11-29-2007
consult man pages for passwd: man passwd
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LEARN ABOUT CENTOS
xdecrypt
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 routines are present in libc 4.6.27 and later, and in glibc 2.1 and later.
BUGS
The prototypes are missing from the abovementioned include file.
SEE ALSO
cbc_crypt(3)
COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
2003-04-04 XCRYPT(3)