XCRYPT
Section: Linux Programmer's Manual (3)
Updated: 2019-03-06
Page Index
NAME
xencrypt, xdecrypt, passwd2des - RFS password encryption
SYNOPSIS
#include <rpc/des_crypt.h>
void passwd2des(char *passwd, char *key);
int xencrypt(char *secret, char *passwd);
int xdecrypt(char *secret, char *passwd);
DESCRIPTION
WARNING:
Do not use these functions in new code. They do not achieve
any type of acceptable cryptographic security guarantees.
The function
passwd2des()
takes a character string
passwd
of arbitrary length and fills a character array
key
of length 8.
The array
key
is suitable for use as DES key.
It has odd parity set in bit 0 of each byte.
Both other functions described here use this function to turn their
argument
passwd
into a DES key.
The
xencrypt()
function takes the ASCII character string
secret
given in hex,
which must have a length that is a multiple of 16,
encrypts it using the DES key derived from
passwd
by
passwd2des(),
and outputs the result again in
secret
as a hex string
of the same length.
The
xdecrypt()
function performs the converse operation.
RETURN VALUE
The functions
xencrypt()
and
xdecrypt()
return 1 on success and 0 on error.
VERSIONS
These functions are available in glibc since version 2.1.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
passwd2des(),
xencrypt(),
xdecrypt()
| Thread safety | MT-Safe
|
BUGS
The prototypes are missing from the abovementioned include file.
SEE ALSO
cbc_crypt(3)
COLOPHON
This page is part of release 5.10 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/.