Corresponds better to the validation done in other modules of PSA Crypto.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
As we want to do Mbed TLS aead operations as a
driver does, aead operations should not access
the key slot as key slots are not available to
drivers.
Second step in this PR: do not unlock the key slot
as part of operation abort.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
As we want to do Mbed TLS aead operations as a
driver does, aead operations should not access
the key slot as key slots are not available to
drivers.
First step in this PR: move key resolution from
aead operation setup to psa_aead_encrypt/decrypt
APIs.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
When creating a persistent key or registering a key
with an invalid key identifier return
PSA_ERROR_INVALID_ARGUMENT instead of
PSA_ERROR_INVALID_HANDLE.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Remove cipher_generate_iv driver entry point as there
is no known use case to delegate this to a driver.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Symmetric key management is not intended to be
delegated to drivers. Thus, key management code
for a given symmetric key type should be included
in the library whether or not the support for
cryptographic operations based on that type of
symmetric key may be delegated to drivers.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Move members that are of no use to the PSA crypto core
to the Mbed TLS implementation specific operation context.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
For cipher multi-part operations, dispatch based on
the driver identifier even in the case of the
Mbed TLS software implementation (viewed as a driver).
Also use the driver identifier to check that an
cipher operation context is active or not.
This aligns the way hash and cipher multi-part
operations are dispatched.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Change the operation context to the PSA one to be
able to call the software implementation from
the driver wrapper later on.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Change the signature of
psa_driver_wrapper_cipher_encrypt/decrypt_setup to
that of a PSA driver cipher_encrypt/decrypt_setup
entry point.
Change the operation context to the PSA one to be
able to call the software implementation from
the driver wrapper later on.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Split out the cipher setup based on cipher.c
in psa_cipher_setup_internal() whose signature
is that of a PSA driver cipher_setup entry
point.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Rework psa_cipher_setup in preparation of
calling the cipher setup based on cipher.c
through the interface of a PSA driver
cipher_setup entry point.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
To run succesfully the test
"PSA sign: invalid algorithm for ECC key" of
test_suite_psa_crypto when ECDSA support is not included
in the library, always return INVALID_ARGUMENT
in case of an ECC key not used for ECDSA, whether
ECDSA support is present or not.
Then apply the same logic to RSA sign RSA and RSA/ECC
verify for the sake of consistency.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Add missing PSA_WANT_CCM/GCM/CMAC. This completes
the set of PSA_WANT config options given the
current support of PSA crypto in Mbed TLS.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
If an elliptic curve was enabled in the Mbed TLS classic API (#define
MBEDTLS_ECP_DP_xxx), but not enabled in the PSA configuration (#define
PSA_WANT_ECC_xxx), it would still work if you tried to use it through
PSA.
This is generally benign, but could be a security issue if you want to
disable a curve in PSA for some security reason (such as a known bug
in its implementation, which may not matter in the classic API if Mbed
TLS is running in a secure enclave and is only reachable from
untrusted callers through the PSA API). More urgently, this broke
test_suite_psa_crypto_not_supported.generated.
So if a curve is not enabled in the PSA configuration, ensure that
it's treated as unsupported through the PSA software implementation.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Apparently there's a goal to make the PSA Crypto core free from
dynamic memory allocations. Therefore, all driver context structures
need to be known at compile time in order for the core to know their
final size.
This change defines & implements for hashing operations how the context
structures get defined.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
mac size is previously checked to not be less than 4, so it can't be zero
anymore at this point.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
When ECDSA is not supported by the library, prefer
to return NOT_SUPPORTED than INVALID_ARGUMENT when
asked for an ECDSA signature.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Move the check that ECDSA is supported from the
caller of the function responsible for Mbed TLS
ECDSA signatures to this function, namely
mbedtls_psa_ecdsa_sign_hash().
This makes the caller code more readable and is
more aligned with what is expected from a
sign_hash() PSA driver entry point.
Add a negative test case where a deterministic
ECDSA signature is requested while the library
does not support deterministic ECDSA.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Reworked the validation of MAC algorithm with the used key type by
introducing psa_mac_key_can_do, which guarantees that PSA_MAC_LENGTH can
be called successfully after validation of the algorithm and key type.
This means psa_get_mac_output_length is no longer required.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
Comparing algorithm with its FULL_LENGTH_MAC version doesn't work in
cases where algorithm is a wildcard. Wildcard input is not specified in
the documentation of the function, but in order to test the function
using the same test as PSA_MAC_LENGTH we're mimicking that behaviour here.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
Avoid code duplication. Also update the guarantees made by the function
doc to match the guarantees given by PSA_MAC_LENGTH.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
This makes it more in-line with how psa_key_policy_permits works. It
also adds consistency: the intersection of MAC with default length and
MAC with exact-length is now computed correctly in case the exact length
equals the default length of the algorithm when used with the given
key type.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
Change psa_ecdsa_sign/verify signature to that of
a sign/verify_hash driver entry point before to
move them to the psa_crypto_ecp.c ECP specific file.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Change psa_rsa_sign/verify signature to that of
a sign/verify_hash driver entry point before to
move them to the psa_crypto_rsa.c RSA specific file.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Change psa_driver_wrapper_sign/verify_hash signature
to that of a sign/verify_hash driver entry point.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Wrap sign/verify_hash software implementation into
psa_sign/verify_hash_internal() functions whose
signature is that of a sign/verify_hash driver
entry point.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Change the psa_crypto use of the CHACHA20 cipher to also use the new
MBEDTLS_PSA_BUILTIN_KE_TYPE_CHACHA20.
Signed-off-by: David Brown <david.brown@linaro.org>
Change a few conditionals in the psa library to be based on the
MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES instead of the WANT macros. Future
additions of HW acceleration will need to be mindful of these
definitions if any of this code is needed in those instances.
Signed-off-by: David Brown <david.brown@linaro.org>
When converting definitions to use the new PSA defines, one erroneously
was conditionalized on the WANT macro instead of on the BUILTIN macro.
Signed-off-by: David Brown <david.brown@linaro.org>
There are a few instances of MBEDTLS_*_C (specifically for DES) in
psa_crypto.c. Change to the PSA_WANT_KEY_TYPE_DES macros to reflect the
new PSA crypto config.
Signed-off-by: David Brown <david.brown@linaro.org>
This file will always be used with the PSA configurations, so use the
MBEDTLS_PSA_BUILTIN... definitions for the symmetric cyphers.
Signed-off-by: David Brown <david.brown@linaro.org>
Use PSA_EXPORT_KEY_OUTPUT_SIZE macro to compute the
size of the buffer to contain the generated key
instead of computing it alongside the key type and
size validation.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
When generating transparent keys, we need to be able
to compute the size of the key buffer whether the
key is generated by the Mbed TLS library or by an
accelerator. Thus, change the RSA/ECP
MBEDTLS_PSA_BUILTIN_... compilation guards with
their PSA_WANT_... counterparts.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Change psa_generate_key_internal() signature to
that of a PSA driver generate_key entry point.
That way, this function can be called by the
driver wrapper when a software fallback is
necessary.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Preparatory commit to eventually change
psa_generate_key_internal() signature to that of
a PSA driver generate_key entry point.
To be able to change the signature, the buffer to
store the generated key has to be allocated before
the call to psa_generate_key_internal().
This commit moves the allocation and clean-up in
case of error of the buffer to store the generated
key from psa_generate_key_internal() to
psa_generate_key().
This has the nice benefit of factorizing the key
buffer allocation and clean-up.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Preparatory commit to eventually change
psa_generate_key_internal() signature to that of
a PSA driver generate_key entry point.
To be able to change the signature, the buffer to
store the key has to be allocated before the call
to psa_generate_key_internal() thus its size has
to be calculed beforehand as well.
This is the purpose of this commit: to move the
computation of the key size in bytes out of
psa_generate_key_internal().
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Small improvements to psa_generate_key_internal()
implementation:
. declare only once the status local variable and
initialize it to PSA_ERROR_CORRUPTION_DETECTED
to improve robustness against FI attacks.
. remove an unnecessary assignment.
. use type local variable instead of its global
variable equivalent.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
