한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제15권1호
  • /
  • Pages.46-56
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  • 2012
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  • 1598-9127(pISSN)
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  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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개인키 업데이트가 가능한 공개키 기반 공모자 추적 암호 알고리즘

A Public Key Traitor Tracing Scheme with Key-update Method

  • 투고 : 2011.11.01
  • 심사 : 2012.01.27
  • 발행 : 2012.02.05
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초록

Traitor Tracing schemes are broadcast encryption systems where at least one of the traitors who were implicated in the construction of a pirate decoder can be traced. This traceability is required in various contents delivery system like satellite broadcast, DMB, pay-TV, DVD and so on. In this paper, we propose a public key traitor tracing scheme with key-update method. If the system manager can update a secret key which is stored in an authorized decode, it makes a pirate decoder useless by updating a secret key A pirate decoder which cannot update a secret key does not decrypt contents in next session or during tracing a traitor, this scheme has merits which will make a pirate decoder useless, therefore this scheme raises the security to a higher level.

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참고문헌

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