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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

     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).

     allbox; lbw37 lb lb l l l.  Interface Attribute Value T{  passwd2des(),
     xencrypt(), xdecrypt() T}   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 4.16 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/.

                                2017-09-15                         XCRYPT(3)