explicit_bzero — write zeroes to a byte string

The explicit_bzero() function writes len zero bytes to the string buf. If len is zero, explicit_bzero() does nothing. The explicit_bzero() variant behaves the same as the bzero() function, but will not be removed by a compiler's dead store optimization pass, making it useful for clearing sensitive memory such as a password.

The explicit_bzero() function first appeared in OpenBSD 5.5, glibc 2.25. Debian January 22, 2014 explicit_bzero(3bsd)

Utility functions from BSD systems (libbsd, -lbsd)

explicit_bzero — write zeroes to a byte string

bzero(3), memset(3), swab(3)

#include<string.h> (See libbsd(7) for include usage.) voidexplicit_bzero(void*buf, size_tlen);