- if (
- /* if we are considering an ECC cipher suite that uses our certificate */
- (alg_a & SSL_aECDSA || alg_a & SSL_aECDH)
- /* and we have an ECC certificate */
- && (s->cert->pkeys[SSL_PKEY_ECC].x509 != NULL)
- /* and the client specified a Supported Point Formats extension */
- && ((s->session->tlsext_ecpointformatlist_length > 0) && (s->session->tlsext_ecpointformatlist != NULL))
- /* and our certificate's point is compressed */
- && (
- (s->cert->pkeys[SSL_PKEY_ECC].x509->cert_info != NULL)
- && (s->cert->pkeys[SSL_PKEY_ECC].x509->cert_info->key != NULL)
- && (s->cert->pkeys[SSL_PKEY_ECC].x509->cert_info->key->public_key != NULL)
- && (s->cert->pkeys[SSL_PKEY_ECC].x509->cert_info->key->public_key->data != NULL)
- && (
- (*(s->cert->pkeys[SSL_PKEY_ECC].x509->cert_info->key->public_key->data) == POINT_CONVERSION_COMPRESSED)
- || (*(s->cert->pkeys[SSL_PKEY_ECC].x509->cert_info->key->public_key->data) == POINT_CONVERSION_COMPRESSED + 1)
- )
- )
- )
- {
- ec_ok = 0;
- /* if our certificate's curve is over a field type that the client does not support
- * then do not allow this cipher suite to be negotiated */
- if (
- (s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec != NULL)
- && (s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group != NULL)
- && (s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group->meth != NULL)
- && (EC_METHOD_get_field_type(s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group->meth) == NID_X9_62_prime_field)
- )
- {
- for (j = 0; j < s->session->tlsext_ecpointformatlist_length; j++)
- {
- if (s->session->tlsext_ecpointformatlist[j] == TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime)
- {
- ec_ok = 1;
- break;
- }
- }
- }
- else if (EC_METHOD_get_field_type(s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group->meth) == NID_X9_62_characteristic_two_field)
- {
- for (j = 0; j < s->session->tlsext_ecpointformatlist_length; j++)
- {
- if (s->session->tlsext_ecpointformatlist[j] == TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2)
- {
- ec_ok = 1;
- break;
- }
- }
- }
- ok = ok && ec_ok;
- }
- if (
- /* if we are considering an ECC cipher suite that uses our certificate */
- (alg_a & SSL_aECDSA || alg_a & SSL_aECDH)
- /* and we have an ECC certificate */
- && (s->cert->pkeys[SSL_PKEY_ECC].x509 != NULL)
- /* and the client specified an EllipticCurves extension */
- && ((s->session->tlsext_ellipticcurvelist_length > 0) && (s->session->tlsext_ellipticcurvelist != NULL))
- )
- {
- ec_ok = 0;
- if (
- (s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec != NULL)
- && (s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group != NULL)
- )
- {
- ec_nid = EC_GROUP_get_curve_name(s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group);
- if ((ec_nid == 0)
- && (s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group->meth != NULL)
- )
- {
- if (EC_METHOD_get_field_type(s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group->meth) == NID_X9_62_prime_field)
- {
- ec_search1 = 0xFF;
- ec_search2 = 0x01;
- }
- else if (EC_METHOD_get_field_type(s->cert->pkeys[SSL_PKEY_ECC].privatekey->pkey.ec->group->meth) == NID_X9_62_characteristic_two_field)
- {
- ec_search1 = 0xFF;
- ec_search2 = 0x02;
- }
- }
- else
- {
- ec_search1 = 0x00;
- ec_search2 = tls1_ec_nid2curve_id(ec_nid);
- }
- if ((ec_search1 != 0) || (ec_search2 != 0))
- {
- for (j = 0; j < s->session->tlsext_ellipticcurvelist_length / 2; j++)
- {
- if ((s->session->tlsext_ellipticcurvelist[2*j] == ec_search1) && (s->session->tlsext_ellipticcurvelist[2*j+1] == ec_search2))
- {
- ec_ok = 1;
- break;
- }
- }
- }
- }
- ok = ok && ec_ok;
- }
- if (
- /* if we are considering an ECC cipher suite that uses an ephemeral EC key */
- (alg_k & SSL_kEECDH)
- /* and we have an ephemeral EC key */
- && (s->cert->ecdh_tmp != NULL)
- /* and the client specified an EllipticCurves extension */
- && ((s->session->tlsext_ellipticcurvelist_length > 0) && (s->session->tlsext_ellipticcurvelist != NULL))
- )
- {
- ec_ok = 0;
- if (s->cert->ecdh_tmp->group != NULL)
- {
- ec_nid = EC_GROUP_get_curve_name(s->cert->ecdh_tmp->group);
- if ((ec_nid == 0)
- && (s->cert->ecdh_tmp->group->meth != NULL)
- )
- {
- if (EC_METHOD_get_field_type(s->cert->ecdh_tmp->group->meth) == NID_X9_62_prime_field)
- {
- ec_search1 = 0xFF;
- ec_search2 = 0x01;
- }
- else if (EC_METHOD_get_field_type(s->cert->ecdh_tmp->group->meth) == NID_X9_62_characteristic_two_field)
- {
- ec_search1 = 0xFF;
- ec_search2 = 0x02;
- }
- }
- else
- {
- ec_search1 = 0x00;
- ec_search2 = tls1_ec_nid2curve_id(ec_nid);
- }
- if ((ec_search1 != 0) || (ec_search2 != 0))
- {
- for (j = 0; j < s->session->tlsext_ellipticcurvelist_length / 2; j++)
- {
- if ((s->session->tlsext_ellipticcurvelist[2*j] == ec_search1) && (s->session->tlsext_ellipticcurvelist[2*j+1] == ec_search2))
- {
- ec_ok = 1;
- break;
- }
- }
- }
- }
- ok = ok && ec_ok;
- }