memzero_explicit (9) - Linux Man Pages

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

NAME

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

SYNOPSIS

void memzero_explicit(void s, size_t count);

ARGUMENTS

s

Pointer to the start of the area.

count

The size of the area.

NOTE

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.

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