[Cryptography] Classic Cipher -4
2020.01.11
특수문자 종류를 보면 알파벳 종류와 같기 때문에 아무 특수문자 하나를 알파벳으로 교체한 뒤, 도움 : https://quipqiup.com/ 위 사이트를 통해 플래그를 얻으면 된다. in cryptography, a substitution cipher is a method of encrypting by which units of plaintext are replaced with ciphertext, according to a fixed system; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth. the receiver de..