This commit
- Reverts changes previously done to psa_crypto_helpers.[c,h]
- Implements a new check for open key slots in
mbedtls_test_helper_is_psa_leaking():
- when CTR_DRBG does not use AES_C or PSA does not have an external
RNG, then we allow 1 key slot (it's the one holding the AES key)
- when the above conditions are not met, then we fallback to the
usual check for "no open key slots remaining"
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
When AES_C is not defined CTR_DRBG relies on PSA to get AES-ECB. This
means that, when AES-ECB is accelerated, each random operation goes through
driver access as well. This might result in unexpectedly increased
counters for driver's access.
We add extra counters in test_driver_[cipher/key_management].c to be
more specific on which driver functions are accessed and ignore
extra accesses due to CTR_DRBG.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
When AES_C is not defined, CTR_DRBG relies on PSA to get AES-ECB. This means
that PSA holds an open AES key since psa_crypto_init() is called, which
- reduces the maximum number of available key slots
- shifts the 1st available index
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit also adds AES_PSA_[INIT/DONE] in "psa_crypto_helpers.h". Its
scope is to call PSA_[INIT/DONE] only when AES_C is not defined (which is
when PSA is effectively required for CTR_DRBG).
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
The module now depends on either:
- AES_C, which is the default and the preferred solution for
backward compatibility
- CRYPTO_C + KEY_TYPE_AES + ALG_ECB_NO_PADDINTG, which is the
new solution when AES_C is not defined
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
Same test cases as in the previous commit.
Remove the redundant symmetric crypto dependency.
The dependency is ensured by the fact that:
1) the test case forces a cipher suite
2) ssl-opt.sh enforces automatically that the
forced ciphersuite is available.
3) The fact that the forced ciphersuite is
available implies that the symmetric
cipher algorithm it uses is available as
well.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Fix some dependencies on symmetric crypto that
were not correct in case of driver but not
builtin support. Revealed by "Analyze driver
test_psa_crypto_config_accel_cipher_aead vs reference
test_psa_crypto_config_reference_cipher_aead" in
analyze_outcomes.py.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
While the PSA builtin implementation of cipher still depends on
CIPHER_C, the same is no more true for AEADs. When CIPHER_C is not
defined, BLOCK_CIPHER_C is used instead, thus making it possible
to support AEADs without CIPHER_C.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
