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diff --git a/TPM2-Plugin/lib/include/tpm2_convert.h b/TPM2-Plugin/lib/include/tpm2_convert.h
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+++ b/TPM2-Plugin/lib/include/tpm2_convert.h
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+//**********************************************************************;
+// Copyright (c) 2017, SUSE GmbH
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimer in the documentation
+// and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+// THE POSSIBILITY OF SUCH DAMAGE.
+//**********************************************************************;
+
+#ifndef CONVERSION_H
+#define CONVERSION_H
+
+#include <stdbool.h>
+
+#include <tss2/tss2_sys.h>
+
+typedef enum tpm2_convert_pubkey_fmt tpm2_convert_pubkey_fmt;
+enum tpm2_convert_pubkey_fmt {
+    pubkey_format_tss,
+    pubkey_format_pem,
+    pubkey_format_der,
+    pubkey_format_err
+};
+
+typedef enum tpm2_convert_sig_fmt tpm2_convert_sig_fmt;
+enum tpm2_convert_sig_fmt {
+    signature_format_tss,
+    signature_format_plain,
+    signature_format_err
+};
+
+/**
+ * Parses the given command line public key format option string and returns
+ * the corresponding pubkey_format enum value.
+ *
+ * LOG_ERR is used to communicate errors.
+ *
+ * @return
+ *   On error pubkey_format_err is returned.
+ */
+tpm2_convert_pubkey_fmt tpm2_convert_pubkey_fmt_from_optarg(const char *label);
+
+/**
+ * Converts the given public key structure into the requested target format
+ * and writes the result to the given file system path.
+ *
+ * LOG_ERR is used to communicate errors.
+ */
+bool tpm2_convert_pubkey_save(TPM2B_PUBLIC *public, tpm2_convert_pubkey_fmt format, const char *path);
+
+/**
+ * Loads a public key in the TSS format from a file.
+ * @param public
+ *  The public key to load
+ * @param format
+ * @param path
+ * @return
+ */
+bool tpm2_convert_pubkey_load(TPM2B_PUBLIC *public, const char *path);
+
+/**
+ * Parses the given command line signature format option string and returns
+ * the corresponding signature_format enum value.
+ *
+ * LOG_ERR is used to communicate errors.
+ *
+ * @return
+ *   On error signature_format_err is returned.
+ */
+tpm2_convert_sig_fmt tpm2_convert_sig_fmt_from_optarg(const char *label);
+
+/**
+ * Converts the given signature data into the requested target format and
+ * writes the result to the given file system path.
+ *
+ * LOG_ERR is used to communicate errors.
+ */
+bool tpm2_convert_sig(TPMT_SIGNATURE *signature, tpm2_convert_sig_fmt format,
+        const char *path);
+
+#endif /* CONVERSION_H */