forked from interlay/interbtc-clients
/
addr.rs
45 lines (36 loc) · 1.4 KB
/
addr.rs
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use bitcoincore_rpc::bitcoin::secp256k1::Scalar;
use crate::{secp256k1::SecretKey, Error};
pub fn calculate_deposit_secret_key(vault_key: SecretKey, issue_key: SecretKey) -> Result<SecretKey, Error> {
let mut deposit_key = vault_key;
deposit_key.mul_assign(&Scalar::from(issue_key))?;
Ok(deposit_key)
}
#[cfg(test)]
mod tests {
use super::*;
use crate::secp256k1;
use rand::{thread_rng, Rng};
use secp256k1::{constants::SECRET_KEY_SIZE, PublicKey, Secp256k1, SecretKey};
use sp_core::H256;
#[test]
fn test_calculate_deposit_secret_key() {
let secp = Secp256k1::new();
// c
let secure_id = H256::random();
let secret_key = SecretKey::from_slice(secure_id.as_bytes()).unwrap();
// v
let raw_secret_key: [u8; SECRET_KEY_SIZE] = thread_rng().gen();
let vault_secret_key = SecretKey::from_slice(&raw_secret_key).unwrap();
// V
let vault_public_key = PublicKey::from_secret_key(&secp, &vault_secret_key);
// D = V * c
let mut deposit_public_key = vault_public_key;
deposit_public_key.mul_assign(&secp, &secret_key[..]).unwrap();
// d = v * c
let deposit_secret_key = calculate_deposit_secret_key(vault_secret_key, secret_key).unwrap();
assert_eq!(
deposit_public_key,
PublicKey::from_secret_key(&secp, &deposit_secret_key)
);
}
}