memfrob(3)

NAME#

memfrob - frobnicate (obfuscate) a memory area

LIBRARY#

Standard C library (libc, -lc)

SYNOPSIS#

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

void *memfrob(void \ns\n[.\nn\n], size_t \nn\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).

STANDARDS#

GNU.

SEE ALSO#

bstring(3), strfry(3)