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단일 데이터패스 구조에 기반한 AES 암호화 및 복호화 엔진의 효율적인 통합설계
정찬복,문용호,Jeong, Chan-Bok,Moon, Yong-Ho 대한임베디드공학회 2012 대한임베디드공학회논문지 Vol.7 No.3
An integrated crypto engine for encryption and decryption of AES algorithm based on unified data-path architecture is efficiently designed and implemented in this paper. In order to unify the design of encryption and decryption, internal steps in single round is adjusted so as to operate with columns after row operation is completed and efficient method for a buffer is developed to simplify the Shift Rows operation. Also, only one S-box is used for both key expansion and crypto operation and Key-Box saving expended key is introduced provide the key required in encryption and decryption. The functional simulation based on ModelSim simulator shows that 164 clocks are required to process the data of 128bits in the proposed engine. In addition, the proposed engine is implemented with 6,801 gates by using Xilinx Synthesizer. This demonstrate that 40% gates savings is achieved in the proposed engine, compared to individual designs of encryption and decryption engine.
유산소·서킷 복합운동 프로그램이 비만 초등학생의 신체조성과 혈액성분 변화에 미치는 영향
정소봉(So Bong Jeong),정찬복(Chan Bok Jeong) 한국발육발달학회 2004 한국발육발달학회지 Vol.12 No.4
This study was conducted to analyze the effects of 12-week Aerobic?Circuit Exercise program on the physical and blood composition of obesity girl elementary school students. The body obesity of the students was over fat 30% and the Mixed Training program was made up of Aerobic Training and Circuit Training and this training program was conducted five times a week, HRmax 50~70% and 60±10min a day. The results are as following. 1. Physical composition changes after 12-week Aerobic?Circuit Exercise program showed decline increases of LBM 0.48㎎/㎗and it does not mean significant differences statistically(p<.05). However, after the experiment the declines of Weight 5.36kg, %Fat 3.18%, Fat 3.00kg mean significant differences(p<.05). 2. Blood composition changes after 12-week Aerobic?Circuit Exercise program showed increase of HDL-C 3.10㎎/ ㎗and it does not mean significant differences statistically(p<.05). However, after the experiment the declines of LDL-C 19.20㎎/㎗, TG 25.60㎎/㎗and T-C 22.60㎎/㎗mean significant differences(p<.05). The results above showed that Aerobic?Circuit Exercise program had effects on the physical and blood composition changes of obesity children. Therefore, this study needs to be developed into the synthetic, scientifical and exciting training program applying Aerobic?Weight?Circuit Training, psychotherapy, dietotherapy, behavioral modification therapy and etc as well as the Aerobic?Circuit Exercise program.