The KIPS Transactions:PartC (정보처리학회논문지C)

Korea Information Processing Society (한국정보처리학회)
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Distributed Secure Mail System For Roaming User

이동 사용자를 위한 분산 보안 메일 시스템

  • 양종필 (부경대학교 대학원 전자계산학과) ;
  • 서철 (부경대학교 대학원 전자계산학과) ;
  • 이경현 (부경대학교 전자컴퓨터멀티미디어공학부)
  • Published : 2003.10.01
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Abstract

In this paper, we propose a new certified e-mail system which reduces user's computational overhead and distributes confidentiality of TTP(Trusted Third Partty). Based on the traditional cryptographic schemes and server-supported signiture for fairness and confidentiality of message, we intend to minimize to computation overhead of mobile device on public key algorithm. Therefore, our proposal becomes to be suitable for mail user sho uses mobile devices such as cellular phone and PDA. Moreover, the proposed system is fault-tolerant, secure against mobile adversary and conspiracy attack, since it is based on the threshold cryptography on server-side.

본 논문에서는 매일 사용자의 오버헤드를 최소화하고 TTP(Trusted Third Party)의 기밀성을 분산시킨 새로운 Certified E-mail System을 제안한다. 제안 시스템은 전달 메시지의 공정성 및 기밀성 보장을 위하여 전통적인 암호기법과 함께 서버 지원된 서명 기법을 사용함으로써, 매일 사용자의 공개키 암호 알고리즘 연산에 따른 오버해드를 최소화하는 구조를 가진다. 따라서, 제안 방안은 셀룰러 폰이나 무선 PDA와 같은 컴퓨팅 파워가 취약한 이동 장치를 이용하는 매일 사용자에 적합하다. 또한, 제안된 시스템은 임계 암호시스쳄에 기반하여 설계되었으므로 이동 공격자에 대하여 강겅하며 공모 공격으로부터 안전하다.

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