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[3.12] gh-109396: Fix test_socket.test_hmac_sha1() in FIPS mode (GH-109423) #109426

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Sep 14, 2023
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[3.12] gh-109396: Fix test_socket.test_hmac_sha1() in FIPS mode (GH-109423) #109426

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10 changes: 7 additions & 3 deletions Lib/test/test_socket.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6474,12 +6474,16 @@ def test_sha256(self):
self.assertEqual(op.recv(512), expected)

def test_hmac_sha1(self):
expected = bytes.fromhex("effcdf6ae5eb2fa2d27416d5f184df9c259a7c79")
# gh-109396: In FIPS mode, Linux 6.5 requires a key
# of at least 112 bits. Use a key of 152 bits.
key = b"Python loves AF_ALG"
data = b"what do ya want for nothing?"
expected = bytes.fromhex("193dbb43c6297b47ea6277ec0ce67119a3f3aa66")
with self.create_alg('hash', 'hmac(sha1)') as algo:
algo.setsockopt(socket.SOL_ALG, socket.ALG_SET_KEY, b"Jefe")
algo.setsockopt(socket.SOL_ALG, socket.ALG_SET_KEY, key)
op, _ = algo.accept()
with op:
op.sendall(b"what do ya want for nothing?")
op.sendall(data)
self.assertEqual(op.recv(512), expected)

# Although it should work with 3.19 and newer the test blocks on
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Tests/2023-09-14-22-58-47.gh-issue-109396.J1a4jR.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Fix ``test_socket.test_hmac_sha1()`` in FIPS mode. Use a longer key: FIPS
mode requires at least of at least 112 bits. The previous key was only 32
bits. Patch by Victor Stinner.