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)
Copyright 2003 walter harms (walter.harms@informatik.uni-oldenburg.de)
Distributed under GPL
this is the 3rd type of interface for cryptographic routines
1. encrypt() expects a bitfield
2. cbc_crypt() byte values
3. xencrypt() a hexstring
to bad to be true :(
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