diff --git a/hmac_sha512.py b/hmac_sha512.py
new file mode 100644
index 0000000..d45c510
--- /dev/null
+++ b/hmac_sha512.py
@@ -0,0 +1,10 @@
+import sys
+import hashlib
+import hmac
+
+key = sys.argv[1]
+message = sys.argv[2]
+
+result = hmac.new(key, digestmod=hashlib.sha512)
+result.update(message)
+print result.hexdigest()