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ravnda
Posts: 22
Registered: ‎04-17-2011
Location: Norway
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Windows 7 and Bitlocker with PIN

Hi,

 

I'm not sure wich TPM chip they use,  but that is not relevant. Because I need answer for any TPM chip Lenovo uses.

 

We have some customers that use Bitlocker with PIN, and is wondering how many times can you try before the TPM is not answering more before a certain time?

 

From this site: http://technet.microsoft.com/en-us/library/ee449438%28WS.10%29.aspx#BKMK_LongEncrypt from Microsoft they recommend to ask this question:

 

 

  • How many failed authorization attempts can occur before lockout?

  • What is the algorithm for determining the duration of a lockout based on the number of failed attempts and any other relevant parameters?

  • What actions can cause the failure count and lockout duration to be decreased or reset?

 

Is there a place where I can find this information?

 

Best Regards,

Ravnda.