The problem was that the private key ID was destroyed even when
MBEDTLS_PK_USE_PSA_EC_DATA was enabled and of course this was
not correct.
At the same time the code has been slighlty reorganized to make
it more readable.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
Allocation does not need to perform any action since the priv_id field
is already present on the pk_context.
Free should destroy the key. Of course this is true only if the key
is not opaque (because in that case it's the user responsibility
to do so).
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
Instead of using the legacy mbedtls_ecp_check_pub_priv() function which
was based on ECP math, we add a new option named eckey_check_pair_psa()
which takes advantage of PSA.
Of course, this is available when MBEDTLS_USE_PSA_CRYPTO in enabled.
Tests were also fixed accordingly.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
GCC 4.6+ complains if a deprecated function calls another.
Working around this universally would require a lot of
preprocessing, this seems to be an easier solution.
Copy mbedtls_pk_error_from_psa code without duplicates
instead of calling the function.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
Move all error translation utilities to psa_util.c.
Introduce macros and functions to avoid having
a local copy of the error translating function in
each place.
Identify overlapping errors and introduce a
generic function.
Provide a single macro for all error translations
(unless one file needs a couple of different ones).
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
To better reflect what the code relies on, limit the headers that are
included when MBEDTLS_USE_PSA_CRYPTO is disabled. Also stop including
"pkwrite.h" when it is no longer needed.
Include "mbedlts/platform_util.h" unconditionally. It was only included for
RSA ALT but was also used for MBEDTLS_USE_PSA_CRYPTO (the code worked
because other headers include "mbedtls/platform_util.h").
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Under MBEDTLS_USE_PSA_CRYPTO, ecdsa_sign_wrap() was calling
mbedtls_pk_write_key_der() to write a private key in SEC1 format, only to
then extract the part that represents the private value which is what
psa_import_key() actually wants. Instead, call an mpi function to directly
get the private key in the desired format.
This slightly reduces the code size and stack usage, and removes a
dependency on pk_write.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Under MBEDTLS_USE_PSA_CRYPTO, ecdsa_verify_wrap() was calling
mbedtls_pk_write_pubkey() to write a public key in the form of a
subjectPublicKey, only to then extract the part that represents the EC
point which psa_import_key() actually wants. Instead, call an ecp
function to directly get the public key in the desired format (just the
point).
This slightly reduces the code size and stack usage, and removes a
dependency on pk_write.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This fixes the two failing cases in test_suite_pk when ECP_RESTARTABLE
and USE_PSA_CRYPTO are both enabled. The two failing cases where
ECDSA restartable sign/verify: ECDSA, max_ops=0 (disabled)
ECDSA restartable sign/verify: ECKEY, max_ops=0 (disabled)
associated with test function pk_sign_verify_restart(). The failure was
caused by the interaction of several things that are each reasonable on
their own:
1. The test function relies on ECDSA restartable, which is reasonable as it
allows making sure that the generated signature is correct with a simple
memcmp().
2. The implementation of pk_sign_restartable() has a shortcut to
dispatch to the sign function (as opposed to sign_restartable) when
restart is disabled (max_ops == 0).
3. When USE_PSA is enabled, the sign function dispatches to PSA, which
so far always used ECDSA (non-deterministic) even when the non-PSA
version would use deterministic ECDSA.
This could be fixed by changing any of those. I chose (3) because I
think it makes sense that when PK dispatches to PSA instead of legacy
this should not change which version of ECDSA is selected.
OTOH, I think it makes sense to keep (2), because that means more
opportunities to dispatch to PSA.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
We used to include platform.h only when MBEDTLS_PLATFORM_C was enabled, and
to define ad hoc replacements for mbedtls_xxx functions on a case-by-case
basis when MBEDTLS_PLATFORM_C was disabled. The only reason for this
complication was to allow building individual source modules without copying
platform.h. This is not something we support or recommend anymore, so get
rid of the complication: include platform.h unconditionally.
There should be no change in behavior since just including the header should
not change the behavior of a program.
This commit replaces most occurrences of conditional inclusion of
platform.h, using the following code:
```
perl -i -0777 -pe 's!#if.*\n#include "mbedtls/platform.h"\n(#else.*\n(#define (mbedtls|MBEDTLS)_.*\n|#include <(stdarg|stddef|stdio|stdlib|string|time)\.h>\n)*)?#endif.*!#include "mbedtls/platform.h"!mg' $(git grep -l '#include "mbedtls/platform.h"')
```
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This is mostly:
sed -i 's/mbedtls_psa_translate_md/mbedtls_hash_info_psa_from_md/' \
library/*.c tests/suites/*.function
This should be good for code size as the old inline function was used
from 10 translation units inside the library, so we have 10 copies at
least.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
Then mbedtls_pk_error_from_psa_rsa() also needs to be guarded with
PSA_WANT_KEY_TYPE_RSA_KEY_PAIR to be used by pk_opaque_rsa_decrypt()
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
