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

       GNU.

SEE ALSO

       bstring(3), strfry(3)

Linux man-pages 6.9.1                              2024-05-02                                         memfrob(3)