typedef struct private_ntru_ke_t private_ntru_ke_t;
/* Best bandwidth and speed, no X9.98 compatibility */
-static ntru_param_set_id_t param_sets_optimum[] = {
+static const ntru_param_set_id_t param_sets_optimum[] = {
NTRU_EES401EP2, NTRU_EES439EP1, NTRU_EES593EP1, NTRU_EES743EP1
};
/* X9.98/IEEE 1363.1 parameter sets for best speed */
-static ntru_param_set_id_t param_sets_x9_98_speed[] = {
+static const ntru_param_set_id_t param_sets_x9_98_speed[] = {
NTRU_EES659EP1, NTRU_EES761EP1, NTRU_EES1087EP1, NTRU_EES1499EP1
};
/* X9.98/IEEE 1363.1 parameter sets for best bandwidth (smallest size) */
-static ntru_param_set_id_t param_sets_x9_98_bandwidth[] = {
+static const ntru_param_set_id_t param_sets_x9_98_bandwidth[] = {
NTRU_EES401EP1, NTRU_EES449EP1, NTRU_EES677EP1, NTRU_EES1087EP2
};
/* X9.98/IEEE 1363.1 parameter sets balancing speed and bandwidth */
-static ntru_param_set_id_t param_sets_x9_98_balance[] = {
+static const ntru_param_set_id_t param_sets_x9_98_balance[] = {
NTRU_EES541EP1, NTRU_EES613EP1, NTRU_EES887EP1, NTRU_EES1171EP1
};
/**
* NTRU Parameter Set
*/
- ntru_param_set_t *param_set;
+ const ntru_param_set_t *param_set;
/**
* Cryptographical strength in bits of the NTRU Parameter Set
ntru_ke_t *ntru_ke_create(diffie_hellman_group_t group, chunk_t g, chunk_t p)
{
private_ntru_ke_t *this;
- ntru_param_set_id_t *param_sets, param_set_id;
+ const ntru_param_set_id_t *param_sets;
+ ntru_param_set_id_t param_set_id;
rng_t *entropy;
ntru_drbg_t *drbg;
char *parameter_set;
/**
* NTRU encryption parameter set definitions
*/
-static ntru_param_set_t ntru_param_sets[] = {
+static const ntru_param_set_t ntru_param_sets[] = {
/* X9.98/IEEE 1363.1 parameter sets for best bandwidth (smallest size) */
{
/**
* See header.
*/
-ntru_param_set_t* ntru_param_set_get_by_id(ntru_param_set_id_t id)
+const ntru_param_set_t* ntru_param_set_get_by_id(ntru_param_set_id_t id)
{
int i;
/**
* See header.
*/
-ntru_param_set_t* ntru_param_set_get_by_oid(uint8_t const *oid)
+const ntru_param_set_t* ntru_param_set_get_by_oid(uint8_t const *oid)
{
int i;
* NTRU encryption parameter set definitions
*/
struct ntru_param_set_t {
- ntru_param_set_id_t id; /* NTRU parameter set ID */
- uint8_t oid[NTRU_OID_LEN]; /* 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 */
+
+ /**
+ * NTRU parameter set ID
+ */
+ const ntru_param_set_id_t id;
+
+ /**
+ * pointer to OID
+ */
+ const uint8_t oid[NTRU_OID_LEN];
+
+ /**
+ * parameter-set DER id
+ */
+ const uint8_t der_id;
+
+ /**
+ * no. of bits in N (i.e. in an index
+ */
+ const uint8_t N_bits;
+
+ /**
+ * ring dimension
+ */
+ const uint16_t N;
+
+ /**
+ * no. of octets of security strength
+ */
+ const uint16_t sec_strength_len;
+
+ /**
+ * big modulus
+ */
+ const uint16_t q;
+
+ /**
+ * no. of bits in q (i.e. in a coefficient)
+ */
+ const uint8_t q_bits;
+
+ /**
+ * if product form used
+ */
+ const bool is_product_form;
+
+ /**
+ * no. of +1 or -1 coefficients in ring elements F, r
+ */
+ const uint32_t dF_r;
+
+ /**
+ * no. - 1 of +1 coefficients or no. of -1 coefficients in ring element g
+ */
+ const uint16_t dg;
+
+ /**
+ * max no. of plaintext octets
+ */
+ const uint16_t m_len_max;
+
+ /**
+ * min. message representative weight
+ */
+ const uint16_t min_msg_rep_wt;
+
+ /**
+ * no. bits in candidate for deriving an index
+ */
+ const uint8_t c_bits;
+
+ /**
+ * no. of octets to hold mLenOctets
+ */
+ const uint8_t m_len_len;
};
/**
* @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);
+const 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);
+const ntru_param_set_t* ntru_param_set_get_by_oid(uint8_t const *oid);
#endif /** NTRU_PARAM_SET_H_ @}*/
/**
* NTRU Parameter Set
*/
- ntru_param_set_t *params;
+ const ntru_param_set_t *params;
/**
* Polynomial F which is the private key
* Described in header.
*/
ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg,
- ntru_param_set_t *params)
+ const ntru_param_set_t *params)
{
private_ntru_private_key_t *this;
size_t t_len;
size_t privkey_packed_trits_len, privkey_packed_indices_len;
uint8_t *privkey_packed, tag;
uint16_t *indices, dF;
- ntru_param_set_t *params;
+ const ntru_param_set_t *params;
header_len = 2 + NTRU_OID_LEN;
* @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);
+ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg,
+ const ntru_param_set_t *params);
/**
* Creates an NTRU encryption private key from encoding
/**
* NTRU Parameter Set
*/
- ntru_param_set_t *params;
+ const ntru_param_set_t *params;
/**
* Polynomial h which is the public key
* Described in header.
*/
ntru_public_key_t *ntru_public_key_create(ntru_drbg_t *drbg,
- ntru_param_set_t *params,
+ const ntru_param_set_t *params,
uint16_t *pubkey)
{
private_ntru_public_key_t *this;
{
private_ntru_public_key_t *this;
size_t header_len, pubkey_packed_len;
- ntru_param_set_t *params;
+ const ntru_param_set_t *params;
header_len = 2 + NTRU_OID_LEN;
* @param pubkey Coefficients of public key polynomial h
*/
ntru_public_key_t *ntru_public_key_create(ntru_drbg_t *drbg,
- ntru_param_set_t *params,
+ const ntru_param_set_t *params,
uint16_t *pubkey);
/**
projects / thirdparty / strongswan.git / commitdiff
