Initial commit to seed TPM2.0 source code directory

LICENSE file text copied from TCG library specification. README
describes the procedure used to extract source code from parts 3 and 4
of the specification.

The python scripts and part{34}.txt files will be removed in the
following commits.

Change-Id: Ie281e6e988481831f33483053455e8aff8f3f75f
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>

1 files changed, 78 insertions, 0 deletions

diff --git a/_TPM_Hash_End.c b/_TPM_Hash_End.c
new file mode 100644
index 0000000..eb21a63
--- /dev/null
+++ b/_TPM_Hash_End.c
@@ -0,0 +1,78 @@
+// This file was extracted from the TCG Published
+// Trusted Platform Module Library
+// Part 3: Commands
+// Family "2.0"
+// Level 00 Revision 01.16
+// October 30, 2014
+
+#include "InternalRoutines.h"
+//
+//     This function is called to process a _TPM_Hash_End() indication.
+//
+void
+_TPM_Hash_End(
+   void
+   )
+{
+
+   UINT32            i;
+   TPM2B_DIGEST      digest;
+   HASH_OBJECT      *hashObject;
+   TPMI_DH_PCR       pcrHandle;
+
+   // If the DRTM handle is not being used, then either _TPM_Hash_Start has not
+   // been called, _TPM_Hash_End was previously called, or some other command
+   // was executed and the sequence was aborted.
+   if(g_DRTMHandle == TPM_RH_UNASSIGNED)
+       return;
+
+   // Get DRTM sequence object
+   hashObject = (HASH_OBJECT *)ObjectGet(g_DRTMHandle);
+
+   // Is this _TPM_Hash_End after Startup or before
+   if(TPMIsStarted())
+   {
+       // After
+
+         // Reset the DRTM PCR
+         PCRResetDynamics();
+
+         // Extend the DRTM_PCR.
+         pcrHandle = PCR_FIRST + DRTM_PCR;
+
+         // DRTM sequence increments restartCount
+         gr.restartCount++;
+   }
+   else
+   {
+       pcrHandle = PCR_FIRST + HCRTM_PCR;
+   }
+
+   // Complete hash and extend PCR, or if this is an HCRTM, complete
+   // the hash, reset the H-CRTM register (PCR[0]) to 0...04, and then
+   // extend the H-CRTM data
+   for(i = 0; i < HASH_COUNT; i++)
+   {
+       TPMI_ALG_HASH       hash = CryptGetHashAlgByIndex(i);
+       // make sure that the PCR is implemented for this algorithm
+       if(PcrIsAllocated(pcrHandle,
+                           hashObject->state.hashState[i].state.hashAlg))
+       {
+           // Complete hash
+           digest.t.size = CryptGetHashDigestSize(hash);
+           CryptCompleteHash2B(&hashObject->state.hashState[i], &digest.b);
+
+              PcrDrtm(pcrHandle, hash, &digest);
+         }
+   }
+
+   // Flush sequence object.
+//
+   ObjectFlush(g_DRTMHandle);
+
+   g_DRTMHandle = TPM_RH_UNASSIGNED;
+
+   g_DrtmPreStartup = TRUE;
+
+   return;
+}