Data commit

Task/Substitution-cipher/Python/substitution-cipher-1.py

@@ -0,0 +1,19 @@
+from string import printable
+import random
+
+EXAMPLE_KEY = ''.join(sorted(printable, key=lambda _:random.random()))
+
+def encode(plaintext, key):
+    return ''.join(key[printable.index(char)] for char in plaintext)
+
+def decode(plaintext, key):
+    return ''.join(printable[key.index(char)] for char in plaintext)
+
+original = "A simple example."
+encoded = encode(original, EXAMPLE_KEY)
+decoded = decode(encoded, EXAMPLE_KEY)
+print("""The original is: {}
+Encoding it with the key: {}
+Gives: {}
+Decoding it by the same key gives: {}""".format(
+    original, EXAMPLE_KEY, encoded, decoded))

Task/Substitution-cipher/Python/substitution-cipher-2.py

@@ -0,0 +1,7 @@
+The original is: A simple example.
+Encoding it with the key: dV1>r7:TLlJa<EFBFBD>uY o]MjH\hI^X	cPN#!fmv[
+<e=04|O'~{y$bAq@}U.WtF*)x/K?
+Q%S(<EFBFBD>RB;25&s6Z9C3+D-_8kn,`Egiwzp"G
+Gives:
+iPMhX\YiYmJhX\Y5
+Decoding it by the same key gives: A simple example.