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Dispatch cipher functions through the driver interface

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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
This commit is contained in:
gabor-mezei-arm
2021-03-25 11:17:10 +01:00
parent f494bcd313
commit a9449a0b07
6 changed files with 469 additions and 249 deletions
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163
library/psa_crypto_cipher.c
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@ -445,6 +445,107 @@ static psa_status_t cipher_abort( mbedtls_psa_cipher_operation_t *operation )
return( PSA_SUCCESS );
}
static psa_status_t cipher_encrypt( const psa_key_attributes_t *attributes,
const uint8_t *key_buffer,
size_t key_buffer_size,
psa_algorithm_t alg,
const uint8_t *input,
size_t input_length,
uint8_t *output,
size_t output_size,
size_t *output_length )
{
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
mbedtls_psa_cipher_operation_t operation = MBEDTLS_PSA_CIPHER_OPERATION_INIT;
size_t olength;
status = cipher_encrypt_setup( &operation, attributes,
key_buffer, key_buffer_size, alg );
if( status != PSA_SUCCESS )
goto exit;
*output_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;
}
olength = 0;
status = cipher_update( &operation, input, input_length,
output + *output_length,output_size - *output_length,
&olength );
*output_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;
if( status != PSA_SUCCESS )
goto exit;
exit:
if( status == PSA_SUCCESS )
status = cipher_abort( &operation );
else
cipher_abort( &operation );
return( status );
}
static psa_status_t cipher_decrypt( const psa_key_attributes_t *attributes,
const uint8_t *key_buffer,
size_t key_buffer_size,
psa_algorithm_t alg,
const uint8_t *input,
size_t input_length,
uint8_t *output,
size_t output_size,
size_t *output_length )
{
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
mbedtls_psa_cipher_operation_t operation = MBEDTLS_PSA_CIPHER_OPERATION_INIT;
size_t olength;
status = cipher_decrypt_setup( &operation, attributes,
key_buffer, key_buffer_size, alg );
if( status != PSA_SUCCESS )
goto exit;
if( operation.iv_length > 0 )
{
status = cipher_set_iv( &operation, input, operation.iv_length );
if( status != PSA_SUCCESS )
goto exit;
}
olength = 0;
status = cipher_update( &operation, input + operation.iv_length,
input_length - operation.iv_length,
output, output_size, &olength );
*output_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;
if( status != PSA_SUCCESS )
goto exit;
exit:
if ( status == PSA_SUCCESS )
status = cipher_abort( &operation );
else
cipher_abort( &operation );
return( status );
}
#endif /* MBEDTLS_PSA_BUILTIN_CIPHER || PSA_CRYPTO_DRIVER_TEST */
#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
@ -498,6 +599,36 @@ psa_status_t mbedtls_psa_cipher_abort( mbedtls_psa_cipher_operation_t *operation
{
return( cipher_abort( operation ) );
}
psa_status_t mbedtls_psa_cipher_encrypt( const psa_key_attributes_t *attributes,
const uint8_t *key_buffer,
size_t key_buffer_size,
psa_algorithm_t alg,
const uint8_t *input,
size_t input_length,
uint8_t *output,
size_t output_size,
size_t *output_length )
{
return( cipher_encrypt( attributes, key_buffer, key_buffer_size,
alg, input, input_length,
output, output_size, output_length ) );
}
psa_status_t mbedtls_psa_cipher_decrypt( const psa_key_attributes_t *attributes,
const uint8_t *key_buffer,
size_t key_buffer_size,
psa_algorithm_t alg,
const uint8_t *input,
size_t input_length,
uint8_t *output,
size_t output_size,
size_t *output_length )
{
return( cipher_decrypt( attributes, key_buffer, key_buffer_size,
alg, input, input_length,
output, output_size, output_length ) );
}
#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
/*
@ -553,6 +684,38 @@ psa_status_t mbedtls_transparent_test_driver_cipher_abort(
{
return( cipher_abort( operation ) );
}
psa_status_t mbedtls_transparent_test_driver_cipher_encrypt(
const psa_key_attributes_t *attributes,
const uint8_t *key_buffer,
size_t key_buffer_size,
psa_algorithm_t alg,
const uint8_t *input,
size_t input_length,
uint8_t *output,
size_t output_size,
size_t *output_length )
{
return( cipher_encrypt( attributes, key_buffer, key_buffer_size,
alg, input, input_length,
output, output_size, output_length ) );
}
psa_status_t mbedtls_transparent_test_driver_cipher_decrypt(
const psa_key_attributes_t *attributes,
const uint8_t *key_buffer,
size_t key_buffer_size,
psa_algorithm_t alg,
const uint8_t *input,
size_t input_length,
uint8_t *output,
size_t output_size,
size_t *output_length )
{
return( cipher_decrypt( attributes, key_buffer, key_buffer_size,
alg, input, input_length,
output, output_size, output_length ) );
}
#endif /* PSA_CRYPTO_DRIVER_TEST */
#endif /* MBEDTLS_PSA_CRYPTO_C */