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Remove duplicate parent-searching in verify_top()

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Manuel Pégourié-Gonnard 2017-07-03 18:45:13 +02:00
parent 2f09d59456
commit 6038cb6909
1 changed files with 2 additions and 39 deletions
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41
library/x509_crt.c
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@ -2016,6 +2016,8 @@ static int x509_crt_verify_top(
const mbedtls_md_info_t *md_info;
mbedtls_x509_crt *future_past_ca = NULL;
(void) self_cnt;
if( mbedtls_x509_time_is_past( &child->valid_to ) )
*flags |= MBEDTLS_X509_BADCERT_EXPIRED;
@ -2045,45 +2047,6 @@ static int x509_crt_verify_top(
goto callback;
}
md_info = mbedtls_md_info_from_type( child->sig_md );
if( mbedtls_md( md_info, child->tbs.p, child->tbs.len, hash ) != 0 )
{
/* Note: this can't happen except after an internal error */
/* Cannot check signature, no need to try any CA */
trust_ca = NULL;
}
for( /* trust_ca */ ; trust_ca != NULL; trust_ca = trust_ca->next )
{
if( x509_crt_check_parent( child, trust_ca, 1, path_cnt == 0 ) != 0 )
continue;
/* Self signed certificates do not count towards the limit */
if( trust_ca->max_pathlen > 0 &&
trust_ca->max_pathlen < 1 + path_cnt - self_cnt )
{
continue;
}
if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &trust_ca->pk,
child->sig_md, hash, mbedtls_md_get_size( md_info ),
child->sig.p, child->sig.len ) != 0 )
{
continue;
}
if( mbedtls_x509_time_is_past( &trust_ca->valid_to ) ||
mbedtls_x509_time_is_future( &trust_ca->valid_from ) )
{
if ( future_past_ca == NULL )
future_past_ca = trust_ca;
continue;
}
break;
}
if( trust_ca != NULL || ( trust_ca = future_past_ca ) != NULL )
{
/*