gh-142451: correctly copy HMAC attributes in HMAC.copy()

[picnixz]

There was actually a much older issue in copy() were we didn't copy the block size. Considering no one has ever complained about this for the past 20 years, I think that no one is actually using copy() followed by .block_size somewhere... I will backport this as well to 3.13 and 3.14.

• Issue: HMAC.copy() does not correctly copy its attributes #142451

[picnixz]

!buildbot FIPS-only

[bedevere-bot]

The regex 'FIPS-only' did not match any buildbot builder. Is the requested builder in the list of stable builders?

[picnixz]

!buildbot FIPS

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @picnixz for commit cc591f8 🤖

Results will be shown at:

https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F142510%2Fmerge

The command will test the builders whose names match following regular expression: FIPS

The builders matched are:

• AMD64 CentOS9 FIPS No Builtin Hashes PR
• AMD64 CentOS9 FIPS Only Blake2 Builtin Hash PR
• AMD64 RHEL8 FIPS Only Blake2 Builtin Hash PR
• AMD64 RHEL8 FIPS No Builtin Hashes PR

[picnixz]

Oh by the way, there is a separate issue with _hashlib itself. I don't know if it's really an issue though but in FIPS mode, not having HMAC means that... we are actually not importing _hashlib at all. I didn't think about it but it's because I used EVP_MAC_FETCH with a NULL fetch properties.

I'll fix this separately but this week-end.

[bedevere-app]

GH-142698 is a backport of this pull request to the 3.14 branch.

[bedevere-app]

GH-142698 is a backport of this pull request to the 3.14 branch.

[bedevere-app]

GH-142701 is a backport of this pull request to the 3.13 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Debian root 3.x (tier-1) has failed when building commit d3ef5ba.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/345/builds/12922) and take a look at the build logs.
4. Check if the failure is related to this commit (d3ef5ba) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/345/builds/12922

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/test/support/__init__.py", line 847, in gc_collect
    gc.collect()
    ~~~~~~~~~~^^
ResourceWarning: unclosed file <_io.FileIO name=13 mode='wb' closefd=True>


Traceback (most recent call last):
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/test/support/__init__.py", line 847, in gc_collect
    gc.collect()
    ~~~~~~~~~~^^
ResourceWarning: unclosed file <_io.FileIO name=11 mode='wb' closefd=True>

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM64 MacOS M1 NoGIL 3.x (tier-2) has failed when building commit d3ef5ba.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1270/builds/6374) and take a look at the build logs.
4. Check if the failure is related to this commit (d3ef5ba) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1270/builds/6374

Failed tests:

• test_free_threading

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 13, done.        
remote: Counting objects:   9% (1/11)        
remote: Counting objects:  18% (2/11)        
remote: Counting objects:  27% (3/11)        
remote: Counting objects:  36% (4/11)        
remote: Counting objects:  45% (5/11)        
remote: Counting objects:  54% (6/11)        
remote: Counting objects:  63% (7/11)        
remote: Counting objects:  72% (8/11)        
remote: Counting objects:  81% (9/11)        
remote: Counting objects:  90% (10/11)        
remote: Counting objects: 100% (11/11)        
remote: Counting objects: 100% (11/11), done.        
remote: Compressing objects:  20% (1/5)        
remote: Compressing objects:  40% (2/5)        
remote: Compressing objects:  60% (3/5)        
remote: Compressing objects:  80% (4/5)        
remote: Compressing objects: 100% (5/5)        
remote: Compressing objects: 100% (5/5), done.        
remote: Total 13 (delta 6), reused 6 (delta 6), pack-reused 2 (from 2)        
From https://github.com/python/cpython
 * branch                    main       -> FETCH_HEAD
Note: switching to 'd3ef5ba34d3068b8178d6ff0f39462db6bbc4ad5'.

You are in 'detached HEAD' state. You can look around, make experimental
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do so (now or later) by using -c with the switch command. Example:

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Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at d3ef5ba34d3 gh-142451: correctly copy HMAC attributes in `HMAC.copy()` (#142510)
Switched to and reset branch 'main'

configure: WARNING: pkg-config is missing. Some dependencies may not be detected correctly.

make: *** [buildbottest] Error 2