NAME

       memfrob - frobnicate (obfuscate) a memory area

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #define _GNU_SOURCE             /* See feature_test_macros(7) */
       #include <string.h>

       void *memfrob(void s[.n], size_t n);

DESCRIPTION

       The  memfrob()  function  obfuscates  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 obfuscated 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 obfuscated memory area.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       ┌───────────────────────────────────────────────────────────────┬───────────────┬─────────┐
       │Interface                                                      │ Attribute     │ Value   │
       ├───────────────────────────────────────────────────────────────┼───────────────┼─────────┤
       │memfrob()                                                      │ Thread safety │ MT-Safe │
       └───────────────────────────────────────────────────────────────┴───────────────┴─────────┘

STANDARDS

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

SEE ALSO

       bstring(3), strfry(3)