NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON 

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

NAME         top

       memfrob - frobnicate (encrypt) a memory area

SYNOPSIS         top

       #define _GNU_SOURCE             /* See feature_test_macros(7) */
       #include <string.h>
       void *memfrob(void *s, size_t n);

DESCRIPTION         top

       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         top

       The memfrob() function returns a pointer to the encrypted memory
       area.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────┬───────────────┬─────────┐
       │Interface │ Attribute     │ Value   │
       ├──────────┼───────────────┼─────────┤
       │memfrob() │ Thread safety │ MT-Safe │
       └──────────┴───────────────┴─────────┘

CONFORMING TO         top

       The memfrob() function is unique to the GNU C Library.

SEE ALSO         top

       bstring(3), strfry(3)

COLOPHON         top

       This page is part of release 4.12 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)

Pages that refer to this page: bstring(3),  strfry(3)