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SAE: Store the group order in EC context data

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This makes the SAE implementation a bit simpler by not having to build
the bignum for group order during execution.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2013-01-01 11:54:54 +02:00
parent 4925b303db
commit ce46ec8df0
3 changed files with 24 additions and 13 deletions
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12
src/crypto/crypto_openssl.c
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@ -901,6 +901,7 @@ struct crypto_ec {
EC_GROUP *group;
BN_CTX *bnctx;
size_t prime_len;
BIGNUM *order;
};
struct crypto_ec * crypto_ec_init(int group)
@ -917,7 +918,9 @@ struct crypto_ec * crypto_ec_init(int group)
e->prime_len = 32;
e->bnctx = BN_CTX_new();
e->group = EC_GROUP_new_by_curve_name(NID_X9_62_prime256v1);
if (e->group == NULL || e->bnctx == NULL) {
e->order = BN_new();
if (e->group == NULL || e->bnctx == NULL || e->order == NULL ||
!EC_GROUP_get_order(e->group, e->order, e->bnctx)) {
crypto_ec_deinit(e);
e = NULL;
}
@ -930,6 +933,7 @@ void crypto_ec_deinit(struct crypto_ec *e)
{
if (e == NULL)
return;
BN_free(e->order);
EC_GROUP_free(e->group);
BN_CTX_free(e->bnctx);
os_free(e);
@ -950,6 +954,12 @@ size_t crypto_ec_prime_len(struct crypto_ec *e)
}
const struct crypto_bignum * crypto_ec_get_order(struct crypto_ec *e)
{
return (const struct crypto_bignum *) e->order;
}
void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear)
{
if (clear)