Create a new compilation option for a dynamically resized key store. The
implementation will follow in subsequent commits.
This option is off by default with custom configuration files, which is best
for typical deployments on highly constrained platforms. This option is on
by default with the provided configuration file, which is best for typical
deployments on relatively high-end platforms.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
In public headers, we want to avoid things that are not standard C++,
including features that GCC and Clang support as extensions, such as
flexible array members. So compile with `-pedantic`.
Non-regression for https://github.com/Mbed-TLS/mbedtls/issues/9020.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
We know it's a thin wrapper around psa_generate_key_custom, so we just need
to check that it's passing the information through, we don't need coverage
of the parameter interpretation.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Implement `psa_generate_key_custom()` and
`psa_key_derivation_output_key_custom()`. These functions replace
`psa_generate_key_ext()` and `psa_key_derivation_output_key_ext()`.
They have the same functionality, but a slightly different interface:
the `ext` functions use a structure with a flexible array member to pass
variable-length data, while the `custom` functions use a separate parameter.
Keep the `ext` functions for backward compatibility with Mbed TLS 3.6.0.
But make them a thin wrapper around the new `custom` functions.
Duplicate the test code and data. The test cases have to be duplicated
anyway, and the test functions are individually more readable this way.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
When PSA uses CTR_DRBG for its random generator and CTR_DRBG uses PSA for
AES, as currently implemented, there is one volatile key in permanent use
for the CTR_DRBG instance. Account for that in tests that want to know
exactly how many volatile keys are in use, or how many volatile keys can be
created.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
When the PSA RNG uses AES through a PSA driver, it consumes one volatile key
identifier. When MBEDTLS_PSA_KEY_SLOT_DYNAMIC is enabled, that identifier
happens to coincide with the key ID value that the test case assumes not to
exist. Use a different value that avoids this coincidence.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Split the "many transient keys" test function in two: one that expects to
successfully create many keys, and one that expects to fill the key store.
This will make things easier when we add a dynamic key store where filling
the key store is not practical unless artificially limited.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
PSA_KEY_ID_VOLATILE_MIN-1 is now in the persistent key ID range, so it's no
longer an invalid key ID for registration.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Restricting the built-in key range would be an API break since applications
can hard-code a built-in key value and expect that it won't clash with
anything else. Make it harder to accidentally break the API.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
mbedtls_psa_register_se_key() is not usable with volatile keys, since there
is no way to return the implementation-chosen key identifier which would be
needed to use the key. Document this limitation. Reject an attempt to create
such an unusable key. Fixes#9253.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Make it possible, but not officially supported, to switch the CTR_DRBG
module to PSA mode even if MBEDTLS_AES_C is defined. This is not really
useful in practice, but is convenient to test the PSA mode without setting
up drivers.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
mbedtls_test_mock_tcp_recv_msg is currently popping a message
queue and does not check if this was done correctly.
This extra check makes the test more complete/robust.
Signed-off-by: Tomás González <tomasagustin.gonzalezorlando@arm.com>
