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gh-100755: Use SHA512 for multiprocessing HMAC digests #100772

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gh-100755: Use SHA512 for multiprocessing HMAC digests #100772

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4 changes: 2 additions & 2 deletions Lib/multiprocessing/connection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -803,7 +803,7 @@ def deliver_challenge(connection, authkey):
"Authkey must be bytes, not {0!s}".format(type(authkey)))
message = os.urandom(MESSAGE_LENGTH)
connection.send_bytes(CHALLENGE + message)
digest = hmac.new(authkey, message, 'md5').digest()
digest = hmac.new(authkey, message, 'sha512').digest()
response = connection.recv_bytes(256) # reject large message
if response == digest:
connection.send_bytes(WELCOME)
Expand All @@ -819,7 +819,7 @@ def answer_challenge(connection, authkey):
message = connection.recv_bytes(256) # reject large message
assert message[:len(CHALLENGE)] == CHALLENGE, 'message = %r' % message
message = message[len(CHALLENGE):]
digest = hmac.new(authkey, message, 'md5').digest()
digest = hmac.new(authkey, message, 'sha512').digest()
connection.send_bytes(digest)
response = connection.recv_bytes(256) # reject large message
if response != WELCOME:
Expand Down