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Merge pull request #3611 from gilles-peskine-arm/psa-coverity-cleanups-202008

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Minor fixes in PSA code and tests
This commit is contained in:
Gilles Peskine 2020-08-26 13:18:27 +02:00 committed by GitHub
commit d4b9133850
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7 changed files with 63 additions and 11 deletions
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8
library/psa_crypto_storage.c
View File

@ -174,7 +174,13 @@ static psa_status_t psa_crypto_storage_store( const psa_key_file_id_t key,
exit:
if( status != PSA_SUCCESS )
psa_its_remove( data_identifier );
{
/* Remove the file in case we managed to create it but something
* went wrong. It's ok if the file doesn't exist. If the file exists
* but the removal fails, we're already reporting an error so there's
* nothing else we can do. */
(void) psa_its_remove( data_identifier );
}
return( status );
}

7
library/psa_its_file.c
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@ -233,7 +233,12 @@ exit:
if( rename_replace_existing( PSA_ITS_STORAGE_TEMP, filename ) != 0 )
status = PSA_ERROR_STORAGE_FAILURE;
}
remove( PSA_ITS_STORAGE_TEMP );
/* The temporary file may still exist, but only in failure cases where
* we're already reporting an error. So there's nothing we can do on
* failure. If the function succeeded, and in some error cases, the
* temporary file doesn't exist and so remove() is expected to fail.
* Thus we just ignore the return status of remove(). */
(void) remove( PSA_ITS_STORAGE_TEMP );
return( status );
}

8
tests/suites/test_suite_psa_crypto.data
View File

@ -799,6 +799,10 @@ hash_compute_fail:PSA_ALG_ANY_HASH:"":32:PSA_ERROR_NOT_SUPPORTED
PSA hash compute: bad algorithm (not a hash)
hash_compute_fail:PSA_ALG_HMAC(PSA_ALG_SHA_256):"":32:PSA_ERROR_INVALID_ARGUMENT
PSA hash compute: output buffer empty
depends_on:MBEDTLS_SHA256_C
hash_compute_fail:PSA_ALG_SHA_256:"":0:PSA_ERROR_BUFFER_TOO_SMALL
PSA hash compute: output buffer too small
depends_on:MBEDTLS_SHA256_C
hash_compute_fail:PSA_ALG_SHA_256:"":31:PSA_ERROR_BUFFER_TOO_SMALL
@ -828,6 +832,10 @@ PSA hash compare: truncated hash
depends_on:MBEDTLS_SHA256_C
hash_compare_fail:PSA_ALG_SHA_256:"":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b8":PSA_ERROR_INVALID_SIGNATURE
PSA hash compare: empty hash
depends_on:MBEDTLS_SHA256_C
hash_compare_fail:PSA_ALG_SHA_256:"":"":PSA_ERROR_INVALID_SIGNATURE
PSA hash compare: good
depends_on:MBEDTLS_SHA256_C
hash_compare_fail:PSA_ALG_SHA_256:"":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855":PSA_SUCCESS

14
tests/suites/test_suite_psa_crypto.function
View File

@ -3083,6 +3083,7 @@ void mac_sign( int key_type_arg,
}
exit:
psa_mac_abort( &operation );
psa_destroy_key( handle );
PSA_DONE( );
mbedtls_free( actual_mac );
@ -3161,6 +3162,7 @@ void mac_verify( int key_type_arg,
}
exit:
psa_mac_abort( &operation );
psa_destroy_key( handle );
PSA_DONE( );
mbedtls_free( perturbed_mac );
@ -3241,6 +3243,7 @@ void cipher_setup( int key_type_arg,
#endif
exit:
psa_cipher_abort( &operation );
PSA_DONE( );
}
/* END_CASE */
@ -3393,6 +3396,7 @@ void cipher_bad_order( )
PSA_ASSERT( psa_destroy_key( handle ) );
exit:
psa_cipher_abort( &operation );
PSA_DONE( );
}
/* END_CASE */
@ -3451,6 +3455,7 @@ void cipher_encrypt( int alg_arg, int key_type_arg,
}
exit:
psa_cipher_abort( &operation );
mbedtls_free( output );
psa_destroy_key( handle );
PSA_DONE( );
@ -3519,6 +3524,7 @@ void cipher_encrypt_multipart( int alg_arg, int key_type_arg,
output, total_output_length );
exit:
psa_cipher_abort( &operation );
mbedtls_free( output );
psa_destroy_key( handle );
PSA_DONE( );
@ -3590,6 +3596,7 @@ void cipher_decrypt_multipart( int alg_arg, int key_type_arg,
output, total_output_length );
exit:
psa_cipher_abort( &operation );
mbedtls_free( output );
psa_destroy_key( handle );
PSA_DONE( );
@ -3651,6 +3658,7 @@ void cipher_decrypt( int alg_arg, int key_type_arg,
}
exit:
psa_cipher_abort( &operation );
mbedtls_free( output );
psa_destroy_key( handle );
PSA_DONE( );
@ -3732,6 +3740,8 @@ void cipher_verify_output( int alg_arg, int key_type_arg,
ASSERT_COMPARE( input->x, input->len, output2, output2_length );
exit:
psa_cipher_abort( &operation1 );
psa_cipher_abort( &operation2 );
mbedtls_free( output1 );
mbedtls_free( output2 );
psa_destroy_key( handle );
@ -3835,6 +3845,8 @@ void cipher_verify_output_multipart( int alg_arg,
ASSERT_COMPARE( input->x, input->len, output2, output2_length );
exit:
psa_cipher_abort( &operation1 );
psa_cipher_abort( &operation2 );
mbedtls_free( output1 );
mbedtls_free( output2 );
psa_destroy_key( handle );
@ -5697,7 +5709,7 @@ exit:
/* In case there was a test failure after creating the persistent key
* but while it was not open, try to re-open the persistent key
* to delete it. */
psa_open_key( key_id, &handle );
(void) psa_open_key( key_id, &handle );
}
psa_destroy_key( handle );
PSA_DONE();

4
tests/suites/test_suite_psa_crypto_hash.function
View File

@ -31,6 +31,7 @@ void hash_finish( int alg_arg, data_t *input, data_t *expected_hash )
actual_hash, actual_hash_length );
exit:
psa_hash_abort( &operation );
PSA_DONE( );
}
/* END_CASE */
@ -52,6 +53,7 @@ void hash_verify( int alg_arg, data_t *input, data_t *expected_hash )
expected_hash->len ) );
exit:
psa_hash_abort( &operation );
PSA_DONE( );
}
/* END_CASE */
@ -95,6 +97,8 @@ void hash_multi_part( int alg_arg, data_t *input, data_t *expected_hash )
} while( len++ != input->len );
exit:
psa_hash_abort( &operation );
psa_hash_abort( &operation2 );
PSA_DONE( );
}
/* END_CASE */

20
tests/suites/test_suite_psa_crypto_metadata.function
View File

@ -57,8 +57,18 @@
TEST_ASSERT( PSA_##flag( alg ) == !! ( ( flags ) & flag ) )
/* Check the parity of value.
* Return 0 if value has even parity and a nonzero value otherwise. */
int test_parity( uint32_t value )
*
* There are several numerical encodings for which the PSA Cryptography API
* specification deliberately defines encodings that all have the same
* parity. This way, a data glitch that flips one bit in the data cannot
* possibly turn a valid encoding into another valid encoding. Here in
* the tests, we check that the values (including Mbed TLS vendor-specific
* values) have the expected parity.
*
* The expected parity is even so that 0 is considered a valid encoding.
*
* Return a nonzero value if value has even parity and 0 otherwise. */
int has_even_parity( uint32_t value )
{
value ^= value >> 16;
value ^= value >> 8;
@ -66,7 +76,7 @@ int test_parity( uint32_t value )
return( 0x9669 & 1 << ( value & 0xf ) );
}
#define TEST_PARITY( value ) \
TEST_ASSERT( test_parity( value ) )
TEST_ASSERT( has_even_parity( value ) )
void algorithm_classification( psa_algorithm_t alg, unsigned flags )
{
@ -497,7 +507,7 @@ void ecc_key_family( int curve_arg )
psa_key_type_t public_type = PSA_KEY_TYPE_ECC_PUBLIC_KEY( curve );
psa_key_type_t pair_type = PSA_KEY_TYPE_ECC_KEY_PAIR( curve );
test_parity( curve );
TEST_PARITY( curve );
test_key_type( public_type, KEY_TYPE_IS_ECC | KEY_TYPE_IS_PUBLIC_KEY );
test_key_type( pair_type, KEY_TYPE_IS_ECC | KEY_TYPE_IS_KEY_PAIR );
@ -514,7 +524,7 @@ void dh_key_family( int group_arg )
psa_key_type_t public_type = PSA_KEY_TYPE_DH_PUBLIC_KEY( group );
psa_key_type_t pair_type = PSA_KEY_TYPE_DH_KEY_PAIR( group );
test_parity( group );
TEST_PARITY( group );
test_key_type( public_type, KEY_TYPE_IS_DH | KEY_TYPE_IS_PUBLIC_KEY );
test_key_type( pair_type, KEY_TYPE_IS_DH | KEY_TYPE_IS_KEY_PAIR );

13
tests/suites/test_suite_psa_its.function
View File

@ -40,16 +40,23 @@ static psa_storage_uid_t uid_max = 0;
static void cleanup( void )
{
/* Call remove() on all the files that a test might have created.
* We ignore the error if the file exists but remove() fails because
* it can't be checked portably (except by attempting to open the file
* first, which is needlessly slow and complicated here). A failure of
* remove() on an existing file is very unlikely anyway and would not
* have significant consequences other than perhaps failing the next
* test case. */
char filename[PSA_ITS_STORAGE_FILENAME_LENGTH];
psa_storage_uid_t uid;
for( uid = 0; uid < uid_max; uid++ )
{
psa_its_fill_filename( uid, filename );
remove( filename );
(void) remove( filename );
}
psa_its_fill_filename( (psa_storage_uid_t)( -1 ), filename );
remove( filename );
remove( PSA_ITS_STORAGE_TEMP );
(void) remove( filename );
(void) remove( PSA_ITS_STORAGE_TEMP );
uid_max = 0;
}