You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.6 KiB
42 lines
1.6 KiB
4 years ago
|
diff --git a/Lib/multiprocessing/connection.py b/Lib/multiprocessing/connection.py
|
||
|
|
--- a/Lib/multiprocessing/connection.py
|
||
|
|
+++ b/Lib/multiprocessing/connection.py
|
||
|
|
@@ -41,6 +41,10 @@
|
||
|
|
# A very generous timeout when it comes to local connections...
|
||
|
|
CONNECTION_TIMEOUT = 20.
|
||
|
|
|
||
|
|
+# The hmac module implicitly defaults to using MD5.
|
||
|
|
+# Support using a stronger algorithm for the challenge/response code:
|
||
|
|
+HMAC_DIGEST_NAME='sha256'
|
||
|
|
+
|
||
|
|
_mmap_counter = itertools.count()
|
||
|
|
|
||
|
|
default_family = 'AF_INET'
|
||
|
|
@@ -700,12 +704,16 @@
|
||
|
|
WELCOME = b'#WELCOME#'
|
||
|
|
FAILURE = b'#FAILURE#'
|
||
|
|
|
||
|
|
+def get_digestmod_for_hmac():
|
||
|
|
+ import hashlib
|
||
|
|
+ return getattr(hashlib, HMAC_DIGEST_NAME)
|
||
|
|
+
|
||
|
|
def deliver_challenge(connection, authkey):
|
||
|
|
import hmac
|
||
|
|
assert isinstance(authkey, bytes)
|
||
|
|
message = os.urandom(MESSAGE_LENGTH)
|
||
|
|
connection.send_bytes(CHALLENGE + message)
|
||
|
|
- digest = hmac.new(authkey, message).digest()
|
||
|
|
+ digest = hmac.new(authkey, message, get_digestmod_for_hmac()).digest()
|
||
|
|
response = connection.recv_bytes(256) # reject large message
|
||
|
|
if response == digest:
|
||
|
|
connection.send_bytes(WELCOME)
|
||
|
|
@@ -719,7 +727,7 @@
|
||
|
|
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).digest()
|
||
|
|
+ digest = hmac.new(authkey, message, get_digestmod_for_hmac()).digest()
|
||
|
|
connection.send_bytes(digest)
|
||
|
|
response = connection.recv_bytes(256) # reject large message
|
||
|
|
if response != WELCOME:
|