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wolfTPM
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Add debug prints to the TPM2 Quote example plus changes from peer review 

Signed-off-by: Dimitar Tomov <dimi@designfirst.ee>
pull/107/head
Dimitar Tomov 2020-07-17 18:10:43 +03:00
parent 0ad05b9554
commit 08cd7a0836
1 changed files with 15 additions and 13 deletions
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28
examples/pcr/quote.c
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@ -32,9 +32,6 @@
#include <stdio.h>
#define SET_PCR_SELECT_BIT( pcrSelection, pcr ) \
(pcrSelection).pcrSelect[( (pcr)/8 )] |= ( 1 << ( (pcr) % 8) );
/******************************************************************************/
/* --- BEGIN TPM2.0 Quote Test -- */
/******************************************************************************/
@ -170,19 +167,16 @@ int TPM2_Quote_Test(void* userCtx)
cmdIn.quoteAsk.inScheme.scheme = TPM_ALG_RSASSA;
cmdIn.quoteAsk.inScheme.details.rsassa.hashAlg = TPM_ALG_SHA256;
cmdIn.quoteAsk.qualifyingData.size = 0; /* optional */
/* Set the PCR for signing */
cmdIn.quoteAsk.PCRselect.count = 1;
cmdIn.quoteAsk.PCRselect.pcrSelections[0].hash = TPM_ALG_SHA256;
cmdIn.quoteAsk.PCRselect.pcrSelections[0].sizeofSelect = 3;
/* PCR16 is for DEBUG purposes, therefore safe to use for a demo */
SET_PCR_SELECT_BIT(cmdIn.quoteAsk.PCRselect.pcrSelections[0], 16);
/* Choose PCR for signing
* PCR16 is for DEBUG purposes, therefore safe to use for a demo
*/
TPM2_SetupPCRSel(&cmdIn.quoteAsk.PCRselect, TPM_ALG_SHA256, 16);
/* Get PCR measurement signed by the TPM using the AIK key */
/* Get the PCR measurement signed by the TPM using the AIK key */
rc = TPM2_Quote(&cmdIn.quoteAsk, &cmdOut.quoteResult);
if (rc != TPM_RC_SUCCESS) {
printf("TPM2_Quote failed 0x%x: %s\n", rc,
TPM2_GetRCString(rc));
printf("TPM2_Quote failed 0x%x: %s\n", rc, TPM2_GetRCString(rc));
goto exit;
}
printf("TPM2_Quote: success\n");
@ -199,8 +193,16 @@ int TPM2_Quote_Test(void* userCtx)
}
printf("TPM with signature attests (type 0x%x):\n", attestedData.type);
printf("\tTPM signed %lu PCR\n",
printf("\tTPM signed %lu count of PCRs\n",
(unsigned long)attestedData.attested.quote.pcrSelect.count);
#ifdef WOLFTPM_DEBUG_VERBOSE
printf("\tPCR digest:\n");
TPM2_PrintBin(attestedData.attested.quote.pcrDigest.buffer,
attestedData.attested.quote.pcrDigest.size);
printf("\tTPM generated signature:\n");
TPM2_PrintBin(cmdOut.quoteResult.signature.signature.rsassa.sig.buffer,
cmdOut.quoteResult.signature.signature.rsassa.sig.size);
#endif
exit: