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Linux 2.6 - man page for memfrob (linux section 3)

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.

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

SEE ALSO
       strfry(3)

COLOPHON
       This page is part of release 3.55 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)


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