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Set pcr transform field depending on measuring algorithm

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This commit is contained in:
Sansar Choinyambuu
2011-11-28 21:22:51 +01:00
committed by Andreas Steffen
parent 824a7824dc
commit 51b0005277
3 changed files with 39 additions and 25 deletions
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src/libpts/pts/components/ita/ita_comp_tgrub.c
+17 -2
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@@ -71,6 +71,8 @@ METHOD(pts_component_t, measure, status_t,
u_int32_t extended_pcr;
time_t measurement_time;
chunk_t measurement, pcr_before, pcr_after;
pts_pcr_transform_t pcr_transform;
pts_meas_algorithms_t hash_algo;
/* Provisional implementation for TGRUB */
extended_pcr = PCR_DEBUG;
@@ -82,6 +84,19 @@ METHOD(pts_component_t, measure, status_t,
return FAILED;
}
hash_algo = pts->get_meas_algorithm(pts);
switch (hash_algo)
{
case PTS_MEAS_ALGO_SHA1:
pcr_transform = PTS_PCR_TRANSFORM_MATCH;
case PTS_MEAS_ALGO_SHA256:
case PTS_MEAS_ALGO_SHA384:
pcr_transform = PTS_PCR_TRANSFORM_LONG;
case PTS_MEAS_ALGO_NONE:
default:
pcr_transform = PTS_PCR_TRANSFORM_NO;
}
measurement = chunk_alloc(HASH_SIZE_SHA1);
memset(measurement.ptr, 0x00, measurement.len);
@@ -89,8 +104,8 @@ METHOD(pts_component_t, measure, status_t,
memset(pcr_before.ptr, 0x00, pcr_before.len);
evid = *evidence = pts_comp_evidence_create(this->name->clone(this->name),
0, extended_pcr,
PTS_MEAS_ALGO_SHA1, PTS_PCR_TRANSFORM_NO,
this->depth, extended_pcr,
hash_algo, pcr_transform,
measurement_time, measurement);
evid->set_pcr_info(evid, pcr_before, pcr_after);