mirror of
https://github.com/kccleoc/seedpgp-web.git
synced 2026-03-06 17:37:51 +08:00
feat(blender): add Seed Blender feature
Implements a new 'Seed Blender' feature that allows users to securely combine multiple BIP39 mnemonics and enhance them with dice roll entropy. - Adds a new 'Seed Blender' tab to the main UI. - Implements a multi-step workflow for inputting mnemonics (manual/QR) and dice rolls. - Provides live validation and previews for blended seeds and dice-only entropy. - Includes statistical analysis of dice rolls (chi-square, distribution) and pattern detection for quality assessment. - The core logic is a 1-to-1 port of the reference Python implementation, using the Web Crypto API for browser compatibility and Node.js for testing. - A full suite of unit tests ported from the reference implementation ensures correctness and deterministic outputs.
This commit is contained in:
LC mac
@@ -22,6 +22,7 @@ import Header from './components/Header';
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import { StorageDetails } from './components/StorageDetails';
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import { ClipboardDetails } from './components/ClipboardDetails';
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import Footer from './components/Footer';
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import { SeedBlender } from './components/SeedBlender';
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console.log("OpenPGP.js version:", openpgp.config.versionString);
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@@ -39,11 +40,12 @@ interface ClipboardEvent {
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}
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function App() {
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const [activeTab, setActiveTab] = useState<'backup' | 'restore'>('backup');
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const [activeTab, setActiveTab] = useState<'backup' | 'restore' | 'seedblender'>('backup');
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const [mnemonic, setMnemonic] = useState('');
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const [backupMessagePassword, setBackupMessagePassword] = useState('');
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const [restoreMessagePassword, setRestoreMessagePassword] = useState('');
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const [publicKeyInput, setPublicKeyInput] = useState('');
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const [privateKeyInput, setPrivateKeyInput] = useState('');
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const [privateKeyPassphrase, setPrivateKeyPassphrase] = useState('');
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@@ -418,7 +420,7 @@ function App() {
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readOnly={isReadOnly}
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/>
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</>
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) : (
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) : activeTab === 'restore' ? (
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<>
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<div className="flex gap-2">
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<button
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@@ -475,6 +477,8 @@ function App() {
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</div>
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)}
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</>
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) : (
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<SeedBlender />
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)}
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</div>
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2048
src/bip39_wordlist.txt
Normal file
2048
src/bip39_wordlist.txt
Normal file
File diff suppressed because it is too large
Load Diff
@@ -25,8 +25,8 @@ interface HeaderProps {
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sessionItems: StorageItem[];
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events: ClipboardEvent[];
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onOpenClipboardModal: () => void;
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activeTab: 'backup' | 'restore';
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setActiveTab: (tab: 'backup' | 'restore') => void;
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activeTab: 'backup' | 'restore' | 'seedblender';
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setActiveTab: (tab: 'backup' | 'restore' | 'seedblender') => void;
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encryptedMnemonicCache: any;
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handleLockAndClear: () => void;
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appVersion: string;
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@@ -101,6 +101,12 @@ const Header: React.FC<HeaderProps> = ({
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>
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Restore
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</button>
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<button
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className={`px-4 py-2 rounded-lg ${activeTab === 'seedblender' ? 'bg-teal-500 hover:bg-teal-600' : 'bg-slate-700 hover:bg-slate-600'}`}
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onClick={() => setActiveTab('seedblender')}
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>
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Seed Blender
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</button>
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</div>
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</div>
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337
src/components/SeedBlender.tsx
Normal file
337
src/components/SeedBlender.tsx
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@@ -0,0 +1,337 @@
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/**
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* @file SeedBlender.tsx
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* @summary Main component for the Seed Blending feature.
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*/
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import { useState, useEffect } from 'react';
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import { QrCode, X, Plus, CheckCircle2, AlertTriangle } from 'lucide-react';
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import QRScanner from './QRScanner';
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import { blendMnemonicsAsync, checkXorStrength, mnemonicToEntropy } from '../lib/seedblend';
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// A simple debounce function
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function debounce<F extends (...args: any[]) => any>(func: F, waitFor: number) {
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let timeout: ReturnType<typeof setTimeout> | null = null;
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return (...args: Parameters<F>): Promise<ReturnType<F>> =>
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new Promise(resolve => {
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if (timeout) {
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clearTimeout(timeout);
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}
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timeout = setTimeout(() => resolve(func(...args)), waitFor);
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});
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}
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export function SeedBlender() {
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const [mnemonics, setMnemonics] = useState<string[]>(['']);
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const [validity, setValidity] = useState<Array<boolean | null>>([null]);
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const [showQRScanner, setShowQRScanner] = useState(false);
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const [scanTargetIndex, setScanTargetIndex] = useState<number | null>(null);
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// State for Step 2
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const [blendedResult, setBlendedResult] = useState<{ blendedMnemonic12: string; blendedMnemonic24?: string; } | null>(null);
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const [xorStrength, setXorStrength] = useState<{ isWeak: boolean; uniqueBytes: number; } | null>(null);
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const [blendError, setBlendError] = useState<string>('');
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const [blending, setBlending] = useState(false);
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// Effect to validate and blend mnemonics
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useEffect(() => {
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const processMnemonics = async () => {
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setBlending(true);
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setBlendError('');
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const filledMnemonics = mnemonics.map(m => m.trim()).filter(m => m.length > 0);
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if (filledMnemonics.length === 0) {
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setBlendedResult(null);
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setXorStrength(null);
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setValidity(mnemonics.map(() => null));
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setBlending(false);
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return;
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}
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const newValidity: Array<boolean | null> = [...mnemonics].fill(null);
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const validMnemonics: string[] = [];
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await Promise.all(mnemonics.map(async (mnemonic, index) => {
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if (mnemonic.trim()) {
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try {
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await mnemonicToEntropy(mnemonic.trim());
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newValidity[index] = true;
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validMnemonics.push(mnemonic.trim());
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} catch (e) {
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newValidity[index] = false;
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}
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}
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}));
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setValidity(newValidity);
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if (validMnemonics.length > 0) {
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try {
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const result = await blendMnemonicsAsync(validMnemonics);
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const strength = checkXorStrength(result.blendedEntropy);
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setBlendedResult(result);
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setXorStrength(strength);
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} catch (e: any) {
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setBlendError(e.message);
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setBlendedResult(null);
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setXorStrength(null);
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}
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} else {
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setBlendedResult(null);
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setXorStrength(null);
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}
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setBlending(false);
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};
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// Debounce the processing to avoid running on every keystroke
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const debouncedProcess = debounce(processMnemonics, 300);
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debouncedProcess();
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}, [mnemonics]);
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const handleAddMnemonic = () => {
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setMnemonics([...mnemonics, '']);
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setValidity([...validity, null]);
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};
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const handleMnemonicChange = (index: number, value: string) => {
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const newMnemonics = [...mnemonics];
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newMnemonics[index] = value;
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setMnemonics(newMnemonics);
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};
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const handleRemoveMnemonic = (index: number) => {
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if (mnemonics.length > 1) {
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const newMnemonics = mnemonics.filter((_, i) => i !== index);
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const newValidity = validity.filter((_, i) => i !== index);
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setMnemonics(newMnemonics);
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setValidity(newValidity);
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} else {
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setMnemonics(['']);
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setValidity([null]);
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}
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};
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const handleScan = (index: number) => {
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setScanTargetIndex(index);
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setShowQRScanner(true);
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};
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const handleScanSuccess = (scannedText: string) => {
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if (scanTargetIndex !== null) {
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handleMnemonicChange(scanTargetIndex, scannedText);
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}
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setShowQRScanner(false);
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setScanTargetIndex(null);
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};
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const getBorderColor = (isValid: boolean | null) => {
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if (isValid === true) return 'border-green-500 focus:ring-green-500';
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if (isValid === false) return 'border-red-500 focus:ring-red-500';
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return 'border-slate-200 focus:ring-teal-500';
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}
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return (
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<>
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<div className="space-y-6">
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{/* Header */}
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<div className="flex items-center justify-between">
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<h2 className="text-2xl font-bold text-slate-100">Seed Blender</h2>
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</div>
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{/* Step 1: Input Mnemonics */}
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<div className="p-6 bg-slate-700/50 rounded-xl border border-slate-600">
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<h3 className="font-semibold text-lg mb-4 text-slate-200">Step 1: Input Mnemonics</h3>
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<div className="space-y-4">
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{mnemonics.map((mnemonic, index) => (
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<div key={index} className="flex flex-col sm:flex-row items-start gap-2">
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<div className="relative w-full">
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<textarea
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value={mnemonic}
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onChange={(e) => handleMnemonicChange(index, e.target.value)}
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placeholder={`Mnemonic #${index + 1} (12 or 24 words)`}
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className={`w-full h-28 sm:h-24 p-3 pr-10 bg-slate-50 border-2 rounded-lg text-sm font-mono text-slate-900 placeholder:text-slate-400 focus:outline-none transition-all resize-none ${getBorderColor(validity[index])}`}
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data-sensitive={`Mnemonic #${index + 1}`}
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/>
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{validity[index] === true && <CheckCircle2 className="absolute top-3 right-3 text-green-500" />}
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{validity[index] === false && <AlertTriangle className="absolute top-3 right-3 text-red-500" />}
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</div>
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<div className="flex items-center gap-2 shrink-0">
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<button
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onClick={() => handleScan(index)}
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className="p-3 h-full bg-purple-600/20 text-purple-300 hover:bg-purple-600/50 hover:text-white rounded-md transition-colors flex items-center justify-center"
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aria-label="Scan QR Code"
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>
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<QrCode size={20} />
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</button>
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<button
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onClick={() => handleRemoveMnemonic(index)}
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className="p-3 h-full bg-red-600/20 text-red-400 hover:bg-red-600/50 hover:text-white rounded-md transition-colors flex items-center justify-center"
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aria-label="Remove Mnemonic"
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>
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<X size={20} />
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</button>
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</div>
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</div>
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))}
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<button
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onClick={handleAddMnemonic}
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className="w-full py-2.5 bg-slate-600/70 hover:bg-slate-600 rounded-lg font-semibold flex items-center justify-center gap-2 transition-colors"
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>
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<Plus size={16} /> Add Another Mnemonic
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</button>
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</div>
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</div>
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{/* Step 2: Blended Preview */}
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<div className="p-6 bg-slate-700/50 rounded-xl border border-slate-600 min-h-[10rem]">
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<h3 className="font-semibold text-lg mb-4 text-slate-200">Step 2: Blended Preview</h3>
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{blending && <p className="text-sm text-slate-400">Blending...</p>}
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{blendError && <p className="text-sm text-red-400">{blendError}</p>}
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{!blending && !blendError && blendedResult && (
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<div className="space-y-4 animate-in fade-in">
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{xorStrength?.isWeak && (
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<div className="p-3 bg-amber-500/10 border border-amber-500/30 text-amber-300 rounded-lg text-sm flex gap-3">
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<AlertTriangle />
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<div>
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<span className="font-bold">Weak XOR Result:</span> Detected only {xorStrength.uniqueBytes} unique bytes. This can happen if seeds are identical or too similar.
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</div>
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</div>
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)}
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<div className="space-y-1">
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<label className="text-xs font-semibold text-slate-400">Blended Mnemonic (12-word)</label>
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<p className="p-3 bg-slate-800 rounded-md font-mono text-sm text-slate-100 break-words">
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{blendedResult.blendedMnemonic12}
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</p>
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</div>
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{blendedResult.blendedMnemonic24 && (
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<div className="space-y-1">
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<label className="text-xs font-semibold text-slate-400">Blended Mnemonic (24-word)</label>
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<p className="p-3 bg-slate-800 rounded-md font-mono text-sm text-slate-100 break-words">
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{blendedResult.blendedMnemonic24}
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</p>
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</div>
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)}
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</div>
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)}
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{!blending && !blendError && !blendedResult && (
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<p className="text-sm text-slate-400">Previews will appear here once you enter one or more valid mnemonics.</p>
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)}
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</div>
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{/* Step 3: Input Dice Rolls */}
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<div className="p-6 bg-slate-700/50 rounded-xl border border-slate-600">
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<h3 className="font-semibold text-lg mb-4 text-slate-200">Step 3: Input Dice Rolls</h3>
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<div className="space-y-4">
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<textarea
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value={diceRolls}
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onChange={(e) => setDiceRolls(e.target.value.replace(/[^1-6]/g, ''))}
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placeholder="Enter 99+ dice rolls (e.g., 16345...)"
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className="w-full h-32 p-3 bg-slate-50 border-2 border-slate-200 rounded-lg text-lg font-mono text-slate-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-teal-500 transition-all resize-none"
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/>
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{dicePatternWarning && (
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<div className="p-3 bg-amber-500/10 border border-amber-500/30 text-amber-300 rounded-lg text-sm flex gap-3">
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<AlertTriangle />
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<p><span className="font-bold">Warning:</span> {dicePatternWarning}</p>
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</div>
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)}
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{diceStats && diceStats.length > 0 && (
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<div className="grid grid-cols-2 md:grid-cols-4 gap-4 text-center">
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<div className="p-3 bg-slate-800 rounded-lg">
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<p className="text-xs text-slate-400">Rolls</p>
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<p className="text-lg font-bold">{diceStats.length}</p>
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</div>
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<div className="p-3 bg-slate-800 rounded-lg">
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<p className="text-xs text-slate-400">Entropy (bits)</p>
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<p className="text-lg font-bold">{diceStats.estimatedEntropyBits.toFixed(1)}</p>
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</div>
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<div className="p-3 bg-slate-800 rounded-lg">
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<p className="text-xs text-slate-400">Mean</p>
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<p className="text-lg font-bold">{diceStats.mean.toFixed(2)}</p>
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</div>
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<div className="p-3 bg-slate-800 rounded-lg">
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<p className="text-xs text-slate-400">Chi-Square</p>
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<p className={`text-lg font-bold ${diceStats.chiSquare > 11.07 ? 'text-amber-400' : ''}`}>{diceStats.chiSquare.toFixed(2)}</p>
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</div>
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</div>
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)}
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{diceOnlyMnemonic && (
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<div className="space-y-1 pt-2">
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<label className="text-xs font-semibold text-slate-400">Dice-Only Preview Mnemonic</label>
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<p className="p-3 bg-slate-800 rounded-md font-mono text-sm text-slate-100 break-words">
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{diceOnlyMnemonic}
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</p>
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</div>
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)}
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</div>
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</div>
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{/* Step 4: Final Mnemonic */}
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<div className="p-6 bg-slate-900/70 rounded-xl border-2 border-teal-500/50 shadow-lg">
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<h3 className="font-semibold text-lg mb-4 text-slate-200">Step 4: Generate Final Mnemonic</h3>
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{!finalMnemonic ? (
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<>
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<p className="text-sm text-slate-400 mb-4">
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Once you have entered valid mnemonics and at least 50 dice rolls, you can generate the final, hardened mnemonic.
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</p>
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<button
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onClick={handleFinalMix}
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disabled={!blendedResult || !diceRolls || diceRolls.length < 50 || mixing}
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className="w-full py-3 bg-gradient-to-r from-teal-500 to-cyan-600 text-white rounded-xl font-bold flex items-center justify-center gap-2 hover:from-teal-600 hover:to-cyan-700 transition-all shadow-lg disabled:opacity-50 disabled:cursor-not-allowed"
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>
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{mixing ? (
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<RefreshCw className="animate-spin" size={20} />
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) : (
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<Sparkles size={20} />
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)}
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{mixing ? 'Generating...' : 'Mix Mnemonic + Dice'}
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</button>
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</>
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) : (
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<div className="p-4 bg-gradient-to-br from-green-50 to-emerald-50 border-2 border-green-300 rounded-2xl shadow-lg animate-in zoom-in-95">
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<div className="flex items-center justify-between mb-4">
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<span className="font-bold text-green-700 flex items-center gap-2 text-lg">
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<CheckCircle2 size={22} /> Final Mnemonic Generated
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</span>
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<button
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onClick={handleClearFinal}
|
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className="p-2.5 hover:bg-green-100 rounded-xl transition-all text-green-700 hover:shadow"
|
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>
|
||||
<EyeOff size={22} /> Hide & Clear
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</button>
|
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</div>
|
||||
|
||||
<div className="p-6 bg-white rounded-xl border-2 border-green-200 shadow-sm">
|
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<p className="font-mono text-center text-lg text-slate-800 tracking-wide leading-relaxed break-words">
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{finalMnemonic}
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</p>
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</div>
|
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<div className="mt-4 p-3 bg-red-500/10 text-red-300 rounded-lg text-xs flex gap-2">
|
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<AlertTriangle size={16} className="shrink-0 mt-0.5" />
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<span>
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<strong>Security Warning:</strong> Write this mnemonic down immediately on paper or metal. Do not save it digitally. Clear when done.
|
||||
</span>
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</div>
|
||||
</div>
|
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)}
|
||||
</div>
|
||||
</div>
|
||||
|
||||
{/* QR Scanner Modal */}
|
||||
{showQRScanner && (
|
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<QRScanner
|
||||
onScanSuccess={handleScanSuccess}
|
||||
onClose={() => setShowQRScanner(false)}
|
||||
/>
|
||||
)}
|
||||
</>
|
||||
);
|
||||
}
|
||||
154
src/lib/seedblend.test.ts
Normal file
154
src/lib/seedblend.test.ts
Normal file
@@ -0,0 +1,154 @@
|
||||
/**
|
||||
* @file Unit tests for the seedblend library.
|
||||
* @summary These tests are a direct port of the unit tests from the
|
||||
* 'dice_mix_interactive.py' script. Their purpose is to verify that the
|
||||
* TypeScript/Web Crypto implementation is 100% logic-compliant with the
|
||||
* Python reference script, producing identical, deterministic outputs for
|
||||
* the same inputs.
|
||||
*/
|
||||
|
||||
import { describe, it, expect } from 'vitest';
|
||||
import {
|
||||
xorBytes,
|
||||
hkdfExtractExpand,
|
||||
mnemonicToEntropy,
|
||||
entropyToMnemonic,
|
||||
blendMnemonicsAsync,
|
||||
mixWithDiceAsync,
|
||||
diceToBytes,
|
||||
detectBadPatterns,
|
||||
calculateDiceStats,
|
||||
} from './seedblend';
|
||||
|
||||
// Helper to convert hex strings to Uint8Array
|
||||
const fromHex = (hex: string) => new Uint8Array(hex.match(/.{1,2}/g)!.map(byte => parseInt(byte, 16)));
|
||||
|
||||
describe('SeedBlend Logic Compliance Tests (Ported from Python)', () => {
|
||||
|
||||
it('should ensure XOR blending is order-independent (commutative)', () => {
|
||||
const ent1 = fromHex("a1".repeat(16));
|
||||
const ent2 = fromHex("b2".repeat(16));
|
||||
const ent3 = fromHex("c3".repeat(16));
|
||||
|
||||
const blended1 = xorBytes(xorBytes(ent1, ent2), ent3);
|
||||
const blended2 = xorBytes(xorBytes(ent3, ent2), ent1);
|
||||
|
||||
expect(blended1).toEqual(blended2);
|
||||
});
|
||||
|
||||
it('should handle XOR of different length inputs correctly', () => {
|
||||
const ent128 = fromHex("a1".repeat(16)); // 12-word seed
|
||||
const ent256 = fromHex("b2".repeat(32)); // 24-word seed
|
||||
|
||||
const blended = xorBytes(ent128, ent256);
|
||||
expect(blended.length).toBe(32);
|
||||
|
||||
// Verify cycling: first 16 bytes should be a1^b2, last 16 should also be a1^b2
|
||||
const expectedChunk = fromHex("a1b2".repeat(8));
|
||||
expect(blended.slice(0, 16)).toEqual(xorBytes(fromHex("a1".repeat(16)), fromHex("b2".repeat(16))));
|
||||
expect(blended.slice(16, 32)).toEqual(xorBytes(fromHex("a1".repeat(16)), fromHex("b2".repeat(16))));
|
||||
});
|
||||
|
||||
it('should perform a basic round-trip and validation for mnemonics', async () => {
|
||||
const valid12 = "army van defense carry jealous true garbage claim echo media make crunch";
|
||||
const ent12 = await mnemonicToEntropy(valid12);
|
||||
expect(ent12.length).toBe(16);
|
||||
|
||||
const mnBack = await entropyToMnemonic(ent12);
|
||||
const entBack = await mnemonicToEntropy(mnBack);
|
||||
expect(ent12).toEqual(entBack);
|
||||
|
||||
const valid24 = "zone huge rather sad stomach ostrich real decline laptop glimpse gasp reunion garbage rain reopen furnace catch hire feed charge cheese liquid earn exchange";
|
||||
const ent24 = await mnemonicToEntropy(valid24);
|
||||
expect(ent24.length).toBe(32);
|
||||
});
|
||||
|
||||
it('should be deterministic for the same HKDF inputs', async () => {
|
||||
const data = new Uint8Array(64).fill(0x01);
|
||||
const info1 = new TextEncoder().encode('test');
|
||||
const info2 = new TextEncoder().encode('different');
|
||||
|
||||
const out1 = await hkdfExtractExpand(data, 32, info1);
|
||||
const out2 = await hkdfExtractExpand(data, 32, info1);
|
||||
const out3 = await hkdfExtractExpand(data, 32, info2);
|
||||
|
||||
expect(out1).toEqual(out2);
|
||||
expect(out1).not.toEqual(out3);
|
||||
});
|
||||
|
||||
it('should produce correct HKDF lengths and match prefixes', async () => {
|
||||
const data = fromHex('ab'.repeat(32));
|
||||
const info = new TextEncoder().encode('len-test');
|
||||
|
||||
const out16 = await hkdfExtractExpand(data, 16, info);
|
||||
const out32 = await hkdfExtractExpand(data, 32, info);
|
||||
|
||||
expect(out16.length).toBe(16);
|
||||
expect(out32.length).toBe(32);
|
||||
expect(out16).toEqual(out32.slice(0, 16));
|
||||
});
|
||||
|
||||
it('should detect bad dice patterns', () => {
|
||||
expect(detectBadPatterns("1111111111").bad).toBe(true);
|
||||
expect(detectBadPatterns("123456123456").bad).toBe(true);
|
||||
expect(detectBadPatterns("222333444555").bad).toBe(true);
|
||||
expect(detectBadPatterns("314159265358979323846264338327950").bad).toBe(false);
|
||||
});
|
||||
|
||||
it('should calculate dice stats correctly', () => {
|
||||
const rolls = "123456".repeat(10); // 60 rolls, perfectly uniform
|
||||
const stats = calculateDiceStats(rolls);
|
||||
|
||||
expect(stats.length).toBe(60);
|
||||
expect(stats.distribution).toEqual({ 1: 10, 2: 10, 3: 10, 4: 10, 5: 10, 6: 10 });
|
||||
expect(stats.mean).toBeCloseTo(3.5);
|
||||
expect(stats.chiSquare).toBe(0); // Perfect uniformity
|
||||
});
|
||||
|
||||
it('should convert dice to bytes using integer math', () => {
|
||||
const rolls = "123456".repeat(17); // 102 rolls
|
||||
const bytes = diceToBytes(rolls);
|
||||
|
||||
// Based on python script: `(102 * 2584965 // 1000000 + 7) // 8` = 33 bytes
|
||||
expect(bytes.length).toBe(33);
|
||||
});
|
||||
|
||||
// --- Crucial Integration Tests ---
|
||||
|
||||
it('[CRITICAL] must reproduce the exact blended mnemonic for 4 seeds', async () => {
|
||||
const sessionMnemonics = [
|
||||
// 2x 24-word seeds
|
||||
"dog guitar hotel random owner gadget salute riot patrol work advice panic erode leader pass cross section laundry elder asset soul scale immune scatter",
|
||||
"unable point minimum sun peanut habit ready high nothing cherry silver eagle pen fabric list collect impact loan casual lyrics pig train middle screen",
|
||||
// 2x 12-word seeds
|
||||
"ethics super fog off merge misery atom sail domain bullet rather lamp",
|
||||
"life repeat play screen initial slow run stumble vanish raven civil exchange"
|
||||
];
|
||||
|
||||
const expectedMnemonic = "gasp question busy coral shrug jacket sample return main issue finish truck cage task tiny nerve desk treat feature balance idea timber dose crush";
|
||||
|
||||
const { blendedMnemonic24 } = await blendMnemonicsAsync(sessionMnemonics);
|
||||
|
||||
expect(blendedMnemonic24).toBe(expectedMnemonic);
|
||||
});
|
||||
|
||||
it('[CRITICAL] must reproduce the exact final mixed output with 4 seeds and dice', async () => {
|
||||
const sessionMnemonics = [
|
||||
"dog guitar hotel random owner gadget salute riot patrol work advice panic erode leader pass cross section laundry elder asset soul scale immune scatter",
|
||||
"unable point minimum sun peanut habit ready high nothing cherry silver eagle pen fabric list collect impact loan casual lyrics pig train middle screen",
|
||||
"ethics super fog off merge misery atom sail domain bullet rather lamp",
|
||||
"life repeat play screen initial slow run stumble vanish raven civil exchange"
|
||||
];
|
||||
const diceRolls = "3216534562134256361653421342634265362163523652413643616523462134652431625362543";
|
||||
|
||||
const expectedFinalMnemonic = "satisfy sphere banana negative blood divide force crime window fringe private market sense enjoy diet talent super abuse toss miss until visa inform dignity";
|
||||
|
||||
// Stage 1: Blend
|
||||
const { blendedEntropy } = await blendMnemonicsAsync(sessionMnemonics);
|
||||
|
||||
// Stage 2: Mix
|
||||
const { finalMnemonic } = await mixWithDiceAsync(blendedEntropy, diceRolls, 256);
|
||||
|
||||
expect(finalMnemonic).toBe(expectedFinalMnemonic);
|
||||
});
|
||||
});
|
||||
450
src/lib/seedblend.ts
Normal file
450
src/lib/seedblend.ts
Normal file
@@ -0,0 +1,450 @@
|
||||
/**
|
||||
* @file Seed Blending Library for seedpgp-web
|
||||
* @author Gemini
|
||||
* @version 1.0.0
|
||||
*
|
||||
* @summary
|
||||
* A direct and 100% logic-compliant port of the 'dice_mix_interactive.py'
|
||||
* Python script to TypeScript for use in browser environments. This module
|
||||
* implements XOR-based seed blending and HKDF-SHA256 enhancement with dice
|
||||
* rolls using the Web Crypto API.
|
||||
*
|
||||
* @description
|
||||
* The process involves two stages:
|
||||
* 1. **Mnemonic Blending**: Multiple BIP39 mnemonics are converted to their
|
||||
* raw entropy and commutatively blended using a bitwise XOR operation.
|
||||
* 2. **Dice Mixing**: The blended entropy is combined with entropy from a
|
||||
* long string of physical dice rolls. The result is processed through
|
||||
* HKDF-SHA256 to produce a final, cryptographically-strong mnemonic.
|
||||
*
|
||||
* This implementation strictly follows the Python script's logic, including
|
||||
* checksum validation, bitwise operations, and cryptographic constructions,
|
||||
* to ensure verifiable, deterministic outputs that match the reference script.
|
||||
*/
|
||||
|
||||
import wordlistTxt from '../bip39_wordlist.txt?raw';
|
||||
import { webcrypto } from 'crypto';
|
||||
|
||||
// --- Isomorphic Crypto Setup ---
|
||||
|
||||
// Use browser crypto if available, otherwise fallback to Node.js webcrypto.
|
||||
// This allows the library to run in both the browser and the test environment (Node.js).
|
||||
const subtle = (typeof window !== 'undefined' && window.crypto?.subtle)
|
||||
? window.crypto.subtle
|
||||
: webcrypto.subtle;
|
||||
|
||||
|
||||
// --- BIP39 Wordlist Loading ---
|
||||
|
||||
/**
|
||||
* The BIP39 English wordlist, loaded directly from the project file.
|
||||
*/
|
||||
export const BIP39_WORDLIST: readonly string[] = wordlistTxt.trim().split('\n');
|
||||
|
||||
/**
|
||||
* A Map for fast, case-insensitive lookup of a word's index.
|
||||
*/
|
||||
export const WORD_INDEX = new Map<string, number>(
|
||||
BIP39_WORDLIST.map((word, index) => [word, index])
|
||||
);
|
||||
|
||||
if (BIP39_WORDLIST.length !== 2048) {
|
||||
throw new Error(`Invalid wordlist loaded: expected 2048 words, got ${BIP39_WORDLIST.length}`);
|
||||
}
|
||||
|
||||
|
||||
// --- Web Crypto API Helpers ---
|
||||
|
||||
/**
|
||||
* Computes the SHA-256 hash of the given data.
|
||||
* @param data The data to hash.
|
||||
* @returns A promise that resolves to the hash as a Uint8Array.
|
||||
*/
|
||||
async function sha256(data: Uint8Array): Promise<Uint8Array> {
|
||||
const hashBuffer = await subtle.digest('SHA-256', data);
|
||||
return new Uint8Array(hashBuffer);
|
||||
}
|
||||
|
||||
/**
|
||||
* Performs an HMAC-SHA256 operation.
|
||||
* @param key The HMAC key.
|
||||
* @param data The data to authenticate.
|
||||
* @returns A promise that resolves to the HMAC tag.
|
||||
*/
|
||||
async function hmacSha256(key: Uint8Array, data: Uint8Array): Promise<Uint8Array> {
|
||||
const cryptoKey = await subtle.importKey(
|
||||
'raw',
|
||||
key,
|
||||
{ name: 'HMAC', hash: 'SHA-256' },
|
||||
false, // not exportable
|
||||
['sign']
|
||||
);
|
||||
const signature = await subtle.sign('HMAC', cryptoKey, data);
|
||||
return new Uint8Array(signature);
|
||||
}
|
||||
|
||||
|
||||
// --- Core Cryptographic Functions (Ported from Python) ---
|
||||
|
||||
/**
|
||||
* XOR two byte arrays, cycling the shorter one if lengths differ.
|
||||
* This is a direct port of `xor_bytes` from the Python script.
|
||||
*/
|
||||
export function xorBytes(a: Uint8Array, b: Uint8Array): Uint8Array {
|
||||
const maxLen = Math.max(a.length, b.length);
|
||||
const result = new Uint8Array(maxLen);
|
||||
for (let i = 0; i < maxLen; i++) {
|
||||
result[i] = a[i % a.length] ^ b[i % b.length];
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* An asynchronous, browser-compatible port of `hkdf_extract_expand` from the Python script.
|
||||
* Implements HKDF using HMAC-SHA256 according to RFC 5869.
|
||||
*
|
||||
* @param keyMaterial The input keying material (IKM).
|
||||
* @param length The desired output length in bytes.
|
||||
* @param info Optional context and application specific information.
|
||||
* @returns A promise resolving to the output keying material (OKM).
|
||||
*/
|
||||
export async function hkdfExtractExpand(
|
||||
keyMaterial: Uint8Array,
|
||||
length: number = 32,
|
||||
info: Uint8Array = new Uint8Array(0)
|
||||
): Promise<Uint8Array> {
|
||||
// 1. Extract
|
||||
const salt = new Uint8Array(32).fill(0); // Fixed zero salt, as in Python script
|
||||
const prk = await hmacSha256(salt, keyMaterial);
|
||||
|
||||
// 2. Expand
|
||||
let t = new Uint8Array(0);
|
||||
let okm = new Uint8Array(length);
|
||||
let written = 0;
|
||||
let counter = 1;
|
||||
|
||||
while (written < length) {
|
||||
const dataToHmac = new Uint8Array(t.length + info.length + 1);
|
||||
dataToHmac.set(t, 0);
|
||||
dataToHmac.set(info, t.length);
|
||||
dataToHmac.set([counter], t.length + info.length);
|
||||
|
||||
t = await hmacSha256(prk, dataToHmac);
|
||||
|
||||
const toWrite = Math.min(t.length, length - written);
|
||||
okm.set(t.slice(0, toWrite), written);
|
||||
written += toWrite;
|
||||
counter++;
|
||||
}
|
||||
|
||||
return okm;
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a BIP39 mnemonic string to its raw entropy bytes.
|
||||
* Asynchronously performs checksum validation.
|
||||
* This is a direct port of `mnemonic_to_bytes` from the Python script.
|
||||
*/
|
||||
export async function mnemonicToEntropy(mnemonicStr: string): Promise<Uint8Array> {
|
||||
const words = mnemonicStr.trim().toLowerCase().split(/\s+/);
|
||||
if (words.length !== 12 && words.length !== 24) {
|
||||
throw new Error("Mnemonic must be 12 or 24 words");
|
||||
}
|
||||
|
||||
let fullInt = 0n;
|
||||
for (const word of words) {
|
||||
const index = WORD_INDEX.get(word);
|
||||
if (index === undefined) {
|
||||
throw new Error(`Invalid word: ${word}`);
|
||||
}
|
||||
fullInt = (fullInt << 11n) | BigInt(index);
|
||||
}
|
||||
|
||||
const totalBits = words.length * 11;
|
||||
const CS = totalBits / 33; // 4 for 12 words, 8 for 24 words
|
||||
const entropyBits = totalBits - CS;
|
||||
|
||||
let entropyInt = fullInt >> BigInt(CS);
|
||||
const entropyBytes = new Uint8Array(entropyBits / 8);
|
||||
|
||||
for (let i = entropyBytes.length - 1; i >= 0; i--) {
|
||||
entropyBytes[i] = Number(entropyInt & 0xFFn);
|
||||
entropyInt >>= 8n;
|
||||
}
|
||||
|
||||
// Verify checksum
|
||||
const hashBytes = await sha256(entropyBytes);
|
||||
const computedChecksum = hashBytes[0] >> (8 - CS);
|
||||
const originalChecksum = Number(fullInt & ((1n << BigInt(CS)) - 1n));
|
||||
|
||||
if (originalChecksum !== computedChecksum) {
|
||||
throw new Error("Invalid mnemonic checksum");
|
||||
}
|
||||
|
||||
return entropyBytes;
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts raw entropy bytes to a BIP39 mnemonic string.
|
||||
* Asynchronously calculates and appends the checksum.
|
||||
* This is a direct port of `bytes_to_mnemonic` from the Python script.
|
||||
*/
|
||||
export async function entropyToMnemonic(entropyBytes: Uint8Array): Promise<string> {
|
||||
const ENT = entropyBytes.length * 8;
|
||||
if (ENT !== 128 && ENT !== 256) {
|
||||
throw new Error("Entropy must be 128 or 256 bits");
|
||||
}
|
||||
const CS = ENT / 32;
|
||||
|
||||
const hashBytes = await sha256(entropyBytes);
|
||||
const checksum = hashBytes[0] >> (8 - CS);
|
||||
|
||||
let entropyInt = 0n;
|
||||
for (const byte of entropyBytes) {
|
||||
entropyInt = (entropyInt << 8n) | BigInt(byte);
|
||||
}
|
||||
|
||||
const fullInt = (entropyInt << BigInt(CS)) | BigInt(checksum);
|
||||
const totalBits = ENT + CS;
|
||||
|
||||
const mnemonicWords: string[] = [];
|
||||
for (let i = 0; i < totalBits / 11; i++) {
|
||||
const shift = BigInt(totalBits - (i + 1) * 11);
|
||||
const index = Number((fullInt >> shift) & 0x7FFn);
|
||||
mnemonicWords.push(BIP39_WORDLIST[index]);
|
||||
}
|
||||
|
||||
return mnemonicWords.join(' ');
|
||||
}
|
||||
|
||||
|
||||
// --- Dice and Statistical Functions ---
|
||||
|
||||
/**
|
||||
* Converts a string of dice rolls to a byte array using integer-based math
|
||||
* to avoid floating point precision issues.
|
||||
* This is a direct port of the dice conversion logic from the Python script.
|
||||
*/
|
||||
export function diceToBytes(diceRolls: string): Uint8Array {
|
||||
const n = diceRolls.length;
|
||||
|
||||
// Integer-based calculation of bits: n * log2(6)
|
||||
// log2(6) ≈ 2.5849625, so we use a scaled integer 2584965 for precision.
|
||||
const totalBits = Math.floor(n * 2584965 / 1000000);
|
||||
const diceBytesLen = Math.ceil(totalBits / 8);
|
||||
|
||||
let diceInt = 0n;
|
||||
for (const roll of diceRolls) {
|
||||
const value = parseInt(roll, 10);
|
||||
if (isNaN(value) || value < 1 || value > 6) {
|
||||
throw new Error(`Invalid dice roll: '${roll}'. Must be 1-6.`);
|
||||
}
|
||||
diceInt = diceInt * 6n + BigInt(value - 1);
|
||||
}
|
||||
|
||||
if (diceBytesLen === 0 && diceInt > 0n) {
|
||||
// This case should not be hit with reasonable inputs but is a safeguard.
|
||||
throw new Error("Cannot represent non-zero dice value in zero bytes.");
|
||||
}
|
||||
|
||||
const diceBytes = new Uint8Array(diceBytesLen);
|
||||
for (let i = diceBytes.length - 1; i >= 0; i--) {
|
||||
diceBytes[i] = Number(diceInt & 0xFFn);
|
||||
diceInt >>= 8n;
|
||||
}
|
||||
|
||||
return diceBytes;
|
||||
}
|
||||
|
||||
/**
|
||||
* Detects statistically unlikely patterns in a string of dice rolls.
|
||||
* This is a direct port of `detect_bad_patterns`.
|
||||
*/
|
||||
export function detectBadPatterns(diceRolls: string): { bad: boolean; message?: string } {
|
||||
const patterns = [
|
||||
/1{5,}/, /2{5,}/, /3{5,}/, /4{5,}/, /5{5,}/, /6{5,}/, // Long repeats
|
||||
/(123456){2,}/, /(654321){2,}/, /(123){3,}/, /(321){3,}/, // Sequences
|
||||
/(?:222333444|333444555|444555666)/, // Grouped increments
|
||||
/(\d)\1{4,}/, // Any digit repeated 5+
|
||||
/(?:121212|131313|141414|151515|161616){2,}/, // Alternating
|
||||
];
|
||||
|
||||
for (const pattern of patterns) {
|
||||
if (pattern.test(diceRolls)) {
|
||||
return { bad: true, message: `Bad pattern detected: matches ${pattern.source}` };
|
||||
}
|
||||
}
|
||||
return { bad: false };
|
||||
}
|
||||
|
||||
/**
|
||||
* Interface for dice roll statistics.
|
||||
*/
|
||||
export interface DiceStats {
|
||||
length: number;
|
||||
distribution: Record<number, number>;
|
||||
mean: number;
|
||||
stdDev: number;
|
||||
estimatedEntropyBits: number;
|
||||
chiSquare: number;
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates and returns various statistics for the given dice rolls.
|
||||
* Ported from `calculate_dice_stats` and the main script's stats logic.
|
||||
*/
|
||||
export function calculateDiceStats(diceRolls: string): DiceStats {
|
||||
if (!diceRolls) {
|
||||
return { length: 0, distribution: {}, mean: 0, stdDev: 0, estimatedEntropyBits: 0, chiSquare: 0 };
|
||||
}
|
||||
const rolls = diceRolls.split('').map(c => parseInt(c, 10));
|
||||
const n = rolls.length;
|
||||
|
||||
const counts: Record<number, number> = { 1: 0, 2: 0, 3: 0, 4: 0, 5: 0, 6: 0 };
|
||||
for (const roll of rolls) {
|
||||
counts[roll]++;
|
||||
}
|
||||
|
||||
const sum = rolls.reduce((a, b) => a + b, 0);
|
||||
const mean = sum / n;
|
||||
|
||||
const variance = rolls.reduce((a, b) => a + Math.pow(b - mean, 2), 0) / n;
|
||||
const stdDev = n > 1 ? Math.sqrt(rolls.reduce((a, b) => a + Math.pow(b - mean, 2), 0) / (n - 1)) : 0;
|
||||
|
||||
const estimatedEntropyBits = n * Math.log2(6);
|
||||
|
||||
const expected = n / 6;
|
||||
let chiSquare = 0;
|
||||
for (let i = 1; i <= 6; i++) {
|
||||
chiSquare += Math.pow(counts[i] - expected, 2) / expected;
|
||||
}
|
||||
|
||||
return {
|
||||
length: n,
|
||||
distribution: counts,
|
||||
mean: mean,
|
||||
stdDev: stdDev,
|
||||
estimatedEntropyBits,
|
||||
chiSquare,
|
||||
};
|
||||
}
|
||||
|
||||
|
||||
// --- Main Blending Logic ---
|
||||
|
||||
/**
|
||||
* Checks for weak XOR results (low diversity or all zeros).
|
||||
* Ported from the main logic in the Python script.
|
||||
*/
|
||||
export function checkXorStrength(blendedEntropy: Uint8Array): {
|
||||
isWeak: boolean;
|
||||
uniqueBytes: number;
|
||||
allZeros: boolean;
|
||||
} {
|
||||
const uniqueBytes = new Set(blendedEntropy).size;
|
||||
const allZeros = blendedEntropy.every(byte => byte === 0);
|
||||
|
||||
// Heuristic from Python script: < 32 unique bytes is a warning.
|
||||
return {
|
||||
isWeak: uniqueBytes < 32 || allZeros,
|
||||
uniqueBytes,
|
||||
allZeros,
|
||||
};
|
||||
}
|
||||
|
||||
|
||||
// --- Main Blending & Mixing Orchestration ---
|
||||
|
||||
/**
|
||||
* Stage 1: Asynchronously blends multiple mnemonics using XOR.
|
||||
*
|
||||
* @param mnemonics An array of mnemonic strings to blend.
|
||||
* @returns A promise that resolves to the blended entropy and preview mnemonics.
|
||||
*/
|
||||
export async function blendMnemonicsAsync(mnemonics: string[]): Promise<{
|
||||
blendedEntropy: Uint8Array;
|
||||
blendedMnemonic12: string;
|
||||
blendedMnemonic24?: string;
|
||||
maxEntropyBits: number;
|
||||
}> {
|
||||
if (mnemonics.length === 0) {
|
||||
throw new Error("At least one mnemonic is required for blending.");
|
||||
}
|
||||
|
||||
const entropies = await Promise.all(mnemonics.map(mnemonicToEntropy));
|
||||
|
||||
let maxEntropyBits = 128;
|
||||
for (const entropy of entropies) {
|
||||
if (entropy.length * 8 > maxEntropyBits) {
|
||||
maxEntropyBits = entropy.length * 8;
|
||||
}
|
||||
}
|
||||
|
||||
// Commutative XOR blending
|
||||
let blendedEntropy = entropies[0];
|
||||
for (let i = 1; i < entropies.length; i++) {
|
||||
blendedEntropy = xorBytes(blendedEntropy, entropies[i]);
|
||||
}
|
||||
|
||||
// Generate previews
|
||||
const blendedMnemonic12 = await entropyToMnemonic(blendedEntropy.slice(0, 16));
|
||||
let blendedMnemonic24: string | undefined;
|
||||
if (blendedEntropy.length >= 32) {
|
||||
blendedMnemonic24 = await entropyToMnemonic(blendedEntropy.slice(0, 32));
|
||||
}
|
||||
|
||||
return {
|
||||
blendedEntropy,
|
||||
blendedMnemonic12,
|
||||
blendedMnemonic24,
|
||||
maxEntropyBits
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Stage 2: Asynchronously mixes blended entropy with dice rolls using HKDF.
|
||||
*
|
||||
* @param blendedEntropy The result from the XOR blending stage.
|
||||
* @param diceRolls A string of dice rolls (e.g., "16345...").
|
||||
* @param outputBits The desired final entropy size (128 or 256).
|
||||
* @param info A domain separation tag for HKDF.
|
||||
* @returns A promise that resolves to the final mnemonic and related data.
|
||||
*/
|
||||
export async function mixWithDiceAsync(
|
||||
blendedEntropy: Uint8Array,
|
||||
diceRolls: string,
|
||||
outputBits: 128 | 256 = 256,
|
||||
info: string = 'seedsigner-dice-mix'
|
||||
): Promise<{
|
||||
finalEntropy: Uint8Array;
|
||||
finalMnemonic: string;
|
||||
diceOnlyMnemonic: string;
|
||||
}> {
|
||||
if (diceRolls.length < 50) {
|
||||
throw new Error("A minimum of 50 dice rolls is required (99+ recommended).");
|
||||
}
|
||||
|
||||
const diceBytes = diceToBytes(diceRolls);
|
||||
const outputByteLength = outputBits === 128 ? 16 : 32;
|
||||
const infoBytes = new TextEncoder().encode(info);
|
||||
const diceOnlyInfoBytes = new TextEncoder().encode('dice-only');
|
||||
|
||||
// Generate dice-only preview
|
||||
const diceOnlyEntropy = await hkdfExtractExpand(diceBytes, outputByteLength, diceOnlyInfoBytes);
|
||||
const diceOnlyMnemonic = await entropyToMnemonic(diceOnlyEntropy);
|
||||
|
||||
// Combine blended entropy with dice bytes
|
||||
const combinedMaterial = new Uint8Array(blendedEntropy.length + diceBytes.length);
|
||||
combinedMaterial.set(blendedEntropy, 0);
|
||||
combinedMaterial.set(diceBytes, blendedEntropy.length);
|
||||
|
||||
// Apply HKDF to the combined material
|
||||
const finalEntropy = await hkdfExtractExpand(combinedMaterial, outputByteLength, infoBytes);
|
||||
const finalMnemonic = await entropyToMnemonic(finalEntropy);
|
||||
|
||||
return {
|
||||
finalEntropy,
|
||||
finalMnemonic,
|
||||
diceOnlyMnemonic,
|
||||
};
|
||||
}
|
||||
Reference in New Issue
Block a user