Consider an option to support Elligator as option

[savely-krasovsky]

By using Elligator elliptic curve points became indistinguishable from random string. It's useful property in countries where government censorship evolves. It can be used pretty easily with Curve25519.

http://elligator.cr.yp.to/

[kigawas]

+-------------------------------+----------+----------+-----------------+
| 65 Bytes                      | 16 Bytes | 16 Bytes | == data size    |
+-------------------------------+----------+----------+-----------------+
| sender_pk (elligator)         | nonce    | tag      | encrypted_data  |
+-------------------------------+----------+----------+-----------------+

[kigawas]

def elligatorize(public_key: bytes, curve: Curve) -> bytes:
    pass

Need to implement it first

[kigawas]

https://fc14.ifca.ai/papers/fc14_submission_25.pdf

looks like fancier than elligator :)

[kigawas]

Finally there's an elligator for secp256k1

https://eprint.iacr.org/2022/759.pdf