링 스크립트를 사용하기 때문에 웹 서버의 성능에 많은 부하를 초래 하는 단점이 있었다. 따라서 본 논문에서는 이러한 웹 서버의 부하를 줄이기 위해 필터링 스크립트를 DLL(Dynamic link library) 화 시켜 모듈화된 함수를 각 페이지에서 호출하여 사용함으로써 웹 서버의 성능 향상을 제안 한다.
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嚴東玉,李來洪,宣中基,都京三 又石大學校 1995 論文集 Vol.17 No.-
This study was undertaken to develope a method for the determination of aconitine alkaloids from Aconitum ciliare Tuber by spectrophotometry. The complex of cobalt(Ⅱ)ion and thiocyanate ion forms tetrathiocyanatocobaltate(Ⅱ)ion in aqueous solution containing an excess of thiocyanate ion. The tetrathiocyanatocobaltate(Ⅱ)ion produces the complex with aconitine alkaloids. The complex are extracted from aqueous solution to 1. 2-dichlorethane. A spectrophotometry for determination of aconitine alkaloids with tetrathiocyanatocobaltate(Ⅱ)ion were, established by 1, 2-dichlorethane extraction. Determination of aconitine standard was possible to the rage of 0.4-0.6㎎/㎖ in 1.2-dichlorethane. To examine the determination of aconitine alkaloids in Aconitum ciliare Tuber were determined by using acid-alkali titration, spectrophotometry from ether extracts. The average recovery of aconitine standard sloution was 97.9% and standard deviation 2.97%. As this method is accurate and precise, is applicable to the determination of aconitine alkaloids in Aconitum ciliare Tuber.
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嚴東玉,金基德,李來洪,梁在憲,申台容 우석대학교 의약품개발연구소 1996 藥學硏究誌 Vol.1 No.-
A new application of specrophotometry for the isolation and determination of tertiary base in Corydalis Tuber was investigated. In order to establish the method for isolation and determination of tertiary base in the Corydalis Tuber. Tertiary base was isolated from Corydalis Tuber by organic solvent. When tertiary base was added to a solution containing cobaltous ion and excess thiocyan ion, yellowish-green, 1,2-dichloroethane-solube(base)_2Co(SCN)_4 precipitate. Supportive evidence for identification could be obtained by complexation with tetrathiocyanatocobaltate(Ⅱ) ion. The ultraviolet-visible spectrum of complex vompound in 1,2-dichloroethane exhibits maxima at 282nm and 624nm. The tertiary base was isolated from compex compound and identified as glaucine by UV-Visible spectrum and TLC. A tertiary base in 1,2-dichloroethane scanned from 200nm to 400nm qualitatively exhibits the same absorbance characteristics at identical wavelength as does isolated and concomitantly measured solution of a complex compound. The tertiary base components present in comples compound have been resolved on an absorbance solvent. And it is studied that the differential determination of tertiary base in Corydalis Tuber by spectrophometry. The tertiary base is determined by absorbance of colored products that is produced to reaction of tetrathiocyanatocobaltate(Ⅱ) ion under determination of tertiary base was possible to the range of glaucine 0.100mg/ml-1.000mg/ml in 1,2-dichloroethane. (maximum wavelength; 624nm) The calibration curve showed that the coefficient of variation was 0.9999% for glaucine. Also reproducibility tests showed that the coefficient of variation was 0.9999%. Arepid, specific and precise method using UV-Visible spectrophotometry and TLC has been developed for the isolation and determination of tertiary base in the Corydalis Tuber. The method was applicable to the isolation and determination of tertiary base in Corydalis Tuber or it's extract.
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