How do you check if a hard drive was encrypted with software or hardware when using BitLocker?











up vote
18
down vote

favorite
1












Due to the recent security findings in that probably most SSDs implement encryption in a completely naive and broken way, I want to check which of my BitLocker machines are using hardware encryption and which ones are using software.



I found a way to disable the use of hardware encryption, but I can't figure out how to check if I'm using hardware encryption (in which case, I'll have to re-encrypt the drive). How do I do ti?



I'm aware of manage-bde.exe -status which gives me an output such as:



Disk volumes that can be protected with
BitLocker Drive Encryption:
Volume C: [Windows]
[OS Volume]

Size: 952.62 GB
BitLocker Version: 2.0
Conversion Status: Used Space Only Encrypted
Percentage Encrypted: 100.0%
Encryption Method: XTS-AES 128
Protection Status: Protection On
Lock Status: Unlocked
Identification Field: Unknown
Key Protectors:
TPM
Numerical Password


but I don't know if the information I want is in this screen.










share|improve this question






















  • Do you have a reference for the claim about weaknesses in hardware crypto implementations? Sounds like a good read.
    – Nat
    yesterday






  • 2




    @Nat: See this advisory for details. Incidentally, it also solves OP's problem.
    – Kevin
    yesterday








  • 2




    @Nat: I believe this is the source of the information: ru.nl/english/news-agenda/news/vm/icis/cyber-security/2018/…
    – pupeno
    22 hours ago















up vote
18
down vote

favorite
1












Due to the recent security findings in that probably most SSDs implement encryption in a completely naive and broken way, I want to check which of my BitLocker machines are using hardware encryption and which ones are using software.



I found a way to disable the use of hardware encryption, but I can't figure out how to check if I'm using hardware encryption (in which case, I'll have to re-encrypt the drive). How do I do ti?



I'm aware of manage-bde.exe -status which gives me an output such as:



Disk volumes that can be protected with
BitLocker Drive Encryption:
Volume C: [Windows]
[OS Volume]

Size: 952.62 GB
BitLocker Version: 2.0
Conversion Status: Used Space Only Encrypted
Percentage Encrypted: 100.0%
Encryption Method: XTS-AES 128
Protection Status: Protection On
Lock Status: Unlocked
Identification Field: Unknown
Key Protectors:
TPM
Numerical Password


but I don't know if the information I want is in this screen.










share|improve this question






















  • Do you have a reference for the claim about weaknesses in hardware crypto implementations? Sounds like a good read.
    – Nat
    yesterday






  • 2




    @Nat: See this advisory for details. Incidentally, it also solves OP's problem.
    – Kevin
    yesterday








  • 2




    @Nat: I believe this is the source of the information: ru.nl/english/news-agenda/news/vm/icis/cyber-security/2018/…
    – pupeno
    22 hours ago













up vote
18
down vote

favorite
1









up vote
18
down vote

favorite
1






1





Due to the recent security findings in that probably most SSDs implement encryption in a completely naive and broken way, I want to check which of my BitLocker machines are using hardware encryption and which ones are using software.



I found a way to disable the use of hardware encryption, but I can't figure out how to check if I'm using hardware encryption (in which case, I'll have to re-encrypt the drive). How do I do ti?



I'm aware of manage-bde.exe -status which gives me an output such as:



Disk volumes that can be protected with
BitLocker Drive Encryption:
Volume C: [Windows]
[OS Volume]

Size: 952.62 GB
BitLocker Version: 2.0
Conversion Status: Used Space Only Encrypted
Percentage Encrypted: 100.0%
Encryption Method: XTS-AES 128
Protection Status: Protection On
Lock Status: Unlocked
Identification Field: Unknown
Key Protectors:
TPM
Numerical Password


but I don't know if the information I want is in this screen.










share|improve this question













Due to the recent security findings in that probably most SSDs implement encryption in a completely naive and broken way, I want to check which of my BitLocker machines are using hardware encryption and which ones are using software.



I found a way to disable the use of hardware encryption, but I can't figure out how to check if I'm using hardware encryption (in which case, I'll have to re-encrypt the drive). How do I do ti?



I'm aware of manage-bde.exe -status which gives me an output such as:



Disk volumes that can be protected with
BitLocker Drive Encryption:
Volume C: [Windows]
[OS Volume]

Size: 952.62 GB
BitLocker Version: 2.0
Conversion Status: Used Space Only Encrypted
Percentage Encrypted: 100.0%
Encryption Method: XTS-AES 128
Protection Status: Protection On
Lock Status: Unlocked
Identification Field: Unknown
Key Protectors:
TPM
Numerical Password


but I don't know if the information I want is in this screen.







windows security bitlocker






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 2 days ago









pupeno

3,360165474




3,360165474












  • Do you have a reference for the claim about weaknesses in hardware crypto implementations? Sounds like a good read.
    – Nat
    yesterday






  • 2




    @Nat: See this advisory for details. Incidentally, it also solves OP's problem.
    – Kevin
    yesterday








  • 2




    @Nat: I believe this is the source of the information: ru.nl/english/news-agenda/news/vm/icis/cyber-security/2018/…
    – pupeno
    22 hours ago


















  • Do you have a reference for the claim about weaknesses in hardware crypto implementations? Sounds like a good read.
    – Nat
    yesterday






  • 2




    @Nat: See this advisory for details. Incidentally, it also solves OP's problem.
    – Kevin
    yesterday








  • 2




    @Nat: I believe this is the source of the information: ru.nl/english/news-agenda/news/vm/icis/cyber-security/2018/…
    – pupeno
    22 hours ago
















Do you have a reference for the claim about weaknesses in hardware crypto implementations? Sounds like a good read.
– Nat
yesterday




Do you have a reference for the claim about weaknesses in hardware crypto implementations? Sounds like a good read.
– Nat
yesterday




2




2




@Nat: See this advisory for details. Incidentally, it also solves OP's problem.
– Kevin
yesterday






@Nat: See this advisory for details. Incidentally, it also solves OP's problem.
– Kevin
yesterday






2




2




@Nat: I believe this is the source of the information: ru.nl/english/news-agenda/news/vm/icis/cyber-security/2018/…
– pupeno
22 hours ago




@Nat: I believe this is the source of the information: ru.nl/english/news-agenda/news/vm/icis/cyber-security/2018/…
– pupeno
22 hours ago










1 Answer
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up vote
17
down vote



accepted










There exists a pretty new article on MSRC, partially explaining the issue and how to solve it. Thanks @Kevin




Microsoft is aware of reports of vulnerabilities in the hardware
encryption of certain self-encrypting drives (SEDs). Customers
concerned about this issue should consider using the software only
encryption provided by BitLocker Drive Encryption™. On Windows
computers with self-encrypting drives, BitLocker Drive Encryption™
manages encryption and will use hardware encryption by default.
Administrators who want to force software encryption on computers with
self-encrypting drives can accomplish this by deploying a Group Policy
to override the default behavior. Windows will consult Group Policy to
enforce software encryption only at the time of enabling BitLocker.



To check the type of drive encryption being used (hardware or
software):





  1. Run manage-bde.exe -status from elevated command prompt.




  2. If none of
    the drives listed report "Hardware Encryption" for the Encryption
    Method field, then this device is using software encryption and is not
    affected by vulnerabilities associated with self-encrypting drive
    encryption.








manage-bde.exe -status should show you if hardware-encryption is used.



I don't have a HW encrypted drive ATM, so here is a reference link and the image it contains:




The BitLocker UI in Control Panel does not tell you whether hardware
encryption is used, but the command line tool manage-bde.exe does when
invoked with the parameter status. You can see that hardware
encryption is enabled for D: (Samsung SSD 850 Pro) but not for C:
(Samsung SSD 840 Pro without support for hardware encryption):




Bitlocker-Status






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    1 Answer
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    up vote
    17
    down vote



    accepted










    There exists a pretty new article on MSRC, partially explaining the issue and how to solve it. Thanks @Kevin




    Microsoft is aware of reports of vulnerabilities in the hardware
    encryption of certain self-encrypting drives (SEDs). Customers
    concerned about this issue should consider using the software only
    encryption provided by BitLocker Drive Encryption™. On Windows
    computers with self-encrypting drives, BitLocker Drive Encryption™
    manages encryption and will use hardware encryption by default.
    Administrators who want to force software encryption on computers with
    self-encrypting drives can accomplish this by deploying a Group Policy
    to override the default behavior. Windows will consult Group Policy to
    enforce software encryption only at the time of enabling BitLocker.



    To check the type of drive encryption being used (hardware or
    software):





    1. Run manage-bde.exe -status from elevated command prompt.




    2. If none of
      the drives listed report "Hardware Encryption" for the Encryption
      Method field, then this device is using software encryption and is not
      affected by vulnerabilities associated with self-encrypting drive
      encryption.








    manage-bde.exe -status should show you if hardware-encryption is used.



    I don't have a HW encrypted drive ATM, so here is a reference link and the image it contains:




    The BitLocker UI in Control Panel does not tell you whether hardware
    encryption is used, but the command line tool manage-bde.exe does when
    invoked with the parameter status. You can see that hardware
    encryption is enabled for D: (Samsung SSD 850 Pro) but not for C:
    (Samsung SSD 840 Pro without support for hardware encryption):




    Bitlocker-Status






    share|improve this answer



























      up vote
      17
      down vote



      accepted










      There exists a pretty new article on MSRC, partially explaining the issue and how to solve it. Thanks @Kevin




      Microsoft is aware of reports of vulnerabilities in the hardware
      encryption of certain self-encrypting drives (SEDs). Customers
      concerned about this issue should consider using the software only
      encryption provided by BitLocker Drive Encryption™. On Windows
      computers with self-encrypting drives, BitLocker Drive Encryption™
      manages encryption and will use hardware encryption by default.
      Administrators who want to force software encryption on computers with
      self-encrypting drives can accomplish this by deploying a Group Policy
      to override the default behavior. Windows will consult Group Policy to
      enforce software encryption only at the time of enabling BitLocker.



      To check the type of drive encryption being used (hardware or
      software):





      1. Run manage-bde.exe -status from elevated command prompt.




      2. If none of
        the drives listed report "Hardware Encryption" for the Encryption
        Method field, then this device is using software encryption and is not
        affected by vulnerabilities associated with self-encrypting drive
        encryption.








      manage-bde.exe -status should show you if hardware-encryption is used.



      I don't have a HW encrypted drive ATM, so here is a reference link and the image it contains:




      The BitLocker UI in Control Panel does not tell you whether hardware
      encryption is used, but the command line tool manage-bde.exe does when
      invoked with the parameter status. You can see that hardware
      encryption is enabled for D: (Samsung SSD 850 Pro) but not for C:
      (Samsung SSD 840 Pro without support for hardware encryption):




      Bitlocker-Status






      share|improve this answer

























        up vote
        17
        down vote



        accepted







        up vote
        17
        down vote



        accepted






        There exists a pretty new article on MSRC, partially explaining the issue and how to solve it. Thanks @Kevin




        Microsoft is aware of reports of vulnerabilities in the hardware
        encryption of certain self-encrypting drives (SEDs). Customers
        concerned about this issue should consider using the software only
        encryption provided by BitLocker Drive Encryption™. On Windows
        computers with self-encrypting drives, BitLocker Drive Encryption™
        manages encryption and will use hardware encryption by default.
        Administrators who want to force software encryption on computers with
        self-encrypting drives can accomplish this by deploying a Group Policy
        to override the default behavior. Windows will consult Group Policy to
        enforce software encryption only at the time of enabling BitLocker.



        To check the type of drive encryption being used (hardware or
        software):





        1. Run manage-bde.exe -status from elevated command prompt.




        2. If none of
          the drives listed report "Hardware Encryption" for the Encryption
          Method field, then this device is using software encryption and is not
          affected by vulnerabilities associated with self-encrypting drive
          encryption.








        manage-bde.exe -status should show you if hardware-encryption is used.



        I don't have a HW encrypted drive ATM, so here is a reference link and the image it contains:




        The BitLocker UI in Control Panel does not tell you whether hardware
        encryption is used, but the command line tool manage-bde.exe does when
        invoked with the parameter status. You can see that hardware
        encryption is enabled for D: (Samsung SSD 850 Pro) but not for C:
        (Samsung SSD 840 Pro without support for hardware encryption):




        Bitlocker-Status






        share|improve this answer














        There exists a pretty new article on MSRC, partially explaining the issue and how to solve it. Thanks @Kevin




        Microsoft is aware of reports of vulnerabilities in the hardware
        encryption of certain self-encrypting drives (SEDs). Customers
        concerned about this issue should consider using the software only
        encryption provided by BitLocker Drive Encryption™. On Windows
        computers with self-encrypting drives, BitLocker Drive Encryption™
        manages encryption and will use hardware encryption by default.
        Administrators who want to force software encryption on computers with
        self-encrypting drives can accomplish this by deploying a Group Policy
        to override the default behavior. Windows will consult Group Policy to
        enforce software encryption only at the time of enabling BitLocker.



        To check the type of drive encryption being used (hardware or
        software):





        1. Run manage-bde.exe -status from elevated command prompt.




        2. If none of
          the drives listed report "Hardware Encryption" for the Encryption
          Method field, then this device is using software encryption and is not
          affected by vulnerabilities associated with self-encrypting drive
          encryption.








        manage-bde.exe -status should show you if hardware-encryption is used.



        I don't have a HW encrypted drive ATM, so here is a reference link and the image it contains:




        The BitLocker UI in Control Panel does not tell you whether hardware
        encryption is used, but the command line tool manage-bde.exe does when
        invoked with the parameter status. You can see that hardware
        encryption is enabled for D: (Samsung SSD 850 Pro) but not for C:
        (Samsung SSD 840 Pro without support for hardware encryption):




        Bitlocker-Status







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited yesterday

























        answered 2 days ago









        Lenniey

        2,2822821




        2,2822821






























             

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