MEMFROB(3)						     Linux Programmer's Manual							MEMFROB(3)

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 4.15 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/.

GNU
								    2017-03-13								MEMFROB(3)