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Optimize ntru_poly constructors some more

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This commit is contained in:
Andreas Steffen
2014-02-27 23:06:51 +01:00
parent 1d252e9dec
commit d6ce8da6c0
1 changed files with 24 additions and 26 deletions
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src/libstrongswan/plugins/ntru/ntru_poly.c
+24 -26
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@@ -239,11 +239,29 @@ METHOD(ntru_poly_t, destroy, void,
free(this); free(this);
} }
static void init_indices(private_ntru_poly_t *this, bool is_product_form, /**
uint32_t indices_len_p, uint32_t indices_len_m) * Creates an empty ntru_poly_t object with space allocated for indices
*/
static private_ntru_poly_t* ntru_poly_create(uint16_t N, uint16_t q,
uint32_t indices_len_p,
uint32_t indices_len_m,
bool is_product_form)
{ {
private_ntru_poly_t *this;
int n; int n;
INIT(this,
.public = {
.get_size = _get_size,
.get_indices = _get_indices,
.get_array = _get_array,
.ring_mult = _ring_mult,
.destroy = _destroy,
},
.N = N,
.q = q,
);
if (is_product_form) if (is_product_form)
{ {
this->num_polynomials = 3; this->num_polynomials = 3;
@@ -265,6 +283,8 @@ static void init_indices(private_ntru_poly_t *this, bool is_product_form,
this->num_indices = indices_len_p + indices_len_m; this->num_indices = indices_len_p + indices_len_m;
} }
this->indices = malloc(sizeof(uint16_t) * this->num_indices); this->indices = malloc(sizeof(uint16_t) * this->num_indices);
return this;
} }
/* /*
@@ -291,19 +311,8 @@ ntru_poly_t *ntru_poly_create_from_seed(hash_algorithm_t alg, chunk_t seed,
} }
i = hash_len = mgf1->get_hash_size(mgf1); i = hash_len = mgf1->get_hash_size(mgf1);
INIT(this, this = ntru_poly_create(N, q, indices_len_p, indices_len_m, is_product_form);
.public = {
.get_size = _get_size,
.get_indices = _get_indices,
.get_array = _get_array,
.ring_mult = _ring_mult,
.destroy = _destroy,
},
.N = N,
.q = q,
);
init_indices(this, is_product_form, indices_len_p, indices_len_m);
used = malloc(N); used = malloc(N);
limit = N * ((1 << c_bits) / N); limit = N * ((1 << c_bits) / N);
@@ -390,19 +399,8 @@ ntru_poly_t *ntru_poly_create_from_data(uint16_t *data, uint16_t N, uint16_t q,
private_ntru_poly_t *this; private_ntru_poly_t *this;
int i; int i;
INIT(this, this = ntru_poly_create(N, q, indices_len_p, indices_len_m, is_product_form);
.public = {
.get_size = _get_size,
.get_indices = _get_indices,
.get_array = _get_array,
.ring_mult = _ring_mult,
.destroy = _destroy,
},
.N = N,
.q = q,
);
init_indices(this, is_product_form, indices_len_p, indices_len_m);
for (i = 0; i < this->num_indices; i++) for (i = 0; i < this->num_indices; i++)
{ {
this->indices[i] = data[i]; this->indices[i] = data[i];