dbc/opret/
tx.rs

1// Deterministic bitcoin commitments library.
2//
3// SPDX-License-Identifier: Apache-2.0
4//
5// Written in 2019-2024 by
6//     Dr Maxim Orlovsky <orlovsky@lnp-bp.org>
7//
8// Copyright (C) 2019-2024 LNP/BP Standards Association. All rights reserved.
9//
10// Licensed under the Apache License, Version 2.0 (the "License");
11// you may not use this file except in compliance with the License.
12// You may obtain a copy of the License at
13//
14//     http://www.apache.org/licenses/LICENSE-2.0
15//
16// Unless required by applicable law or agreed to in writing, software
17// distributed under the License is distributed on an "AS IS" BASIS,
18// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19// See the License for the specific language governing permissions and
20// limitations under the License.
21
22use bc::Tx;
23use commit_verify::mpc::Commitment;
24use commit_verify::{EmbedCommitProof, EmbedCommitVerify, EmbedVerifyError};
25
26use super::{OpretError, OpretFirst, OpretProof};
27
28impl EmbedCommitProof<Commitment, Tx, OpretFirst> for OpretProof {
29    fn restore_original_container(
30        &self,
31        commit_container: &Tx,
32    ) -> Result<Tx, EmbedVerifyError<OpretError>> {
33        let mut tx = commit_container.clone();
34        for txout in &mut tx.outputs {
35            if txout.script_pubkey.is_op_return() {
36                *txout = self.restore_original_container(txout)?;
37                return Ok(tx);
38            }
39        }
40        Err(OpretError::NoOpretOutput.into())
41    }
42}
43
44impl EmbedCommitVerify<Commitment, OpretFirst> for Tx {
45    type Proof = OpretProof;
46    type CommitError = OpretError;
47
48    fn embed_commit(&mut self, msg: &Commitment) -> Result<Self::Proof, Self::CommitError> {
49        for txout in &mut self.outputs {
50            if txout.script_pubkey.is_op_return() {
51                return txout.script_pubkey.embed_commit(msg);
52            }
53        }
54        Err(OpretError::NoOpretOutput)
55    }
56}
dbc/opret/tx.rs

dbc/opret/
tx.rs
