feat: recover public key (1.2.0)

[enitrat]

In this example, we will demonstrate how to recover the public key from a signature and the signed message hash using recover_public_key_u32.

[HansBhatia]

I'll take this on!

[HansBhatia]

@enitrat do I use the secp256r1 or secp256k1 curve? Also I'm not entirely sure how to import the function. I tried -

use starknet::secp256_trait:: recover_public_key_u32;
use starknet::secp256k1::{Secp256k1Point, Secp256k1PointImpl};

Identifier not found: secp256_trait, Secp256k1Point, Secp256k1PointImpl.

[enitrat]

@HansBhatia I think you will need to upgrade Cairo to v2.x for this one