Your TPM has come out of the box without an endorsement key;
tpm_createek will generate one for you.

On Mon, Jan 7, 2013 at 4:53 AM, Florian Hars <[email protected]> wrote:
> I an trying to take ownership of an infineon SLB9635 TPM, with
> trousers 0.3.10 and tpm_tools 1.3.8, but I always get an unknown error:
>
> # tpm_takeownership -l debug -y -z
> Tspi_Context_Create success
> Tspi_Context_Connect success
> Tspi_Context_GetTpmObject success
> Tspi_GetPolicyObject success
> Tspi_Policy_SetSecret success
> Tspi_Context_CreateObject success
> Tspi_GetPolicyObject success
> Tspi_Policy_SetSecret success
> Tspi_TPM_TakeOwnership failed: 0x00003128 - layer=tsp, code=0128
> (296), Unknown
> Tspi_Context_CloseObject success
> Tspi_Context_FreeMemory success
> Tspi_Context_Close success
>
> # tpm_version
>   TPM 1.2 Version Info:
>   Chip Version:        1.2.3.16
>   Spec Level:          2
>   Errata Revision:     2
>   TPM Vendor ID:       IFX
>   Vendor Specific data: 0310000a 00
>   TPM Version:         01010000
>   Manufacturer Info:   49465800
>
> I get the same error if I try to get the public EK:
>
> # tpm_getpubek
> Tspi_TPM_GetPubEndorsementKey failed: 0x00003128 - layer=tsp,
> code=0128 (296), Unknown
>
> # lsmod | grep tpm
> tpm_tis                19211  1
> tpm                    27336  1 tpm_tis
> tpm_bios               18939  1 tpm
>
> # uname -a
> Linux host 3.7.1-4-desktop #1 SMP PREEMPT Mon Dec 17 20:23:18 UTC 2012
> (5e9fe70) x86_64 x86_64 x86_64 GNU/Linux
>
> # dmesg | grep tpm
> [   26.360848] tpm_tis 00:0f: 1.2 TPM (device-id 0xB, rev-id 16)
>
> Once I got an I/O error instead, but I cannot reproduce that:
>
> Tspi_TPM_TakeOwnership failed: 0x00001087 - layer=tddl, code=0087
> (135), I/O error
>
> Has anyone seen this before?
>
>
> - Florian.
> --
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-- 
august huber
security engineer
google.com
pgp:0x8ec541e4b6a0f519

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