sourCEntral -   <div class="manpages" id="manpage"> <a href="%$(PREFIX)$%3+BZERO">BZERO(3)</a> BSD Library Functions Manual <a href="%$(PREFIX)$%3+BZERO">BZERO(3)</a> NAME explicit_bzero — write zeroes to a byte string LIBRARY Utility functions from BSD systems (libbsd, −lbsd) SYNOPSIS #include <bsd/string.h> void explicit_bzero(void *buf, size_t len); DESCRIPTION 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. SEE ALSO <a href="%$(PREFIX)$%3+bzero">bzero(3)</a>, <a href="%$(PREFIX)$%3+memset">memset(3)</a>, <a href="%$(PREFIX)$%3+swab">swab(3)</a> HISTORY The explicit_bzero() function first appeared in OpenBSD 5.5. BSD December 5, 2015 BSD </div>

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BZERO(3) BSD Library Functions Manual BZERO(3)

NAME

explicit_bzero — write zeroes to a byte string

LIBRARY

Utility functions from BSD systems (libbsd, −lbsd)

SYNOPSIS

#include <bsd/string.h>

void

explicit_bzero(void *buf, size_t len);

DESCRIPTION

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.

SEE ALSO

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

HISTORY

The explicit_bzero() function first appeared in OpenBSD 5.5.

BSD December 5, 2015 BSD

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