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

       xencrypt, xdecrypt, passwd2des - RFS password encryption

       #include <rpc/des_crypt.h>

       void passwd2des(char *passwd, char *key);

       int xencrypt(char *secret, char *passwd);

       int xdecrypt(char *secret, char *passwd);

       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.

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

       These routines are present in libc 4.6.27 and later, and in glibc 2.1 and later.

       The prototypes are missing from the abovementioned include file.


       This  page  is part of release 3.22 of the Linux man-pages project.  A description of the project, and informa-
       tion about reporting bugs, can be found at

                                  2003-04-04                         XCRYPT(3)