memzero_explicit — Fill a region of memory (e.g. sensitive keying data) with 0s.


void memzero_explicit (void * s,
 size_t count);


void * s

Pointer to the start of the area.

size_t count

The size of the area.


usually using memset is just fine (!), but in cases where clearing out _local_ data at the end of a scope is necessary, memzero_explicit should be used instead in order to prevent the compiler from optimising away zeroing.

memzero_explicit doesn't need an arch-specific version as it just invokes the one of memset implicitly.