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Remove PSA_KEY_TYPE_IS_RAW_BYTES from crypto.h

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It isn't used to define other macros and it doesn't seem that useful
for users. Remove it, we can reintroduce it if needed.

Define a similar function key_type_is_raw_bytes in the implementation
with a clear semantics: it's a key that's represented as a struct
raw_data.
This commit is contained in:
Gilles Peskine 2018-06-21 14:15:31 +02:00 committed by itayzafrir
parent a50d7396f3
commit 48c0ea14c6
3 changed files with 20 additions and 9 deletions
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3
include/psa/crypto.h
View file

@ -366,9 +366,6 @@ typedef uint32_t psa_key_type_t;
/** Whether a key type is vendor-defined. */
#define PSA_KEY_TYPE_IS_VENDOR_DEFINED(type) \
(((type) & PSA_KEY_TYPE_VENDOR_FLAG) != 0)
#define PSA_KEY_TYPE_IS_RAW_BYTES(type) \
(((type) & PSA_KEY_TYPE_CATEGORY_MASK) == PSA_KEY_TYPE_RAW_DATA || \
((type) & PSA_KEY_TYPE_CATEGORY_MASK) == PSA_KEY_TYPE_CATEGORY_SYMMETRIC)
/** Whether a key type is asymmetric: either a key pair or a public key. */
#define PSA_KEY_TYPE_IS_ASYMMETRIC(type) \

17
library/psa_crypto.c
View file

@ -116,6 +116,13 @@ typedef struct
} data;
} key_slot_t;
static int key_type_is_raw_bytes( psa_key_type_t type )
{
psa_key_type_t category = type & PSA_KEY_TYPE_CATEGORY_MASK;
return( category == PSA_KEY_TYPE_RAW_DATA ||
category == PSA_KEY_TYPE_CATEGORY_SYMMETRIC );
}
typedef struct
{
int initialized;
@ -459,7 +466,7 @@ psa_status_t psa_import_key( psa_key_slot_t key,
if( slot->type != PSA_KEY_TYPE_NONE )
return( PSA_ERROR_OCCUPIED_SLOT );
if( PSA_KEY_TYPE_IS_RAW_BYTES( type ) )
if( key_type_is_raw_bytes( type ) )
{
psa_status_t status;
/* Ensure that a bytes-to-bit conversion won't overflow. */
@ -541,7 +548,7 @@ psa_status_t psa_destroy_key( psa_key_slot_t key )
/* No key material to clean, but do zeroize the slot below to wipe
* metadata such as policies. */
}
else if( PSA_KEY_TYPE_IS_RAW_BYTES( slot->type ) )
else if( key_type_is_raw_bytes( slot->type ) )
{
mbedtls_free( slot->data.raw.data );
}
@ -589,7 +596,7 @@ psa_status_t psa_get_key_information( psa_key_slot_t key,
if( slot->type == PSA_KEY_TYPE_NONE )
return( PSA_ERROR_EMPTY_SLOT );
if( PSA_KEY_TYPE_IS_RAW_BYTES( slot->type ) )
if( key_type_is_raw_bytes( slot->type ) )
{
if( bits != NULL )
*bits = slot->data.raw.bytes * 8;
@ -643,7 +650,7 @@ static psa_status_t psa_internal_export_key( psa_key_slot_t key,
( slot->policy.usage & PSA_KEY_USAGE_EXPORT ) == 0 )
return( PSA_ERROR_NOT_PERMITTED );
if( PSA_KEY_TYPE_IS_RAW_BYTES( slot->type ) )
if( key_type_is_raw_bytes( slot->type ) )
{
if( slot->data.raw.bytes > data_size )
return( PSA_ERROR_BUFFER_TOO_SMALL );
@ -2632,7 +2639,7 @@ psa_status_t psa_generate_key( psa_key_slot_t key,
if( parameters == NULL && parameters_size != 0 )
return( PSA_ERROR_INVALID_ARGUMENT );
if( PSA_KEY_TYPE_IS_RAW_BYTES( type ) )
if( key_type_is_raw_bytes( type ) )
{
psa_status_t status = prepare_raw_data_slot( type, bits,
&slot->data.raw );

9
tests/suites/test_suite_psa_crypto.function
View file

@ -27,6 +27,13 @@ static int mem_is_zero( void *buffer, size_t size )
return( 1 );
}
static int key_type_is_raw_bytes( psa_key_type_t type )
{
psa_key_type_t category = type & PSA_KEY_TYPE_CATEGORY_MASK;
return( category == PSA_KEY_TYPE_RAW_DATA ||
category == PSA_KEY_TYPE_CATEGORY_SYMMETRIC );
}
static int exercise_mac_key( psa_key_slot_t key,
psa_key_usage_t usage,
psa_algorithm_t alg )
@ -1967,7 +1974,7 @@ void generate_key( int type_arg,
&exported_length ) == expected_export_status );
if( expected_export_status == PSA_SUCCESS )
{
if( PSA_KEY_TYPE_IS_RAW_BYTES( type ) )
if( key_type_is_raw_bytes( type ) )
TEST_ASSERT( exported_length == ( bits + 7 ) / 8 );
#if defined(MBEDTLS_DES_C)
if( type == PSA_KEY_TYPE_DES )