xcrypt

XCRYPT(3)                  Linux Programmer's Manual                 XCRYPT(3)

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  at-
       tributes(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 5.05 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/.

                                  2019-03-06                         XCRYPT(3)