Unfinished encryption lab answers.

caesar_cracker.py

@@ -0,0 +1,8 @@
+from collections import Counter
+from easybits import Bits
+
+def crack_caesar(ciphertext):
+    counts = Counter(ciphertext)
+    most_common_char, _ = counts.most_common(1)[0]
+    shift = Bits(most_common_char).int - Bits(' ').int
+    return shift