ootle-rs 0.18.0

A Rust library for interacting with the Tari Ootle network.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71

//   Copyright 2026 The Tari Project
//   SPDX-License-Identifier: BSD-3-Clause

use async_trait::async_trait;
use tari_crypto::ristretto::RistrettoPublicKey;
use tari_ootle_transaction::{Transaction, TransactionSealSignature, UnsealedTransaction, UnsignedTransaction};
use tari_template_lib_types::crypto::RistrettoPublicKeyBytes;

use crate::{signer, types::Address, wallet::TransactionAuthorization};

/// Trait for signing and authorizing transactions with a persistent key.
// NOTE: async_trait is required because returning impl Future is not currently dyn compatible
#[async_trait::async_trait]
pub trait TransactionSigner {
    /// Get the public key bytes of the signer.
    fn address(&self) -> &Address;

    /// Asynchronously sign a transaction message.
    async fn sign_transaction(&self, message: &UnsealedTransaction) -> signer::Result<TransactionSealSignature>;

    async fn sign_authorization(
        &self,
        seal_signer: &RistrettoPublicKeyBytes,
        tx: &UnsignedTransaction,
    ) -> signer::Result<TransactionAuthorization>;
}

/// Trait for applying the final seal signature to a transaction.
///
/// The seal signature is the last signature applied, proving that the transaction
/// originator approved the final set of instructions and authorizations.
#[async_trait]
pub trait TransactionSealSigner: Sync {
    /// The authorizations this signer contributes, produced before the transaction is sealed.
    ///
    /// Each one commits to the public key this signer will seal with, so only the seal signer can produce them —
    /// which is why they are made here rather than by the caller. Defaults to none: a signer that seals with a key
    /// the caller already knows has nothing to add.
    async fn authorizations_for(
        &self,
        _unsigned: &UnsignedTransaction,
    ) -> signer::Result<Vec<TransactionAuthorization>> {
        Ok(Vec::new())
    }

    /// Asynchronously sign (seal) an unsealed transaction.
    async fn seal_transaction(&self, transaction: UnsealedTransaction) -> signer::Result<Transaction>;
}

/// Trait for signing transactions using derived stealth keys for confidential transactions.
#[async_trait]
pub trait TransactionStealthKeySigner {
    /// The one-time public key this signer signs with for `public_nonce`, derived without producing a signature.
    ///
    /// Every authorization signature commits to the seal signer's public key, so when a stealth input seals, its
    /// one-time key must be resolvable before any authorization is made.
    async fn stealth_public_key(&self, public_nonce: &RistrettoPublicKey) -> signer::Result<RistrettoPublicKeyBytes>;

    async fn sign_authorization_with_stealth(
        &self,
        public_nonce: &RistrettoPublicKey,
        seal_signer: &RistrettoPublicKeyBytes,
        tx: &UnsignedTransaction,
    ) -> signer::Result<TransactionAuthorization>;

    async fn seal_transaction_with_stealth(
        &self,
        public_nonce: &RistrettoPublicKey,
        message: &UnsealedTransaction,
    ) -> signer::Result<TransactionSealSignature>;
}