Module monero::cryptonote::onetime_key

CryptoNote One-Time Keys protocol

Support for CryptoNote one-time keys which the sender derives from random data and the receiver's address. Upon receiving a transaction, user scans all output keys and checks if he can recover the corresponding secret key. He succeeds if and only if that particular output was sent to his address.

Checking output ownership

use std::str::FromStr;
use monero::{PublicKey, PrivateKey};
use monero::cryptonote::onetime_key::SubKeyChecker;
use monero::cryptonote::subaddress::Index;
use monero::util::key::ViewPair;

let view = PrivateKey::from_str("bcfdda53205318e1c14fa0ddca1a45df363bb427972981d0249d0f4652a7df07").unwrap();
let secret_spend = PrivateKey::from_str("e5f4301d32f3bdaef814a835a18aaaa24b13cc76cf01a832a7852faf9322e907").unwrap();
let spend = PublicKey::from_private_key(&secret_spend);

 let viewpair = ViewPair {
     view,
     spend,
 };

let one_time_pk =
    PublicKey::from_str("e3e77faca64b5997ac1f75763e87713d03d9e2896edec65843ffd2970ef1dde6")
        .unwrap();

let tx_pubkey =
    PublicKey::from_str("5d1402db663eda8cef4f6782b66321e4a990f746aca249c973e098ba2c0837c1")
        .unwrap();

let checker = SubKeyChecker::new(&viewpair, 0..3, 0..3);

assert_eq!(
    Some(&Index { major: 0, minor: 0 }),
    checker.check(1, &one_time_pk, &tx_pubkey)
);

Structs

KeyGenerator	Helper to generate One-Time Public keys (ephemeral keys) in transactions
KeyRecoverer	Helper to compute One-Time private keys
SubKeyChecker	Helper to check if a One-time sub address public key is related to a view pair

Constants

MONERO_MUL_FACTOR

Special factor used in all vR and rV multiplications