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mbedtls_pk_get_psa_attributes: support MBEDTLS_PK_USE_PSA_EC_DATA

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2024-01-23 11:05:34 +01:00
parent 7354f1e178
commit f3dbc98d96
2 changed files with 38 additions and 11 deletions
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13
library/pk.c
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@ -464,11 +464,24 @@ int mbedtls_pk_get_psa_attributes(const mbedtls_pk_context *pk,
{
int sign_ok = (pk_type != MBEDTLS_PK_ECKEY_DH);
int derive_ok = (pk_type != MBEDTLS_PK_ECDSA);
#if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
psa_key_attributes_t old_attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
status = psa_get_key_attributes(pk->priv_id, &old_attributes);
if (status != PSA_SUCCESS) {
return MBEDTLS_ERR_PK_BAD_INPUT_DATA;
}
psa_key_type_t old_type = psa_get_key_type(&old_attributes);
int has_private = PSA_KEY_TYPE_IS_KEY_PAIR(old_type);
size_t bits = psa_get_key_bits(&old_attributes);
psa_ecc_family_t family = PSA_KEY_TYPE_ECC_GET_FAMILY(old_type);
#else
mbedtls_ecp_keypair *ec = mbedtls_pk_ec(*pk);
int has_private = (ec->d.n != 0);
size_t bits = 0;
psa_ecc_family_t family =
mbedtls_ecc_group_to_psa(ec->grp.id, &bits);
#endif
int want_private = 0;
psa_algorithm_t alg = 0;
switch (usage) {