gh-94684: uuid: support bytes in the name argument to uuid3/5 (#94709)

RFC 4122 does not specify that name should be a string, so for completness the functions should also support a name given as a raw byte sequence.

1 files changed, 6 insertions, 2 deletions

diff --git a/Lib/uuid.py b/Lib/uuid.py
index 1c5578b..698be34 100644
--- a/Lib/uuid.py
+++ b/Lib/uuid.py
@@ -711,9 +711,11 @@ def uuid1(node=None, clock_seq=None):
 
 def uuid3(namespace, name):
     """Generate a UUID from the MD5 hash of a namespace UUID and a name."""
+    if isinstance(name, str):
+        name = bytes(name, "utf-8")
     from hashlib import md5
     digest = md5(
-        namespace.bytes + bytes(name, "utf-8"),
+        namespace.bytes + name,
         usedforsecurity=False
     ).digest()
     return UUID(bytes=digest[:16], version=3)
@@ -724,8 +726,10 @@ def uuid4():
 
 def uuid5(namespace, name):
     """Generate a UUID from the SHA-1 hash of a namespace UUID and a name."""
+    if isinstance(name, str):
+        name = bytes(name, "utf-8")
     from hashlib import sha1
-    hash = sha1(namespace.bytes + bytes(name, "utf-8")).digest()
+    hash = sha1(namespace.bytes + name).digest()
     return UUID(bytes=hash[:16], version=5)