/* group->field */
if (!BN_copy(&group->field, p)) goto err;
- BN_set_sign(&group->field, 0);
+ BN_set_negative(&group->field, 0);
/* group->a */
if (!BN_nnmod(tmp_a, a, p, ctx)) goto err;
ret = 1;
err:
- BN_CTX_end(ctx);
+ if (ctx != NULL)
+ BN_CTX_end(ctx);
if (new_ctx != NULL)
BN_CTX_free(new_ctx);
return ret;