+def compare_binfiles(f1, f2):
+ h1 = md5()
+ h1.update(open(f1, 'rb').read())
+ h2 = md5()
+ h2.update(open(f2, 'rb').read())
+ if h1.digest() == h2.digest():
+ result = None
+ else:
+ result = ["Binary output does not match."]
+
+ return result
+
+