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, 79 insertions, 0 deletions

diff --git a/SequenceUpdate.c b/SequenceUpdate.c
new file mode 100644
index 0000000..19ee845
--- /dev/null
+++ b/SequenceUpdate.c
@@ -0,0 +1,79 @@
+// 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"
+#include "SequenceUpdate_fp.h"
+//
+//
+//     Error Returns                   Meaning
+//
+//     TPM_RC_MODE                     sequenceHandle does not reference a hash or HMAC sequence
+//                                     object
+//
+TPM_RC
+TPM2_SequenceUpdate(
+   SequenceUpdate_In     *in               // IN: input parameter list
+   )
+{
+   OBJECT                      *object;
+
+// Input Validation
+
+   // Get sequence object pointer
+   object = ObjectGet(in->sequenceHandle);
+
+   // Check that referenced object is a sequence object.
+   if(!ObjectIsSequence(object))
+       return TPM_RC_MODE + RC_SequenceUpdate_sequenceHandle;
+
+// Internal Data Update
+
+   if(object->attributes.eventSeq == SET)
+   {
+       // Update event sequence object
+       UINT32           i;
+       HASH_OBJECT     *hashObject = (HASH_OBJECT *)object;
+       for(i = 0; i < HASH_COUNT; i++)
+       {
+           // Update sequence object
+           CryptUpdateDigest2B(&hashObject->state.hashState[i], &in->buffer.b);
+       }
+   }
+   else
+   {
+       HASH_OBJECT     *hashObject = (HASH_OBJECT *)object;
+
+       // Update hash/HMAC sequence object
+       if(hashObject->attributes.hashSeq == SET)
+       {
+           // Is this the first block of the sequence
+           if(hashObject->attributes.firstBlock == CLEAR)
+           {
+               // If so, indicate that first block was received
+               hashObject->attributes.firstBlock = SET;
+
+                // Check the first block to see if the first block can contain
+                // the TPM_GENERATED_VALUE. If it does, it is not safe for
+                // a ticket.
+                if(TicketIsSafe(&in->buffer.b))
+                    hashObject->attributes.ticketSafe = SET;
+            }
+            // Update sequence object hash/HMAC stack
+            CryptUpdateDigest2B(&hashObject->state.hashState[0], &in->buffer.b);
+
+       }
+       else if(object->attributes.hmacSeq == SET)
+       {
+           HASH_OBJECT     *hashObject = (HASH_OBJECT *)object;
+
+            // Update sequence object hash/HMAC stack
+            CryptUpdateDigest2B(&hashObject->state.hmacState, &in->buffer.b);
+       }
+   }
+
+   return TPM_RC_SUCCESS;
+}