Fixes an issue on Windows where when source and build directory are on different drives hard-linking
to files or directory fails as it doesn't work across filesystem boundaries. Note that symlinking is also
not possible because it requires administrator privileges on Windows.
The solution copies the files using the built-in cmake `configure_file(src dest COPYONLY)` command.
As this command only operates on files, if a directory is specified the files will be globbed recursively
and through symlinks.
Signed-off-by: Dominik Gschwind <dominik.gschwind99@gmail.com>
- `CMAKE_C_EXTENSIONS`: Enable/disable compiler-specific extensions
- `CMAKE_C_STANDARD`: Set C standard (C99, C11)
- These variables (as set in mbedtls) set the C standard to C99
for ESP-IDF as well, resulting in build errors related to
`asm volatile`
- ESP32C2 has a hardware ECC accelerator that supports NIST P-192 and NIST P-256 curves,
which can increase the performance of the point multiplication and point
verification operation.
- Provision is also added to fallback to software implementation in
case the curve is not from the supported curves
- Override ecp_mul_restartable_internal with accelerator
- Many ECC operations use the internal API ecp_mul_restartable_internal
instead of the public API mbedtls_ecp_mul for point multiplication.
This will improve the performance of all those parent operations as
well
For exponential mod (API mbedtls_mpi_exp_mod) operation, some ESP target
chips needs to have ability for both hardware and software implementation.
Hardware implementation provided performance advantage but it can only
support upto 3072 bit operations (e.g., ESP32-C3) and hence we fallback
to software implementation in such cases (e.g., 4096 bit operations).
Earlier this was handled using linker "--wrap" flag but that does not
work in all scenarios as API `mbedtls_mpi_exp_mod` is being used in
same tranlation (compilation unit).
This approach was found to be next best option with minimal changes in
mbedTLS library.
The parameters for init_handshake_options had changed on the development
branch after this test was created, so fixing up this test in order to
correct build failures after merge.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Use a more straightforward condition to note that session resumption
is happening.
Co-authored-by: Ronald Cron <ronald.cron@arm.com>
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
Force a bad session_id_len before handshake wrapup. This should
result in a forced jump to a clean up of a serialized session.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
Dominik Gschwind