int ec_GFp_mont_group_copy(EC_GROUP *dest, const EC_GROUP *src) { if (dest->field_data1 != NULL) { BN_MONT_CTX_free(dest->field_data1); dest->field_data1 = NULL; } if (dest->field_data2 != NULL) { BN_clear_free(dest->field_data2); dest->field_data2 = NULL; } if (!ec_GFp_simple_group_copy(dest, src)) return 0; if (src->field_data1 != NULL) { dest->field_data1 = BN_MONT_CTX_new(); if (dest->field_data1 == NULL) return 0; if (!BN_MONT_CTX_copy(dest->field_data1, src->field_data1)) goto err; } if (src->field_data2 != NULL) { dest->field_data2 = BN_dup(src->field_data2); if (dest->field_data2 == NULL) goto err; } return 1; err: if (dest->field_data1 != NULL) { BN_MONT_CTX_free(dest->field_data1); dest->field_data1 = NULL; } return 0; }
int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) { EC_EXTRA_DATA *d; if (dest->meth->group_copy == 0) { ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); return 0; } if (dest->meth != src->meth) { ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); return 0; } if (dest == src) return 1; EC_EX_DATA_free_all_data(&dest->extra_data); for (d = src->extra_data; d != NULL; d = d->next) { void *t = d->dup_func(d->data); if (t == NULL) return 0; if (!EC_EX_DATA_set_data (&dest->extra_data, t, d->dup_func, d->free_func, d->clear_free_func)) return 0; } if (EC_GROUP_VERSION(src) && src->mont_data != NULL) { if (dest->mont_data == NULL) { dest->mont_data = BN_MONT_CTX_new(); if (dest->mont_data == NULL) return 0; } if (!BN_MONT_CTX_copy(dest->mont_data, src->mont_data)) return 0; } else { /* src->generator == NULL */ if (EC_GROUP_VERSION(dest) && dest->mont_data != NULL) { BN_MONT_CTX_free(dest->mont_data); dest->mont_data = NULL; } } if (src->generator != NULL) { if (dest->generator == NULL) { dest->generator = EC_POINT_new(dest); if (dest->generator == NULL) return 0; } if (!EC_POINT_copy(dest->generator, src->generator)) return 0; } else { /* src->generator == NULL */ if (dest->generator != NULL) { EC_POINT_clear_free(dest->generator); dest->generator = NULL; } } if (!BN_copy(&dest->order, &src->order)) return 0; if (!BN_copy(&dest->cofactor, &src->cofactor)) return 0; dest->curve_name = src->curve_name; dest->asn1_flag = src->asn1_flag; dest->asn1_form = src->asn1_form; if (src->seed) { if (dest->seed) OPENSSL_free(dest->seed); dest->seed = OPENSSL_malloc(src->seed_len); if (dest->seed == NULL) return 0; if (!memcpy(dest->seed, src->seed, src->seed_len)) return 0; dest->seed_len = src->seed_len; } else { if (dest->seed) OPENSSL_free(dest->seed); dest->seed = NULL; dest->seed_len = 0; } return dest->meth->group_copy(dest, src); }
int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) { if (dest->meth->group_copy == 0) { ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); return 0; } if (dest->meth != src->meth) { ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); return 0; } if (dest == src) return 1; /* Copy precomputed */ dest->pre_comp_type = src->pre_comp_type; switch (src->pre_comp_type) { case PCT_none: dest->pre_comp.ec = NULL; break; case PCT_nistz256: #ifdef ECP_NISTZ256_ASM dest->pre_comp.nistz256 = EC_nistz256_pre_comp_dup(src->pre_comp.nistz256); #endif break; #ifndef OPENSSL_NO_EC_NISTP_64_GCC_128 case PCT_nistp224: dest->pre_comp.nistp224 = EC_nistp224_pre_comp_dup(src->pre_comp.nistp224); break; case PCT_nistp256: dest->pre_comp.nistp256 = EC_nistp256_pre_comp_dup(src->pre_comp.nistp256); break; case PCT_nistp521: dest->pre_comp.nistp521 = EC_nistp521_pre_comp_dup(src->pre_comp.nistp521); break; #else case PCT_nistp224: case PCT_nistp256: case PCT_nistp521: break; #endif case PCT_ec: dest->pre_comp.ec = EC_ec_pre_comp_dup(src->pre_comp.ec); break; } if (src->mont_data != NULL) { if (dest->mont_data == NULL) { dest->mont_data = BN_MONT_CTX_new(); if (dest->mont_data == NULL) return 0; } if (!BN_MONT_CTX_copy(dest->mont_data, src->mont_data)) return 0; } else { /* src->generator == NULL */ BN_MONT_CTX_free(dest->mont_data); dest->mont_data = NULL; } if (src->generator != NULL) { if (dest->generator == NULL) { dest->generator = EC_POINT_new(dest); if (dest->generator == NULL) return 0; } if (!EC_POINT_copy(dest->generator, src->generator)) return 0; } else { /* src->generator == NULL */ EC_POINT_clear_free(dest->generator); dest->generator = NULL; } if ((src->meth->flags & EC_FLAGS_CUSTOM_CURVE) == 0) { if (!BN_copy(dest->order, src->order)) return 0; if (!BN_copy(dest->cofactor, src->cofactor)) return 0; } dest->curve_name = src->curve_name; dest->asn1_flag = src->asn1_flag; dest->asn1_form = src->asn1_form; if (src->seed) { OPENSSL_free(dest->seed); dest->seed = OPENSSL_malloc(src->seed_len); if (dest->seed == NULL) return 0; if (!memcpy(dest->seed, src->seed, src->seed_len)) return 0; dest->seed_len = src->seed_len; } else { OPENSSL_free(dest->seed); dest->seed = NULL; dest->seed_len = 0; } return dest->meth->group_copy(dest, src); }