all tasks

Task/Vigen-re-cipher/Python/vigen-re-cipher-1.py

@@ -0,0 +1,19 @@
+from itertools import starmap, cycle
+
+def encrypt(message, key):
+
+    # convert to uppercase.
+    # strip out non-alpha characters.
+    message = filter(lambda _: _.isalpha(), message.upper())
+
+    # single letter encrpytion.
+    def enc(c,k): return chr(((ord(k) + ord(c)) % 26) + ord('A'))
+
+    return "".join(starmap(enc, zip(message, cycle(key))))
+
+def decrpyt(message, key):
+
+    # single letter decryption.
+    def dec(c,k): return chr(((ord(c) - ord(k)) % 26) + ord('A'))
+
+    return "".join(starmap(dec, zip(message, cycle(key))))

Task/Vigen-re-cipher/Python/vigen-re-cipher-2.py

@@ -0,0 +1,9 @@
+text = "Beware the Jabberwock, my son! The jaws that bite, the claws that catch!"
+key = "VIGENERECIPHER"
+
+encr = encrypt(text, key)
+decr = decrpyt(encr, key)
+
+print text
+print encr
+print decr