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Change signature of mbedtls_psa_platform_get_builtin_key

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Instead of the full attributes struct, it now only takes/returns what it
actually needs to.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
This commit is contained in:
Steven Cooreman
2021-03-18 20:48:06 +01:00
parent 4b51925ede
commit c8b9534378
3 changed files with 50 additions and 35 deletions
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28
include/psa/crypto_extra.h
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@ -759,14 +759,13 @@ static inline int psa_key_id_is_builtin( psa_key_id_t key_id )
( key_id <= MBEDTLS_PSA_KEY_ID_BUILTIN_MAX ) );
}
/** Platform function to obtain the data of a built-in key.
/** Platform function to obtain the location and slot of a built-in key.
*
* An application-specific implementation of this function must be provided if
* #MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS is enabled. This would typically be provided
* as part of a platform's system image.
*
* Call psa_get_key_id(\p attributes) to obtain the key identifier \c key_id.
* #MBEDTLS_SVC_KEY_ID_GET_KEY_ID(\p key_id) is in the range from
* #MBEDTLS_SVC_KEY_ID_GET_KEY_ID(\p key_id) needs to be in the range from
* #MBEDTLS_PSA_KEY_ID_BUILTIN_MIN to #MBEDTLS_PSA_KEY_ID_BUILTIN_MAX.
*
* In a multi-application configuration
@ -774,16 +773,15 @@ static inline int psa_key_id_is_builtin( psa_key_id_t key_id )
* this function should check that #MBEDTLS_SVC_KEY_ID_GET_OWNER_ID(\p key_id)
* is allowed to use the given key.
*
* \param[in,out] attributes On entry, this is #PSA_KEY_ATTRIBUTES_INIT or
* an equivalent value, except that the key
* identifier field is set.
* On successful return, this function must set
* the attributes of the key: lifetime, type,
* bit-size, usage policy.
* \param[out] slot_number On successful return, this function must set
* this to the slot number known to the driver for
* the lifetime location reported through
* \p attributes which corresponds to the
* \param key_id The key ID for which to retrieve the
* location and slot attributes.
* \param[out] lifetime On success, the lifetime associated with the key
* corresponding to \p key_id. Lifetime is a
* combination of which driver contains the key,
* and with what lifecycle the key can be used.
* \param[out] slot_number On success, the slot number known to the driver
* registered at the lifetime location reported
* through \p location which corresponds to the
* requested built-in key.
*
* \retval #PSA_SUCCESS
@ -801,7 +799,9 @@ static inline int psa_key_id_is_builtin( psa_key_id_t key_id )
* is not allowed to access it.
*/
psa_status_t mbedtls_psa_platform_get_builtin_key(
psa_key_attributes_t *attributes, psa_drv_slot_number_t *slot_number );
mbedtls_svc_key_id_t key_id,
psa_key_lifetime_t *lifetime,
psa_drv_slot_number_t *slot_number );
#endif /* MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS */
/** @} */