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Whitespace, logging and documentation fixes

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Introduce a psa_status_t status to handle return values.
Add a debug message with API usage description.
This commit is contained in:
Andrzej Kurek 2019-01-14 04:35:19 -05:00
parent d6db9be598
commit 814feffd15
2 changed files with 23 additions and 13 deletions
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2
include/mbedtls/ssl_internal.h
View file

@ -765,7 +765,7 @@ int mbedtls_ssl_get_key_exchange_md_ssl_tls( mbedtls_ssl_context *ssl,
#if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \
defined(MBEDTLS_SSL_PROTO_TLS1_2)
// The hash buffer must have at least MBEDTLS_MD_MAX_SIZE bytes of length.
/* The hash buffer must have at least MBEDTLS_MD_MAX_SIZE bytes of length. */
int mbedtls_ssl_get_key_exchange_md_tls1_2( mbedtls_ssl_context *ssl,
unsigned char *hash, size_t *hashlen,
unsigned char *data, size_t data_len,

34
library/ssl_tls.c
View file

@ -9984,44 +9984,51 @@ int mbedtls_ssl_get_key_exchange_md_tls1_2( mbedtls_ssl_context *ssl,
unsigned char *data, size_t data_len,
mbedtls_md_type_t md_alg )
{
int ret = 0;
psa_status_t status;
psa_hash_operation_t hash_operation;
psa_algorithm_t hash_alg = mbedtls_psa_translate_md( md_alg );
if( ( ret = psa_hash_setup( &hash_operation, hash_alg ) ) != PSA_SUCCESS )
MBEDTLS_SSL_DEBUG_MSG( 2, ( "Perform PSA-based computation of digest \
of ServerKeyExchange" ) );
if( ( status = psa_hash_setup( &hash_operation,
hash_alg ) ) != PSA_SUCCESS )
{
MBEDTLS_SSL_DEBUG_RET( 1, "psa_hash_setup", ret );
MBEDTLS_SSL_DEBUG_RET( 1, "psa_hash_setup", status );
goto exit;
}
if( ( ret = psa_hash_update( &hash_operation, ssl->handshake->randbytes, 64 ) ) != PSA_SUCCESS )
if( ( status = psa_hash_update( &hash_operation, ssl->handshake->randbytes,
64 ) ) != PSA_SUCCESS )
{
MBEDTLS_SSL_DEBUG_RET( 1, "psa_hash_update", ret );
MBEDTLS_SSL_DEBUG_RET( 1, "psa_hash_update", status );
goto exit;
}
if( ( ret = psa_hash_update( &hash_operation, data, data_len ) ) != PSA_SUCCESS )
if( ( status = psa_hash_update( &hash_operation,
data, data_len ) ) != PSA_SUCCESS )
{
MBEDTLS_SSL_DEBUG_RET( 1, "psa_hash_update", ret );
MBEDTLS_SSL_DEBUG_RET( 1, "psa_hash_update", status );
goto exit;
}
if( ( ret = psa_hash_finish( &hash_operation, hash, MBEDTLS_MD_MAX_SIZE, hashlen ) ) != PSA_SUCCESS )
if( ( status = psa_hash_finish( &hash_operation, hash, MBEDTLS_MD_MAX_SIZE,
hashlen ) ) != PSA_SUCCESS )
{
MBEDTLS_SSL_DEBUG_RET( 1, "psa_hash_finish", ret );
MBEDTLS_SSL_DEBUG_RET( 1, "psa_hash_finish", status );
goto exit;
}
exit:
if( ret != 0 )
if( status != PSA_SUCCESS )
{
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR );
switch(ret)
switch( status )
{
case PSA_ERROR_NOT_SUPPORTED:
return( MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE );
case PSA_ERROR_BAD_STATE: // Intentional fallthrough
case PSA_ERROR_BAD_STATE: /* Intentional fallthrough */
case PSA_ERROR_BUFFER_TOO_SMALL:
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
case PSA_ERROR_INSUFFICIENT_MEMORY:
@ -10045,6 +10052,9 @@ int mbedtls_ssl_get_key_exchange_md_tls1_2( mbedtls_ssl_context *ssl,
const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( md_alg );
*hashlen = mbedtls_md_get_size( md_info );
MBEDTLS_SSL_DEBUG_MSG( 2, ( "Perform mbedtls-based computation of digest \
of ServerKeyExchange" ) );
mbedtls_md_init( &ctx );
/*