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Unit-test the sequence of function calls that derive tls_psk, so that we
can be more confident that changes in the implementation don't break it.
Since the NVMe specification doesn't seem to include any test vectors
for this (nor does its description of the algorithm seem to match what
was actually implemented, for that matter), I just set the expected
values to the values that the code currently produces. In the case
of SHA-512, nvme_auth_generate_digest() currently returns -EINVAL, so
for now the test tests for that too. If it is later determined that
some other behavior is needed, the test can be updated accordingly.
Tested with:
tools/testing/kunit/kunit.py run --kunitconfig drivers/nvme/common/
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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