NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | VERSIONS | ATTRIBUTES | BUGS | SEE ALSO | COLOPHON

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

NAME         top

       xencrypt, xdecrypt, passwd2des - RFS password encryption

SYNOPSIS         top

       #include <rpc/des_crypt.h>
       void passwd2des(char *passwd, char *key);
       int xencrypt(char *secret, char *passwd);
       int xdecrypt(char *secret, char *passwd);

DESCRIPTION         top

       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         top

       The functions xencrypt() and xdecrypt() return 1 on success and 0 on
       error.

VERSIONS         top

       These functions are available in glibc since version 2.1.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │Interface                             Attribute     Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │passwd2des(), xencrypt(), xdecrypt()  │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

BUGS         top

       The prototypes are missing from the abovementioned include file.

SEE ALSO         top

       cbc_crypt(3)

COLOPHON         top

       This page is part of release 4.12 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/.
                                 2015-07-23                        XCRYPT(3)

Pages that refer to this page: des_crypt(3)