한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
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여원 MLCA와 특수 혼돈 함수를 이용한 영상 암호화 기법

Image Encryption Scheme using Complemented MLCA and Special Chaos Map

  • 정현수 (부경대학교 정보통신공학과) ;
  • 박규칠 (부경대학교 정보통신공학과) ;
  • 조성진 (부경대학교 응용수학과) ;
  • 김석태 (부경대학교 정보통신공학과)
  • 투고 : 2020.08.21
  • 심사 : 2020.10.15
  • 발행 : 2020.10.31
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초록

본 논문에서는 영상의 픽셀 고유의 값을 변환하고 위치를 섞는 높은 보안성을 지닌 암호화 알고리즘을 제안한다. Wolfram 규칙으로 생성된 상태 전이 행렬로 최대 길이를 가지는 여원 CA 수열을 만든다. 이를 2차원 기저 영상으로 변환하여 원 영상과 XOR 연산을 한 후, 층밀리기 변형 및 재배열 과정을 통하여 암호화된 영상을 만든다. 영상의 안정성 분석을 통하여 제안하는 암호화 기법이 높은 보안성을 가졌음을 검증한다.

The proposed encryption algorithm strengthens its security by converting pixel-specific values and changing pixel positions. The state transition matrix created by Wolfram's rule creates a complemented CA sequence with the maximum length. Then, we convert the sequence into a 2D basis image and go through a XOR operation with the original image. The final encrypted image is created by shear stressing and rearranging. The image stability analysis verified that the proposed encryption method has high security.

키워드

참고문헌

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