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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 only suitable for hiding strings.

RETURN VALUE         top

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

CONFORMING TO         top

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

SEE ALSO         top

       strfry(3)

COLOPHON         top

       This page is part of release 3.32 of the Linux man-pages project.  A
       description of the project, and information about reporting bugs, can be found
       at http://www.kernel.org/doc/man-pages/.

GNU                                   2010-09-10                           MEMFROB(3)

HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface

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