when SPI controller is DMA mode, TPM can not work
by Sherry Zhang(BJ-RD)
HI All,
X86, kernel4.16:
SPI port0 flash is used to boot BIOS.
SPI port1 flash is a device.
SPI port2 is connected with TPM.
I set the SPI controller is DMA mode, port0/1 flash can work well.
devmem 0xfed40000
OS hang and reboot can not work .So I poweroff.
Does anyone know what is cause?
?????
?????????????????????????????????????????????????????
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1 year, 3 months
Re: [tpm2] tpm2 Digest, Vol 20, Issue 17
by Desai, Imran
@Petko Manolov here is the output from my platform with fTPM or PTT as the TPM and I found everything functional
openssl genrsa -out signing_key_private.pem 2048
Generating RSA private key, 2048 bit long modulus
..+++
............+++
e is 65537 (0x10001)
openssl rsa -in signing_key_private.pem -out signing_key_public.pem -pubout
writing RSA key
tpm2_loadexternal -G rsa -a o -u signing_key_public.pem -o signing_key.ctx -n signing_key.name
handle: 0x800000FF
name: 0x000b4edf4140b498c3ef6a496f98f0d034712786753e5677a22663816b612b075dba
tpm2_pcrlist -L sha256:0 -o pcr0.sha256
sha256:
0 : 0x16F10FB8CDE64A05CF2CED6B30F35FF063E3CF1F4A9E95A99A98FA1F4D3A42CF
tpm2_startauthsession -S session.ctx
session-handle: 0x3000000
tpm2_policypcr -S session.ctx -L sha256:0 -F pcr0.sha256 -f pcr.policy
policy-digest: 0x31FDC9AA71500875760FC2FF37862C932FDFF48E10F1A648D1EAFDD49B35F015
tpm2_flushcontext -S session.ctx
openssl dgst -sha256 -sign signing_key_private.pem -out pcr.signature pcr.policy
tpm2_startauthsession -S session.ctx
session-handle: 0x3000000
tpm2_policyauthorize -S session.ctx -o authorized.policy -f pcr.policy -n signing_key.name
b09780f1e8afcb441ce7ba2bd040114ce5c062f7325b9c49dfb21a86bf8a4531
tpm2_flushcontext -S session.ctx
tpm2_createprimary -Q -a o -g sha256 -G rsa -o prim.ctx -P owner
tpm2_create -Q -g sha256 -u sealing_pubkey.pub -r sealing_prikey.pub -I- -C prim.ctx -L authorized.policy <<< "secret to seal"
tpm2_verifysignature -c signing_key.ctx -G sha256 -m pcr.policy -s pcr.signature -t verification.tkt -f rsassa
tpm2_startauthsession -a -S session.ctx
session-handle: 0x3000000
tpm2_policypcr -Q -S session.ctx -L sha256:0 -f pcr.policy
tpm2_policyauthorize -S session.ctx -o authorized.policy -f pcr.policy -n signing_key.name -t verification.tkt
b09780f1e8afcb441ce7ba2bd040114ce5c062f7325b9c49dfb21a86bf8a4531
tpm2_load -Q -C prim.ctx -u sealing_pubkey.pub -r sealing_prikey.pub -o sealing_key.ctx
unsealed=`tpm2_unseal -p "session:session.ctx" -c sealing_key.ctx`
echo $unsealed
secret to seal
tpm2_flushcontext -S session.ctx
tpm2_getcap -c properties-fixed | grep -i vendor_string -A2
TPM2_PT_VENDOR_STRING_1:
raw: 0x496E7465
value: "Inte"
TPM2_PT_VENDOR_STRING_2:
raw: 0x6C000000
value: "l"
TPM2_PT_VENDOR_STRING_3:
raw: 0x0
value: ""
TPM2_PT_VENDOR_STRING_4:
raw: 0x0
value: ""
tpm2_getcap --version
tool="tpm2_getcap" version="3.0.2-734-g253e290" tctis="dynamic" tcti-default=tabrmd dlclose=enabled
On 2/22/19, 9:21 AM, "tpm2 on behalf of tpm2-request(a)lists.01.org" <tpm2-bounces(a)lists.01.org on behalf of tpm2-request(a)lists.01.org> wrote:
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When replying, please edit your Subject line so it is more specific
than "Re: Contents of tpm2 digest..."
Today's Topics:
1. Re: tpm2 Digest, Vol 20, Issue 16 (Desai, Imran)
2. tpm2-tss-engine (for OpenSSL) v1.0.0-rc0 (Fuchs, Andreas)
3. tpm2-totp v0.1.0-rc0 (Fuchs, Andreas)
4. tpm2_encryptdecrypt : other mode than the persistent key
(Gael GUEGAN)
----------------------------------------------------------------------
Message: 1
Date: Thu, 21 Feb 2019 20:18:25 +0000
From: "Desai, Imran" <imran.desai(a)intel.com>
To: "tpm2(a)lists.01.org" <tpm2(a)lists.01.org>
Subject: Re: [tpm2] tpm2 Digest, Vol 20, Issue 16
Message-ID:
<688D07BB9E3A9E4A852BA1336D1910FF83EFCBCB(a)fmsmsx104.amr.corp.intel.com>
Content-Type: text/plain; charset="us-ascii"
Persistent handles start with hex 81xxxxxx
________________________________________
From: tpm2 [tpm2-bounces(a)lists.01.org] on behalf of tpm2-request(a)lists.01.org [tpm2-request(a)lists.01.org]
Sent: Thursday, February 21, 2019 1:00 PM
To: tpm2(a)lists.01.org
Subject: tpm2 Digest, Vol 20, Issue 16
Send tpm2 mailing list submissions to
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When replying, please edit your Subject line so it is more specific
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Today's Topics:
1. Roadblock using TPM2 for mounting filesystems (martin doc)
2. Re: facilitating BIOS update with seamless PCR policy change
(Petko Manolov)
----------------------------------------------------------------------
Message: 1
Date: Thu, 21 Feb 2019 01:18:10 +0000
From: martin doc <db1280(a)hotmail.com>
To: "tpm2(a)lists.01.org" <tpm2(a)lists.01.org>
Subject: [tpm2] Roadblock using TPM2 for mounting filesystems
Message-ID:
<SL2P216MB0266A71D9099EBA6243311BCC27E0(a)SL2P216MB0266.KORP216.PROD.OUTLOOK.COM>
Content-Type: text/plain; charset="iso-8859-1"
I'm trying to get TPM2 working with encrypted filesystems on CentOS 7.
I started out using this page as a guide:
https://threat.tevora.com/secure-boot-tpm-2/
but some of the CLI has changed. The commands I've used are:
# dmesg | grep tpm_tis
[ 1.919443] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1B, rev-id 16)
# tpm2_createpolicy -P -L sha1:0,2,3,7 -F pcrs.bin -f policy.digest
# tpm2_createprimary -H e -g sha1 -G rsa -C primary.context
ObjectAttribute: 0x00030072
CreatePrimary Succeed ! Handle: 0x800000ff
# dd if=/dev/urandom of=/tmp/secret.bin bs=32 count=1
# tpm2_create -g sha256 -G keyedhash -u obj.pub -r obj.priv -c primary.context -L policy.digest -A "noda|adminwithpolicy|fixedparent|fixedtpm" -I /tmp/secret.bin
Load object into the TPM
# tpm2_load -c primary.context -u obj.pub -r obj.priv -C load.context
Load succ.
LoadedHandle: 0x80000100
But the final step fails:
# tpm2_evictcontrol -A o -c load.context -S 0x80000100
persistentHandle: 0x80000100
ERROR: EvictControl failed, error code: 0x1c4
# tpm2_rc_decode 0x1c4
error layer
hex: 0x0
identifier: TSS2_TPM_ERROR_LEVEL
description: Error produced by the TPM
format 1 error code
hex: 0x04
identifier: TPM_RC_VALUE
description: value is out of range or is not correct for the context
parameter
hex: 0x100
identifier: TPM_RC_1
description: (null)
The error description is a clue that the "-S #" is not right.
It also doens't work if I use the handle value for the primary.
Is there another step in here that I'm missing?
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Message: 2
Date: Thu, 21 Feb 2019 15:12:45 +0200
From: Petko Manolov <sti(a)nucleusys.com>
To: "Roberts, William C" <william.c.roberts(a)intel.com>
Cc: "Desai, Imran" <imran.desai(a)intel.com>, "tpm2(a)lists.01.org"
<tpm2(a)lists.01.org>
Subject: Re: [tpm2] facilitating BIOS update with seamless PCR policy
change
Message-ID: <20190221131245.GA2213@p310>
Content-Type: text/plain; charset=us-ascii
Hi,
Yet another update: the same script works fine on dTPM, regardless of the type
of PCR bank used - sha1 or sha256.
I am currently trying to debug Esys_Unseal(0x8F) - invalid nonce size or nonce
value mismatch problem. Any suggestions where shall i start looking at?
thanks,
Petko
On 19-02-20 15:05:33, Petko Manolov wrote:
> Hello,
>
> Just FYI - another fTPM is giving me the same error:
>
> WARNING:esys:src/tss2-esys/api/Esys_Unseal.c:295:Esys_Unseal_Finish() Received TPM Error
> ERROR:esys:src/tss2-esys/api/Esys_Unseal.c:101:Esys_Unseal() Esys Finish ErrorCode (0x0000008f)
> ERROR: Esys_Unseal(0x8F) - tpm:handle(unk):invalid nonce size or nonce value mismatch
> ERROR: Unseal failed!
> ERROR: Unable to run tpm2_unseal
>
> The machine is LENOVO P310, BIOS FWKT97A 11/08/2018, Sunrise Point-H chipset.
> Could you please give me some pointers as to how this could be worked around?
>
>
> thanks,
> Petko
>
>
> On 19-02-18 10:20:26, Petko Manolov wrote:
> > I am sorry that this didn't go through because of the attached script. I'm
> > embedding it to this email so i'd like to apologize about the bloat.
> >
> > ---
> >
> > #!/bin/bash
> >
> > source common.sh
> >
> > # Create a signing authority
> > openssl genrsa -out signing_key_private.pem 2048
> > openssl rsa -in signing_key_private.pem -out signing_key_public.pem -pubout
> > tpm2_loadexternal -G rsa -a o -u signing_key_public.pem -o signing_key.ctx \
> > -n signing_key.name
> >
> > echo "Signing authority created"
> >
> > # Create a policy to be authorized like a pcr policy:
> > tpm2_pcrlist -L $PCRS -o pcrs.sha256
> > tpm2_startauthsession -S session.ctx
> > tpm2_policypcr -S session.ctx -L $PCRS -F pcrs.sha256 -f pcr.policy
> > tpm2_flushcontext -S session.ctx
> > rm -f session.ctx
> >
> > echo "pcr policy created"
> >
> > # Sign the policy
> > openssl dgst -sha256 -sign signing_key_private.pem -out pcr.signature pcr.policy
> >
> > echo "policy is signed"
> >
> > # Authorize the policy in the policy digest:
> > tpm2_startauthsession -S session.ctx
> > tpm2_policyauthorize -S session.ctx -o authorized.policy -f pcr.policy \
> > -n signing_key.name
> > tpm2_flushcontext -S session.ctx
> > rm -f session.ctx
> >
> > echo "policy authorized"
> >
> > # Create a TPM object like a sealing object with the authorized policy
> > # based authentication:
> > echo "secret to seal 123" > secret_file
> > tpm2_createprimary -Q -a o -g sha256 -G rsa -o prim.ctx
> > tpm2_create -Q -g sha256 -u sealing_pubkey.pub -r sealing_prikey.pub \
> > -I secret_file -C prim.ctx -L authorized.policy
> >
> > echo "sealing object created"
> >
> > # Satisfy policy and unseal the secret:
> > tpm2_verifysignature -c signing_key.ctx -G sha256 -m pcr.policy \
> > -s pcr.signature -t verification.tkt -f rsassa
> > tpm2_startauthsession -a -S session.ctx
> > tpm2_policypcr -Q -S session.ctx -L $PCRS -f pcr.policy
> > tpm2_policyauthorize -S session.ctx -o authorized.policy -f pcr.policy \
> > -n signing_key.name -t verification.tkt
> > tpm2_load -Q -C prim.ctx -u sealing_pubkey.pub -r sealing_prikey.pub \
> > -o sealing_key.ctx
> > tpm2_unseal -p "session:session.ctx" -c sealing_key.ctx -o unsealed
> > cat unsealed
> > tpm2_flushcontext -S session.ctx
> > rm -f session.ctx unsealed
> >
> > echo "the end"
> >
> > ---
> >
> >
> > thanks,
> > Petko
> >
> >
> > On 19-02-18 09:48:37, Petko Manolov wrote:
> > > Hello again,
> > >
> > > I managed to get authorized PCR policies to work for me. The attached script
> > > works fine on my thinkpad and on rpi3 with Infineon's SLB9670 SPI TPM2.
> > >
> > > However, i stumbled upon a problem with an fTPM implementation in a very recent
> > > AMI BIOS. Everything seems to be working properly, until i get tpm2_unseal to
> > > give me the error below. The tpm2-tools is built with at-the-time tip of git
> > > commit id:
> > >
> > > 872076e1b31f22b18391c6761d47575a93891cd7
> > >
> > > tpm2_unseal -v:
> > >
> > > tool="tpm2_unseal" version="3.0.2-858-g88956e75" tctis="dynamic" tcti-default=tabrmd dlclose=enabled
> > >
> > > tpm-tss is v2.1.0 and tpm-abrmd is v2.0.3. Unfortunately the error message does
> > > not mean much for me so any help will be greatly appreciated.
> > >
> > >
> > > thanks,
> > > Petko
> > >
> > >
> > >
> > > ---
> > >
> > > Generating RSA private key, 2048 bit long modulus
> > > ..............................+++++
> > > ...........................................+++++
> > > e is 65537 (0x10001)
> > > writing RSA key
> > > transient-context: signing_key.ctx
> > > name: 0x000b5e069ba4b591842c25155d812f635970dabe7cee663aff121088940f88e2da80
> > > Signing authority created
> > > sha256:
> > > 0 : 0x647992CBC9EEBF49D367559D870620C324B1A4307EB2A6166F1ACEC0DC186AEA
> > > 1 : 0x519B03509291B643DA7FEC4407FFC47C1C18AF706A611ECA1C159D4608342338
> > > 2 : 0x369BB94CEB4A1DF8E76720141B64C57EC70E6C620F07B27E335E70AD2DDC25DB
> > > 3 : 0x369BB94CEB4A1DF8E76720141B64C57EC70E6C620F07B27E335E70AD2DDC25DB
> > > session-context: session.ctx
> > > policy-digest: 0x22035897291FE4681D7800685BFC5C73EBCBB88C7A579AB20C2E345A9815FDFE
> > > pcr policy created
> > > policy is signed
> > > session-context: session.ctx
> > > 45a41a53c9f74f09b72151af6ffdd199fe1129eff2b749b8e481b6b21f2281f1
> > > policy authorized
> > > sealing object created
> > > session-context: session.ctx
> > > 45a41a53c9f74f09b72151af6ffdd199fe1129eff2b749b8e481b6b21f2281f1
> > > WARNING:esys:../tpm2-tss/src/tss2-esys/api/Esys_Unseal.c:295:Esys_Unseal_Finish() Received TPM Error
> > > ERROR:esys:../tpm2-tss/src/tss2-esys/api/Esys_Unseal.c:101:Esys_Unseal() Esys Finish ErrorCode (0x0000008f)
> > > ERROR: Esys_Unseal(0x8F) - tpm:handle(unk):invalid nonce size or nonce value mismatch
> > > ERROR: Unseal failed!
> > > ERROR: Unable to run tpm2_unseal
> > > cat: unsealed: No such file or directory
> > > the end
> >
> >
> > _______________________________________________
> > tpm2 mailing list
> > tpm2(a)lists.01.org
> > https://lists.01.org/mailman/listinfo/tpm2
> >
> _______________________________________________
> tpm2 mailing list
> tpm2(a)lists.01.org
> https://lists.01.org/mailman/listinfo/tpm2
>
------------------------------
Subject: Digest Footer
_______________________________________________
tpm2 mailing list
tpm2(a)lists.01.org
https://lists.01.org/mailman/listinfo/tpm2
------------------------------
End of tpm2 Digest, Vol 20, Issue 16
************************************
------------------------------
Message: 2
Date: Fri, 22 Feb 2019 11:02:39 +0000
From: "Fuchs, Andreas" <andreas.fuchs(a)sit.fraunhofer.de>
To: "tpm2(a)lists.01.org" <tpm2(a)lists.01.org>
Subject: [tpm2] tpm2-tss-engine (for OpenSSL) v1.0.0-rc0
Message-ID:
<9F48E1A823B03B4790B7E6E69430724D0162E56DED(a)exch2010c.sit.fraunhofer.de>
Content-Type: text/plain; charset="us-ascii"
Hello all,
the first release candidate for the first stable version of the tpm2-tss-engine 1.0.0-rc0 is out:
https://github.com/tpm2-software/tpm2-tss-engine/releases/tag/v1.0.0-rc0
Please give it some rigorous testing and review, given that it is the first stable version to appear.
Any feedback is highly appreciated.
Thanks a lot,
Andreas
------------------------------
Message: 3
Date: Fri, 22 Feb 2019 11:02:42 +0000
From: "Fuchs, Andreas" <andreas.fuchs(a)sit.fraunhofer.de>
To: "tpm2(a)lists.01.org" <tpm2(a)lists.01.org>
Subject: [tpm2] tpm2-totp v0.1.0-rc0
Message-ID:
<9F48E1A823B03B4790B7E6E69430724D0162E56DF4(a)exch2010c.sit.fraunhofer.de>
Content-Type: text/plain; charset="us-ascii"
Hello all,
the first release candidate for the first unstable version of tpm2-totp 0.1.0-rc0 is out:
https://github.com/tpm2-software/tpm2-totp/releases/tag/v0.1.0-rc0
Please give it some rigorous testing and review, given that it is the first version to appear.
Any feedback is highly appreciated.
Thanks a lot,
Andreas
------------------------------
Message: 4
Date: Fri, 22 Feb 2019 16:21:04 +0000
From: Gael GUEGAN <Gael.Guegan(a)non.se.com>
To: "tpm2(a)lists.01.org" <tpm2(a)lists.01.org>
Subject: [tpm2] tpm2_encryptdecrypt : other mode than the persistent
key
Message-ID:
<VI1PR04MB5424E6EB722498DFF8B16B54DC7F0(a)VI1PR04MB5424.eurprd04.prod.outlook.com>
Content-Type: text/plain; charset="us-ascii"
When using the command : **tpm2_encryptdecrypt**, should we be able to cipher with a different mode than the one specified in the key ?
For example, if I have created a persistent **aes256cfb** :
```shell
Tpm2_listpersistent
- handle: 0x81000001
name-alg:
value: sha256
raw: 0xb
attributes:
value: fixedtpm|fixedparent|sensitivedataorigin|userwithauth|decrypt|sign
raw: 0x60072
type:
value: symcipher
raw: 0x25
sym-alg:
value: aes
raw: 0x6
sym-mode:
value: ctr
raw: 0x40
sym-keybits: 128
symcipher: 873f743994e47004602011039322b108b49318c305b4f5eeace36b1fe634e36d
tpm2_encryptdecrypt -c 0x81000001 -I data.txt -o enc_data.txt -G cbc
ERROR: Esys_EncryptDecrypt(0x2C9) - tpm:parameter(2):mode of operation not supported
```
This does not work ...
```shell
tpm2_encryptdecrypt -c 0x8100001 -I data.txt -o enc_data.txt -G cfb
```
This works ...
Why the option -G exists, if it is to specified a mode already present in the key ?
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************************************
1 year, 3 months
TSS-Engine store primary key in TPM
by Bastian Fraune
Hey guys, thanks for the great contributions to the Linux TPM2 and TSS Software!
We are working with the TSS-Engine for OpenSSL and wonder how it is possible to create RSA keys, where the private key remains in the TPM. Did we understood something wrong with the OpenSSL for TPM impl?
Thanks in advance, best,
Bastian Fraune
1 year, 3 months
tpm2_encryptdecrypt : other mode than the persistent key
by Gael GUEGAN
When using the command : **tpm2_encryptdecrypt**, should we be able to cipher with a different mode than the one specified in the key ?
For example, if I have created a persistent **aes256cfb** :
```shell
Tpm2_listpersistent
- handle: 0x81000001
name-alg:
value: sha256
raw: 0xb
attributes:
value: fixedtpm|fixedparent|sensitivedataorigin|userwithauth|decrypt|sign
raw: 0x60072
type:
value: symcipher
raw: 0x25
sym-alg:
value: aes
raw: 0x6
sym-mode:
value: ctr
raw: 0x40
sym-keybits: 128
symcipher: 873f743994e47004602011039322b108b49318c305b4f5eeace36b1fe634e36d
tpm2_encryptdecrypt -c 0x81000001 -I data.txt -o enc_data.txt -G cbc
ERROR: Esys_EncryptDecrypt(0x2C9) - tpm:parameter(2):mode of operation not supported
```
This does not work ...
```shell
tpm2_encryptdecrypt -c 0x8100001 -I data.txt -o enc_data.txt -G cfb
```
This works ...
Why the option -G exists, if it is to specified a mode already present in the key ?
1 year, 3 months
Re: [tpm2] tpm2 Digest, Vol 20, Issue 16
by Desai, Imran
Persistent handles start with hex 81xxxxxx
________________________________________
From: tpm2 [tpm2-bounces(a)lists.01.org] on behalf of tpm2-request(a)lists.01.org [tpm2-request(a)lists.01.org]
Sent: Thursday, February 21, 2019 1:00 PM
To: tpm2(a)lists.01.org
Subject: tpm2 Digest, Vol 20, Issue 16
Send tpm2 mailing list submissions to
tpm2(a)lists.01.org
To subscribe or unsubscribe via the World Wide Web, visit
https://lists.01.org/mailman/listinfo/tpm2
or, via email, send a message with subject or body 'help' to
tpm2-request(a)lists.01.org
You can reach the person managing the list at
tpm2-owner(a)lists.01.org
When replying, please edit your Subject line so it is more specific
than "Re: Contents of tpm2 digest..."
Today's Topics:
1. Roadblock using TPM2 for mounting filesystems (martin doc)
2. Re: facilitating BIOS update with seamless PCR policy change
(Petko Manolov)
----------------------------------------------------------------------
Message: 1
Date: Thu, 21 Feb 2019 01:18:10 +0000
From: martin doc <db1280(a)hotmail.com>
To: "tpm2(a)lists.01.org" <tpm2(a)lists.01.org>
Subject: [tpm2] Roadblock using TPM2 for mounting filesystems
Message-ID:
<SL2P216MB0266A71D9099EBA6243311BCC27E0(a)SL2P216MB0266.KORP216.PROD.OUTLOOK.COM>
Content-Type: text/plain; charset="iso-8859-1"
I'm trying to get TPM2 working with encrypted filesystems on CentOS 7.
I started out using this page as a guide:
https://threat.tevora.com/secure-boot-tpm-2/
but some of the CLI has changed. The commands I've used are:
# dmesg | grep tpm_tis
[ 1.919443] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1B, rev-id 16)
# tpm2_createpolicy -P -L sha1:0,2,3,7 -F pcrs.bin -f policy.digest
# tpm2_createprimary -H e -g sha1 -G rsa -C primary.context
ObjectAttribute: 0x00030072
CreatePrimary Succeed ! Handle: 0x800000ff
# dd if=/dev/urandom of=/tmp/secret.bin bs=32 count=1
# tpm2_create -g sha256 -G keyedhash -u obj.pub -r obj.priv -c primary.context -L policy.digest -A "noda|adminwithpolicy|fixedparent|fixedtpm" -I /tmp/secret.bin
Load object into the TPM
# tpm2_load -c primary.context -u obj.pub -r obj.priv -C load.context
Load succ.
LoadedHandle: 0x80000100
But the final step fails:
# tpm2_evictcontrol -A o -c load.context -S 0x80000100
persistentHandle: 0x80000100
ERROR: EvictControl failed, error code: 0x1c4
# tpm2_rc_decode 0x1c4
error layer
hex: 0x0
identifier: TSS2_TPM_ERROR_LEVEL
description: Error produced by the TPM
format 1 error code
hex: 0x04
identifier: TPM_RC_VALUE
description: value is out of range or is not correct for the context
parameter
hex: 0x100
identifier: TPM_RC_1
description: (null)
The error description is a clue that the "-S #" is not right.
It also doens't work if I use the handle value for the primary.
Is there another step in here that I'm missing?
1 year, 3 months
Roadblock using TPM2 for mounting filesystems
by martin doc
I'm trying to get TPM2 working with encrypted filesystems on CentOS 7.
I started out using this page as a guide:
https://threat.tevora.com/secure-boot-tpm-2/
but some of the CLI has changed. The commands I've used are:
# dmesg | grep tpm_tis
[ 1.919443] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1B, rev-id 16)
# tpm2_createpolicy -P -L sha1:0,2,3,7 -F pcrs.bin -f policy.digest
# tpm2_createprimary -H e -g sha1 -G rsa -C primary.context
ObjectAttribute: 0x00030072
CreatePrimary Succeed ! Handle: 0x800000ff
# dd if=/dev/urandom of=/tmp/secret.bin bs=32 count=1
# tpm2_create -g sha256 -G keyedhash -u obj.pub -r obj.priv -c primary.context -L policy.digest -A "noda|adminwithpolicy|fixedparent|fixedtpm" -I /tmp/secret.bin
Load object into the TPM
# tpm2_load -c primary.context -u obj.pub -r obj.priv -C load.context
Load succ.
LoadedHandle: 0x80000100
But the final step fails:
# tpm2_evictcontrol -A o -c load.context -S 0x80000100
persistentHandle: 0x80000100
ERROR: EvictControl failed, error code: 0x1c4
# tpm2_rc_decode 0x1c4
error layer
hex: 0x0
identifier: TSS2_TPM_ERROR_LEVEL
description: Error produced by the TPM
format 1 error code
hex: 0x04
identifier: TPM_RC_VALUE
description: value is out of range or is not correct for the context
parameter
hex: 0x100
identifier: TPM_RC_1
description: (null)
The error description is a clue that the "-S #" is not right.
It also doens't work if I use the handle value for the primary.
Is there another step in here that I'm missing?
1 year, 3 months
