xencrypt, xdecrypt, passwd2des — RFS password encryption
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
into a DES key.
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
passwd2des(), and outputs the result again
secret as a hex
string of the same length.
performs the converse operation.
For an explanation of the terms used in this section, see attributes(7).
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Copyright 2003 walter harms (walter.harmsinformatik.uni-oldenburg.de)
Distributed under GPL
this is the 3rd type of interface for cryptographic routines
1. encrypt() expects a bit field
2. cbc_crypt() byte values
3. xencrypt() a hexstring
to bad to be true :(