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Test slot_number attribute

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Test the behavior of the getter/setter functions.

Test that psa_get_key_slot_number() reports a slot number for a key in
a secure element, and doesn't report a slot number for a key that is
not in a secure element.

Test that psa_get_key_slot_number() reports the correct slot number
for a key in a secure element.
This commit is contained in:
Gilles Peskine 2019-08-02 20:30:01 +02:00
parent c8000c005a
commit 5fe5e27591
4 changed files with 105 additions and 1 deletions
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12
include/psa/crypto_extra.h
View file

@ -163,6 +163,18 @@ static inline void psa_set_key_slot_number(
attributes->slot_number = slot_number;
}
/** Remove the slot number attribute from a key attribute structure.
*
* This function undoes the action of psa_set_key_slot_number().
*
* \param[out] attributes The attribute structure to write to.
*/
static inline void psa_clear_key_slot_number(
psa_key_attributes_t *attributes )
{
attributes->core.flags &= ~MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER;
}
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
/**@}*/

3
tests/suites/test_suite_psa_crypto.data
View file

@ -19,6 +19,9 @@ persistence_attributes:0x1234:3:-1:0x1234:3
PSA key attributes: lifetime then id
persistence_attributes:0x1234:3:0x1235:0x1235:3
PSA key attributes: slot number
slot_number_attribute:
PSA import/export raw: 0 bytes
import_export:"":PSA_KEY_TYPE_RAW_DATA:PSA_KEY_USAGE_EXPORT:0:0:0:PSA_SUCCESS:1

61
tests/suites/test_suite_psa_crypto.function
View file

@ -1113,6 +1113,23 @@ exit:
return( ok );
}
/* Assert that a key isn't reported as having a slot number. */
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
#define ASSERT_NO_SLOT_NUMBER( attributes ) \
do \
{ \
psa_key_slot_number_t ASSERT_NO_SLOT_NUMBER_slot_number; \
TEST_EQUAL( psa_get_key_slot_number( \
attributes, \
&ASSERT_NO_SLOT_NUMBER_slot_number ), \
PSA_ERROR_INVALID_ARGUMENT ); \
} \
while( 0 )
#else /* MBEDTLS_PSA_CRYPTO_SE_C */
#define ASSERT_NO_SLOT_NUMBER( attributes ) \
( (void) 0 )
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
/* An overapproximation of the amount of storage needed for a key of the
* given type and with the given content. The API doesn't make it easy
* to find a good value for the size. The current implementation doesn't
@ -1214,6 +1231,46 @@ void persistence_attributes( int id1_arg, int lifetime_arg, int id2_arg,
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_SE_C */
void slot_number_attribute( )
{
psa_key_slot_number_t slot_number = 0xdeadbeef;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
/* Initially, there is no slot number. */
TEST_EQUAL( psa_get_key_slot_number( &attributes, &slot_number ),
PSA_ERROR_INVALID_ARGUMENT );
/* Test setting a slot number. */
psa_set_key_slot_number( &attributes, 0 );
PSA_ASSERT( psa_get_key_slot_number( &attributes, &slot_number ) );
TEST_EQUAL( slot_number, 0 );
/* Test changing the slot number. */
psa_set_key_slot_number( &attributes, 42 );
PSA_ASSERT( psa_get_key_slot_number( &attributes, &slot_number ) );
TEST_EQUAL( slot_number, 42 );
/* Test clearing the slot number. */
psa_clear_key_slot_number( &attributes );
TEST_EQUAL( psa_get_key_slot_number( &attributes, &slot_number ),
PSA_ERROR_INVALID_ARGUMENT );
/* Clearing again should have no effect. */
psa_clear_key_slot_number( &attributes );
TEST_EQUAL( psa_get_key_slot_number( &attributes, &slot_number ),
PSA_ERROR_INVALID_ARGUMENT );
/* Test that reset clears the slot number. */
psa_set_key_slot_number( &attributes, 42 );
PSA_ASSERT( psa_get_key_slot_number( &attributes, &slot_number ) );
TEST_EQUAL( slot_number, 42 );
psa_reset_key_attributes( &attributes );
TEST_EQUAL( psa_get_key_slot_number( &attributes, &slot_number ),
PSA_ERROR_INVALID_ARGUMENT );
}
/* END_CASE */
/* BEGIN_CASE */
void import_with_policy( int type_arg,
int usage_arg, int alg_arg,
@ -1246,6 +1303,7 @@ void import_with_policy( int type_arg,
TEST_EQUAL( psa_get_key_type( &got_attributes ), type );
TEST_EQUAL( psa_get_key_usage_flags( &got_attributes ), usage );
TEST_EQUAL( psa_get_key_algorithm( &got_attributes ), alg );
ASSERT_NO_SLOT_NUMBER( &got_attributes );
PSA_ASSERT( psa_destroy_key( handle ) );
test_operations_on_invalid_handle( handle );
@ -1284,6 +1342,7 @@ void import_with_data( data_t *data, int type_arg,
TEST_EQUAL( psa_get_key_type( &got_attributes ), type );
if( attr_bits != 0 )
TEST_EQUAL( attr_bits, psa_get_key_bits( &got_attributes ) );
ASSERT_NO_SLOT_NUMBER( &got_attributes );
PSA_ASSERT( psa_destroy_key( handle ) );
test_operations_on_invalid_handle( handle );
@ -1328,6 +1387,7 @@ void import_large_key( int type_arg, int byte_size_arg,
TEST_EQUAL( psa_get_key_type( &attributes ), type );
TEST_EQUAL( psa_get_key_bits( &attributes ),
PSA_BYTES_TO_BITS( byte_size ) );
ASSERT_NO_SLOT_NUMBER( &attributes );
memset( buffer, 0, byte_size + 1 );
PSA_ASSERT( psa_export_key( handle, buffer, byte_size, &n ) );
for( n = 0; n < byte_size; n++ )
@ -1420,6 +1480,7 @@ void import_export( data_t *data,
PSA_ASSERT( psa_get_key_attributes( handle, &got_attributes ) );
TEST_EQUAL( psa_get_key_type( &got_attributes ), type );
TEST_EQUAL( psa_get_key_bits( &got_attributes ), (size_t) expected_bits );
ASSERT_NO_SLOT_NUMBER( &got_attributes );
/* Export the key */
status = psa_export_key( handle,

30
tests/suites/test_suite_psa_crypto_se_driver_hal.function
View file

@ -212,6 +212,31 @@ static int check_key_attributes(
psa_get_key_bits( reference_attributes ) );
}
{
psa_key_slot_number_t actual_slot_number = 0xdeadbeef;
psa_key_slot_number_t desired_slot_number = 0xb90cc011;
psa_key_lifetime_t lifetime =
psa_get_key_lifetime( &actual_attributes );
psa_status_t status = psa_get_key_slot_number( &actual_attributes,
&actual_slot_number );
if( lifetime < MIN_DRIVER_LIFETIME )
{
/* The key is not in a secure element. */
TEST_EQUAL( status, PSA_ERROR_INVALID_ARGUMENT );
}
else
{
/* The key is in a secure element. If it had been created
* in a specific slot, check that it is reported there. */
PSA_ASSERT( status );
status = psa_get_key_slot_number( reference_attributes,
&desired_slot_number );
if( status == PSA_SUCCESS )
{
TEST_EQUAL( desired_slot_number, actual_slot_number );
}
}
}
ok = 1;
exit:
@ -485,11 +510,14 @@ void key_creation_import_export( int min_slot, int restart )
/* Test that the key was created in the expected slot. */
TEST_ASSERT( ram_slots[min_slot].type == PSA_KEY_TYPE_RAW_DATA );
/* Test the key attributes and the key data. */
/* Test the key attributes, including the reported slot number. */
psa_set_key_bits( &attributes,
PSA_BYTES_TO_BITS( sizeof( key_material ) ) );
psa_set_key_slot_number( &attributes, min_slot );
if( ! check_key_attributes( handle, &attributes ) )
goto exit;
/* Test the key data. */
PSA_ASSERT( psa_export_key( handle,
exported, sizeof( exported ),
&exported_length ) );