Originální popis anglicky:
xencrypt, xdecrypt, passwd2des - RFS password encryption
Návod, kniha: RPC cryptography
#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.
cbc_crypt(3)
