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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| // Bitcoin protocol single-use-seals library. | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // | ||
| // Written in 2019-2024 by | ||
| // Dr Maxim Orlovsky <[email protected]> | ||
| // | ||
| // Copyright (C) 2019-2024 LNP/BP Standards Association. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| //! Witness-output enabled TxO-seals allow constructing graphs of seals, useful in protocols like | ||
| //! RGB. | ||
| use amplify::Bytes; | ||
| use bc::{Outpoint, Vout}; | ||
| use commit_verify::{DigestExt, Sha256, StrictHash}; | ||
| use strict_encoding::StrictSum; | ||
|
|
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| use crate::{Noise, TxoSealExt}; | ||
|
|
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| #[derive(Copy, Clone, Ord, PartialOrd, Eq, PartialEq, Hash, Debug, Display)] | ||
| #[derive(StrictType, StrictDumb, StrictEncode, StrictDecode)] | ||
| #[strict_type(lib = dbc::LIB_NAME_BPCORE, tags = custom, dumb = Self::Wout(strict_dumb!()))] | ||
| #[cfg_attr(feature = "serde", derive(Serialize, Deserialize), serde(untagged))] | ||
| pub enum WOutpoint { | ||
| #[display("~:{0}")] | ||
| #[strict_type(tag = 0)] | ||
| Wout(Vout), | ||
|
|
||
| #[display(inner)] | ||
| #[strict_type(tag = 1)] | ||
| Extern(Outpoint), | ||
| } | ||
|
|
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| #[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Display)] | ||
| #[display("{primary}/{secondary}")] | ||
| #[derive(StrictType, StrictDumb, StrictEncode, StrictDecode)] | ||
| #[strict_type(lib = dbc::LIB_NAME_BPCORE)] | ||
| #[derive(CommitEncode)] | ||
| #[commit_encode(strategy = strict, id = StrictHash)] | ||
| #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))] | ||
| pub struct WTxoSeal { | ||
| pub primary: WOutpoint, | ||
| pub secondary: TxoSealExt, | ||
| } | ||
|
|
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| impl WTxoSeal { | ||
| /// Creates a new witness output-based seal definition without fallback. | ||
| /// | ||
| /// # Arguments | ||
| /// | ||
| /// `nonce` is a deterministic incremental number, preventing from creating the same seal if the | ||
| /// same output is used. | ||
| pub fn vout_no_fallback(vout: Vout, noise_engine: Sha256, nonce: u64) -> Self { | ||
| Self::with(WOutpoint::Wout(vout), noise_engine, nonce) | ||
| } | ||
|
|
||
| /// Creates a new witness output-based seal definition without fallback. | ||
| /// | ||
| /// # Arguments | ||
| /// | ||
| /// `nonce` is a deterministic incremental number, preventing from creating the same seal if the | ||
| /// same output is used. | ||
| pub fn no_fallback(outpoint: Outpoint, noise_engine: Sha256, nonce: u64) -> Self { | ||
| Self::with(WOutpoint::Extern(outpoint), noise_engine, nonce) | ||
| } | ||
|
|
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| pub fn with(outpoint: WOutpoint, mut noise_engine: Sha256, nonce: u64) -> Self { | ||
| noise_engine.input_raw(&nonce.to_be_bytes()); | ||
| match outpoint { | ||
| WOutpoint::Wout(wout) => { | ||
| noise_engine.input_raw(&[WOutpoint::ALL_VARIANTS[0].0]); | ||
| noise_engine.input_raw(&wout.to_u32().to_be_bytes()); | ||
| } | ||
| WOutpoint::Extern(outpoint) => { | ||
| noise_engine.input_raw(&[WOutpoint::ALL_VARIANTS[1].0]); | ||
| noise_engine.input_raw(outpoint.txid.as_ref()); | ||
| noise_engine.input_raw(&outpoint.vout.to_u32().to_be_bytes()); | ||
| } | ||
| } | ||
| let mut noise = [0xFFu8; 40]; | ||
| noise[..32].copy_from_slice(&noise_engine.finish()); | ||
| Self { | ||
| primary: outpoint, | ||
| secondary: TxoSealExt::Noise(Noise::from(Bytes::from(noise))), | ||
| } | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -26,15 +26,15 @@ use bc::stl::{bp_consensus_stl, bp_tx_stl}; | |
| use bp::stl::bp_core_stl; | ||
| use commit_verify::stl::commit_verify_stl; | ||
| use commit_verify::CommitmentLayout; | ||
| use seals::WTxoSeal; | ||
| use strict_encoding::libname; | ||
| use strict_types::stl::std_stl; | ||
| use strict_types::{parse_args, SystemBuilder}; | ||
|
|
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| fn main() { | ||
| let (format, dir) = parse_args(); | ||
|
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| let mut lib = bp_tx_stl(); | ||
| lib.name = libname!("Tx"); | ||
| lib.serialize( | ||
| format, | ||
|
|
@@ -103,7 +103,7 @@ fn main() { | |
| writeln!( | ||
| file, | ||
| "{{- | ||
| Description: Bitcoin WTxO blind seals | ||
| Author: Dr Maxim Orlovsky <[email protected]> | ||
| Copyright (C) 2024 LNP/BP Standards Association. All rights reserved. | ||
| License: Apache-2.0 | ||
|
|
@@ -113,9 +113,9 @@ Seals vesper lexicon=types+commitments | |
| " | ||
| ) | ||
| .unwrap(); | ||
| let layout = WTxoSeal::commitment_layout(); | ||
| writeln!(file, "{layout}").unwrap(); | ||
| let tt = sys.type_tree("BPCore.WTxoSeal").unwrap(); | ||
| writeln!(file, "{tt}").unwrap(); | ||
|
|
||
| let tt = sys.type_tree("BPCore.Anchor").unwrap(); | ||
|
|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,5 @@ | ||
| {- | ||
| Description: Bitcoin WTxO blind seals | ||
| Author: Dr Maxim Orlovsky <[email protected]> | ||
| Copyright (C) 2024 LNP/BP Standards Association. All rights reserved. | ||
| License: Apache-2.0 | ||
|
|
@@ -8,12 +8,14 @@ | |
| Seals vesper lexicon=types+commitments | ||
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| commitment StrictHash, hasher SHA256, tagged urn:ubideco:strict-types:value-hash#2024-02-10 | ||
| serialized WTxoSeal | ||
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| rec WTxoSeal | ||
| union primary, WOutpoint | ||
| is wout, U32, wrapped, aka Vout, tag 0 | ||
| rec extern, Outpoint, wrapped, tag 1 | ||
| bytes txid, len 32, aka Txid | ||
| is vout, U32, aka Vout | ||
| union secondary, TxoSealExt | ||
| bytes noise, len 40, wrapped, aka Noise, tag 0 | ||
| rec fallback, Outpoint, wrapped, tag 1 | ||
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