memfrob (3)

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)

Information

Source
Linux kernel
OS/version
GNU
Source updated
March 13, 2017
Page created
February 9, 2018
Page generated
December 2, 2018