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Pass the key creation method to drivers

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Pass the key creation method (import/generate/derive/copy) to the
driver methods to allocate or validate a slot number. This allows
drivers to enforce policies such as "this key slot can only be used
for keys generated inside the secure element".
This commit is contained in:
Gilles Peskine
2019-08-05 16:44:14 +02:00
parent df17914e01
commit e88c2c1338
5 changed files with 47 additions and 24 deletions
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12
library/psa_crypto.c
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@ -1506,16 +1506,6 @@ static psa_status_t psa_validate_key_attributes(
return( PSA_SUCCESS );
}
/** An enumeration indicating how a key is created.
*/
typedef enum
{
PSA_KEY_CREATION_IMPORT,
PSA_KEY_CREATION_GENERATE,
PSA_KEY_CREATION_DERIVE,
PSA_KEY_CREATION_COPY,
} psa_key_creation_method_t;
/** Prepare a key slot to receive key material.
*
* This function allocates a key slot and sets its metadata.
@ -1595,7 +1585,7 @@ static psa_status_t psa_start_key_creation(
* we can roll back to a state where the key doesn't exist. */
if( *p_drv != NULL )
{
status = psa_find_se_slot_for_key( attributes, *p_drv,
status = psa_find_se_slot_for_key( attributes, method, *p_drv,
&slot->data.se.slot_number );
if( status != PSA_SUCCESS )
return( status );