Do you have a more complete code sample? For example I cannot tell if you
are loading the AIK key into context before calling Tspi_TPM_Quote.
TSS_KEY_TYPE_IDENTITY does indeed instruct the TSS layer to create an AIK
RSA key pair, and you are limited to what operations you can do with an AIK,
although quoting should be fine along with certifying another key.
Regards,
Ceri
From: wuyanjun [mailto:[email protected]]
Sent: 17 December 2013 07:50
To: trousers-users
Subject: [TrouSerS-users] Problem when using Tspi_TPM_Quote
Hi,
I have occurred an error with Tspi_TPM_Quote, it shows that:
Tspi_TPM_Quote...
LOG_DEBUG TSPI rpc/tcstp/rpc_quote.c:46 RPC_Quote_TP: TCS Context:
0xa0c10e26
0 FAIL : Tspi_TPM_Quote returned (0x24) TPM_E_INVALID_KEYUSAGE
I use tpm_emulator and trousers, and run the code in domu of Xen.
result = Tspi_TPM_Quote(hTPM, hIdentKey, hPcrComposite,
&validationData);
the hIdentKey is like this, which is in the Tspi_TPM_CreateIdentity.c ,
UINT32 initFlags = TSS_KEY_TYPE_IDENTITY | TSS_KEY_SIZE_2048
|
TSS_KEY_VOLATILE | TSS_KEY_NOT_MIGRATABLE;
result = Tspi_Context_CreateObject(hContext,
TSS_OBJECT_TYPE_RSAKEY,
initFlags, &hIdentKey);
In another code, I find that if the initFlags don't include
TSS_KEY_TYPE_IDENTITY, the Tspi_TPM_Quote can work well (also in domu). But
TSS_KEY_TYPE_IDENTITY must be used if I want to generate an AIK, isn't it?
I really don't konw what is wrong, so hoping to receive some advice. Thank
you in advance.
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