1 files changed, 46 insertions, 0 deletions
diff --git a/src/security/tpm/tcg-2.0/tpm2_marshaling.h b/src/security/tpm/tcg-2.0/tpm2_marshaling.h
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index 0000000000..5802044378
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+++ b/src/security/tpm/tcg-2.0/tpm2_marshaling.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2016 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef __SRC_LIB_TPM2_MARSHALING_H
+#define __SRC_LIB_TPM2_MARSHALING_H
+
+#include <commonlib/iobuf.h>
+#include "tpm2_tlcl_structures.h"
+
+/* The below functions are used to serialize/deserialize TPM2 commands. */
+
+/**
+ * tpm_marshal_command
+ *
+ * Given a structure containing a TPM2 command, serialize the structure for
+ * sending it to the TPM.
+ *
+ * @command: code of the TPM2 command to marshal
+ * @tpm_command_body: a pointer to the command specific structure
+ * @ob: output buffer where command is marshaled to
+ *
+ * Returns 0 on success or -1 on error.
+ *
+ */
+int tpm_marshal_command(TPM_CC command, void *tpm_command_body,
+			struct obuf *ob);
+
+/**
+ * tpm_unmarshal_response
+ *
+ * Given a buffer received from the TPM in response to a certain command,
+ * deserialize the buffer into the expeced response structure.
+ *
+ * struct tpm2_response is a union of all possible responses.
+ *
+ * @command: code of the TPM2 command for which a response is unmarshaled
+ * @ib: input buffer containing the serialized response.
+ *
+ * Returns a pointer to the deserialized response or NULL in case of
+ * unmarshaling problems.
+ */
+struct tpm2_response *tpm_unmarshal_response(TPM_CC command, struct ibuf *ib);
+
+#endif // __SRC_LIB_TPM2_MARSHALING_H