yuzu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2024-12-23 17:55:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix additional data calculation if CID is disabled

Browse source 
In contrast to other aspects of the Connection ID extension,
the CID-based additional data for MAC computations differs from
the non-CID case even if the CID length is 0, because it
includes the CID length.
This commit is contained in:
Hanno Becker 2019-05-09 11:38:24 +01:00
parent 3b1a88506b
commit 1f02f05f2e
1 changed files with 14 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
library/ssl_tls.c
View file

@ -1647,16 +1647,21 @@ static void ssl_extract_add_data_from_record( unsigned char* add_data,
memcpy( add_data + 9, rec->ver, sizeof( rec->ver ) );
#if defined(MBEDTLS_SSL_CID)
memcpy( add_data + 11, rec->cid, rec->cid_len );
add_data[11 + rec->cid_len + 0] = rec->cid_len;
add_data[11 + rec->cid_len + 1] = ( rec->data_len >> 8 ) & 0xFF;
add_data[11 + rec->cid_len + 2] = ( rec->data_len >> 0 ) & 0xFF;
*add_data_len = 13 + 1 + rec->cid_len;
#else /* MBEDTLS_SSL_CID */
add_data[11 + 0] = ( rec->data_len >> 8 ) & 0xFF;
add_data[11 + 1] = ( rec->data_len >> 0 ) & 0xFF;
*add_data_len = 13;
if( rec->cid_len != 0 )
{
memcpy( add_data + 11, rec->cid, rec->cid_len );
add_data[11 + rec->cid_len + 0] = rec->cid_len;
add_data[11 + rec->cid_len + 1] = ( rec->data_len >> 8 ) & 0xFF;
add_data[11 + rec->cid_len + 2] = ( rec->data_len >> 0 ) & 0xFF;
*add_data_len = 13 + 1 + rec->cid_len;
}
else
#endif /* MBEDTLS_SSL_CID */
{
add_data[11 + 0] = ( rec->data_len >> 8 ) & 0xFF;
add_data[11 + 1] = ( rec->data_len >> 0 ) & 0xFF;
*add_data_len = 13;
}
}
int mbedtls_ssl_encrypt_buf( mbedtls_ssl_context *ssl,