Re: [PATCH v4 0/7] add integrity and security to TPM2 transactions

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On 10/24/2018 3:34 AM, James Bottomley wrote:
so we'd have to derive the RSA EK primary (which can take up to
60 seconds)

Just FYI:

The TPM vendors seem to be caching the two standard EKs during
manufacturing.  When the TPM detects the EK template during
createprimary, it quickly returns the cached value.

This optimization is not required, but it is common.





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