diff --git a/crypto/tmp b/crypto/tmp
new file mode 100644
index 0000000..5274a9d
Binary files /dev/null and b/crypto/tmp differ
diff --git a/crypto/xor_dec.py b/crypto/xor_dec.py
new file mode 100644
index 0000000..d80c501
--- /dev/null
+++ b/crypto/xor_dec.py
@@ -0,0 +1,21 @@
+import sys
+
+key_len = int(sys.argv[2])
+def xor_str(str1, str2, length):
+	#print str1, str2, length
+	output = ''
+	for i in range(length):
+		output += chr(ord(str1[i]) ^ ord(str2[i]))
+	return output
+
+with open(sys.argv[1]) as f:
+	buf = f.read()
+
+output = ''
+for i in range(0, len(buf), key_len):
+	#print i
+	str1 = buf[i: i + key_len]
+	str2 = buf[i + key_len: i + key_len * 2]
+	output += xor_str(str1, str2, min(len(str1), len(str2)))
+print output
+
diff --git a/crypto/xor_enc.py b/crypto/xor_enc.py
new file mode 100644
index 0000000..14c8a0f
--- /dev/null
+++ b/crypto/xor_enc.py
@@ -0,0 +1,14 @@
+import sys
+
+crypto = sys.argv[2]
+with open(sys.argv[1]) as f:
+	buf = f.read()
+
+output = ''
+i = 0
+for c in buf:
+	output += chr(ord(c) ^ ord(crypto[i % len(crypto)]))
+	i += 1
+
+sys.stdout.write(output)
+