Instead of using the legacy mbedtls_ecp_mul() function which makes use of
ECP's math, this commit adds a new function named pk_derive_public_key()
which implements the same behavior using PSA functions.
The flow is simple:
- import the private key into PSA
- export its public part
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
Introduce MD_OR_USE_PSA_INIT/DONE. This will likely be used everywhere
in X.509 and SSL/TLS, but most places in PK only need USE_PSA_INIT/DONE.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
As a public header, it should no longer include common.h, just use
build_info.h which is what we actually need anyway.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This is necessary for the case where the public part of an EC keypair
needs to be computed from the private part - either because it was not
included (it's an optional component) or because it was compressed (a
format we can't parse).
This changes the API of two public functions: mbedtls_pk_parse_key() and
mbedtls_pk_parse_keyfile().
Tests and programs have been adapted. Some programs use a non-secure RNG
(from the test library) just to get things to compile and run; in a
future commit this should be improved in order to demonstrate best
practice.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
