MEMFROB
Section: Linux Programmer's Manual (3)
Updated: 2017-03-13
Page Index
NAME
memfrob - frobnicate (encrypt) a memory area
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <string.h>
void *memfrob(void *s, size_t n);
DESCRIPTION
The
memfrob()
function encrypts the first
n bytes of the
memory area
s by exclusive-ORing each character with the number
42.
The effect can be reversed by using
memfrob()
on the
encrypted memory area.
Note that this function is not a proper encryption routine as the XOR
constant is fixed, and is suitable only for hiding strings.
RETURN VALUE
The
memfrob()
function returns a pointer to the encrypted memory
area.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
memfrob()
| Thread safety | MT-Safe
|
CONFORMING TO
The
memfrob()
function is unique to the
GNU C Library.
SEE ALSO
bstring(3),
strfry(3)
COLOPHON
This page is part of release 5.10 of the Linux
man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
https://www.kernel.org/doc/man-pages/.