substitution1

substitution1/message.txt

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+ZWDg (gejfw djf zacwpfx wex dqar) afx a wscx jd zjicpwxf gxzpfbws zjicxwbwbjv. Zjvwxgwavwg afx cfxgxvwxm hbwe a gxw jd zeaqqxvrxg hebze wxgw wexbf zfxawbybws, wxzevbzaq (avm rjjrqbvr) gnbqqg, avm cfjtqxi-gjqybvr atbqbws. Zeaqqxvrxg pgpaqqs zjyxf a vpitxf jd zawxrjfbxg, avm hexv gjqyxm, xaze sbxqmg a gwfbvr (zaqqxm a dqar) hebze bg gptibwwxm wj av jvqbvx gzjfbvr gxfybzx. ZWDg afx a rfxaw has wj qxafv a hbmx affas jd zjicpwxf gxzpfbws gnbqqg bv a gadx, qxraq xvybfjvixvw, avm afx ejgwxm avm cqasxm ts iavs gxzpfbws rfjpcg afjpvm wex hjfqm djf dpv avm cfazwbzx. Djf webg cfjtqxi, wex dqar bg: cbzjZWD{DF3LP3VZS_4774ZN5_4F3_Z001_4871X6DT}

substitution1/sol.py

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+#!/home/maxime/.pyvenv/bin/python3
+
+D = {
+    'c': 'p', 'C': 'P',
+    'b': 'i', 'B': 'I',
+    'z': 'c', 'Z': 'C',
+    'j': 'o', 'J': 'O',
+    'w': 't', 'W': 'T',
+    'd': 'f', 'D': 'F',
+    'g': 's', 'G': 'S',
+    'v': 'n', 'V': 'N',
+    'm': 'd', 'M': 'D',
+    'x': 'e', 'X': 'E',
+    'f': 'r', 'F': 'R',
+    'i': 'm', 'I': 'M',
+    'p': 'u', 'P': 'U',
+    's': 'y', 'S': 'Y',
+    'q': 'l', 'Q': 'L',
+    'r': 'g', 'R': 'G',
+    'e': 'h', 'E': 'H',
+    'h': 'w', 'H': 'W',
+    'y': 'v', 'Y': 'V',
+    'n': 'k', 'N': 'K',
+    't': 'b', 'T': 'B',
+    'a': 'a', 'A': 'A',
+
+    'o': 'o', 'O': 'O',
+    'u': 'u', 'U': 'U',
+
+    'k': 'k', 'K': 'K',
+    'l': 'q', 'L': 'Q',
+}
+
+for i in range(26):
+    if chr(ord('a') + i) not in D:
+        print(chr(ord('a') + i))
+
+print()
+
+with open("message.txt", 'r') as f:
+    for char in f.read():
+        if char in D:
+            print(D[char], end='')
+        else:
+            print(char, end = '')
+
+print()
+