Abstract
64-비트 블록 암호 Piccolo-128은 무선 센서 네트워크 환경과 같이 제한된 환경에 적합하도록 설계된 경량 블록 암호이다. 본 논문에서는 Piccolo-128에 대한 biclique 공격을 제안한다. 본 논문에서 제안하는 공격은 <TEX>$2^{24}$</TEX>개의 선택 평문과 약 <TEX>$2^{127.35}$</TEX>의 계산 복잡도를 이용하여 Piccolo-128의 비밀키를 복구한다. 본 논문의 공격 결과는 Piccolo-128의 전체 라운드에 대한 첫 번째 이론적인 분석 결과이다. Piccolo-128 is a 64-bit ultra-light block cipher suitable for the constrained environments such as wireless sensor network environments. In this paper, we propose biclique cryptanalysis on the full Piccolo-128. To recover the secret key of Piccolo-128, the proposed attack requires <TEX>$2^{24}$</TEX> chosen plaintexts and the computational complexity of about <TEX>$2^{127.35}$</TEX>. This result is the first known theoretical attack result on the full Piccolo-128.
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