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Use local variable instead of an ouput parameter

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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
This commit is contained in:
gabor-mezei-arm 2021-06-25 15:23:05 +02:00
parent 6f4e5bbe37
commit e5ff8f430c
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GPG key ID: 106F5A41ECC305BD
1 changed files with 18 additions and 17 deletions
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35
library/psa_crypto_cipher.c
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@ -458,38 +458,39 @@ static psa_status_t cipher_encrypt( const psa_key_attributes_t *attributes,
{
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
mbedtls_psa_cipher_operation_t operation = MBEDTLS_PSA_CIPHER_OPERATION_INIT;
size_t olength;
size_t olength, accumulated_length;
status = cipher_encrypt_setup( &operation, attributes,
key_buffer, key_buffer_size, alg );
if( status != PSA_SUCCESS )
goto exit;
*output_length = 0;
accumulated_length = 0;
if( operation.iv_length > 0 )
{
status = cipher_set_iv( &operation, output, operation.iv_length );
if( status != PSA_SUCCESS )
goto exit;
*output_length = operation.iv_length;
accumulated_length = operation.iv_length;
}
olength = 0;
status = cipher_update( &operation, input, input_length,
output + *output_length,output_size - *output_length,
output + operation.iv_length,
output_size - operation.iv_length,
&olength );
*output_length += olength;
accumulated_length += olength;
if( status != PSA_SUCCESS )
goto exit;
olength = 0;
status = cipher_finish( &operation, output + *output_length,
output_size - *output_length, &olength );
*output_length += olength;
status = cipher_finish( &operation, output + accumulated_length,
output_size - accumulated_length, &olength );
accumulated_length += olength;
if( status != PSA_SUCCESS )
goto exit;
*output_length = accumulated_length;
exit:
if( status == PSA_SUCCESS )
status = cipher_abort( &operation );
@ -510,7 +511,7 @@ static psa_status_t cipher_decrypt( const psa_key_attributes_t *attributes,
{
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
mbedtls_psa_cipher_operation_t operation = MBEDTLS_PSA_CIPHER_OPERATION_INIT;
size_t olength;
size_t olength, accumulated_length;
status = cipher_decrypt_setup( &operation, attributes,
key_buffer, key_buffer_size, alg );
@ -524,21 +525,21 @@ static psa_status_t cipher_decrypt( const psa_key_attributes_t *attributes,
goto exit;
}
olength = 0;
status = cipher_update( &operation, input + operation.iv_length,
input_length - operation.iv_length,
output, output_size, &olength );
*output_length = olength;
accumulated_length = olength;
if( status != PSA_SUCCESS )
goto exit;
olength = 0;
status = cipher_finish( &operation, output + *output_length,
output_size - *output_length, &olength );
*output_length += olength;
status = cipher_finish( &operation, output + accumulated_length,
output_size - accumulated_length, &olength );
accumulated_length += olength;
if( status != PSA_SUCCESS )
goto exit;
*output_length = accumulated_length;
exit:
if ( status == PSA_SUCCESS )
status = cipher_abort( &operation );