
å°é家ã«ãããšãã©ãããããã®çé£ã¯ãæ å ±ã»ãã¥ãªãã£ïŒISïŒã®åéã«ãããäž»èŠãªåé¡ã®1ã€ã§ãã
ä»ã®ISã®è åšãšã¯ç°ãªãããã©ãããããã®çé£ããŸãã¯ããã©ãã·ã¥ãã©ã€ãã®çé£ãã®åé¡ã®æ§è³ªã¯ããªãåå§çã§ãã ãŸããæ¶å€±ããããã€ã¹ã®äŸ¡å€ãæ°åç±³ãã«ã®ããŒã¯ããã£ãã«è¶ ããªãå Žåãããã€ã¹ã«ä¿åãããŠããæ å ±ã®äŸ¡å€ã¯æ°çŸäžåäœã§æž¬å®ãããããšããããããŸãã
DellãšPonemon Instituteã«ãããšãç±³åœã®ç©ºæž¯ã ãã§å¹Žé637,000å°ã®ã©ããããããæ¶æ» ããŠããŸãã ãã©ãã·ã¥ãã©ã€ããã¯ããã«å°ãããªããããã©ãã ãã®æ°ã®ãã©ãã·ã¥ãã©ã€ããæ¶ããããæ³åããŠãã ããã誀ã£ãŠãã©ãã·ã¥ãã©ã€ããèœãšãã®ã¯ç°¡åã§ãã
倧äŒæ¥ã®ããããããŒãžã£ãŒãææããã©ãããããããªããªããšããã®ãããªçé£ã«ããæ害ã¯æ°åäžãã«ã«éããå¯èœæ§ããããŸãã

ããªãèªèº«ãšããªãã®äŒç€Ÿãå®ãæ¹æ³ã¯ïŒ
Windowsãã¡ã€ã³ã®ã»ãã¥ãªãã£ã«é¢ããäžé£ã®èšäºãç¶ããŸãã ã·ãªãŒãºã®æåã®èšäºã§ã¯ãã»ãã¥ãªãã£ã§ä¿è·ããããã¡ã€ã³ãã°ãªã³ã®èšå®ã«ã€ããŠèª¬æãã2çªç®ã®èšäºã§ã¯ã¡ãŒã«ã¯ã©ã€ã¢ã³ãã§ã®å®å šãªããŒã¿è»¢éã®èšå®ã«ã€ããŠèª¬æããŸããã
- ããŒã¯ã³ã䜿çšããŠWindowsãã¡ã€ã³ãããå®å šã«ããæ¹æ³ã¯ïŒ ããŒã1
- ããŒã¯ã³ã䜿çšããŠWindowsãã¡ã€ã³ãããå®å šã«ããæ¹æ³ã¯ïŒ ããŒã2
ãã®èšäºã§ã¯ãããŒããã©ã€ãã«ä¿åãããŠããæ å ±ã®æå·åã®èšå®ã«ã€ããŠèª¬æããŸãã ããªãã¯ãããªã以å€ã®èª°ãããªãã®ã³ã³ãã¥ãŒã¿ã«ä¿åãããæ å ±ãèªãããšãã§ããªãããšã確èªããæ¹æ³ãç解ããã§ãããã
Windowsã«æ å ±ãå®å šã«ä¿åããã®ã«åœ¹ç«ã€çµã¿èŸŒã¿ããŒã«ãããããšãç¥ã£ãŠãã人ã¯ã»ãšãã©ããŸããã ãããã®1ã€ãæ€èšããŠãã ããã
確ãã«ãããªãã®äžäººã¯ãBitLockerããšããèšèãèããããšãããã§ãããã ãããäœã§ãããèŠãŠã¿ãŸãããã
BitLockerãšã¯äœã§ããïŒ
BitLockerïŒBitLockerãã©ã€ãæå·åã®æ£ç¢ºãªååïŒã¯ãMicrosoftãéçºããã³ã³ãã¥ãŒã¿ãŒãã£ã¹ã¯æå·åæè¡ã§ãã Windows Vistaã§åããŠç»å ŽããŸããã
BitLockerã䜿çšãããšãããŒããã©ã€ãããªã¥ãŒã ãæå·åã§ããŸããããåŸã«Windows 7ã§ããªã ãŒããã«ãã©ã€ããšãã©ãã·ã¥ãã©ã€ããæå·åããããã«èšèšãããåæ§ã®BitLocker To Goãã¯ãããžãç»å ŽããŸããã
BitLockerã¯ãWindows Professionalããã³Windowsã®ãµãŒããŒããŒãžã§ã³ã®æšæºã³ã³ããŒãã³ãã§ããã€ãŸããäŒæ¥ã§ã®äœ¿çšã®ã»ãšãã©ã®å ŽåãBitLockerã¯æ¢ã«å©çšå¯èœã§ãã ãã以å€ã®å Žåã¯ãWindowsã©ã€ã»ã³ã¹ãProfessionalã«ã¢ããã°ã¬ãŒãããå¿ èŠããããŸãã
BitLockerã¯ã©ã®ããã«æ©èœããŸããïŒ
ãã®ãã¯ãããžãŒã¯ãAESïŒAdvanced Encryption StandardïŒã¢ã«ãŽãªãºã ã䜿çšããŠå®è¡ããããã«ããªã¥ãŒã æå·åã«åºã¥ããŠããŸãã æå·åããŒã¯å®å šã«ä¿åããå¿ èŠããããããã«ã¯BitLockerã«ããã€ãã®ã¡ã«ããºã ããããŸãã
æãç°¡åã§ãããæãå®å šã§ãªãæ¹æ³ã¯ãã¹ã¯ãŒãã§ãã ããŒã¯æ¯ååãæ¹æ³ã§ãã¹ã¯ãŒãããååŸãããŸãããããã£ãŠã誰ãããã¹ã¯ãŒããèŠã€ããå Žåãæå·åããŒã¯æ¢ç¥ã«ãªããŸãã
ããŒãã¯ãªã¢ãªåœ¢åŒã§ä¿åããªãããã«ãTPMïŒTrusted Platform ModuleïŒããŸãã¯RSA 2048ã¢ã«ãŽãªãºã ããµããŒãããæå·åããŒã¯ã³ãŸãã¯ã¹ããŒãã«ãŒãã§æå·åã§ããŸãã
TPM-äž»ã«æå·åããŒã䜿çšããŠãã»ãã¥ãªãã£ã«é¢é£ããåºæ¬æ©èœãå®è£ ããããã«èšèšããããããã
TPMã¯éåžžãã³ã³ãã¥ãŒã¿ãŒã®ãã¶ãŒããŒãã«ã€ã³ã¹ããŒã«ãããŸããããã·ã¢ã§çµ±åTPMãæèŒããã³ã³ãã¥ãŒã¿ãŒãè³Œå ¥ããããšã¯éåžžã«å°é£ã§ããããã¯ãFSBéç¥ãªãã§ããã€ã¹ãæãåœã«èŒžå ¥ããããšãçŠæ¢ãããŠããããã§ãã
ã¹ããŒãã«ãŒããŸãã¯ããŒã¯ã³ã䜿çšããŠãã£ã¹ã¯ã®ããã¯ã解é€ããããšã¯ããã®ããã»ã¹ããã€èª°ãå®è¡ããããå¶åŸ¡ããæãå®å šãªæ¹æ³ã®1ã€ã§ãã ãã®å Žåãããã¯ã解é€ããã«ã¯ãã¹ããŒãã«ãŒãèªäœãšãã®PINã³ãŒãã®äž¡æ¹ãå¿ èŠã§ãã
BitLockerã®äœæ¥ã¹ããŒã ïŒ
- æ¬äŒŒä¹±æ°ãžã§ãã¬ãŒã¿ã䜿çšããŠBitLockerãã¢ã¯ãã£ãã«ãããšãã¡ã€ã³ãããã·ãŒã±ã³ã¹ãäœæãããŸãã ããã¯ããªã¥ãŒã æå·åããŒ-FVEKïŒãã«ããªã¥ãŒã æå·åããŒïŒã§ãã åã»ã¯ã¿ãŒã®ã³ã³ãã³ããæå·åããŸãã FVEKããŒã¯ãæãå³éã«ä¿è·ãããŠããŸãã
- FVEKã¯ãVMKããŒïŒããªã¥ãŒã ãã¹ã¿ãŒããŒïŒã䜿çšããŠæå·åãããŸãã FVEKããŒïŒVMKã§æå·åïŒã¯ãããªã¥ãŒã ã®ã¡ã¿ããŒã¿ã®äžã§ãã£ã¹ã¯ã«ä¿åãããŸãã åæã«ã埩å·åããã圢åŒã§ãã£ã¹ã¯ã«å°éããããšã¯ãããŸããã
- VMKèªäœãæå·åãããŸãã æå·åã®æ¹æ³ã¯ãŠãŒã¶ãŒãéžæããŸãã
- VMKããŒã¯ãæå·åã¹ããŒãã«ãŒããŸãã¯ããŒã¯ã³ã«ä¿åãããŠããSRKããŒïŒã¹ãã¬ãŒãžã«ãŒãããŒïŒã䜿çšããŠããã©ã«ãã§æå·åãããŸãã åæ§ã«ãããã¯TPMã§ãçºçããŸãã
ãšããã§ãBitLockerã®ã·ã¹ãã ãã©ã€ãæå·åããŒã¯ãã¹ããŒãã«ãŒããŸãã¯ããŒã¯ã³ã§ä¿è·ã§ããŸããã ããã¯ããã³ããŒã®ã©ã€ãã©ãªãã¹ããŒãã«ãŒããšããŒã¯ã³ãžã®ã¢ã¯ã»ã¹ã«äœ¿çšãããŠããããã§ãããOSãèªã¿èŸŒãåã¯ãã¡ãã䜿çšã§ããŸããã
TPMããªãå ŽåãBitLockerã¯ã·ã¹ãã ããŒãã£ã·ã§ã³ããŒãUSBã¹ãã£ãã¯ã«ä¿åããããšãææ¡ããŸãããããã¯ãã¡ããæåã®ã¢ã€ãã¢ã§ã¯ãããŸããã ã·ã¹ãã ã«TPMããªãå Žåãã·ã¹ãã ãã£ã¹ã¯ã®æå·åã¯ãå§ãããŸããã
äžè¬ã«ãã·ã¹ãã ãã©ã€ããæå·åããããšã¯æªãèãã§ãã é©åã«èšå®ãããšããã¹ãŠã®éèŠãªããŒã¿ãã·ã¹ãã ãšã¯å¥ã«ä¿åãããŸãã ããã¯ã¢ããã®èŠ³ç¹ããã¯ãå°ãªããšããã䟿å©ã§ãã ããã«ãã·ã¹ãã ãã¡ã€ã«ã®æå·åã¯ã·ã¹ãã ã®å šäœçãªããã©ãŒãã³ã¹ãäœäžãããæå·åããããã¡ã€ã«ã䜿çšããæå·åãããŠããªãã·ã¹ãã ãã£ã¹ã¯ã®åŠçã¯é床ãèœãšãããšãªãè¡ãããŸãã - ä»ã®éã·ã¹ãã ããã³ãªã ãŒããã«ãã©ã€ãã®æå·åããŒã¯ãTPMãšåæ§ã«ã¹ããŒãã«ãŒããŸãã¯ããŒã¯ã³ã§ä¿è·ã§ããŸãã
TPMã¢ãžã¥ãŒã«ãŸãã¯ã¹ããŒãã«ãŒãããªãå ŽåãSRKã®ä»£ããã«ãå ¥åãããã¹ã¯ãŒãã«ãã£ãŠçæãããããŒãVMKããŒã®æå·åã«äœ¿çšãããŸãã
æå·åãããããŒããã£ã¹ã¯ããèµ·åããå Žåãã·ã¹ãã ã¯ãã¹ãŠã®å¯èœãªããŒã¹ãã¢ãããŒãªã³ã°ããŸã-TPMã®ãã§ãã¯ãUSBããŒãã®ãã§ãã¯ããŸãã¯å¿ èŠã«å¿ããŠãŠãŒã¶ãŒã®ç¢ºèªïŒããããå埩ïŒã ããŒã¹ãã¢ãæ€åºãããšãWindowsã¯VMKããŒã解èªã§ããŸããVMKããŒã¯FVEKããŒã解èªããŸããFVEKããŒã¯ãã£ã¹ã¯äžã®ããŒã¿ãæ¢ã«è§£èªããŸãã

ããªã¥ãŒã ã®åã»ã¯ã¿ãŒã¯åå¥ã«æå·åãããŸãããæå·åããŒã®äžéšã¯ãã®ã»ã¯ã¿ãŒã®æ°ã«ãã£ãŠæ±ºãŸããŸãã ãã®çµæãåãæå·åãããŠããªãããŒã¿ãå«ã2ã€ã®ã»ã¯ã¿ãŒã¯æå·åããã圢åŒã§ç°ãªã£ãŠèŠãããããæ¢ç¥ã®ããŒã¿ãæžã蟌ãã§åŸ©å·åããŠæå·åããŒã決å®ããããã»ã¹ãå€§å¹ ã«è€éã«ãªããŸãã
BitLockerã¯ãFVEKãVMKãããã³SRKã«å ããŠã念ã®ããã«äœæãããå¥ã®çš®é¡ã®ããŒã䜿çšããŸãã ãããã¯å埩ããŒã§ãã
ç·æ¥äºæ ïŒãŠãŒã¶ãŒãããŒã¯ã³ã倱ã£ããPINã³ãŒããå¿ãããªã©ïŒã®å ŽåãæåŸã®æé ã§BitLockerã¯å埩ããŒã®äœæãææ¡ããŸãã äœæã®æåŠã¯ã·ã¹ãã ã§æäŸãããŸããã
ããŒããã©ã€ãã§ããŒã¿æå·åãæå¹ã«ããæ¹æ³
ããŒããã©ã€ãäžã®ããªã¥ãŒã ã®æå·åããã»ã¹ãéå§ããåã«ããã®æé ã«æéããããããšãèæ ®ããããšãéèŠã§ãã ãã®æéã¯ãããŒããã©ã€ãäžã®æ å ±ã®éã«ãã£ãŠç°ãªããŸãã
æå·åãŸãã¯æå·å解é€äžã«ã³ã³ãã¥ãŒã¿ãŒãã·ã£ããããŠã³ããããäŒæ¢ç¶æ ã«ãªã£ãå Žåããããã®ããã»ã¹ã¯ãWindowsã次ã«èµ·åãããšãã«åæ¢ç¹ããåéãããŸãã
æå·åã®ããã»ã¹ã§ããWindowsã䜿çšã§ããŸããããã®ããã©ãŒãã³ã¹ãæºè¶³ãããããšã¯ã§ããŸããã ãã®çµæãæå·ååŸããã£ã¹ã¯ã®ããã©ãŒãã³ã¹ã¯çŽ10ïŒ äœäžããŸãã
ã·ã¹ãã ã§BitLockerã䜿çšå¯èœãªå Žåãæå·åãããã©ã€ãã®ååãå³ã¯ãªãã¯ãããšãéãã¡ãã¥ãŒã«[BitLockerãæå¹ã«ãã] ã衚瀺ãããŸãã
ãµãŒããŒããŒãžã§ã³ã®Windowsã§ã¯ã BitLockerãã©ã€ãæå·åã®åœ¹å²ãè¿œå ããå¿ èŠããããŸãã
éã·ã¹ãã ããªã¥ãŒã ã®æå·åãæ§æããæå·åããŒã¯ã³ã䜿çšããŠæå·åããŒãä¿è·ããŸãã
ActiveäŒç€ŸãäœæããããŒã¯ã³ã䜿çšããŸãã ç¹ã«ãããŒã¯ã³Rutoken EDS PKI ã
I. PKI Rutoken EDSãæºåããŸãã
ã»ãšãã©ã®éåžžæ§æãããWindowsã·ã¹ãã ã§ã¯ãRutokenã®æåã®æ¥ç¶åŸãPKI EDSãèªåçã«ããŠã³ããŒããããã¢ã¯ãã£ãäŒæ¥ã§ããAktiv Rutokenãããã©ã€ããŒã«ãã£ãŠè£œé ãããããŒã¯ã³ãæäœããããã®ç¹å¥ãªã©ã€ãã©ãªãã€ã³ã¹ããŒã«ãããŸãã
ãã®ãããªã©ã€ãã©ãªã®ã€ã³ã¹ããŒã«ããã»ã¹ã¯æ¬¡ã®ãšããã§ãã

Aktiv Rutokenãããã©ã€ããŒã©ã€ãã©ãªã®å¯çšæ§ã¯ã ããã€ã¹ãããŒãžã£ãŒã§ç¢ºèªã§ããŸãã

äœããã®çç±ã§ã©ã€ãã©ãªã®ããŠã³ããŒããšã€ã³ã¹ããŒã«ãè¡ãããªãã£ãå Žåã¯ãWindowsãããçšã®Rootokenãã©ã€ããŒãã€ã³ã¹ããŒã«ããå¿ èŠããããŸã ã
IIã BitLockerã䜿çšããŠãã£ã¹ã¯äžã®ããŒã¿ãæå·åããŸãã
ãã£ã¹ã¯ã®ååãã¯ãªãã¯ãã[ BitLockerããªã³ã«ãã]ãéžæããŸãã

åè¿°ããããã«ããã©ã€ãã®æå·åããŒãä¿è·ããããã«ããŒã¯ã³ã䜿çšããŸãã
BitLockerã§ããŒã¯ã³ãŸãã¯ã¹ããŒãã«ãŒãã䜿çšããã«ã¯ãRSA 2048ããŒãšèšŒææžãå«ãŸããŠããå¿
èŠãããããšãç解ããããšãéèŠã§ãã
Windowsãã¡ã€ã³ã§èªèšŒå±ãµãŒãã¹ã䜿çšããå Žåã蚌ææžãã³ãã¬ãŒãã«ã¯ããã£ã¹ã¯æå·åã蚌ææžã®ã¹ã³ãŒããå«ããå¿ èŠããããŸãïŒWindowsãã¡ã€ã³ã»ãã¥ãªãã£ã«é¢ããèšäºã·ãªãŒãºã®æåã®éšåã§èªèšŒå±ã®èšå®ã«ã€ããŠè©³ãã説æããŸãïŒã
ãã¡ã€ã³ããªãå ŽåããŸãã¯èšŒææžã®çºè¡ããªã·ãŒãå€æŽã§ããªãå Žåã¯ãèªå·±çœ²å蚌ææžã䜿çšããŠããã¯ã¢ããã«ãŒããåãããšãã§ããŸã ãèªå·±çœ²å蚌ææžã®äœææ¹æ³ã®è©³çŽ°ã«ã€ããŠã¯ã ãã¡ããã芧ãã ãã ã
次ã«ã察å¿ãããã§ãã¯ããã¯ã¹ãèšå®ããŸãã

次ã®æé ã§ã¯ãå埩ããŒã®ä¿åæ¹æ³ãéžæããŸãïŒ å埩ããŒã®å°å·ãéžæããããšããå§ãããŸã ïŒã

å埩ããŒãå°å·ãããçšçŽã¯ãå®å šãªå Žæãã§ããã°é庫ã«ä¿ç®¡ããå¿ èŠããããŸãã

次ã«ãæ¢ã«ããã€ãã®è²ŽéãªããŒã¿ãå«ãŸããŠãããã©ã€ãã«äœ¿çšããæå·åã¢ãŒããéžæããŸãïŒ2çªç®ã®ãªãã·ã§ã³ãéžæããããšããå§ãããŸãïŒã

次ã®ã¹ãããã¯ããã©ã€ãã®æå·åããã»ã¹ãéå§ããããšã§ãã ãã®ããã»ã¹ã®å®äºåŸãã·ã¹ãã ã®åèµ·åãå¿ èŠã«ãªãå ŽåããããŸãã
æå·åãæå¹ã«ãªããšãæå·åããããã£ã¹ã¯ã®ã¢ã€ã³ã³ãå€ãããŸãã

ãããŠä»ããã®ãã£ã¹ã¯ãéãããšãããšãã·ã¹ãã ã¯ããŒã¯ã³ãæ¿å ¥ããŠPINã³ãŒããå ¥åããããã«æ±ããŠããŸãã

BitLockerãšTPMã®å±éãšæ§æã¯ãWMIããŒã«ãŸãã¯Windows PowerShellã¹ã¯ãªããã䜿çšããŠèªååã§ããŸãã ã¹ã¯ãªããã®å®è£ æ¹æ³ã¯ç°å¢ã«ãã£ãŠç°ãªããŸãã ãã®èšäºã§ã¯ãWindows PowerShellã®BitLockerã®ã³ãã³ãã«ã€ããŠèª¬æããŸã ã
ããŒã¯ã³ã倱ãããå ŽåãBitLockerã«ãã£ãŠæå·åãããããŒã¿ãå埩ããæ¹æ³ã¯ïŒ
æå·åãããããŒã¿ãWindowsã§éãããå Žå
ãããè¡ãã«ã¯ã以åã«å°å·ããå埩ããŒãå¿ èŠã§ãã é©åãªãã£ãŒã«ãã«å ¥åããã ãã§ãæå·åãããã»ã¯ã·ã§ã³ãéããŸãã

GNU / Linuxããã³Mac OS Xã·ã¹ãã ã§æå·åãããããŒã¿ãéãããå Žå
ãããè¡ãã«ã¯ãDisLockerãŠãŒãã£ãªãã£ãšå埩ããŒãå¿ èŠã§ãã
DisLockerãŠãŒãã£ãªãã£ã¯ã次ã®2ã€ã®ã¢ãŒãã§åäœããŸãã
- FILE-BitLockerã§æå·åãããã»ã¯ã·ã§ã³å šäœããã¡ã€ã«ã«åŸ©å·åãããŸãã
- FUSE-ã·ã¹ãã ãã¢ã¯ã»ã¹ãããããã¯ã®ã¿ã埩å·åãããŸãã
ããšãã°ãLinuxãªãã¬ãŒãã£ã³ã°ã·ã¹ãã ãšFUSEãŠãŒãã£ãªãã£ã¢ãŒãã䜿çšããŸãã
äžè¬çãªLinuxãã£ã¹ããªãã¥ãŒã·ã§ã³ã®ææ°ããŒãžã§ã³ã§ã¯ãdislockerããã±ãŒãžã¯ãã§ã«ãã£ã¹ããªãã¥ãŒã·ã§ã³ã«å«ãŸããŠããŸããããšãã°ãUbuntuã§ã¯ãããŒãžã§ã³16.10以éã§ãã
äœããã®çç±ã§dislockerããã±ãŒãžããªãã£ãå Žåã¯ã DisLockerãŠãŒãã£ãªãã£ãããŠã³ããŒãããŠã³ã³ãã€ã«ããå¿ èŠããããŸãã
tar -xvjf dislocker.tar.gz
INSTALL.TXTãã¡ã€ã«ãéããã€ã³ã¹ããŒã«ããå¿ èŠãããããã±ãŒãžã確èªããŸãã
ãã®å Žåãlibfuse-devããã±ãŒãžãã€ã³ã¹ããŒã«ããå¿ èŠããããŸãã
sudo apt-get install libfuse-dev
ããã±ãŒãžã®çµã¿ç«ãŠãé²ããŸãããã srcãã©ã«ããŒã«ç§»åããmakeããã³make installã³ãã³ãã䜿çšããŸãã
cd src/ make make install
ãã¹ãŠãã³ã³ãã€ã«ããããïŒãŸãã¯ããã±ãŒãžãã€ã³ã¹ããŒã«ãããïŒãæ§æãé²ããŸãããã
mntãã©ã«ããŒã«ç§»åãããã®äžã«2ã€ã®ãã©ã«ããŒãäœæããŸãã
- æå·åããŒãã£ã·ã§ã³âæå·åããŒãã£ã·ã§ã³çšã
- 埩å·åãããããŒãã£ã·ã§ã³-埩å·åãããããŒãã£ã·ã§ã³çšã
cd /mnt mkdir Encrypted-partition mkdir Decrypted-partition
æå·åãããããŒãã£ã·ã§ã³ãèŠã€ããŸãã ãŠãŒãã£ãªãã£ã䜿çšããŠåŸ©å·åããæå·åããŒãã£ã·ã§ã³ãã©ã«ããŒã«ç§»åããŸãã
dislocker -r -V /dev/sda5 -p recovery_key /mnt/Encrypted-partition</b>( recovery_key )
æå·åããŒãã£ã·ã§ã³ãã©ã«ããŒã«ãããã¡ã€ã«ã®ãªã¹ãã衚瀺ããŸãã
ls Encrypted-partition/
次ã®ã³ãã³ããå ¥åããŠãããŒãã£ã·ã§ã³ãããŠã³ãããŸãã
mount -o loop Driveq/dislocker-file Decrypted-partition/
埩å·åãããããŒãã£ã·ã§ã³ã衚瀺ããã«ã¯ãæå·åãããããŒãã£ã·ã§ã³ãã©ã«ãã«ç§»åããŸãã
èŠçŽãã
BitLockerã§ããªã¥ãŒã æå·åãæå¹ã«ããã®ã¯ç°¡åã§ãã ããã¯ãã¹ãŠãå€ãã®åŽåããããã«ç¡æã§è¡ãããŸãïŒãã¡ããããããã§ãã·ã§ãã«çãŸãã¯ãµãŒããŒçã®Windowsãå©çšå¯èœã§ããã°ïŒã
ãã£ã¹ã¯ãæå·åããæå·åããŒãä¿è·ããã«ã¯ãæå·åããŒã¯ã³ãŸãã¯ã¹ããŒãã«ãŒãã䜿çšã§ããŸããããã«ãããã»ãã¥ãªãã£ã¬ãã«ãå€§å¹ ã«åäžããŸãã