Imported Upstream version 0.3.9upstream/0.3.9upstream

1 files changed, 89 insertions, 0 deletions

diff --git a/src/tspi/tsp_random.c b/src/tspi/tsp_random.c
new file mode 100644
index 0000000..80aff66
--- /dev/null
+++ b/src/tspi/tsp_random.c
@@ -0,0 +1,89 @@
+
+/*
+ * Licensed Materials - Property of IBM
+ *
+ * trousers - An open source TCG Software Stack
+ *
+ * (C) Copyright International Business Machines Corp. 2004, 2007
+ *
+ */
+
+
+#include <stdlib.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#include "trousers/tss.h"
+#include "trousers/trousers.h"
+#include "trousers_types.h"
+#include "spi_utils.h"
+#include "tsplog.h"
+#include "obj.h"
+
+
+#ifdef TSS_BUILD_TRANSPORT
+TSS_RESULT
+Transport_GetRandom(TSS_HCONTEXT tspContext,	/* in */
+		    UINT32 bytesRequested,	/* in */
+		    BYTE ** randomBytes)	/* out */
+{
+	TSS_RESULT result;
+        UINT32 decLen = 0;
+        BYTE *dec = NULL;
+        UINT64 offset;
+	TCS_HANDLE handlesLen = 0;
+        BYTE data[sizeof(UINT32)];
+
+	if ((result = obj_context_transport_init(tspContext)))
+		return result;
+
+        LogDebugFn("Executing in a transport session");
+
+        offset = 0;
+        Trspi_LoadBlob_UINT32(&offset, bytesRequested, data);
+
+        if ((result = obj_context_transport_execute(tspContext, TPM_ORD_GetRandom, sizeof(data),
+                                                    data, NULL, &handlesLen, NULL, NULL, NULL,
+						    &decLen, &dec)))
+                return result;
+
+	*randomBytes = dec;
+
+        return result;
+
+}
+
+TSS_RESULT
+Transport_StirRandom(TSS_HCONTEXT tspContext,	/* in */
+		     UINT32 inDataSize,	/* in */
+		     BYTE * inData)	/* in */
+{
+	TSS_RESULT result;
+        UINT64 offset;
+	UINT32 dataLen;
+	TCS_HANDLE handlesLen = 0;
+        BYTE *data;
+
+	if ((result = obj_context_transport_init(tspContext)))
+		return result;
+
+        LogDebugFn("Executing in a transport session");
+
+	dataLen = sizeof(UINT32) + inDataSize;
+	if ((data = malloc(dataLen)) == NULL) {
+                LogError("malloc of %u bytes failed", dataLen);
+                return TSPERR(TSS_E_OUTOFMEMORY);
+	}
+
+        offset = 0;
+        Trspi_LoadBlob_UINT32(&offset, inDataSize, data);
+        Trspi_LoadBlob(&offset, inDataSize, data, inData);
+
+	result = obj_context_transport_execute(tspContext, TPM_ORD_StirRandom, dataLen, data, NULL,
+					       &handlesLen, NULL, NULL, NULL, NULL, NULL);
+	free(data);
+
+	return result;
+}
+#endif
+