lib/mbedtls
1
0
Fork 0
mirror of https://github.com/Mbed-TLS/mbedtls.git synced 2025-07-28 00:21:48 +03:00
Code Activity

Add early return test + fake implementation

Browse Source
This commit is contained in:
Manuel Pégourié-Gonnard
2017-03-08 11:41:47 +01:00
parent 054433c493
commit 510d5caece
3 changed files with 130 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
library/ecp.c
View File

@ -99,6 +99,22 @@ void mbedtls_ecp_set_max_ops( unsigned max_ops )
{
ecp_max_ops = max_ops;
}
/*
* Saved context type for restarting operations.
*
* XXX: this is a temporary place for the definition
*/
typedef struct {
unsigned char fake_it; /* for tests: should we fake early return? */
} ecp_restart_context;
/*
* Saved context fro restarting operations.
*
* XXX: temporary place for the allocation
*/
static ecp_restart_context ecp_restart;
#endif /* MBEDTLS_ECP_EARLY_RETURN */
#if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED) || \
@ -1376,6 +1392,11 @@ static int ecp_mul_comb( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
mbedtls_ecp_point *T;
mbedtls_mpi M, mm;
#if defined(MBEDTLS_ECP_EARLY_RETURN)
if( ecp_restart.fake_it++ != 0 && ecp_max_ops != 0 )
return( MBEDTLS_ERR_ECP_IN_PROGRESS );
#endif
mbedtls_mpi_init( &M );
mbedtls_mpi_init( &mm );