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Add PSA iop export public-key setup API

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Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
This commit is contained in:
Waleed Elmelegy 2024-11-20 11:56:09 +00:00
parent 3d5ed793e7
commit cd189e881b
1 changed files with 52 additions and 2 deletions
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54
tf-psa-crypto/core/psa_crypto.c
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@ -1689,12 +1689,62 @@ uint32_t psa_export_public_key_iop_get_num_ops(psa_export_public_key_iop_t *oper
}
psa_status_t psa_export_public_key_iop_setup(psa_export_public_key_iop_t *operation,
psa_key_id_t key)
mbedtls_svc_key_id_t key)
{
#if defined(MBEDTLS_ECP_RESTARTABLE)
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
size_t key_size = 0;
psa_key_attributes_t private_key_attributes;
psa_key_type_t private_key_type;
psa_key_slot_t *slot = NULL;
if (operation->id != 0 || operation->error_occurred) {
return PSA_ERROR_BAD_STATE;
}
/* We only support the builtin/Mbed TLS driver for now. */
operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;
status = psa_get_and_lock_transparent_key_slot_with_policy(key, &slot,
0,
0);
if (status != PSA_SUCCESS) {
goto exit;
}
private_key_attributes = slot->attr;
if (status != PSA_SUCCESS) {
goto exit;
}
private_key_type = psa_get_key_type(&private_key_attributes);
if (!PSA_KEY_TYPE_IS_ECC_KEY_PAIR(private_key_type)) {
goto exit;
}
key_size = PSA_EXPORT_KEY_OUTPUT_SIZE(private_key_type,
psa_get_key_bits(&private_key_attributes));
if (key_size == 0) {
goto exit;
}
status = mbedtls_psa_ecp_export_public_key_iop_setup(&operation->ctx, slot->key.data,
slot->key.bytes, &private_key_attributes);
exit:
unlock_status = psa_unregister_read_under_mutex(slot);
if (status != PSA_SUCCESS) {
psa_export_public_key_iop_abort_internal(operation);
operation->error_occurred = 1;
return status;
}
return unlock_status;
#else
(void) operation;
(void) key;
return PSA_ERROR_NOT_SUPPORTED;
#endif
}
psa_status_t psa_export_public_key_iop_complete(psa_export_public_key_iop_t *operation,