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MEMFROB

Section: Linux Programmer's Manual (3)
Updated: 2017-03-13
Index Return to Main 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).
InterfaceAttributeValue
memfrob() Thread safetyMT-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 4.13 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/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
CONFORMING TO
SEE ALSO
COLOPHON


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