mbedtls_ssl_{get,set}_session() exhibited idempotent behaviour
in Mbed TLS 2.x. Multiple calls to those functions are not useful
in TLS 1.2, and the idempotent nature is unsuitable for support of
TLS 1.3 which introduces the availabilty to offer multiple tickets
for resumption, as well as receive multiple tickets.
In preparation for TLS 1.3 support, this commit relaxes the semantics
of `mbedtls_ssl_{get,set}_session()` by allowing implementations to
fail gracefully, and leveraging this freedom by modifying the
existing TLS 1.2 implementation to only accept one call to
`mbedtls_ssl_{get,set}_session()` per context, and non-fatally
failing all subsequent invocations.
For TLS 1.3, it will be leveraged by making multiple calls to
`mbedtls_ssl_get_session()` issue one ticket a time until no more
tickets are available, and by using multiple calls to
`mbedtls_ssl_set_session()` to allow the client to offer multiple
tickets to the server.
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
The changed logic is to try a sign-message driver (opaque or transparent);
if there isn't one, fallback to builtin sofware and do the hashing,
then try a sign-hash driver. This will enable to the opaque driver
to fallback to software.
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
To avoid code duplication of the old-style SE interface usage
call psa_driver_wrapper_sign/verify_hash function instead of
the direct internal functions.
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
Update the mbedtls_test_psa_exercise_key to handle and use
PSA_KEY_USAGE_SIGN_MESSAGE and PSA_KEY_USAGE_VERIFY_MESSAGE key policies.
Add new tests for PSA_KEY_USAGE_SIGN_MESSAGE and PSA_KEY_USAGE_VERIFY_MESSAGE
policies.
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
Modify function and test case names that testing psa_sign_hash and
psa_verify_hash funtions to be less confusing with the newly introduced
function and test case names which tests psa_sign_message and
psa_verify_message functions.
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
Use common funtion for psa_sign_hash and psa_sign_message and one for
psa_verify_hash and psa_verify_message to unify them.
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
The reference output data was created with cryptodome for RSA algorithms and
python-ecdsa for ECDSA algorithms.
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
Modify function and test case names that testing psa_sign_hash and
psa_verify_hash funtions to be less confusing with the newly introduced
function and test case names which tests psa_sign_message and
psa_verify_message functions.
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
The reference session cache implementation may end up storing multiple
sessions associated to the same session ID if the set()-call for the
second session finds an outdated cache entry prior to noticing the entry
with the matching session ID. While this logically overwrites the existing
entry since we always search the cache in order, this is at least a waste
of resources.
This commit fixes this by always checking first whether the given ID is
already present in the cache.
It also restructures the code for easier readability.
Fixes#4509.
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
