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Ñîçäàåì íîâûé êîíòåéíåð<br />
Ïîìíè, ÷òî ëþáûå ïàðîëè âûáèâàþòñÿ<br />
èç æåðòâû óäàðàìè ñàïîã ;), ïîýòîìó<br />
àáñîëþòíîé áåçîïàñíîñòè íå ñóùåñòâóåò.<br />
íå÷íî). Íå çíàÿ ïàðîëü, óâèäåòü èíôó íà íîñèòåëå<br />
ïðàêòè÷åñêè íåâîçìîæíî. Íî ïîìíè,<br />
÷òî ëþáûå ïàðîëè âûáèâàþòñÿ èç æåðòâû<br />
óäàðàìè ñàïîã ;), ïîýòîìó àáñîëþòíîé áåçîïàñíîñòè<br />
íå ñóùåñòâóåò.<br />
ØÈÔÐÓÅÌ ÔÀÉËÎ<br />
Áûâàåò òàê, ÷òî öåëûé äèñê ñîçäàâàòü íåöåëåñîîáðàçíî.<br />
Íóæíî ëèøü çàøèôðîâàòü îòäåëüíûé<br />
ôàéë. Â Linux äëÿ ýòîãî ñóùåñòâóåò<br />
ìíîæåñòâî ñðåäñòâ, êîòîðûå òû ìîæåøü çàþçàòü,<br />
èñõîäÿ èç ñèòóàöèè. Ðàññìîòðèì<br />
ïðîñòîé âàðèàíò øèôðîâàíèÿ. Äîïóñòèì, òåáå<br />
íåîáõîäèìî çàêðèïòîâàòü ïðîñòîé ASCIIôàéë.<br />
Ïðè÷åì íà ñòîéêîñòü øèôðîâàíèÿ<br />
ìîæíî çàáèòü. Òåáå ïîäîéäåò îáû÷àÿ ïðîãðàììà<br />
äëÿ çàøèôðîâêè, òàêàÿ, êàê, íàïðèìåð,<br />
Code (ïîñëåäíÿÿ âåðñèÿ 0.03). Ñóòü åå -<br />
ãåíåðàöèÿ íåïîñòîÿííîãî êëþ÷à íà îñíîâå<br />
äâóõ ñèìâîëîâ, êîòîðûé çàìåùàåòñÿ ñèìâîëîì<br />
â ôàéëå. Ïåðâûé èç íèõ - ÷àñòü òâîåãî<br />
ïàðîëÿ, âòîðîé - èñòèííûé ôðàãìåíò ôàéëà.<br />
Íàäåæíîñòü øèôðîâàíèÿ ïðÿìî ïðîïîðöèîíàëüíà<br />
äëèíå ïàðîëÿ. Â óñòàíîâêå Code íåò<br />
íè÷åãî ñëîæíîãî. Ïðàâäà, ðàçðàáîò÷èêè çàáûëè<br />
ñíàáäèòü ïàêåò ñêðèïòàìè äëÿ make.<br />
×òîáû ñêîìïèëèòü ïðîãðàììó, íóæíî íàáðàòü<br />
äâå êîìàíäû â äèðåêòîðèè rus èëè eng<br />
(â çàâèñèìîñòè îò æåëàåìîé ëîêàëèçàöèè):<br />
# gcc code.c -o code<br />
# gcc uncode.c -o uncode<br />
À çàòåì çàþçàòü øèôðîâàëüùèê. Ê ïðèìåðó,<br />
çàêðèïòóåì /etc/passwd. Äëÿ ýòîãî ââåäåì<br />
ñëåäóþùóþ ñòðîêó:<br />
# ./code /etc/passwd myp4ssw0rd<br />
 òåêóùåì êàòàëîãå ïîÿâèòñÿ ôàéëèê<br />
passwd.code, êîòîðûé ÿâëÿåòñÿ ñâåæåçàêðèïòîâàííûì.<br />
Âåðíóòü åãî â ïðåæíåå ñîñòîÿíèå<br />
ìîæíî îáðàòíîé êîìàíäîé:<br />
# ./uncode ./passwd.code myp4ssw0rd<br />
Èñïîëüçîâàíèå óòèëèòû code<br />
Òîëüêî âîò èìÿ ôàéëà áóäåò äðóãèì -<br />
passwd.code.uncode :).<br />
ÁÈÍÀÐÍÛÉ ØÈÔÐ<br />
Òåïåðü îáðàòèì âíèìàíèå íà øèôðîâàíèå<br />
áèíàðíûõ ôàéëîâ. Äëÿ ýòîãî ÿ âûäåëÿþ<br />
Ó<br />
BestCrypt ñóùåñòâóåò çàìå÷àòåëüíàÿ îïöèÿ unlock, êîòîðàÿ<br />
ïîìîãàåò â ñëó÷àå, êîãäà ñèñòåìà íå áûëà êîððåêòíî ðàçìîíòèðîâàíà.<br />
Åñëè íå àíëîêíóòü êîíòåéíåð îò äåâàéñà, ïîâòîðíûé<br />
ìàóíò îñóùåñòâèòü íå ïîëó÷èòñÿ.