I need a UUID. Your job is to generate one.
The canonical UUID (Universally Unique IDentifier) is a 32 digit hexadecimal number with hyphens inserted in certain points.The program should output 32 hex digits (128 bits), in the form of
8-4-4-4-12 digits), where
x is a random hexadecimal number. Assuming that your language's PRNG is perfect, all valid outputs must have the same probability of being generated.
Generate 32 random hexadecimal digits in the form
8-4-4-4-12 digits. Shortest code wins.
EDIT: Must be hexadecimal. Always generating decimal only is invalid. EDIT 2: No built-ins. These aren't GUIDs, just generic hex digits.
ab13901d-5e93-1c7d-49c7-f1d67ef09198 7f7314ca-3504-3860-236b-cface7891277 dbf88932-70c7-9ae7-b9a4-f3df1740fc9c c3f5e449-6d8c-afe3-acc9-47ef50e7e7ae e9a77b51-6e20-79bd-3ee9-1566a95d9ef7 7b10e43c-3c57-48ed-a72a-f2b838d8374b
Input, and standard loopholes are disallowed.
This is code-golf, so shortest code wins. Also, feel free to ask for clarifications.