https://www.syu.ac.kr/grad/2020-%ec%a0%9c16%ed%9a%8c-kmac-%ea%b2%bd%ec%98%81%ed%98%81%ec%8b%a0-%ec%97%b0%ea%b5%ac%eb%85%bc%eb%ac%b8-%eb%b0%8f-%ec%82%ac%eb%a1%80%ec%97%b0%ea%b5%ac-%eb%8c%80%ed%95%99%ec%9b%90%ec%83%9d-%ea%b3%b5/kmac/