1 files changed, 20 insertions, 0 deletions
diff --git a/users/wpcarro/scratch/cryptopals/set1/c2.py b/users/wpcarro/scratch/cryptopals/set1/c2.py
new file mode 100644
index 0000000000..badd60503d
--- /dev/null
+++ b/users/wpcarro/scratch/cryptopals/set1/c2.py
@@ -0,0 +1,20 @@
+def fixed_xor(x, y, decode_hex=True, encode_hex=True):
+    if decode_hex:
+        x = bytearray.fromhex(x)
+        y = bytearray.fromhex(y)
+
+    result = bytearray(len(x))
+
+    for i in range(len(x)):
+        result[i] = x[i] ^ y[i]
+
+    return result.hex() if encode_hex else result
+
+run_tests = False
+if run_tests:
+    actual = fixed_xor("1c0111001f010100061a024b53535009181c", "686974207468652062756c6c277320657965")
+    expect = "746865206b696420646f6e277420706c6179"
+
+    print(actual)
+    assert actual == expect
+    print("Success!")