xencrypt, xdecrypt, passwd2des - RFS password encryption
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
arbitrary length and fills a character array key
of length 8. The array
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
into a DES key.
() 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
outputs the result again in secret
as a hex string of the same length.
() function performs the converse operation.
The functions xencrypt
() and xdecrypt
() return 1 on success and 0
These functions are available in glibc since version 2.1.
The prototypes are missing from the abovementioned include file.
This page is part of release 3.74 of the Linux man-pages
description of the project, information about reporting bugs, and the latest
version of this page, can be found at