1 files changed, 92 insertions, 0 deletions
diff --git a/src/libstrongswan/plugins/ntru/ntru_private_key.h b/src/libstrongswan/plugins/ntru/ntru_private_key.h
new file mode 100644
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--- /dev/null
+++ b/src/libstrongswan/plugins/ntru/ntru_private_key.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2014 Andreas Steffen
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup ntru_private_key ntru_private_key
+ * @{ @ingroup ntru_p
+ */
+
+#ifndef NTRU_PRIVATE_KEY_H_
+#define NTRU_PRIVATE_KEY_H_
+
+typedef struct ntru_private_key_t ntru_private_key_t;
+
+#include "ntru_drbg.h"
+#include "ntru_param_set.h"
+#include "ntru_public_key.h"
+
+#include <library.h>
+
+/**
+ * Implements an NTRU encryption public/private key pair
+ */
+struct ntru_private_key_t {
+
+	/**
+	 * Returns NTRU parameter set ID of the private key
+	 *
+	 * @return			NTRU parameter set ID
+	 */
+	ntru_param_set_id_t (*get_id)(ntru_private_key_t *this);
+
+	/**
+	 * Returns the NTRU encryption public key as an encoded binary blob
+	 *
+	 * @return				NTRU encryption public key (must be freed after use)
+	 */
+	ntru_public_key_t* (*get_public_key)(ntru_private_key_t *this);
+
+	/**
+	 * Returns the packed encoding of the NTRU encryption private key
+	 *
+	 * @return				Packed encoding of NTRU encryption private key
+	 */
+	chunk_t (*get_encoding)(ntru_private_key_t *this);
+
+	/**
+	 * Decrypts an NTRU ciphertext
+	 *
+	 * @param ciphertext	NTRU Ciphertext
+	 * @param plaintext		Plaintext
+	 * @return				TRUE if decryption was successful
+	 */
+	bool (*decrypt)(ntru_private_key_t *this, chunk_t ciphertext,
+					chunk_t *plaintext);
+
+	/**
+	 * Destroy ntru_private_key_t object
+	 */
+	void (*destroy)(ntru_private_key_t *this);
+};
+
+/**
+ * Creates an NTRU encryption public/private key pair using a NIST DRBG
+ *
+ * @param drbg			Digital Random Bit Generator used for key generation
+ * @param params		NTRU encryption parameter set to be used
+ */
+ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg, ntru_param_set_t *params);
+
+/**
+ * Creates an NTRU encryption private key from encoding
+ *
+ * @param drbg			Deterministic random bit generator
+ * @param data			Encoded NTRU private key
+ */
+ntru_private_key_t *ntru_private_key_create_from_data(ntru_drbg_t *drbg,
+													  chunk_t data);
+
+#endif /** NTRU_PRIVATE_KEY_H_ @}*/
+