Manpages - memfrob.3

Table of Contents

NAME

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).

Interface Attribute Value
*memfrob*() Thread safety MT-Safe

CONFORMING TO

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

SEE ALSO

*bstring*(3), *strfry*(3)

COLOPHON

This page is part of release 5.13 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/.

Author: dt

Created: 2022-02-20 Sun 17:45