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psa_key_attributes_t: move slot_number to core structure

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Move the `slot_number` field of `psa_key_attributes_t` to
`psa_core_key_attributes_t`. This makes ``psa_core_key_attributes_t` core`
the sole field of `psa_key_attributes_t`. This paves the way to unifying
the two structures.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2024-02-27 23:21:15 +01:00
parent 8988767b0e
commit 0f40a41cea
3 changed files with 12 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/psa/crypto_extra.h
View File

@ -130,7 +130,7 @@ static inline void psa_set_key_slot_number(
psa_key_slot_number_t slot_number)
{
attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(flags) |= MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER;
attributes->MBEDTLS_PRIVATE(slot_number) = slot_number;
attributes->MBEDTLS_PRIVATE(core).MBEDTLS_PRIVATE(slot_number) = slot_number;
}
/** Remove the slot number attribute from a key attribute structure.

24
include/psa/crypto_struct.h
View File

@ -290,6 +290,9 @@ typedef uint16_t psa_key_attributes_flag_t;
0)
typedef struct {
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
psa_key_slot_number_t MBEDTLS_PRIVATE(slot_number);
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
psa_key_type_t MBEDTLS_PRIVATE(type);
psa_key_bits_t MBEDTLS_PRIVATE(bits);
psa_key_lifetime_t MBEDTLS_PRIVATE(lifetime);
@ -309,29 +312,22 @@ typedef struct {
mbedtls_svc_key_id_t MBEDTLS_PRIVATE(id);
} psa_core_key_attributes_t;
#define PSA_CORE_KEY_ATTRIBUTES_INIT { PSA_KEY_TYPE_NONE, 0, \
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
#define PSA_KEY_ATTRIBUTES_MAYBE_SLOT_NUMBER 0,
#else
#define PSA_KEY_ATTRIBUTES_MAYBE_SLOT_NUMBER
#endif
#define PSA_CORE_KEY_ATTRIBUTES_INIT { PSA_KEY_ATTRIBUTES_MAYBE_SLOT_NUMBER \
PSA_KEY_TYPE_NONE, 0, \
PSA_KEY_LIFETIME_VOLATILE, \
PSA_KEY_POLICY_INIT, 0, \
MBEDTLS_SVC_KEY_ID_INIT }
struct psa_key_attributes_s {
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
psa_key_slot_number_t MBEDTLS_PRIVATE(slot_number);
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
/* With client/service separation, struct psa_key_attributes_s is
* marshalled through a transport channel between the client and
* service side implementation of the PSA Crypto APIs, thus having
* the mbedtls_svc_key_id_t id as the last field of this structure
* allows for a more efficient marshalling/unmarshalling of parameters
*/
psa_core_key_attributes_t MBEDTLS_PRIVATE(core);
};
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
#define PSA_KEY_ATTRIBUTES_INIT { 0, PSA_CORE_KEY_ATTRIBUTES_INIT }
#else
#define PSA_KEY_ATTRIBUTES_INIT { PSA_CORE_KEY_ATTRIBUTES_INIT }
#endif
static inline struct psa_key_attributes_s psa_key_attributes_init(void)
{

2
library/psa_crypto.c
View File

@ -1246,7 +1246,7 @@ psa_status_t psa_get_key_slot_number(
psa_key_slot_number_t *slot_number)
{
if (attributes->core.flags & MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER) {
*slot_number = attributes->slot_number;
*slot_number = attributes->core.slot_number;
return PSA_SUCCESS;
} else {
return PSA_ERROR_INVALID_ARGUMENT;