[SuNiNaTaS] Forensic 26

문제를 보면 Frequnecy analysis 라고 쓰여있고, 뜻은 빈도 분석이다.

빈도 분석이란 암호 해독법의 일종으로 평문과 암호문에 사용되는 문자나 문자열의 빈도를 단서로 이용하는 암호 해독법이다.

밑에 있는 문자열을 을 해독하라는 것 같다.

빈도 분석하는 툴이 있는 사이트 https://quipqiup.com/ 에서 해독하면

kim yuna is a south korean figure skater she is the olympic champion in ladies singles the world champion the four continents champion a three time grand prix final champion the world junior champion the junior grand prix final champion and a four time south korean national champion kim is the first south korean figure skater to win a medal at an isu junior or senior grand prix event is u championship and the olympic games she is the first female skater to win the olympic games the world championships the four continents championships and the grand prix finals he is one of the most highly recognized athletes and media figures in south korea as of april this years he is ranked second in the world by the international skating union she is the current record holder for ladies in the short program the free skating and the combined total under the isu judging systems he is also the first female skater to surpass the two hud read point mark under the isu judging systems he has never been placed off the podium in her entire career

이런 값을 얻을 수 있다.

따라서 key 값은 kimyuna 이다.