function?c=calfa（n）
%------------------------------------------------------------------------------------------
%The?following?program?codes?a?number?n?like?a?word?in?base?26
%------------------------------------------------------------------------------------------
if?length（n）==1
????x=nbn（n26）;
????d=length（x）;
????y=[‘a‘‘b‘‘c‘‘d‘‘e‘‘f‘‘g‘‘h‘‘i‘‘j‘‘k‘‘l‘‘m‘‘n‘‘o‘‘p‘‘q‘‘r‘‘s‘‘t‘‘u‘‘v‘‘w‘‘x‘‘y‘‘z‘];
????i=1;c=[];
????while?i????????c=[cy（x（i）+1）];i=i+1;
????end
????if?i==d
????????c=[cy（x（d）+1）];
????end
else
????c1=calfa（n（1））;
????c2=calfa（n（2））;
????c=[c1c2];
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????626??2009-11-06?21:51??lsb+crypt\calfa.m

?????文件????????791??2009-11-06?21:59??lsb+crypt\dalfa.m

?????文件???????1720??2009-11-10?11:30??lsb+crypt\dctext.txt

?????文件???????1668??2009-11-10?11:29??lsb+crypt\desordtext.m

?????文件??????70285??2009-11-10?10:55??lsb+crypt\Ferrari?F50?1.jpg

?????文件?????473537??2009-11-10?11:19??lsb+crypt\Ferrari?F50?1H.png

?????文件???????2596??2009-11-10?11:29??lsb+crypt\hidetc.m

?????文件????????695??2009-11-07?21:12??lsb+crypt\keyexpansion.m

?????文件?????447332??2009-11-10?11:17??lsb+crypt\lena.H.png

?????文件?????786572??2009-11-01?20:53??lsb+crypt\lena.tiff

?????文件?????178279??2009-11-10?11:29??lsb+crypt\lena2.H.png

?????文件?????264584??2009-11-05?23:24??lsb+crypt\lena2.tiff

?????文件???????6351??2009-11-07?22:51??lsb+crypt\mytry.asv

?????文件????????718??2009-11-05?18:58??lsb+crypt\nbn.m

?????文件????????834??2009-11-06?21:55??lsb+crypt\randpermut.m

?????文件???????1459??2009-11-07?21:27??lsb+crypt\reordtext.asv

?????文件???????1539??2009-11-10?11:20??lsb+crypt\reordtext.m

?????文件???????2651??2009-11-10?11:17??lsb+crypt\secret.txt

?????文件???????1165??2009-11-10?11:29??lsb+crypt\seektc.m

?????目錄??????????0??2009-11-11?07:04??lsb+crypt

-----------?---------??----------?-----??----

??????????????2243402????????????????????20