Imported Upstream version 0.3.9upstream/0.3.9upstream

1 files changed, 74 insertions, 0 deletions

diff --git a/src/tspi/tspi_random.c b/src/tspi/tspi_random.c
new file mode 100644
index 0000000..9fe8c27
--- /dev/null
+++ b/src/tspi/tspi_random.c
@@ -0,0 +1,74 @@
+
+/*
+ * Licensed Materials - Property of IBM
+ *
+ * trousers - An open source TCG Software Stack
+ *
+ * (C) Copyright International Business Machines Corp. 2004-2006
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.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"
+
+
+TSS_RESULT
+Tspi_TPM_GetRandom(TSS_HTPM hTPM,		/* in */
+		   UINT32 ulRandomDataLength,	/* in */
+		   BYTE ** prgbRandomData)	/* out */
+{
+	TSS_HCONTEXT tspContext;
+	TSS_RESULT result;
+
+	if (prgbRandomData == NULL || ulRandomDataLength > 4096)
+		return TSPERR(TSS_E_BAD_PARAMETER);
+
+	if ((result = obj_tpm_get_tsp_context(hTPM, &tspContext)))
+		return result;
+
+	if (ulRandomDataLength == 0)
+		return TSS_SUCCESS;
+
+	if ((result = TCS_API(tspContext)->GetRandom(tspContext, ulRandomDataLength,
+						     prgbRandomData)))
+		return result;
+
+	if ((result = __tspi_add_mem_entry(tspContext, *prgbRandomData))) {
+		free(*prgbRandomData);
+		*prgbRandomData = NULL;
+		return result;
+	}
+
+	return TSS_SUCCESS;
+}
+
+TSS_RESULT
+Tspi_TPM_StirRandom(TSS_HTPM hTPM,		/* in */
+		    UINT32 ulEntropyDataLength,	/* in */
+		    BYTE * rgbEntropyData)	/* in */
+{
+	TSS_RESULT result;
+	TSS_HCONTEXT tspContext;
+
+	if (ulEntropyDataLength > 0 && rgbEntropyData == NULL)
+		return TSPERR(TSS_E_BAD_PARAMETER);
+
+	if ((result = obj_tpm_get_tsp_context(hTPM, &tspContext)))
+		return result;
+
+	if ((result = TCS_API(tspContext)->StirRandom(tspContext, ulEntropyDataLength,
+						      rgbEntropyData)))
+		return result;
+
+	return TSS_SUCCESS;
+}