memfrob man page

memfrob — frobnicate (encrypt) a memory area

Synopsis

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

void *memfrob(void *s, size_t n);

Description

The memfrob() function encrypts 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 encrypted 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 encrypted memory area.

Attributes

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue
memfrob()Thread safetyMT-Safe

Conforming to

The memfrob() function is unique to the GNU C Library.

See Also

strfry(3)

Colophon

This page is part of release 4.08 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Referenced By

bstring(3), strfry(3).

2015-03-02 GNU Linux Programmer's Manual