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memfrob

Section: C Library Functions (3)
Updated: 202-0-08
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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(size_t n;
              void s[n], size_t n);

DESCRIPTION

The memfrob() function obfuscates the first n bytes of the memory area s by exclusiv-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	M-Safe

STANDARDS

GNU.