vTPM/TPM2: Unind group keys and sectors data on disk

Signed-off-by: Quan Xu <quan.xu@intel.com>
Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>

stubdom/vtpmmgr/disk_read.c

@@ -67,6 +67,7 @@ static int find_group_key(struct mem_group *dst,
 		const struct mem_tpm_mgr *parent)
 {
 	int i, rc, rv = 1;
+    unsigned int olen;
 	struct hash160 buf;
 	struct disk_group_sealed_data sealed;
 
@@ -88,7 +89,13 @@ static int find_group_key(struct mem_group *dst,
 		TPM_pcr_digest(&buf, cfg->pcr_selection);
 		if (memcmp(&buf, &cfg->digest_release, 20))
 			continue;
-		rc = TPM_disk_unseal(&sealed, sizeof(sealed), cfg);
+
+        /*TPM 2.0 unbind | TPM 1.x unseal*/
+        if (hw_is_tpm2())
+            rc = TPM2_disk_unbind(&sealed, &olen, cfg);
+        else
+            rc = TPM_disk_unseal(&sealed, sizeof(sealed), cfg);
+
 		if (rc)
 			continue;
 		if (memcmp(&sealed.magic, DISK_GROUP_BOUND_MAGIC, 4))
@@ -112,9 +119,15 @@ static int find_group_key(struct mem_group *dst,
 static int parse_root_key(struct mem_tpm_mgr *dst, struct disk_seal_entry *src)
 {
 	int rc;
+    unsigned int olen;
 	struct disk_root_sealed_data sealed;
 
-	rc = TPM_disk_unseal(&sealed, sizeof(sealed), src);
+    /*TPM 2.0 unbind | TPM 1.x unseal*/
+    if (hw_is_tpm2())
+        rc = TPM2_disk_unbind(&sealed, &olen, src);
+    else
+        rc = TPM_disk_unseal(&sealed, sizeof(sealed), src);
+
 	if (rc)
 		return rc;