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Restyle Move TI hardware acceleration into Matter repo #9580

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@restyled-io restyled-io bot commented Sep 9, 2021

A duplicate of #9579 with additional commits that automatically address
incorrect style, created by Restyled.

⚠️ Even though this PR is not a Fork, it contains outside contributions.
Please review accordingly.

Since the original Pull Request was opened as a fork in a contributor's
repository, we are unable to create a Pull Request branching from it with only
the style fixes.

The following Restylers made fixes:

To incorporate these changes, you can either:

  1. Merge this Pull Request instead of the original, or

  2. Ask your contributor to locally incorporate these commits and push them to
    the original Pull Request

    Expand for example instructions
    ```console
    git remote add upstream https://github.com/project-chip/connectedhomeip.git
    git fetch upstream pull/<this PR number>/head
    git merge --ff-only FETCH_HEAD
    git push
    ```
    

NOTE: As work continues on the original Pull Request, this process will
re-run and update (force-push) this Pull Request with updated style fixes as
necessary. If the style is fixed manually at any point (i.e. this process finds
no fixes to make), this Pull Request will be closed automatically.

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Moved the SHA, AES, and ECJPAKE alt headers and source files into the Matter
repository. Fixed an issue with the semantics of SHA256 context cloning.
Changed the CHIPCryptoPALmbedTLS.cpp implementation to clone the temporary
context back over the original context when done with the non-final
finalization. Increased the SHA context opaque size in CHIPCryptoPAL.h to fit
the TI driver accelerated SHA context.

In future commits it may be possible to share a single SHA driver instance
between all the contexts in mbedtls. This has the disadvantage of requiring a
mutex for driver usage and reference counting. This would also increase
processing time due to the thrashing of the internal digest buffer. But has the
potential advantage that the SHA context can be copied directly with a memcpy.
@restyled-io restyled-io bot closed this Sep 10, 2021
@restyled-io restyled-io bot deleted the restyled/pull-9579 branch September 10, 2021 20:11
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