memfrob(3)                 Library Functions Manual                 memfrob(3)

NAME
       memfrob - memory frobnicate (obfuscate)

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #define _GNU_SOURCE             /* See feature_test_macros(7) */
       #include <string.h>  // see memory.h(3head)

       void *memfrob(size_t n;
                     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
       memory.h(3head), strfry(3)

Linux man-pages 6.19              2026-08-05                        memfrob(3)