crypto/ec/ec_asn1.c

65 int EC_GROUP_get_basis_type(const EC_GROUP *group)
69     if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
74     while (group->poly[i] != 0)
87 int EC_GROUP_get_trinomial_basis(const EC_GROUP *group, unsigned int *k)
89     if (group == NULL)
92     if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
94         || !((group->poly[0] != 0) && (group->poly[1] != 0)
95              && (group->poly[2] == 0))) {
102         *k = group->poly[1];
107 int EC_GROUP_get_pentanomial_basis(const EC_GROUP *group, unsigned int *k1,
110     if (group == NULL)
113     if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
115         || !((group->poly[0] != 0) && (group->poly[1] != 0)
116              && (group->poly[2] != 0) && (group->poly[3] != 0)
117              && (group->poly[4] == 0))) {
124         *k1 = group->poly[3];
126         *k2 = group->poly[2];
128         *k3 = group->poly[1];
311 static int ec_asn1_group2fieldid(const EC_GROUP *group, X9_62_FIELDID *field)
316     if (group == NULL || field == NULL)
325     nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
338         if (!EC_GROUP_get_curve_GFp(group, tmp, NULL, NULL, NULL)) {
367         char_two->m = (long)EC_GROUP_get_degree(group);
369         field_type = EC_GROUP_get_basis_type(group);
384             if (!EC_GROUP_get_trinomial_basis(group, &k))
399             if (!EC_GROUP_get_pentanomial_basis(group, &k1, &k2, &k3))
431 static int ec_asn1_group2curve(const EC_GROUP *group, X9_62_CURVE *curve)
440     if (!group || !curve || !curve->a || !curve->b)
448     nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
452         if (!EC_GROUP_get_curve_GFp(group, NULL, tmp_1, tmp_2, NULL)) {
460         if (!EC_GROUP_get_curve_GF2m(group, NULL, tmp_1, tmp_2, NULL)) {
509     if (group->seed) {
517         if (!ASN1_BIT_STRING_set(curve->seed, group->seed,
518                                  (int)group->seed_len)) {
542 static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *group,
570     if (!ec_asn1_group2fieldid(group, ret->fieldID)) {
576     if (!ec_asn1_group2curve(group, ret->curve)) {
582     if ((point = EC_GROUP_get0_generator(group)) == NULL) {
587     form = EC_GROUP_get_point_conversion_form(group);
589     len = EC_POINT_point2oct(group, point, form, NULL, len, NULL);
598     if (!EC_POINT_point2oct(group, point, form, buffer, len, NULL)) {
612     if (!EC_GROUP_get_order(group, tmp, NULL)) {
623     if (EC_GROUP_get_cofactor(group, tmp, NULL)) {
645 ECPKPARAMETERS *ec_asn1_group2pkparameters(const EC_GROUP *group,
663     if (EC_GROUP_get_asn1_flag(group)) {
667         tmp = EC_GROUP_get_curve_name(group);
679              ec_asn1_group2parameters(group, NULL)) == NULL)
971     EC_GROUP *group = NULL;
981     if ((group = ec_asn1_pkparameters2group(params)) == NULL) {
990         *a = group;
994     return (group);
1037         if (ret->group)
1038             EC_GROUP_clear_free(ret->group);
1039         ret->group = ec_asn1_pkparameters2group(priv_key->parameters);
1042     if (ret->group == NULL) {
1064     ret->pub_key = EC_POINT_new(ret->group);
1085         if (!EC_POINT_oct2point(ret->group, ret->pub_key,
1092             (ret->group, ret->pub_key, ret->priv_key, NULL, NULL, NULL)) {
1124     if (a == NULL || a->group == NULL || a->priv_key == NULL ||
1141     buf_len = (EC_GROUP_get_degree(a->group) + 7) / 8;
1170              ec_asn1_group2pkparameters(a->group,
1184         tmp_len = EC_POINT_point2oct(a->group, a->pub_key,
1197         if (!EC_POINT_point2oct(a->group, a->pub_key,
1230     return i2d_ECPKParameters(a->group, out);
1250     if (!d2i_ECPKParameters(&ret->group, in, len)) {
1267     if (a == NULL || (*a) == NULL || (*a)->group == NULL) {
1276         (ret->pub_key = EC_POINT_new(ret->group)) == NULL) {
1280     if (!EC_POINT_oct2point(ret->group, ret->pub_key, *in, len, NULL)) {
1300     buf_len = EC_POINT_point2oct(a->group, a->pub_key,
1314     if (!EC_POINT_point2oct(a->group, a->pub_key, a->conv_form,