1XCRYPT(3)                  Linux Programmer's Manual                 XCRYPT(3)
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NAME

6       xencrypt, xdecrypt, passwd2des - RFS password encryption
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SYNOPSIS

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

18       The  function passwd2des() takes a character string passwd of arbitrary
19       length and fills a character array key of length 8.  The array  key  is
20       suitable  for  use  as DES key.  It has odd parity set in bit 0 of each
21       byte.  Both other functions described here use this  function  to  turn
22       their argument passwd into a DES key.
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24       The  xencrypt()  function takes the ASCII character string secret given
25       in hex, which must have a length that is a multiple of 16, encrypts  it
26       using  the DES key derived from passwd by passwd2des(), and outputs the
27       result again in secret as a hex string of the same length.
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29       The xdecrypt() function performs the converse operation.
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RETURN VALUE

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

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

40       The prototypes are missing from the abovementioned include file.
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SEE ALSO

43       cbc_crypt(3)
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COLOPHON

46       This page is part of release 3.25 of the Linux  man-pages  project.   A
47       description  of  the project, and information about reporting bugs, can
48       be found at http://www.kernel.org/doc/man-pages/.
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52                                  2003-04-04                         XCRYPT(3)
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