memfrob

memfrob(3)                 Library Functions Manual                 memfrob(3)

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)