Merge pull request #1745 from brandonblack/feature/taproot

Taproot

Author: junderw

CHANGELOG.md

@@ -1,3 +1,16 @@
+# 6.0.0
+__removed__
+- bip32: Removed the re-export. Please add as dependency to your app instead.
+- ECPair: Please use bip32 moving forward. ecpair package was created for those who need it.
+- TransactionBuilder: Any internal files used only in TB (classify, templates, etc.) were also removed.
+
+__added__
+- taproot segwit v1 address support (bech32m) via address module (#1676)
+- hashForWitnessV1 method on Transaction class (#1745)
+
+__fixed__
+- Transaction version read/write differed. (#1717)
+
 # 5.2.0
 __changed__
 - Updated PSBT to allow for witnessUtxo and nonWitnessUtxo simultaneously (Re: segwit psbt bug) (#1563)

README.md

@@ -1,8 +1,5 @@
 # BitcoinJS (bitcoinjs-lib)
-[![Build Status](https://travis-ci.org/bitcoinjs/bitcoinjs-lib.png?branch=master)](https://travis-ci.org/bitcoinjs/bitcoinjs-lib)
-[![NPM](https://img.shields.io/npm/v/bitcoinjs-lib.svg)](https://www.npmjs.org/package/bitcoinjs-lib)
-
-[![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
+[![Github CI](https://github.com/bitcoinjs/bitcoinjs-lib/actions/workflows/main_ci.yml/badge.svg)](https://github.com/bitcoinjs/bitcoinjs-lib/actions/workflows/main_ci.yml) [![NPM](https://img.shields.io/npm/v/bitcoinjs-lib.svg)](https://www.npmjs.org/package/bitcoinjs-lib) [![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
 
 A javascript Bitcoin library for node.js and browsers. Written in TypeScript, but committing the JS files to verify.
 
@@ -94,6 +91,8 @@ The below examples are implemented as integration tests, they should be very eas
 Otherwise, pull requests are appreciated.
 Some examples interact (via HTTPS) with a 3rd Party Blockchain Provider (3PBP).
 
+- [Taproot Key Spend](https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/test/integration/taproot.md)
+
 - [Generate a random address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/test/integration/addresses.spec.ts)
 - [Import an address via WIF](https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/test/integration/addresses.spec.ts)
 - [Generate a 2-of-3 P2SH multisig address](https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/test/integration/addresses.spec.ts)

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "bitcoinjs-lib",
-  "version": "5.2.0",
+  "version": "6.0.0",
   "description": "Client-side Bitcoin JavaScript library",
   "main": "./src/index.js",
   "types": "./src/index.d.ts",
@@ -62,7 +62,7 @@
     "@types/bs58check": "^2.1.0",
     "@types/create-hash": "^1.2.2",
     "@types/mocha": "^5.2.7",
-    "@types/node": "^16.11.1",
+    "@types/node": "^16.11.7",
     "@types/proxyquire": "^1.3.28",
     "@types/randombytes": "^2.0.0",
     "@types/wif": "^2.0.2",

package.json

@@ -11,6 +11,7 @@ export declare function cloneBuffer(buffer: Buffer): Buffer;
 export declare class BufferWriter {
     buffer: Buffer;
     offset: number;
+    static withCapacity(size: number): BufferWriter;
     constructor(buffer: Buffer, offset?: number);
     writeUInt8(i: number): void;
     writeInt32(i: number): void;
@@ -20,6 +21,7 @@ export declare class BufferWriter {
     writeSlice(slice: Buffer): void;
     writeVarSlice(slice: Buffer): void;
     writeVector(vector: Buffer[]): void;
+    end(): Buffer;
 }
 /**
  * Helper class for reading of bitcoin data types from a buffer.

src/bufferutils.d.ts

@@ -58,6 +58,9 @@ class BufferWriter {
     this.offset = offset;
     typeforce(types.tuple(types.Buffer, types.UInt32), [buffer, offset]);
   }
+  static withCapacity(size) {
+    return new BufferWriter(Buffer.alloc(size));
+  }
   writeUInt8(i) {
     this.offset = this.buffer.writeUInt8(i, this.offset);
   }
@@ -88,6 +91,12 @@ class BufferWriter {
     this.writeVarInt(vector.length);
     vector.forEach(buf => this.writeVarSlice(buf));
   }
+  end() {
+    if (this.buffer.length === this.offset) {
+      return this.buffer;
+    }
+    throw new Error(`buffer size ${this.buffer.length}, offset ${this.offset}`);
+  }
 }
 exports.BufferWriter = BufferWriter;
 /**

src/bufferutils.js

@@ -4,3 +4,7 @@ export declare function sha1(buffer: Buffer): Buffer;
 export declare function sha256(buffer: Buffer): Buffer;
 export declare function hash160(buffer: Buffer): Buffer;
 export declare function hash256(buffer: Buffer): Buffer;
+declare const TAGS: readonly ["BIP0340/challenge", "BIP0340/aux", "BIP0340/nonce", "TapLeaf", "TapBranch", "TapSighash", "TapTweak", "KeyAgg list", "KeyAgg coefficient"];
+export declare type TaggedHashPrefix = typeof TAGS[number];
+export declare function taggedHash(prefix: TaggedHashPrefix, data: Buffer): Buffer;
+export {};

src/crypto.d.ts

@@ -1,6 +1,6 @@
 'use strict';
 Object.defineProperty(exports, '__esModule', { value: true });
-exports.hash256 = exports.hash160 = exports.sha256 = exports.sha1 = exports.ripemd160 = void 0;
+exports.taggedHash = exports.hash256 = exports.hash160 = exports.sha256 = exports.sha1 = exports.ripemd160 = void 0;
 const createHash = require('create-hash');
 function ripemd160(buffer) {
   try {
@@ -34,3 +34,25 @@ function hash256(buffer) {
   return sha256(sha256(buffer));
 }
 exports.hash256 = hash256;
+const TAGS = [
+  'BIP0340/challenge',
+  'BIP0340/aux',
+  'BIP0340/nonce',
+  'TapLeaf',
+  'TapBranch',
+  'TapSighash',
+  'TapTweak',
+  'KeyAgg list',
+  'KeyAgg coefficient',
+];
+/** An object mapping tags to their tagged hash prefix of [SHA256(tag) | SHA256(tag)] */
+const TAGGED_HASH_PREFIXES = Object.fromEntries(
+  TAGS.map(tag => {
+    const tagHash = sha256(Buffer.from(tag));
+    return [tag, Buffer.concat([tagHash, tagHash])];
+  }),
+);
+function taggedHash(prefix, data) {
+  return sha256(Buffer.concat([TAGGED_HASH_PREFIXES[prefix], data]));
+}
+exports.taggedHash = taggedHash;

src/crypto.js

@@ -5,6 +5,7 @@ import * as payments from './payments';
 import * as script from './script';
 export { address, crypto, networks, payments, script };
 export { Block } from './block';
+export { TaggedHashPrefix } from './crypto';
 export { Psbt, PsbtTxInput, PsbtTxOutput, Signer, SignerAsync, HDSigner, HDSignerAsync, } from './psbt';
 export { OPS as opcodes } from './ops';
 export { Transaction } from './transaction';

src/index.d.ts

@@ -12,10 +12,13 @@ export interface Input {
 }
 export declare class Transaction {
     static readonly DEFAULT_SEQUENCE = 4294967295;
+    static readonly SIGHASH_DEFAULT = 0;
     static readonly SIGHASH_ALL = 1;
     static readonly SIGHASH_NONE = 2;
     static readonly SIGHASH_SINGLE = 3;
     static readonly SIGHASH_ANYONECANPAY = 128;
+    static readonly SIGHASH_OUTPUT_MASK = 3;
+    static readonly SIGHASH_INPUT_MASK = 128;
     static readonly ADVANCED_TRANSACTION_MARKER = 0;
     static readonly ADVANCED_TRANSACTION_FLAG = 1;
     static fromBuffer(buffer: Buffer, _NO_STRICT?: boolean): Transaction;
@@ -42,6 +45,7 @@ export declare class Transaction {
      * This hash can then be used to sign the provided transaction input.
      */
     hashForSignature(inIndex: number, prevOutScript: Buffer, hashType: number): Buffer;
+    hashForWitnessV1(inIndex: number, prevOutScripts: Buffer[], values: number[], hashType: number, leafHash?: Buffer, annex?: Buffer): Buffer;
     hashForWitnessV0(inIndex: number, prevOutScript: Buffer, value: number, hashType: number): Buffer;
     getHash(forWitness?: boolean): Buffer;
     getId(): string;