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FAPI: Improve error message Fapi_Quote #2764

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Jan 31, 2024
Merged

FAPI: Improve error message Fapi_Quote #2764

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15 changes: 14 additions & 1 deletion src/tss2-fapi/ifapi_helpers.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2051,7 +2051,20 @@ ifapi_extend_vpcr(
}
}
if (event->digests.count > 0 && i == event->digests.count && !zero_digest) {
LOG_ERROR("No digest for bank %"PRIu16" found in event", bank);
LOG_ERROR("No digest for bank %"PRIu16" found in event."
"\n\nThe bank for each pcr register can be set in the FAPI profile. If, for example,"
"\nno digest for the default bank sha256 (11) exists in the eventlog of a"
"\ncertain PCR register the PCR selection has to be adapted. E.g.:"
"\n\n\"pcr_selection\": ["
"\n { \"hash\": \"TPM2_ALG_SHA1\","
"\n \"pcrSelect\": [ 0, 10 ],"
"\n },"
"\n { \"hash\": \"TPM2_ALG_SHA256\","
"\n \"pcrSelect\": [ 1, 2, ,3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15,"
"16, 17, 18, 19, 20, 21, 22, 23 ]"
"\n }"
"\n],"
, bank);
return TSS2_FAPI_RC_BAD_VALUE;
}
LOGBLOB_TRACE(&vpcr->buffer[0], vpcr->size, "New vpcr value");
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