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Merge pull request #6426 from aditya-deshpande-arm/driver-wrapper-key-agreement

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Add driver dispatch layer for raw key agreement, along with test call for transparent drivers.
This commit is contained in:
Paul Elliott
2022-12-01 11:40:52 +00:00
committed by GitHub
parent a942b370fe 5484e96117
commit 266f79c136
15 changed files with 678 additions and 98 deletions
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68
scripts/data_files/driver_templates/psa_crypto_driver_wrappers.c.jinja
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@@ -2476,4 +2476,72 @@ psa_status_t psa_driver_wrapper_asymmetric_decrypt(
}
}
psa_status_t psa_driver_wrapper_key_agreement(
const psa_key_attributes_t *attributes,
const uint8_t *key_buffer,
size_t key_buffer_size,
psa_algorithm_t alg,
const uint8_t *peer_key,
size_t peer_key_length,
uint8_t *shared_secret,
size_t shared_secret_size,
size_t *shared_secret_length
)
{
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
psa_key_location_t location =
PSA_KEY_LIFETIME_GET_LOCATION( attributes->core.lifetime );
switch( location )
{
case PSA_KEY_LOCATION_LOCAL_STORAGE:
/* Key is stored in the slot in export representation, so
* cycle through all known transparent accelerators */
#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#if defined(PSA_CRYPTO_DRIVER_TEST)
status =
mbedtls_test_transparent_key_agreement( attributes,
key_buffer, key_buffer_size, alg, peer_key,
peer_key_length, shared_secret, shared_secret_size,
shared_secret_length );
if( status != PSA_ERROR_NOT_SUPPORTED )
return( status );
#endif /* PSA_CRYPTO_DRIVER_TEST */
#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
/* Software Fallback */
status = psa_key_agreement_raw_builtin( attributes,
key_buffer,
key_buffer_size,
alg,
peer_key,
peer_key_length,
shared_secret,
shared_secret_size,
shared_secret_length );
return( status );
#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#if defined(PSA_CRYPTO_DRIVER_TEST)
case PSA_CRYPTO_TEST_DRIVER_LOCATION:
return( mbedtls_test_opaque_key_agreement( attributes,
key_buffer, key_buffer_size, alg, peer_key,
peer_key_length, shared_secret, shared_secret_size,
shared_secret_length ) );
#endif /* PSA_CRYPTO_DRIVER_TEST */
#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
default:
(void) attributes;
(void) key_buffer;
(void) key_buffer_size;
(void) peer_key;
(void) peer_key_length;
(void) shared_secret;
(void) shared_secret_size;
(void) shared_secret_length;
return( PSA_ERROR_NOT_SUPPORTED );
}
}
#endif /* MBEDTLS_PSA_CRYPTO_C */