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Reduce indentation need by checking negative case first

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Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
This commit is contained in:
Steven Cooreman 2021-04-06 15:09:19 +02:00
parent 43e4a406d9
commit 054bf7f2a0
1 changed files with 83 additions and 87 deletions
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170
tests/src/drivers/key_management.c
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@ -173,66 +173,64 @@ psa_status_t test_opaque_export_key(
const uint8_t *key, size_t key_length,
uint8_t *data, size_t data_size, size_t *data_length )
{
if( key_length == sizeof( psa_drv_slot_number_t ) )
{
/* Assume this is a builtin key based on the key material length. */
psa_drv_slot_number_t slot_number = *( ( psa_drv_slot_number_t* ) key );
switch( slot_number )
{
case PSA_CRYPTO_TEST_DRIVER_BUILTIN_ECDSA_KEY_SLOT:
/* This is the ECDSA slot. Verify the key's attributes before
* returning the private key. */
if( psa_get_key_type( attributes ) !=
PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_FAMILY_SECP_R1 ) )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_bits( attributes ) != 256 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_algorithm( attributes ) !=
PSA_ALG_ECDSA( PSA_ALG_ANY_HASH ) )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( ( psa_get_key_usage_flags( attributes ) &
PSA_KEY_USAGE_EXPORT ) == 0 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( data_size < sizeof( test_driver_ecdsa_key ) )
return( PSA_ERROR_BUFFER_TOO_SMALL );
memcpy( data, test_driver_ecdsa_key,
sizeof( test_driver_ecdsa_key ) );
*data_length = sizeof( test_driver_ecdsa_key );
return( PSA_SUCCESS );
case PSA_CRYPTO_TEST_DRIVER_BUILTIN_AES_KEY_SLOT:
/* This is the AES slot. Verify the key's attributes before
* returning the key. */
if( psa_get_key_type( attributes ) != PSA_KEY_TYPE_AES )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_bits( attributes ) != 128 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_algorithm( attributes ) != PSA_ALG_CTR )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( ( psa_get_key_usage_flags( attributes ) &
PSA_KEY_USAGE_EXPORT ) == 0 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( data_size < sizeof( test_driver_aes_key ) )
return( PSA_ERROR_BUFFER_TOO_SMALL );
memcpy( data, test_driver_aes_key,
sizeof( test_driver_aes_key ) );
*data_length = sizeof( test_driver_aes_key );
return( PSA_SUCCESS );
default:
return( PSA_ERROR_DOES_NOT_EXIST );
}
}
else
if( key_length != sizeof( psa_drv_slot_number_t ) )
{
/* Test driver does not support generic opaque key handling yet. */
return( PSA_ERROR_NOT_SUPPORTED );
}
/* Assume this is a builtin key based on the key material length. */
psa_drv_slot_number_t slot_number = *( ( psa_drv_slot_number_t* ) key );
switch( slot_number )
{
case PSA_CRYPTO_TEST_DRIVER_BUILTIN_ECDSA_KEY_SLOT:
/* This is the ECDSA slot. Verify the key's attributes before
* returning the private key. */
if( psa_get_key_type( attributes ) !=
PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_FAMILY_SECP_R1 ) )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_bits( attributes ) != 256 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_algorithm( attributes ) !=
PSA_ALG_ECDSA( PSA_ALG_ANY_HASH ) )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( ( psa_get_key_usage_flags( attributes ) &
PSA_KEY_USAGE_EXPORT ) == 0 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( data_size < sizeof( test_driver_ecdsa_key ) )
return( PSA_ERROR_BUFFER_TOO_SMALL );
memcpy( data, test_driver_ecdsa_key,
sizeof( test_driver_ecdsa_key ) );
*data_length = sizeof( test_driver_ecdsa_key );
return( PSA_SUCCESS );
case PSA_CRYPTO_TEST_DRIVER_BUILTIN_AES_KEY_SLOT:
/* This is the AES slot. Verify the key's attributes before
* returning the key. */
if( psa_get_key_type( attributes ) != PSA_KEY_TYPE_AES )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_bits( attributes ) != 128 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_algorithm( attributes ) != PSA_ALG_CTR )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( ( psa_get_key_usage_flags( attributes ) &
PSA_KEY_USAGE_EXPORT ) == 0 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( data_size < sizeof( test_driver_aes_key ) )
return( PSA_ERROR_BUFFER_TOO_SMALL );
memcpy( data, test_driver_aes_key,
sizeof( test_driver_aes_key ) );
*data_length = sizeof( test_driver_aes_key );
return( PSA_SUCCESS );
default:
return( PSA_ERROR_DOES_NOT_EXIST );
}
}
psa_status_t test_transparent_export_public_key(
@ -295,41 +293,39 @@ psa_status_t test_opaque_export_public_key(
const uint8_t *key, size_t key_length,
uint8_t *data, size_t data_size, size_t *data_length )
{
if( key_length == sizeof( psa_drv_slot_number_t ) )
{
/* Assume this is a builtin key based on the key material length. */
psa_drv_slot_number_t slot_number = *( ( psa_drv_slot_number_t* ) key );
switch( slot_number )
{
case PSA_CRYPTO_TEST_DRIVER_BUILTIN_ECDSA_KEY_SLOT:
/* This is the ECDSA slot. Verify the key's attributes before
* returning the public key. */
if( psa_get_key_type( attributes ) !=
PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_FAMILY_SECP_R1 ) )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_bits( attributes ) != 256 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_algorithm( attributes ) !=
PSA_ALG_ECDSA( PSA_ALG_ANY_HASH ) )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( data_size < sizeof( test_driver_ecdsa_pubkey ) )
return( PSA_ERROR_BUFFER_TOO_SMALL );
memcpy( data, test_driver_ecdsa_pubkey,
sizeof( test_driver_ecdsa_pubkey ) );
*data_length = sizeof( test_driver_ecdsa_pubkey );
return( PSA_SUCCESS );
default:
return( PSA_ERROR_DOES_NOT_EXIST );
}
}
else
if( key_length != sizeof( psa_drv_slot_number_t ) )
{
/* Test driver does not support generic opaque key handling yet. */
return( PSA_ERROR_NOT_SUPPORTED );
}
/* Assume this is a builtin key based on the key material length. */
psa_drv_slot_number_t slot_number = *( ( psa_drv_slot_number_t* ) key );
switch( slot_number )
{
case PSA_CRYPTO_TEST_DRIVER_BUILTIN_ECDSA_KEY_SLOT:
/* This is the ECDSA slot. Verify the key's attributes before
* returning the public key. */
if( psa_get_key_type( attributes ) !=
PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_FAMILY_SECP_R1 ) )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_bits( attributes ) != 256 )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( psa_get_key_algorithm( attributes ) !=
PSA_ALG_ECDSA( PSA_ALG_ANY_HASH ) )
return( PSA_ERROR_CORRUPTION_DETECTED );
if( data_size < sizeof( test_driver_ecdsa_pubkey ) )
return( PSA_ERROR_BUFFER_TOO_SMALL );
memcpy( data, test_driver_ecdsa_pubkey,
sizeof( test_driver_ecdsa_pubkey ) );
*data_length = sizeof( test_driver_ecdsa_pubkey );
return( PSA_SUCCESS );
default:
return( PSA_ERROR_DOES_NOT_EXIST );
}
}
/* The opaque test driver exposes two built-in keys when builtin key support is