Re: [tpm2] 1.2 and 2.0

* Re: [tpm2] 1.2 and 2.0
@ 2019-09-17 20:33 Rahul Hardikar
  0 siblings, 0 replies; 3+ messages in thread
From: Rahul Hardikar @ 2019-09-17 20:33 UTC (permalink / raw)
  To: tpm2

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Thanks Andreas.  I feel even the protocol is slightly different, the
privacy CA steps differ slightly for 1.2 and 2.0.

On Tue, Sep 17, 2019 at 12:23 AM Fuchs, Andreas <
andreas.fuchs(a)sit.fraunhofer.de> wrote:

> Hi,
>
> yes, 2.0 is a complete rework and not compatible with 1.2
> Thus one would have to do a complete rewrite of said software.
>
> The protocol and schemes would remain the same, but data-types and API are
> new.
>
> Cheers,
> Andreas
>
> ------------------------------
> *From:* tpm2 [tpm2-bounces(a)lists.01.org] on behalf of Rahul Hardikar [
> rahulhardikar(a)gmail.com]
> *Sent:* Tuesday, September 17, 2019 03:08
> *To:* tpm2(a)lists.01.org
> *Subject:* [tpm2] 1.2 and 2.0
>
> Hi All,
> General question here.
> Is 2.0 not at all compatible with 1.2?  The AIK scheme in 1.2 looks quite
> different than that of 2.0.
>
> How would one migrate to 2.0 support if they implemented AIK (attestation
> CA) using 1.2 structures, for example,  1.2 defines TCPA_IDENTITY_REQ which
> is so different that what's in 2.0
>
> How would one migrate such code?
> Thanks,
> Rahul
>

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