The design of Curve25519 and its analogs has an extremely limited design space. If there is an engineered weakness in Curve25519 than it is likely that any cur

The design of Curve25519 and its analogs has an extremely limited design space. If there is an engineered weakness in Curve25519 than it is likely that any curve that we could select would be likely to have the same unknown weakness. In the literature this is called "rigid" design.