1 files changed, 124 insertions, 0 deletions
diff --git a/src/tspi/tsp_tick.c b/src/tspi/tsp_tick.c
new file mode 100644
index 0000000..dd20bec
--- /dev/null
+++ b/src/tspi/tsp_tick.c
@@ -0,0 +1,124 @@
+
+/*
+ * Licensed Materials - Property of IBM
+ *
+ * trousers - An open source TCG Software Stack
+ *
+ * (C) Copyright International Business Machines Corp. 2004-2007
+ *
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "trousers/tss.h"
+#include "trousers/trousers.h"
+#include "trousers_types.h"
+#include "spi_utils.h"
+#include "capabilities.h"
+#include "tsplog.h"
+#include "obj.h"
+
+
+#ifdef TSS_BUILD_TRANSPORT
+TSS_RESULT
+Transport_ReadCurrentTicks(TSS_HCONTEXT tspContext,           /* in */
+			   UINT32*      pulCurrentTime,       /* out */
+			   BYTE**       prgbCurrentTime)      /* out */
+{
+	TSS_RESULT result;
+	UINT32 decLen = 0;
+	BYTE *dec = NULL;
+	TCS_HANDLE handlesLen = 0;
+
+	if ((result = obj_context_transport_init(tspContext)))
+		return result;
+
+	LogDebugFn("Executing in a transport session");
+
+	if ((result = obj_context_transport_execute(tspContext, TPM_ORD_GetTicks, 0, NULL,
+						    NULL, &handlesLen, NULL, NULL, NULL, &decLen,
+						    &dec)))
+		return result;
+
+	*pulCurrentTime = decLen;
+	*prgbCurrentTime = dec;
+
+	return TSS_SUCCESS;
+}
+
+TSS_RESULT
+Transport_TickStampBlob(TSS_HCONTEXT   tspContext,            /* in */
+			TCS_KEY_HANDLE hKey,                  /* in */
+			TPM_NONCE*     antiReplay,            /* in */
+			TPM_DIGEST*    digestToStamp,	      /* in */
+			TPM_AUTH*      privAuth,              /* in, out */
+			UINT32*        pulSignatureLength,    /* out */
+			BYTE**         prgbSignature,	      /* out */
+			UINT32*        pulTickCountLength,    /* out */
+			BYTE**         prgbTickCount)	      /* out */
+{
+	TSS_RESULT result;
+	UINT32 handlesLen, decLen = 0;
+	TCS_HANDLE *handles, handle;
+	BYTE *dec = NULL;
+	UINT64 offset;
+	TPM_DIGEST pubKeyHash;
+	Trspi_HashCtx hashCtx;
+	BYTE data[sizeof(TPM_NONCE) + sizeof(TPM_DIGEST)];
+
+	if ((result = obj_context_transport_init(tspContext)))
+		return result;
+
+	LogDebugFn("Executing in a transport session");
+
+	if ((result = obj_tcskey_get_pubkeyhash(hKey, pubKeyHash.digest)))
+		return result;
+
+	result = Trspi_HashInit(&hashCtx, TSS_HASH_SHA1);
+	result |= Trspi_Hash_DIGEST(&hashCtx, pubKeyHash.digest);
+	if ((result |= Trspi_HashFinal(&hashCtx, pubKeyHash.digest)))
+		return result;
+
+	handlesLen = 1;
+	handle = hKey;
+	handles = &handle;
+
+	offset = 0;
+	Trspi_LoadBlob_NONCE(&offset, data, antiReplay);
+	Trspi_LoadBlob_DIGEST(&offset, data, digestToStamp);
+
+	if ((result = obj_context_transport_execute(tspContext, TPM_ORD_TickStampBlob, sizeof(data),
+						    data, &pubKeyHash, &handlesLen, &handles,
+						    privAuth, NULL, &decLen, &dec)))
+		return result;
+
+	offset = 0;
+	Trspi_UnloadBlob_CURRENT_TICKS(&offset, dec, NULL);
+	*pulTickCountLength = (UINT32)offset;
+	if ((*prgbTickCount = malloc(*pulTickCountLength)) == NULL) {
+		free(dec);
+		LogError("malloc of %u bytes failed", *pulTickCountLength);
+		return TSPERR(TSS_E_OUTOFMEMORY);
+	}
+	offset = 0;
+	Trspi_UnloadBlob(&offset, *pulTickCountLength, dec, *prgbTickCount);
+
+	Trspi_UnloadBlob_UINT32(&offset, pulSignatureLength, dec);
+	if ((*prgbSignature = malloc(*pulSignatureLength)) == NULL) {
+		free(dec);
+		free(*prgbTickCount);
+		*pulTickCountLength = 0;
+		LogError("malloc of %u bytes failed", *pulSignatureLength);
+		*pulSignatureLength = 0;
+		return TSPERR(TSS_E_OUTOFMEMORY);
+	}
+	Trspi_UnloadBlob(&offset, *pulSignatureLength, dec, *prgbSignature);
+
+	free(dec);
+
+	return result;
+}
+#endif