Re: [TrouSerS-users] Doing it without tcsd

[Thomas, R. L. <Ron...@at...>]

Is there documentation that describes in detail how all the layers interact (i.e. TCSD, the kernel TPM driver, etc.)?  I was under the impression that TCSD had to be started in order to run Trousers.

Ronnie Thomas
Senior Software Development Engineer-TPM/Atmel Corporation
1150 E. Cheyenne Mountain Blvd, Colorado Springs, CO 80906
Tel:(+1)(719)-540-1604/Fax:(+1)(719)-540-1759
ron...@at.../ http://www.atmel.com/

-----Original Message-----
From: Ken Goldman [mailto:kgo...@us...] 
Sent: Monday, June 22, 2015 7:44 AM
To: tro...@li...
Subject: Re: [TrouSerS-users] Doing it without tcsd

On 6/19/2015 5:52 PM, Raja Sivagaminathan wrote:
>
> I think tcsd and the socket communication are unwanted pieces from a 
> application point of view. [snip] My purpose is to configure TPM at 
> the time of installing my application.

If you can guarantee that there are no other users of the TPM at the time you are installing your application, you can talk directly to the TPM.  If you cannot, you need a scheduler and resource manager.

A trivial example:  What happens if your install needs to load a key, but another application has used all the key slots?




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