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580d1f4954
Do constant-time testing in a couple of configurations that give some interesting coverage; * In a configuration that's close to the default: `test_aes_only_128_bit_keys`. Having only 128-bit AES keys doesn't reduce the interesting scope much (except that it doesn't test 192-bit and 256-bit AES, but since that configuration uses hardware AES, we don't care about that part). * when PSA buffer copying is not done, i.e. when `MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS` is enabled. This will be very relevant for the upcoming PSA constant-time tests. Use Valgrind, since some of the interesting tests require constant-time AES, which for us means AESNI or AESCE, which MSan doesn't support. Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>