Refactored ntru_param_sets

2014-03-07 21:56:33 +01:00
parent 0d30d73eb9
commit 7befce8c3f
9 changed files with 173 additions and 244 deletions
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2014 Andreas Steffen
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * Copyright (C) 2009-2013  Security Innovation
+ *
+ * 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_param_set ntru_param_set
+ * @{ @ingroup ntru_p
+ */
+
+#ifndef NTRU_PARAM_SET_H_
+#define NTRU_PARAM_SET_H_
+
+typedef enum ntru_param_set_id_t ntru_param_set_id_t;
+typedef struct ntru_param_set_t ntru_param_set_t;
+
+#include <library.h>
+
+/**
+ * NTRU encryption parameter set ID list
+ */
+enum ntru_param_set_id_t {
+	NTRU_EES401EP1,
+	NTRU_EES449EP1,
+	NTRU_EES677EP1,
+	NTRU_EES1087EP2,
+	NTRU_EES541EP1,
+	NTRU_EES613EP1,
+	NTRU_EES887EP1,
+	NTRU_EES1171EP1,
+	NTRU_EES659EP1,
+	NTRU_EES761EP1,
+	NTRU_EES1087EP1,
+	NTRU_EES1499EP1,
+	NTRU_EES401EP2,
+	NTRU_EES439EP1,
+	NTRU_EES593EP1,
+	NTRU_EES743EP1,
+};
+
+/**
+ * NTRU encryption parameter set definitions
+ */
+struct ntru_param_set_t {
+	ntru_param_set_id_t id;    /* NTRU parameter set ID */
+	uint8_t  oid[3];           /* pointer to OID */
+	uint8_t  der_id;           /* parameter-set DER id */
+	uint8_t  N_bits;           /* no. of bits in N (i.e. in an index */
+	uint16_t N;                /* ring dimension */
+	uint16_t sec_strength_len; /* no. of octets of security strength */
+	uint16_t q;                /* big modulus */
+	uint8_t  q_bits;           /* no. of bits in q (i.e. in a coefficient */
+	bool     is_product_form;  /* if product form used */
+	uint32_t dF_r;             /* no. of +1 or -1 coefficients in ring elements
+                                  F, r */
+	uint16_t dg;               /* no. - 1 of +1 coefficients or
+                                  no.     of -1 coefficients in ring element g */
+	uint16_t m_len_max;        /* max no. of plaintext octets */
+	uint16_t min_msg_rep_wt;   /* min. message representative weight */
+	uint8_t  c_bits;           /* no. bits in candidate for deriving an index */
+	uint8_t  m_len_len;        /* no. of octets to hold mLenOctets */
+};
+
+/**
+ * Get NTRU encryption parameter set by NTRU parameter set ID
+ *
+ * @param id	NTRU parameter set ID
+ * @return		NTRU parameter set
+*/
+ntru_param_set_t* ntru_param_set_get_by_id(ntru_param_set_id_t id);
+
+/**
+ * Get NTRU encryption parameter set by NTRU parameter set OID
+ *
+ * @param oid	NTRU parameter set OID
+ * @return		NTRU parameter set
+*/
+ntru_param_set_t* ntru_param_set_get_by_oid(uint8_t const *oid);
+
+#endif /** NTRU_PARAM_SET_H_ @}*/
+