인터넷의 급속한 발전은 사용자들의 정보 욕구를 증대시고 있으며, 이로 인해 정보의 홍수라 불리울 만큼 많은 정보들이 생성되고 사용되고 있다. 특히, 이윤을 추구하는 기업에서는 독자적인 기술력 확보를 위해 다양한 연구들을 수행하고 있다. 그러나 불법적인 외부 사용자 혹은 내부 사용자에 의한 정보의 불법적 유출로 인한 피해가 사회적 문제로 대두되고 있다. 따라서 본 논문에서는 내부 사용자에 의한 불법 데이터 유출 방지를 위한 안전한 지식 관리 시스템에 대해 제안하고자 한다. 제안된 방식은 내부 사용자들에 대한 명시적 인증을 수행하고 이를 기반해 데이터를 제공하고 2MAC을 이용해 악의적인 내부 사용자에 의한 불법적 데이터 유출을 방지하는 안전한 지식 관리 시스템이다.
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