Hello @shockoMS ,
Thank you for posting here.
From the following link, we can see in Windows 2008, EFS use a CAPI Cryptographic Service Provider (CSP).
For more information, we can refer to link below.
Cryptography Next Generation
https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc730763(v=ws.10)?redirectedfrom=MSDN
Hope the information above is helpful.
Should you have any question or concern, please feel free to let us know.
Best Regards,
Daisy Zhou
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