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

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       project,  information  about  reporting  bugs, and the latest version of this page, can be
       found at https://www.kernel.org/doc/man-pages/.