From: James Bottomley <James.Bottomley@HansenPartnership.com> To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>, "David R. Bild" <david.bild@xaptum.com>, philip.b.tricca@intel.com Cc: Jason Gunthorpe <jgg@ziepe.ca>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Peter Huewe <peterhuewe@gmx.de>, linux-usb@vger.kernel.org, linux-integrity@vger.kernel.org Subject: [v3,2/2] usb: misc: xapea00x: perform platform initialization of TPM Date: Tue, 08 May 2018 08:25:48 -0700 [thread overview] Message-ID: <1525793148.3672.8.camel@HansenPartnership.com> (raw) On Tue, 2018-05-08 at 13:55 +0300, Jarkko Sakkinen wrote: > On Fri, May 04, 2018 at 02:56:25PM -0500, David R. Bild wrote: [...] > > In particular, it sets the credentials for the platform hierarchy. > > The platform hierarchy is essentially the "root" account of the > > TPM, so it's critical that those credentials be set before the TPM > > is exposed to user-space. (The platform credentials aren't > > persisted in the TPM and must be set by the platform on every > > boot.) If the driver registers the TPM before doing > > initialization, there's a chance that something else could access > > the TPM before the platform credentials get set. > > Maybe. Not sure yet where to draw the line eg should TSS2 daemon to > do it for example. > > James? Philip? I don't see any reason to set an unreachable password for the platform hierarchy if the UEFI didn't. If the desire is to disable the platform hierarchy, then it should be disabled, not have a random password set. I'd also say this is probably the job of early boot based on policy. James --- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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From: James Bottomley <James.Bottomley@HansenPartnership.com> To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>, "David R. Bild" <david.bild@xaptum.com>, philip.b.tricca@intel.com Cc: Jason Gunthorpe <jgg@ziepe.ca>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Peter Huewe <peterhuewe@gmx.de>, linux-usb@vger.kernel.org, linux-integrity@vger.kernel.org Subject: Re: [PATCH v3 2/2] usb: misc: xapea00x: perform platform initialization of TPM Date: Tue, 08 May 2018 08:25:48 -0700 [thread overview] Message-ID: <1525793148.3672.8.camel@HansenPartnership.com> (raw) In-Reply-To: <20180508105515.GB6132@linux.intel.com> On Tue, 2018-05-08 at 13:55 +0300, Jarkko Sakkinen wrote: > On Fri, May 04, 2018 at 02:56:25PM -0500, David R. Bild wrote: [...] > > In particular, it sets the credentials for the platform hierarchy. > > The platform hierarchy is essentially the "root" account of the > > TPM, so it's critical that those credentials be set before the TPM > > is exposed to user-space. (The platform credentials aren't > > persisted in the TPM and must be set by the platform on every > > boot.) If the driver registers the TPM before doing > > initialization, there's a chance that something else could access > > the TPM before the platform credentials get set. > > Maybe. Not sure yet where to draw the line eg should TSS2 daemon to > do it for example. > > James? Philip? I don't see any reason to set an unreachable password for the platform hierarchy if the UEFI didn't. If the desire is to disable the platform hierarchy, then it should be disabled, not have a random password set. I'd also say this is probably the job of early boot based on policy. James
next reply other threads:[~2018-05-08 15:25 UTC|newest] Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-05-08 15:25 James Bottomley [this message] 2018-05-08 15:25 ` [PATCH v3 2/2] usb: misc: xapea00x: perform platform initialization of TPM James Bottomley -- strict thread matches above, loose matches on Subject: below -- 2018-05-25 20:31 [v3,2/2] " Ken Goldman 2018-05-25 20:31 ` [PATCH v3 2/2] " Ken Goldman 2018-05-25 20:23 [v3,2/2] " Ken Goldman 2018-05-25 20:23 ` [PATCH v3 2/2] " Ken Goldman 2018-05-14 20:12 [v3,2/2] " David R. Bild 2018-05-14 20:12 ` [PATCH v3 2/2] " David R. Bild 2018-05-14 20:08 [v3,2/2] " Jason Gunthorpe 2018-05-14 20:08 ` [PATCH v3 2/2] " Jason Gunthorpe 2018-05-14 19:59 [v3,2/2] " David R. Bild 2018-05-14 19:59 ` [PATCH v3 2/2] " David R. Bild 2018-05-14 19:31 [v3,2/2] " Jason Gunthorpe 2018-05-14 19:31 ` [PATCH v3 2/2] " Jason Gunthorpe 2018-05-13 8:51 [v3,2/2] " Jarkko Sakkinen 2018-05-13 8:51 ` [PATCH v3 2/2] " Jarkko Sakkinen 2018-05-13 8:46 [v3,2/2] " Jarkko Sakkinen 2018-05-13 8:46 ` [PATCH v3 2/2] " Jarkko Sakkinen 2018-05-10 15:17 [v3,2/2] " David R. Bild 2018-05-10 15:17 ` [PATCH v3 2/2] " David R. Bild 2018-05-10 14:47 [v3,2/2] " James Bottomley 2018-05-10 14:47 ` [PATCH v3 2/2] " James Bottomley 2018-05-10 14:41 [v3,2/2] " David R. Bild 2018-05-10 14:41 ` [PATCH v3 2/2] " David R. Bild 2018-05-10 14:31 [v3,2/2] " David R. Bild 2018-05-10 14:31 ` [PATCH v3 2/2] " David R. Bild 2018-05-10 14:29 [v3,2/2] " David R. Bild 2018-05-10 14:29 ` [PATCH v3 2/2] " David R. Bild 2018-05-10 14:25 [v3,2/2] " David R. Bild 2018-05-10 14:25 ` [PATCH v3 2/2] " David R. Bild 2018-05-10 14:09 [v3,2/2] " David R. Bild 2018-05-10 14:09 ` [PATCH v3 2/2] " David R. Bild 2018-05-10 1:59 [v3,2/2] " Jarkko Sakkinen 2018-05-10 1:59 ` [PATCH v3 2/2] " Jarkko Sakkinen 2018-05-10 1:44 [v3,2/2] " Jarkko Sakkinen 2018-05-10 1:44 ` [PATCH v3 2/2] " Jarkko Sakkinen 2018-05-10 1:42 [v3,2/2] " Jarkko Sakkinen 2018-05-10 1:42 ` [PATCH v3 2/2] " Jarkko Sakkinen 2018-05-10 1:42 [v3,2/2] " Jarkko Sakkinen 2018-05-10 1:42 ` [PATCH v3 2/2] " Jarkko Sakkinen 2018-05-08 15:36 [v3,2/2] " James Bottomley 2018-05-08 15:36 ` [PATCH v3 2/2] " James Bottomley 2018-05-08 15:29 [v3,2/2] " David R. Bild 2018-05-08 15:29 ` [PATCH v3 2/2] " David R. Bild 2018-05-08 10:55 [v3,2/2] " Jarkko Sakkinen 2018-05-08 10:55 ` [PATCH v3 2/2] " Jarkko Sakkinen 2018-05-08 10:47 [v3,2/2] " Jarkko Sakkinen 2018-05-08 10:47 ` [PATCH v3 2/2] " Jarkko Sakkinen 2018-05-08 9:09 [v3,1/2] usb: misc: xapea00x: add driver for Xaptum ENF Access Card Oliver Neukum 2018-05-08 9:09 ` [PATCH v3 1/2] " Oliver Neukum 2018-05-07 14:12 EXTERNAL: [PATCH v3 2/2] usb: misc: xapea00x: perform platform initialization of TPM Jeremy Boone 2018-05-07 14:12 ` Jeremy Boone 2018-05-07 13:31 [v3,1/2] usb: misc: xapea00x: add driver for Xaptum ENF Access Card David R. Bild 2018-05-07 13:31 ` [PATCH v3 1/2] " David R. Bild 2018-05-07 9:58 [v3,1/2] " Oliver Neukum 2018-05-07 9:58 ` [PATCH v3 1/2] " Oliver Neukum 2018-05-06 15:02 [v3,2/2] usb: misc: xapea00x: perform platform initialization of TPM Jason Gunthorpe 2018-05-06 15:02 ` [PATCH v3 2/2] " Jason Gunthorpe 2018-05-04 20:19 [v3,2/2] " David R. Bild 2018-05-04 20:19 ` [PATCH v3 2/2] " David R. Bild 2018-05-04 19:56 [v3,2/2] " David R. Bild 2018-05-04 19:56 ` [PATCH v3 2/2] " David R. Bild 2018-05-04 19:06 [v3,2/2] " Jason Gunthorpe 2018-05-04 19:06 ` [PATCH v3 2/2] " Jason Gunthorpe 2018-05-04 13:00 [v3,2/2] " David R. Bild 2018-05-04 13:00 ` [PATCH v3 2/2] " David R. Bild 2018-05-04 13:00 [v3,1/2] usb: misc: xapea00x: add driver for Xaptum ENF Access Card David R. Bild 2018-05-04 13:00 ` [PATCH v3 1/2] " David R. Bild [not found] <20180430125418.31344-1-david.bild@xaptum.com> 2018-05-04 13:00 ` [PATCH v3 0/2] Add driver for Xaptum ENF Access card (XAP-EA-00x) David R. Bild
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