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Store NTT A of BLISS public key a

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This commit is contained in:
Andreas Steffen
2014-11-29 14:51:17 +01:00
parent 3e1f6edc5a
commit 5a50e364e6
2 changed files with 24 additions and 28 deletions
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src/libstrongswan/plugins/bliss/bliss_public_key.c
+7 -8
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@@ -40,9 +40,9 @@ struct private_bliss_public_key_t {
bliss_param_set_t *set;
/**
* BLISS public key a (coefficients of polynomial (2g + 1)/f)
* NTT of BLISS public key a (coefficients of polynomial (2g + 1)/f)
*/
uint32_t *a;
uint32_t *A;
/**
* reference counter
@@ -116,12 +116,11 @@ static bool verify_bliss_with_sha512(private_bliss_public_key_t *this,
az[i] = z1[i] < 0 ? q + z1[i] : z1[i];
}
fft = bliss_fft_create(this->set->fft_params);
fft->transform(fft, this->a, A, FALSE);
fft->transform(fft, az, az, FALSE);
for (i = 0; i < n; i++)
{
az[i] = (A[i] * az[i]) % q;
az[i] = (this->A[i] * az[i]) % q;
}
fft->transform(fft, az, az, TRUE);
@@ -221,7 +220,7 @@ METHOD(public_key_t, get_encoding, bool,
{
bool success = TRUE;
*encoding = bliss_public_key_info_encode(this->set->oid, this->a, this->set->n);
*encoding = bliss_public_key_info_encode(this->set->oid, this->A, this->set->n);
if (type != PUBKEY_SPKI_ASN1_DER)
{
@@ -244,7 +243,7 @@ METHOD(public_key_t, get_fingerprint, bool,
{
return TRUE;
}
success = bliss_public_key_fingerprint(this->set->oid, this->a,
success = bliss_public_key_fingerprint(this->set->oid, this->A,
this->set->n, type, fp);
lib->encoding->cache(lib->encoding, type, this, *fp);
@@ -264,7 +263,7 @@ METHOD(public_key_t, destroy, void,
if (ref_put(&this->ref))
{
lib->encoding->clear_cache(lib->encoding, this);
free(this->a);
free(this->A);
free(this);
}
}
@@ -376,7 +375,7 @@ bliss_public_key_t *bliss_public_key_load(key_type_t type, va_list args)
{
goto end;
}
this->a = bliss_public_key_from_asn1(object, this->set->n);
this->A = bliss_public_key_from_asn1(object, this->set->n);
break;
}
}