블록체인 기술은 P2P 네트워크를 이용하여 거래내역을 분산.저장함으로써 서버 설치 및 운영에 따르는 전산비용을 낮추면서도 보안을 강화할 수 있는 이상적인 기술이다. 기존 클라이언트-서버 구조에서는 서비스를 제공하기 위해 서버를 설치.운영하여 사용자가 늘어날수록 서버 및 네트워크 용량을 늘려야 하기 때문에 확장성에 따른 비용 증가의 문제가 있다. 블록체인을 이용한 분산 네트워크 구조에서는 이러한 문제가 발생하지 않는다는 것이 가장 큰 장점으로 부각되고 있다. 본 고에서는 블록체인 기술의 개념을 정리하고, 기술의 동향과 흐름을 파악하여 향후 다양한 적용 분야 중 특히 보안 분야에 적용이 가능하다는 것을 시사점으로 도출하였다.
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