This is the higher-level, more Rust-friendly interface.
The features of this crate can modify what is compiled in from the PSA Crypto
specification:
* operations: everything is included. The psa-crypto-sys crate statically
links by default Mbed Crypto. See the documentation of that
crate
to see how to modify the linking options. This feature is activated by default.
* interface: only the abstraction over the PSA Crypto interface (types,
helper methods) are included. The MBEDTLS_INCLUDE_DIR environment variable
is needed to produce Rust shims around PSA Crypto macros.
* without any of the above: only the specification-defined parts are included.