This commit adds a field `psk_opaque` to the handshake parameter
struct `mbedtls_ssl_handshake_params` which indicates if the user
has configured the use of an opaque PSK.
This commit adds two public API functions
mbedtls_ssl_conf_psk_opaque()
mbedtls_ssl_set_hs_psk_opaque()
which allow to configure the use of opaque, PSA-maintained PSKs
at configuration time or run time.
In case of AEAD ciphers, the cipher mode (and not even the entire content
of mbedtls_cipher_info_t) doesn't uniquely determine a psa_algorithm_t
because it doesn't specify the AEAD tag length, which however is included
in psa_algorithm_t identifiers.
This commit adds a tag length value to mbedtls_psa_translate_cipher_mode()
to account for that ambiguity.
This commit adds the header file mbedtls/psa_util.h which contains
static utility functions `mbedtls_psa_xxx()` used in the integration
of PSA Crypto into Mbed TLS.
Warning: These functions are internal only and may change at any time.
Add a test to ensure that when the crypto submodule is not used, the crypto
library is not created and that libmbedcrypto.a does not contain symbols
from files contained within the crypto submodule.
- Check that libmbedcrypto was not built at the top level.
- Check that we've built libmbedcrypto with the correct files. Build
libmbedcrypto with debug symbols and verify that files used are from the
crypto submodule.
- Check that config.h is handled properly. Enable a feature at the top
level that the crypto library submodule has disabled in its config.h, and
check that the library symboles indicate that the feature is present in
libmbedcrypto.
- Ensure basic functionality of the resulting build with a run of
`make test` and `ssl-opt.sh`.
Without a "--detach" option, git worktree will refuse to checkout a branch
that's already checked out. This makes the abi_check.py script not very
useful for checking the currently checked out branch, as git will error
that the branch is already checked out. Add the "--detach" option to check
out the new temporary worktree in detached head mode. This is acceptable
because we aren't planning on working on the branch and just want a
checkout to do ABI checking from.
When running `make install`, it can be desirable for the PSA Crypto header
files to get installed as well, so that the PSA portions of the library are
usable.
Note that one can also use CMake and doesn't strictly require GNU Make. For
instance, telling CMake to output Visual Studio project files and using
those would preclude the need for GNU Make.
For Makefiles, enable overriding where includes can come from in order to
enable the parent module to set the include path. This allows the parent
module to specify that its config.h should be used, even when the submodule
when built standalone would use a different config.h.
For CMake, always look in the parent's include folder and our own. List the
parent's include folder first, so that preference is given to parent
include files.
