2008-10-02 19:45:51 -04:00
|
|
|
! Copyright (C) 2008 Doug Coleman.
|
|
|
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
|
|
|
USING: kernel math sequences fry ;
|
2007-10-07 00:01:26 -04:00
|
|
|
IN: crypto.xor
|
|
|
|
|
|
2008-10-02 19:45:51 -04:00
|
|
|
: mod-nth ( n seq -- elt ) [ length mod ] [ nth ] bi ;
|
2007-10-07 00:01:26 -04:00
|
|
|
|
2008-10-02 19:45:51 -04:00
|
|
|
ERROR: empty-xor-key ;
|
|
|
|
|
|
|
|
|
|
: xor-crypt ( seq key -- seq' )
|
2015-08-13 19:13:05 -04:00
|
|
|
[ empty-xor-key ] when-empty
|
2009-10-06 21:29:43 -04:00
|
|
|
[ dup length iota ] dip '[ _ mod-nth bitxor ] 2map ;
|
