yuzu-emu/mbedtls
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Share code for PSK identity configuration

Browse source 
This commit shares the code for setting the PSK identity hint between
the functions mbedtls_ssl_conf_psk() and mbedtls_ssl_conf_psk_opaque().
This commit is contained in:
Hanno Becker 2018-11-15 13:33:04 +00:00
parent ed437a674e
commit e9bf0f4c32
1 changed files with 48 additions and 44 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

92
library/ssl_tls.c
View file

@ -7450,44 +7450,56 @@ static void ssl_conf_remove_psk( mbedtls_ssl_config *conf )
}
}
int mbedtls_ssl_conf_psk( mbedtls_ssl_config *conf,
const unsigned char *psk, size_t psk_len,
const unsigned char *psk_identity, size_t psk_identity_len )
/* This function assumes that PSK identity in the SSL config is unset.
* It checks that the provided identity is well-formed and attempts
* to make a copy of it in the SSL config.
* On failure, the PSK identity in the config remains unset. */
static int ssl_conf_set_psk_identity( mbedtls_ssl_config *conf,
unsigned char const *psk_identity,
size_t psk_identity_len )
{
if( psk == NULL || psk_identity == NULL )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
if( psk_len > MBEDTLS_PSK_MAX_LEN )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
/* Identity len will be encoded on two bytes */
if( ( psk_identity_len >> 16 ) != 0 ||
if( psk_identity == NULL ||
( psk_identity_len >> 16 ) != 0 ||
psk_identity_len > MBEDTLS_SSL_OUT_CONTENT_LEN )
{
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
}
ssl_conf_remove_psk( conf );
if( ( conf->psk = mbedtls_calloc( 1, psk_len ) ) == NULL ||
( conf->psk_identity = mbedtls_calloc( 1, psk_identity_len ) ) == NULL )
{
mbedtls_free( conf->psk );
mbedtls_free( conf->psk_identity );
conf->psk = NULL;
conf->psk_identity = NULL;
conf->psk_identity = mbedtls_calloc( 1, psk_identity_len );
if( conf->psk_identity == NULL )
return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
}
conf->psk_len = psk_len;
conf->psk_identity_len = psk_identity_len;
memcpy( conf->psk, psk, conf->psk_len );
memcpy( conf->psk_identity, psk_identity, conf->psk_identity_len );
return( 0 );
}
int mbedtls_ssl_conf_psk( mbedtls_ssl_config *conf,
const unsigned char *psk, size_t psk_len,
const unsigned char *psk_identity, size_t psk_identity_len )
{
int ret;
/* Remove opaque/raw PSK + PSK Identity */
ssl_conf_remove_psk( conf );
/* Check and set raw PSK */
if( psk == NULL || psk_len > MBEDTLS_PSK_MAX_LEN )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
if( ( conf->psk = mbedtls_calloc( 1, psk_len ) ) == NULL )
return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
conf->psk_len = psk_len;
memcpy( conf->psk, psk, conf->psk_len );
/* Check and set PSK Identity */
ret = ssl_conf_set_psk_identity( conf, psk_identity, psk_identity_len );
if( ret != 0 )
ssl_conf_remove_psk( conf );
return( ret );
}
static void ssl_remove_psk( mbedtls_ssl_context *ssl )
{
#if defined(MBEDTLS_USE_PSA_CRYPTO)
@ -7532,30 +7544,22 @@ int mbedtls_ssl_conf_psk_opaque( mbedtls_ssl_config *conf,
const unsigned char *psk_identity,
size_t psk_identity_len )
{
if( psk_slot == 0 || psk_identity == NULL )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
/* Identity len will be encoded on two bytes */
if( ( psk_identity_len >> 16 ) != 0 ||
psk_identity_len > MBEDTLS_SSL_OUT_CONTENT_LEN )
{
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
}
int ret;
/* Clear opaque/raw PSK + PSK Identity, if present. */
ssl_conf_remove_psk( conf );
if( ( conf->psk_identity = mbedtls_calloc( 1, psk_identity_len ) ) == NULL )
{
mbedtls_free( conf->psk_identity );
conf->psk_identity = NULL;
return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
}
conf->psk_identity_len = psk_identity_len;
memcpy( conf->psk_identity, psk_identity, conf->psk_identity_len );
/* Check and set opaque PSK */
if( psk_slot == 0 )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
conf->psk_opaque = psk_slot;
return( 0 );
/* Check and set PSK Identity */
ret = ssl_conf_set_psk_identity( conf, psk_identity,
psk_identity_len );
if( ret != 0 )
ssl_conf_remove_psk( conf );
return( ret );
}
int mbedtls_ssl_set_hs_psk_opaque( mbedtls_ssl_context *ssl,