OPTIGA™ TPM Forum Discussions
This seems similar to some other threads I've found:
* https://community.infineon.com/t5/OPTIGA-TPM/SLB-9665TT2-0-SHA256-Linux-support/td-p/398514
* https://answers.microsoft.com/en-us/insider/forum/all/bug-of-the-bootloaderfwefi-the-new-version/e28b2930-2d17-4338-befe-6a787410d1d6
Platform is a Gigabyte z97x-ud3h motherboard with an updated bios with tpm2.0 support.
SLB9665 has been updated to TPM20_5.63.3353.0.
With hashpolicy set to sha1 in the uefi, everything works perfectly, except for the obvious issue that sha1 is being used.
When set to sha2, the uefi indeed populates sha256 banks 0-7 and 11. However, Windows 11 still tries to use the sha1 bank for some reason, which obviously does not work.
As suggested in the other thread, I was able to use pcr_allocate to configure only a sha256 bank. And yet, Windows still "uses" sha1, which again fails.
How can I further troubleshoot? Is there some variable that needs adjusting with the tpm?
Thanks
Show LessHello,
We are currently working on tpm2.0 for SLB9673 , as this is new to us we would like to know whether SLB9673 supports disk encryption.
If so, could you provide us a brief explanation about disk encryption process that is performed and the necessary steps/procedure that is to be followed to perform the same.
Thanks and Regards,
Mythreyi
Is SLB 9665TT2.0 compatible with ESXi version 8? The requirements are as follows:
- TPM 2.0
- SHA-256 hashing algorithm - SHA1 is not supported
- TIS/FIFO (First-In, First-Out) interface and not CRB (Command Response Buffer) - CRB is a no no according to VMWare docs.
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Hi Team,
We are now developing SLB9673 (package) in our platform and doing thermal test.
Correct me if I am wrong.
In the datasheet shows:
*standard temperature TA range is -40 to 85 degreeC &
*Enhance temperature TA range -40 to 105 degreeC.
1) Please help to provide PSI JT, normally system design use "PSI JT" to calculate the estimation of Tj(caculated).
Tj(calculated)=Tc(measured)+PD*PsiJT
2) If Tj(caculated) < 110 degreeC Tj(maximum junction temperature), then it will be safe?
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Hi,
Currently, we have 2 TPM chipsets on the 2 board variants (one variant with SLI9670 and another with SLB9672). The recommended TCG lib for SLI9670 is v1.38 while SLB9672 is v1.59.
Now, if the TCB Lib Spec is upgraded to v1.59 for both variants, will it have any impact on the variant running with SLI9670?
Thanks
Show LessHow does one field firmware upgrade / OTA the SLB9762 FW16.12?
We need to upgrade the SLB9762 FW16.12 to the latest (FW16.13??) in an ARM-based Linux environment.
Any pointers, sample code, examples, white papers, etc appreciated.
Show LessHi, I'm looking for the Trusted Platform Module (TPM) c/w FW16 firmware version. But in the PC evaluation board...may I know if it's available to the market ( with FW16 )? Appreciated in advance. #https://www.infineon.com/cms/en/product/security-smart-card-solutions/optiga-embedded-security-solutions/optiga-tpm/optiga-tpm-slb-9672-fw16/
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