Added chall and some stuff

challs/cryptoMedium/chall1.py

@@ -0,0 +1,21 @@
+from aes import AES
+from secret import flag
+import os
+
+cipher = AES(flag, rounds = 1)
+
+p = []
+c = []
+
+for _ in range(2):
+    plaintext = os.urandom(16)
+    p.append(plaintext.hex())
+    ciphertext = cipher.encrypt_block(plaintext)
+    c.append(ciphertext.hex())
+
+print('plaintexts = ', p)
+print('ciphertexts = ', c)
+
+
+# plaintexts =  ['ae976f8d95e5bd2eaf40a0efcec97e0d', 'e99c923581939d80e1cf25ee19c891e4']
+# ciphertexts =  ['ce3776b4dc0551217e856bdfb25251b3', '70439bebea8c21e2b8eb7bad1723656b']