Change Details

Full end-to-end testing would need to be done in another diff. However, there is a unit test which goes through a register + login workflow. ``` cd shared/comm-opaque cargo test ```

Full end-to-end testing would need to be done in another diff. However, there is a unit test in `lib.rs` which goes through a register + login workflow in rust. ``` cd shared/comm-opaque cargo test ```

Full end-to-end testing would need to be done in another diff. However, there is a unit test in `lib.rs` which goes through a register + login workflow in rust. ``` cd shared/comm-opaque cargo test ```