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pk_internal: add support for opaque keys for getting EC curve ID

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Signed-off-by: valerio <valerio.setti@nordicsemi.no>
This commit is contained in:
valerio 2023-05-31 12:01:55 +02:00
parent f6853a8751
commit a87601dc11
1 changed files with 21 additions and 2 deletions
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23
library/pk_internal.h
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@ -84,11 +84,30 @@ static inline mbedtls_ecp_keypair *mbedtls_pk_ec_rw(const mbedtls_pk_context pk)
static inline mbedtls_ecp_group_id mbedtls_pk_get_group_id(const mbedtls_pk_context *pk) static inline mbedtls_ecp_group_id mbedtls_pk_get_group_id(const mbedtls_pk_context *pk)
{ {
mbedtls_ecp_group_id id; mbedtls_ecp_group_id id;
#if defined(MBEDTLS_USE_PSA_CRYPTO)
psa_key_attributes_t opaque_attrs = PSA_KEY_ATTRIBUTES_INIT;
psa_key_type_t opaque_key_type;
psa_ecc_family_t curve;
if (mbedtls_pk_get_type(pk) == MBEDTLS_PK_OPAQUE) {
if (psa_get_key_attributes(pk->priv_id, &opaque_attrs) != PSA_SUCCESS) {
return MBEDTLS_ECP_DP_NONE;
}
opaque_key_type = psa_get_key_type(&opaque_attrs);
curve = PSA_KEY_TYPE_ECC_GET_FAMILY(opaque_key_type);
id = mbedtls_ecc_group_of_psa(curve, psa_get_key_bits(&opaque_attrs), 0);
psa_reset_key_attributes(&opaque_attrs);
} else
#endif /* MBEDTLS_USE_PSA_CRYPTO */
{
#if defined(MBEDTLS_PK_USE_PSA_EC_DATA) #if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
id = mbedtls_ecc_group_of_psa(pk->ec_family, pk->ec_bits, 0); id = mbedtls_ecc_group_of_psa(pk->ec_family, pk->ec_bits, 0);
#else /* MBEDTLS_PK_USE_PSA_EC_DATA */ #else /* MBEDTLS_PK_USE_PSA_EC_DATA */
id = mbedtls_pk_ec_ro(*pk)->grp.id; id = mbedtls_pk_ec_ro(*pk)->grp.id;
#endif /* MBEDTLS_PK_USE_PSA_EC_DATA */ #endif /* MBEDTLS_PK_USE_PSA_EC_DATA */
}
return id; return id;
} }