The Research Of Information Hiding Technology Based On Portable Executable File Format

With　the　development　of　computer　software,　hardware,　network　technologies　and　the　applications　of　internet,　information　technologies　which　contributes　to　the　development　of　everything　has　been　put　into　applications　in　all　kinds　of　work.　　But　at　the　same　time,　there　exist　some　loopholes　and　security　 problems　and　stand　the　possibilities　of　information　being　illegal　intercepted,　modified　and　ravaged.　The　computer　viru　and　damage　of　net　hacker　is　also　a　serious　problem.　All　of　these　problems　are　becoming　the　menaces　of　informations,　with　an　effect　to　influence　national　security,　economic　development,　and　personal　profit.　　Although　cryptology　has　already　developed　and　played　an　important　role　in　information　security,　cryptology　is　coming　to　plunge　into　difficult　situations　that　have　to　keep　development　by　improving　the　length　of　key　and　various　algorithms.　Moreover,　the　cryptology　can　not　solve　all　the　problems　of　information　security.　The　overseas　or　domestic　experts　and　scholars　find　a　way　to　solve　the　problems　and　protect　the　informations　by　the　technology　of　information　hiding.　Now,　information　hiding　technology　is　developing,　the　main　research　results　is　only　limited　to　digital　watermarks,　there　still　exist　some　problems　that　had　not　been　solved.　The　research　work　of　this　article　is　developed　under　this　background,　which　try　to　solve　the　problems　by　 using　portable　executable　file　format　file　as　the　 embedded　information　carrier,　embedding　the　information　to　PE　file.　Methods　of　embedding　information　are　developed　in　this　article,　which　make　use　of　the　redundant　spaces,　redundant　structures　and　the　static　spaces　allocated　to　strings.　The　methods　of　protecting　the　hiding　informations　are　introduced　in　this　article.　One　takes　advantages　of　the　information　disguising　technology,　which　got　different　explain　results　by　the　way　of　different　interprets　to　prevent　the　carried　information　from　being　correctly　understood　or　modified.　The　other　is　availed　of　the　methods　of　secret　sharing,　which　relocated　the　original　embedded　informations　into　some　carriers.　 When　 some　embedded　informations　are　damaged,　others　can　be　used　to　recover　the　original　embedded　information　to　keep　the　embedded　data　completely.　The　two　secret　sharing　schemas　are　deduced　in　this　article,　which　using　the　characters　of　logic　functions　of　Boolean　algebra.　How　to　relocate　the　embedded　data　in　the　two　secret　sharing　schemas　are　also　introduced.