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Check & set operation flags for both driver and software in the core

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Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
This commit is contained in:
Steven Cooreman 2020-09-09 15:28:49 +02:00
parent cfeea8fa1e
commit 7df0292f5a
1 changed files with 36 additions and 29 deletions
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65
library/psa_crypto.c
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@ -4102,10 +4102,7 @@ static psa_status_t psa_cipher_setup( psa_cipher_operation_t *operation,
alg );
if( status == PSA_SUCCESS )
{
operation->accelerator_set = 1;
operation->key_set = 1;
}
if( status != PSA_ERROR_NOT_SUPPORTED ||
psa_key_lifetime_is_external( slot->attr.lifetime ) )
@ -4172,7 +4169,6 @@ static psa_status_t psa_cipher_setup( psa_cipher_operation_t *operation,
goto exit;
#endif //MBEDTLS_CIPHER_MODE_WITH_PADDING
operation->key_set = 1;
operation->block_size = ( PSA_ALG_IS_STREAM_CIPHER( alg ) ? 1 :
PSA_BLOCK_CIPHER_BLOCK_SIZE( slot->attr.type ) );
if( ( alg & PSA_ALG_CIPHER_FROM_BLOCK_FLAG ) != 0 &&
@ -4186,10 +4182,17 @@ static psa_status_t psa_cipher_setup( psa_cipher_operation_t *operation,
operation->iv_size = 12;
#endif
status = PSA_SUCCESS;
exit:
if( status == 0 )
if( ret != 0 )
status = mbedtls_to_psa_error( ret );
if( status != 0 )
if( status == PSA_SUCCESS )
{
/* Update operation flags for both driver and software implementations */
operation->key_set = 1;
}
else
psa_cipher_abort( operation );
return( status );
}
@ -4215,6 +4218,10 @@ psa_status_t psa_cipher_generate_iv( psa_cipher_operation_t *operation,
{
psa_status_t status;
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( operation->iv_set || ! operation->iv_required )
{
return( PSA_ERROR_BAD_STATE );
}
if( operation->accelerator_set == 1 )
{
@ -4225,10 +4232,6 @@ psa_status_t psa_cipher_generate_iv( psa_cipher_operation_t *operation,
goto exit;
}
if( operation->iv_set || ! operation->iv_required )
{
return( PSA_ERROR_BAD_STATE );
}
if( iv_size < operation->iv_size )
{
status = PSA_ERROR_BUFFER_TOO_SMALL;
@ -4246,7 +4249,9 @@ psa_status_t psa_cipher_generate_iv( psa_cipher_operation_t *operation,
status = psa_cipher_set_iv( operation, iv, *iv_length );
exit:
if( status != PSA_SUCCESS )
if( status == PSA_SUCCESS )
operation->iv_set = 1;
else
psa_cipher_abort( operation );
return( status );
}
@ -4257,6 +4262,10 @@ psa_status_t psa_cipher_set_iv( psa_cipher_operation_t *operation,
{
psa_status_t status;
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( operation->iv_set || ! operation->iv_required )
{
return( PSA_ERROR_BAD_STATE );
}
if( operation->accelerator_set == 1 )
{
@ -4266,10 +4275,6 @@ psa_status_t psa_cipher_set_iv( psa_cipher_operation_t *operation,
goto exit;
}
if( operation->iv_set || ! operation->iv_required )
{
return( PSA_ERROR_BAD_STATE );
}
if( iv_length != operation->iv_size )
{
status = PSA_ERROR_INVALID_ARGUMENT;
@ -4382,6 +4387,14 @@ psa_status_t psa_cipher_update( psa_cipher_operation_t *operation,
{
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
size_t expected_output_size;
if( operation->alg == 0 )
{
return( PSA_ERROR_BAD_STATE );
}
if( operation->iv_required && ! operation->iv_set )
{
return( PSA_ERROR_BAD_STATE );
}
if( operation->accelerator_set == 1 )
{
@ -4394,15 +4407,6 @@ psa_status_t psa_cipher_update( psa_cipher_operation_t *operation,
goto exit;
}
if( operation->alg == 0 )
{
return( PSA_ERROR_BAD_STATE );
}
if( operation->iv_required && ! operation->iv_set )
{
return( PSA_ERROR_BAD_STATE );
}
if( ! PSA_ALG_IS_STREAM_CIPHER( operation->alg ) )
{
/* Take the unprocessed partial block left over from previous
@ -4456,6 +4460,14 @@ psa_status_t psa_cipher_finish( psa_cipher_operation_t *operation,
psa_status_t status = PSA_ERROR_GENERIC_ERROR;
int cipher_ret = MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE;
uint8_t temp_output_buffer[MBEDTLS_MAX_BLOCK_LENGTH];
if( operation->alg == 0 )
{
return( PSA_ERROR_BAD_STATE );
}
if( operation->iv_required && ! operation->iv_set )
{
return( PSA_ERROR_BAD_STATE );
}
if( operation->accelerator_set == 1 )
{
@ -4470,11 +4482,6 @@ psa_status_t psa_cipher_finish( psa_cipher_operation_t *operation,
return( status );
}
if( operation->iv_required && ! operation->iv_set )
{
return( PSA_ERROR_BAD_STATE );
}
if( operation->ctx.cipher.unprocessed_len != 0 )
{
if( operation->alg == PSA_ALG_ECB_NO_PADDING ||