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Add a common key agreement parameter validation function across iop and normal APIs

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Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
This commit is contained in:
Waleed Elmelegy 2024-10-30 16:44:20 +00:00
parent 18df1c560a
commit cd721b9870
1 changed files with 24 additions and 15 deletions
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39
tf-psa-crypto/core/psa_crypto.c
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@ -7732,6 +7732,24 @@ exit:
return (status == PSA_SUCCESS) ? unlock_status : status;
}
static psa_status_t validate_key_agreement_params(const psa_key_attributes_t *attributes,
psa_algorithm_t alg)
{
psa_key_type_t key_type;
if (!PSA_ALG_IS_RAW_KEY_AGREEMENT(alg)) {
return PSA_ERROR_INVALID_ARGUMENT;
}
key_type = psa_get_key_type(attributes);
if (key_type != PSA_KEY_TYPE_DERIVE && key_type != PSA_KEY_TYPE_RAW_DATA
&& key_type != PSA_KEY_TYPE_HMAC && key_type != PSA_KEY_TYPE_PASSWORD) {
return PSA_ERROR_INVALID_ARGUMENT;
}
return PSA_SUCCESS;
}
psa_status_t psa_key_agreement(mbedtls_svc_key_id_t private_key,
const uint8_t *peer_key,
size_t peer_key_length,
@ -7742,14 +7760,12 @@ psa_status_t psa_key_agreement(mbedtls_svc_key_id_t private_key,
psa_status_t status;
uint8_t shared_secret[PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE];
size_t shared_secret_len;
psa_key_type_t key_type;
*key = MBEDTLS_SVC_KEY_ID_INIT;
key_type = psa_get_key_type(attributes);
if (key_type != PSA_KEY_TYPE_DERIVE && key_type != PSA_KEY_TYPE_RAW_DATA
&& key_type != PSA_KEY_TYPE_HMAC && key_type != PSA_KEY_TYPE_PASSWORD) {
return PSA_ERROR_INVALID_ARGUMENT;
status = validate_key_agreement_params(attributes, alg);
if (status != PSA_SUCCESS) {
return status;
}
status = psa_raw_key_agreement(alg, private_key, peer_key, peer_key_length, shared_secret,
@ -7807,23 +7823,16 @@ psa_status_t psa_key_agreement_iop_setup(
defined(MBEDTLS_PSA_BUILTIN_ALG_ECDH)
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
psa_key_type_t key_type;
psa_key_slot_t *slot = NULL;
if (operation->id != 0 || operation->error_occurred) {
return PSA_ERROR_BAD_STATE;
}
if (!PSA_ALG_IS_RAW_KEY_AGREEMENT(alg)) {
status = validate_key_agreement_params(attributes, alg);
if (status != PSA_SUCCESS) {
operation->error_occurred = 1;
return PSA_ERROR_INVALID_ARGUMENT;
}
key_type = psa_get_key_type(attributes);
if (key_type != PSA_KEY_TYPE_DERIVE &&
key_type != PSA_KEY_TYPE_RAW_DATA) {
operation->error_occurred = 1;
return PSA_ERROR_INVALID_ARGUMENT;
return status;
}
status = psa_get_and_lock_transparent_key_slot_with_policy(