rust ecies stuff

gistfile1.txt

/*
[package]
name = "rust"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
secp256k1 = "0.20"
hex = "0.4"
ecies = {version = "0.2", features = ["std"]}
*/

use ecies::{decrypt, encrypt};
use secp256k1::{PublicKey, SecretKey, Secp256k1};
use hex;

fn main() {
    const MSG: &str = "helloworldAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB";
    let private_key_str = "0000000000000000000000000000000000000000000000000000000000000001";
    let secret_bytes = hex::decode(private_key_str).expect("Failed to decode hex string");
    let secp = Secp256k1::new();
    let sk = SecretKey::from_slice(&secret_bytes).expect("Failed to create SecretKey");
    let pk = PublicKey::from_secret_key(&secp, &sk);

    let sk_bytes = &sk[..];
    let pk_bytes = &pk.serialize_uncompressed();

    let msg = MSG.as_bytes();
    let encrypted = encrypt(pk_bytes, msg).unwrap();

    println!("PublicKey: {}\n", hex::encode(pk_bytes));
    println!("encrypted: {}\n", hex::encode(encrypted.clone()));

    let binding = decrypt(sk_bytes, &encrypted).unwrap();
    let dec_str = std::str::from_utf8(&binding).expect("Failed to convert decrypted data to UTF-8 string");
    println!("decrypted: {}\n", dec_str);
}