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);
WARNING: Do not use these functions in new code. They do not achieve any
type of acceptable cryptographic security guarantees.
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 functions are available in glibc since version 2.1.
For an explanation of the terms used in this section, see
attributes(7).
| Interface |
Attribute |
Value |
| passwd2des (), xencrypt (), xdecrypt () |
Thread safety |
MT-Safe |
The prototypes are missing from the abovementioned include file.
cbc_crypt(3)