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Add Tests for psa crypto entropy incjection

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Adjust code to handle and work with MBEDTLS_ENTROPY_BLOCK_SIZE definition option
This commit is contained in:
Netanel Gonen 2018-11-19 11:53:55 +02:00 committed by avolinski
parent ee2ffd311b
commit 21f37cbbec
5 changed files with 23 additions and 13 deletions
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6
include/psa/crypto_extra.h
View File

@ -91,8 +91,10 @@ void mbedtls_psa_crypto_free( void );
*
* \param seed[in] Buffer containing the seed value to inject.
* \param seed_size Size of the \p seed buffer.
* The size of the seed must be
* at least #MBEDTLS_ENTROPY_MIN_PLATFORM bytes
* The size of the seed must be equal or larger than any
* of the values defined both in
* #MBEDTLS_ENTROPY_MIN_PLATFORM
* and in the #MBEDTLS_ENTROPY_BLOCK_SIZE defines
* and at most #MBEDTLS_ENTROPY_MAX_SEED_SIZE bytes.
*
* \retval #PSA_SUCCESS

8
library/psa_crypto.c
View File

@ -4234,8 +4234,12 @@ psa_status_t mbedtls_psa_inject_entropy( const unsigned char *seed,
struct psa_its_info_t p_info;
if( global_data.initialized )
return( PSA_ERROR_NOT_PERMITTED );
if( ( seed_size < MBEDTLS_ENTROPY_MIN_PLATFORM ) || ( seed_size > MBEDTLS_ENTROPY_MAX_SEED_SIZE ) )
return( PSA_ERROR_INVALID_ARGUMENT );
if( ( ( seed_size < MBEDTLS_ENTROPY_MIN_PLATFORM ) ||
( seed_size < MBEDTLS_ENTROPY_BLOCK_SIZE ) ) ||
( seed_size > MBEDTLS_ENTROPY_MAX_SEED_SIZE ) )
return( PSA_ERROR_INVALID_ARGUMENT );
status = psa_its_get_info( MBED_RANDOM_SEED_ITS_UID, &p_info );
if( PSA_ITS_ERROR_KEY_NOT_FOUND == status ) /* No seed exists */
{

3
library/version_features.c
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@ -402,6 +402,9 @@ static const char *features[] = {
#if defined(MBEDTLS_ENTROPY_NV_SEED)
"MBEDTLS_ENTROPY_NV_SEED",
#endif /* MBEDTLS_ENTROPY_NV_SEED */
#if defined(MBEDTLS_PSA_HAS_ITS_IO)
"MBEDTLS_PSA_HAS_ITS_IO",
#endif /* MBEDTLS_PSA_HAS_ITS_IO */
#if defined(MBEDTLS_MEMORY_DEBUG)
"MBEDTLS_MEMORY_DEBUG",
#endif /* MBEDTLS_MEMORY_DEBUG */

7
tests/suites/test_suite_psa_crypto_entropy.data
View File

@ -1,14 +1,15 @@
PSA validate entropy injection: good, minimum size
validate_entropy_seed_injection:MBEDTLS_ENTROPY_MIN_PLATFORM:PSA_SUCCESS:MBEDTLS_ENTROPY_MIN_PLATFORM:PSA_ERROR_NOT_PERMITTED
validate_entropy_seed_injection:MBEDTLS_ENTROPY_BLOCK_SIZE:PSA_SUCCESS:MBEDTLS_ENTROPY_BLOCK_SIZE:PSA_ERROR_NOT_PERMITTED
PSA validate entropy injection: good, max size
validate_entropy_seed_injection:MBEDTLS_ENTROPY_MAX_SEED_SIZE:PSA_SUCCESS:MBEDTLS_ENTROPY_MAX_SEED_SIZE:PSA_ERROR_NOT_PERMITTED
PSA validate entropy injection: bad, too big
validate_entropy_seed_injection:MBEDTLS_ENTROPY_MAX_SEED_SIZE+1:PSA_ERROR_INVALID_ARGUMENT:MBEDTLS_ENTROPY_MIN_PLATFORM:PSA_SUCCESS
validate_entropy_seed_injection:MBEDTLS_ENTROPY_MAX_SEED_SIZE+1:PSA_ERROR_INVALID_ARGUMENT:MBEDTLS_ENTROPY_BLOCK_SIZE:PSA_SUCCESS
PSA validate entropy injection: bad, too small
validate_entropy_seed_injection:MBEDTLS_ENTROPY_MIN_PLATFORM-1:PSA_ERROR_INVALID_ARGUMENT:MBEDTLS_ENTROPY_MIN_PLATFORM:PSA_SUCCESS
validate_entropy_seed_injection:MBEDTLS_ENTROPY_BLOCK_SIZE-1:PSA_ERROR_INVALID_ARGUMENT:MBEDTLS_ENTROPY_BLOCK_SIZE:PSA_SUCCESS
PSA validate entropy injection: before and after crypto_init
run_entropy_inject_with_crypto_init:

10
tests/suites/test_suite_psa_crypto_entropy.function
View File

@ -62,24 +62,24 @@ void run_entropy_inject_with_crypto_init( )
psa_its_status_t its_status;
psa_status_t status;
int i;
uint8_t seed[MBEDTLS_ENTROPY_MIN_PLATFORM] = {0};
uint8_t seed[MBEDTLS_ENTROPY_BLOCK_SIZE] = {0};
/* fill seed in some data */
for( i = 0; i < MBEDTLS_ENTROPY_MIN_PLATFORM; ++i)
for( i = 0; i < MBEDTLS_ENTROPY_BLOCK_SIZE; ++i)
{
seed[i] = i;
}
its_status = psa_its_remove(MBED_RANDOM_SEED_ITS_UID);
TEST_ASSERT( (its_status == PSA_ITS_SUCCESS) || (its_status == PSA_ITS_ERROR_KEY_NOT_FOUND) );
status = mbedtls_psa_inject_entropy( seed, MBEDTLS_ENTROPY_MIN_PLATFORM );
status = mbedtls_psa_inject_entropy( seed, MBEDTLS_ENTROPY_BLOCK_SIZE );
TEST_ASSERT( status == PSA_SUCCESS );
its_status = psa_its_remove(MBED_RANDOM_SEED_ITS_UID);
TEST_ASSERT( its_status == PSA_ITS_SUCCESS );
TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
status = mbedtls_psa_inject_entropy( seed, MBEDTLS_ENTROPY_MIN_PLATFORM );
status = mbedtls_psa_inject_entropy( seed, MBEDTLS_ENTROPY_BLOCK_SIZE );
TEST_ASSERT( status == PSA_ERROR_NOT_PERMITTED );
mbedtls_psa_crypto_free( );
/* The seed is written by nv_seed callback functions therefore the injection will fail */
status = mbedtls_psa_inject_entropy( seed, MBEDTLS_ENTROPY_MIN_PLATFORM );
status = mbedtls_psa_inject_entropy( seed, MBEDTLS_ENTROPY_BLOCK_SIZE );
TEST_ASSERT( status == PSA_ERROR_NOT_PERMITTED );
exit:
psa_its_remove(MBED_RANDOM_SEED_ITS_UID);