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initial key lifetime implementation and tests

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mohammad1603 2018-03-20 22:44:08 +02:00 committed by itayzafrir
parent 47c1bc0458
commit 804cd71bf8
4 changed files with 172 additions and 4 deletions
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41
include/psa/crypto.h
View file

@ -89,6 +89,10 @@ typedef enum {
PSA_ERROR_INVALID_SIGNATURE,
/** The decrypted padding is incorrect. */
PSA_ERROR_INVALID_PADDING,
/** The key lifetime value is incorrect. */
PSA_ERROR_INVALID_LIFETIME,
/** The key lifetime can not be changed. */
PSA_ERROR_KEY_LIFETIME_CHANGE,
/** An error occurred that does not correspond to any defined
failure cause. */
PSA_ERROR_UNKNOWN_ERROR,
@ -596,18 +600,47 @@ typedef uint32_t psa_key_lifetime_t;
/** \brief Retrieve the lifetime of a key slot.
*
* The assignment of lifetimes to slots is implementation-dependent.
*
* \param key Slot whose content is to be exported. This must
* be an occupied key slot.
* \param lifetime On success, the lifetime value.
*
* \retval PSA_SUCCESS
* Success.
* \retval PSA_ERROR_INVALID_ARGUMENT
* The key slot is invalid,
* or the key data is not correctly formatted.
* \retval PSA_ERROR_EMPTY_SLOT
* The key slot is not occupied.
*/
psa_status_t psa_get_key_lifetime(psa_key_slot_t key,
psa_key_lifetime_t *lifetime);
/** \brief Change the lifetime of a key slot.
*
* \note In case a key slot has PSA_KEY_LIFETIME_WRITE_ONCE lifetime,
* it can not be changed and trying to set new value will return
* an error
*
* Whether the lifetime of a key slot can be changed at all, and if so
* whether the lifetime of an occupied key slot can be changed, is
* implementation-dependent.
* \param key Slot whose content is to be exported. This must
* be an occupied key slot.
* \param lifetime The lifetime value to be set for the given key.
*
* \retval PSA_SUCCESS
* Success.
* \retval PSA_ERROR_INVALID_ARGUMENT
* The key slot is invalid,
* or the key data is not correctly formatted.
* \retval PSA_ERROR_EMPTY_SLOT
* The key slot is not occupied.
* \retval PSA_ERROR_INVALID_LIFETIME
* The lifetime value is not valid.
* \retval PSA_ERROR_KEY_LIFETIME_CHANGE
* The key slot already has PSA_KEY_LIFETIME_WRITE_ONCE value,
* and can not be changed.
*/
psa_status_t psa_set_key_lifetime(psa_key_slot_t key,
const psa_key_lifetime_t *lifetime);
const psa_key_lifetime_t lifetime);
/**@}*/

49
library/psa_crypto.c
View file

@ -96,6 +96,7 @@ static inline int safer_memcmp( const uint8_t *a, const uint8_t *b, size_t n )
typedef struct {
psa_key_type_t type;
psa_key_lifetime_t lifetime;
union {
struct raw_data {
uint8_t *data;
@ -362,6 +363,7 @@ psa_status_t psa_import_key(psa_key_slot_t key,
}
slot->type = type;
slot->lifetime = 0;
return( PSA_SUCCESS );
}
@ -1260,6 +1262,53 @@ psa_status_t psa_asymmetric_sign(psa_key_slot_t key,
}
/****************************************************************/
/* Key Lifetime */
/****************************************************************/
psa_status_t psa_get_key_lifetime(psa_key_slot_t key,
psa_key_lifetime_t *lifetime)
{
key_slot_t *slot;
if( key == 0 || key > MBEDTLS_PSA_KEY_SLOT_COUNT )
return( PSA_ERROR_INVALID_ARGUMENT );
slot = &global_data.key_slots[key];
if( slot->type == PSA_KEY_TYPE_NONE )
return( PSA_ERROR_EMPTY_SLOT );
*lifetime = slot->lifetime;
return( PSA_SUCCESS );
}
psa_status_t psa_set_key_lifetime(psa_key_slot_t key,
const psa_key_lifetime_t lifetime)
{
key_slot_t *slot;
if( key == 0 || key > MBEDTLS_PSA_KEY_SLOT_COUNT )
return( PSA_ERROR_INVALID_ARGUMENT );
slot = &global_data.key_slots[key];
if( slot->type == PSA_KEY_TYPE_NONE )
return( PSA_ERROR_EMPTY_SLOT );
if( lifetime != PSA_KEY_LIFETIME_VOLATILE &&
lifetime != PSA_KEY_LIFETIME_PERSISTENT &&
lifetime != PSA_KEY_LIFETIME_WRITE_ONCE)
return( PSA_ERROR_INVALID_LIFETIME );
if ( slot->lifetime == PSA_KEY_LIFETIME_WRITE_ONCE )
return( PSA_ERROR_KEY_LIFETIME_CHANGE );
slot->lifetime = liftime;
return( PSA_SUCCESS );
}
/****************************************************************/
/* Module setup */

21
tests/suites/test_suite_psa_crypto.data
View file

@ -83,3 +83,24 @@ sign_fail:PSA_KEY_TYPE_RSA_KEYPAIR:"3082025e02010002818100af057d396ee84fb75fdbb5
PSA sign RSA PKCS#1 v1.5 SHA-256, output buffer too small
sign_fail:PSA_KEY_TYPE_RSA_KEYPAIR:"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":PSA_ALG_RSA_PKCS1V15(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad":127:PSA_ERROR_BUFFER_TOO_SMALL
PSA Key Lifetime set and get volatile
key_lifetime:PSA_KEY_LIFETIME_VOLATILE
PSA Key Lifetime set and get persistent
key_lifetime:PSA_KEY_LIFETIME_PERSISTENT
PSA Key Lifetime set and get write_once
key_lifetime:PSA_KEY_LIFETIME_WRITE_ONCE
PSA Key Lifetime set fail, invalid key slot
key_lifetime_set_fail:0:PSA_KEY_LIFETIME_VOLATILE:PSA_ERROR_INVALID_ARGUMENT
PSA Key Lifetime set fail, unoccupied key slot
key_lifetime_set_fail:2:PSA_KEY_LIFETIME_VOLATILE:PSA_ERROR_EMPTY_SLOT
PSA Key Lifetime set fail, can not change write_once lifetime
key_lifetime_set_fail:1:PSA_KEY_LIFETIME_WRITE_ONCE:PSA_ERROR_KEY_LIFETIME_CHANGE
PSA Key Lifetime set fail, invalid key lifetime value
key_lifetime_set_fail:1:PSA_KEY_LIFETIME_PERSISTENT+1:PSA_ERROR_INVALID_LIFETIME

65
tests/suites/test_suite_psa_crypto.function
View file

@ -360,3 +360,68 @@ exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void key_lifetime( int lifetime_arg )
{
int key_slot = 1;
psa_key_type_t key_type = PSA_ALG_CBC_BASE;
unsigned char key[32] = {0};
psa_key_lifetime_t lifetime_set = (psa_key_lifetime_t) lifetime_arg;
psa_key_lifetime_t lifetime_get;
TEST_ASSERT( key != NULL );
memset( key, 0x2a, sizeof( key ) );
TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
TEST_ASSERT( psa_import_key( key_slot, key_type,
key, sizeof( key ) ) == PSA_SUCCESS );
TEST_ASSERT( psa_set_key_lifetime( key_slot, lifetime_set ));
TEST_ASSERT( psa_get_key_lifetime( key_slot, &lifetime_get ));
TEST_ASSERT( lifetime_get == lifetime_set );
exit:
mbedtls_free( key );
psa_destroy_key( key_slot );
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void key_lifetime_set_fail( int key_slot_arg, int lifetime_arg, int expected_status_arg )
{
int key_slot = 1;
psa_key_type_t key_type = PSA_ALG_CBC_BASE;
unsigned char key[32] = {0};
psa_key_lifetime_t lifetime_set = (psa_key_lifetime_t) lifetime_arg;
psa_status_t actual_status;
psa_status_t expected_status = expected_status_arg;
TEST_ASSERT( key != NULL );
memset( key, 0x2a, sizeof( key ) );
TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
TEST_ASSERT( psa_import_key( key_slot, key_type,
key, sizeof( key ) ) == PSA_SUCCESS );
actual_status = psa_set_key_lifetime( key_slot_arg, lifetime_set );
if( actual_status == PSA_SUCCESS )
actual_status = psa_set_key_lifetime( key_slot_arg, lifetime_set );
TEST_ASSERT( expected_status == actual_status );
exit:
mbedtls_free( key );
psa_destroy_key( key_slot );
mbedtls_psa_crypto_free( );
}
/* END_CASE */