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Use already negotiated Measurement algorithm as Hashing algorithm for Diffie Hellman secret calculation

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This commit is contained in:
Sansar Choinyambuu
2011-11-28 14:34:21 +01:00
committed by Andreas Steffen
parent b46930bf5f
commit 20c70d9839
2 changed files with 43 additions and 22 deletions
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src/libimcv/plugins/imv_attestation/imv_attestation.c
+4 -18
View File
@@ -588,29 +588,15 @@ TNC_Result TNC_IMV_ReceiveMessage(TNC_IMVID imv_id,
dh_group = attr_cast->get_dh_group(attr_cast);
offered_algorithms = attr_cast->get_hash_algo_set(attr_cast);
if ((supported_algorithms & PTS_MEAS_ALGO_SHA384) &&
(offered_algorithms & PTS_MEAS_ALGO_SHA384))
{
pts->set_meas_algorithm(pts, PTS_MEAS_ALGO_SHA384);
}
else if ((supported_algorithms & PTS_MEAS_ALGO_SHA256) &&
(offered_algorithms & PTS_MEAS_ALGO_SHA256))
{
pts->set_meas_algorithm(pts, PTS_MEAS_ALGO_SHA256);
}
else if ((supported_algorithms & PTS_MEAS_ALGO_SHA1) &&
(offered_algorithms & PTS_MEAS_ALGO_SHA1))
{
pts->set_meas_algorithm(pts, PTS_MEAS_ALGO_SHA1);
}
else
if (!(offered_algorithms & PTS_MEAS_ALGO_SHA1) &&
!(offered_algorithms & PTS_MEAS_ALGO_SHA256) &&
!(offered_algorithms & PTS_MEAS_ALGO_SHA384))
{
attr = pts_hash_alg_error_create(supported_algorithms);
attr_list->insert_last(attr_list, attr);
break;
}
/* Use already negotiated measurement algorithm */
selected_algorithm = pts->get_meas_algorithm(pts);
responder_nonce = attr_cast->get_responder_nonce(attr_cast);
responder_pub_val = attr_cast->get_responder_pub_val(attr_cast);