Unfinished encryption lab answers.

.envrc

@@ -0,0 +1 @@
+source .venv/bin/activate

answers.md

@@ -4,19 +4,19 @@
 
 0. `secrets/secret0.txt` is encrypted using a Caesar Cipher. What is
    its secret number?
-
+78
 1. `secrets/secret1.txt` is encrypted using a Caesar Cipher. What is
    its secret number?
-
+1
 2. `secrets/secret2.txt` is encrypted using a Caesar Cipher. What is
    its secret number?
-
+44
 3. `secrets/secret3.txt` is encrypted using a Caesar Cipher. What is
    its secret number?
-
+59
 4. `secrets/secret4.txt` is encrypted using a Caesar Cipher. What is
    its secret number?
-
+32
 ## Checkpoint 2
 
 5. What is the polyalphabetic secret word?

caesar_cracker.py

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+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