'''BitLocker''' je funkcija uključena u Microsoft Windows, a koja vrši [[FDE|šifrovanje čitavog diska]]. Uključena je u [[Microsoft Windows]] verzije počevši sa [[Windows Vista]]. Dizajniran je za zaštitu podataka pružanjem [[Enkripcija|enkripcije]] čitavog datotečnog sistema. Podrazumijevani algoritam je AES enkripcija u [[Šifrirani blokovi|šifriranim blokovima]] (CBC) ili XTS modu<ref name=":0">{{Cite web|url=https://technet.microsoft.com/itpro/windows/whats-new/whats-new-windows-10-version-1507-and-1511|title=What's new in Windows 10, versions 1507 and 1511|last=Hakala|first=Trudy|date=29. 11. 2016|website=[[Microsoft TechNet|TechNet]]|publisher=[[Microsoft]]|accessdateaccess-date=15. 12. 2016}}</ref> s 128-bitnim ili 256-bitnim [[Key (cryptography)|ključem]].<ref>{{Cite web|url=https://technet.microsoft.com/en-us/library/cc766200(v=WS.10).aspx#BKMK_Form|title=Windows BitLocker Drive Encryption Frequently Asked Questions|date=22. 3. 2012|website=TechNet Library|publisher=Microsoft|accessdateaccess-date=5. 9. 2007}}</ref><ref>{{Cite journal|last=Ferguson|first=Niels|date=august 2006|title=AES-CBC + Elephant Diffuser: A Disk Encryption Algorithm for Windows Vista|url=http://download.microsoft.com/download/0/2/3/0238acaf-d3bf-4a6d-b3d6-0a0be4bbb36e/BitLockerCipher200608.pdf|format=PDF|publisher=Microsoft|access-date=22. 2. 2008}}</ref> CBC se ne koristi preko cijelog diska; već se primjenjuje se na svaki pojedinačni [[Disk sektor|sektor]].<ref>{{Cite web|url=https://css.csail.mit.edu/6.858/2012/readings/bitlocker.pdf|title=AES-CBC + Elephant diffuser: A Disk Encryption Algorithm for Windows Vista|last=Ferguson|first=Niels|date=august 2006|website=|publisher=|accessdateaccess-date=7. 10. 2016}}</ref>
BitLocker je dostupan na:
* Ultimate i Enterprise izdanja [[Windows Vista|operativnih sistema Windows Vista]] i [[Windows 7]]
* Pro i Enterprise izdanja [[Windows 8]] i [[Windows 8.1|8.1]] <ref name="Win8Server2012">{{Cite web|url=https://technet.microsoft.com/en-us/library/hh831412.aspx|title=What's New in BitLocker for Windows 8 and Windows Server 2012|date=15. 2. 2012|website=TechNet Library|publisher=[[Microsoft]]|accessdateaccess-date=2. 3. 2012}}</ref><ref name=":1">{{Cite web|url=https://technet.microsoft.com/en-us/library/cc766200(v=WS.10).aspx#BKMK_Vista|title=Windows BitLocker Drive Encryption Frequently Asked Questions|date=22. 3. 2012|website=TechNet Library|publisher=Microsoft|accessdateaccess-date=5. 9. 2007}}</ref>
* Pro, Enterprise i Education izdanja [[Windows 10|operativnog]] sistema [[Windows 10]] <ref name="Win10editions">{{Cite web|url=https://www.microsoft.com/en-ca/WindowsForBusiness/Compare|title=Compare Windows 10 Editions|website=Windows for Business|publisher=Microsoft|archiveurlarchive-url=https://web.archive.org/web/20161117002223/https://www.microsoft.com/en-ca/WindowsForBusiness/Compare|archivedatearchive-date=17. 11. 2016}}</ref>
* Windows Server 2008 <ref name="Server2008">{{Cite web|url=https://technet.microsoft.com/en-us/library/cc725719(v=ws.10).aspx|title=BitLocker Drive Encryption in Windows Vista|last=|first=|date=|website=TechNet|publisher=Microsoft|archiveurlarchive-url=https://web.archive.org/web/20161117004047/https://technet.microsoft.com/en-us/library/cc725719%28v%3Dws.10%29.aspx|archivedatearchive-date=17. 11. 2016|url-status=live}}</ref> i noviji<ref name="Win8Server2012" /><ref name="Server2008R2">{{Cite web|url=https://technet.microsoft.com/library/cc732774.aspx|title=BitLocker Drive Encryption Overview|website=TechNet|publisher=Microsoft|archiveurlarchive-url=https://web.archive.org/web/20161117004346/https://technet.microsoft.com/library/cc732774.aspx|archivedatearchive-date=17. 11. 2016}}</ref>
