SHA256
88 lines
2.8 KiB
JavaScript
88 lines
2.8 KiB
JavaScript
import qrcode from '../vendor-qrcode-generator.js';
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const TRANSFER_PREFIX = 'shine-key-transfer-v1:';
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const encoder = new TextEncoder();
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const decoder = new TextDecoder();
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function bytesToBase64Url(bytes) {
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let binary = '';
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bytes.forEach((b) => {
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binary += String.fromCharCode(b);
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});
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return btoa(binary).replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/g, '');
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}
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function base64UrlToBytes(value) {
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const normalized = String(value || '').trim().replace(/-/g, '+').replace(/_/g, '/');
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const padded = normalized + '='.repeat((4 - (normalized.length % 4)) % 4);
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const binary = atob(padded);
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const out = new Uint8Array(binary.length);
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for (let i = 0; i < binary.length; i += 1) out[i] = binary.charCodeAt(i);
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return out;
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}
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export function keyLabel(id) {
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if (id === 'root') return 'root';
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if (id === 'blockchain') return 'blockchain';
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if (id === 'device') return 'device';
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return id;
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}
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export function describeTransferKeys(keys = {}) {
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const out = [];
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if (keys.deviceKey) out.push('device');
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if (keys.blockchainKey) out.push('blockchain');
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if (keys.rootKey) out.push('root');
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return out;
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}
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export function makeKeyTransferText({ login, keys }) {
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const payload = {
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v: 1,
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type: 'shine-key-transfer',
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login: String(login || '').trim(),
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keys: {
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deviceKey: String(keys?.deviceKey || ''),
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blockchainKey: String(keys?.blockchainKey || ''),
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rootKey: String(keys?.rootKey || ''),
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},
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createdAtMs: Date.now(),
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};
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const json = JSON.stringify(payload);
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return `${TRANSFER_PREFIX}${bytesToBase64Url(encoder.encode(json))}`;
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}
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export function parseKeyTransferText(text) {
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const raw = String(text || '').trim();
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if (!raw.startsWith(TRANSFER_PREFIX)) {
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throw new Error('Это не QR-код переноса ключей SHiNE');
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}
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const json = decoder.decode(base64UrlToBytes(raw.slice(TRANSFER_PREFIX.length)));
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const payload = JSON.parse(json);
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if (payload?.v !== 1 || payload?.type !== 'shine-key-transfer') {
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throw new Error('Неподдерживаемый формат QR-кода');
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}
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const login = String(payload.login || '').trim();
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if (!login) throw new Error('В QR-коде нет логина');
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const keys = payload.keys && typeof payload.keys === 'object' ? payload.keys : {};
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if (!keys.deviceKey && !keys.blockchainKey && !keys.rootKey) {
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throw new Error('В QR-коде нет ключей');
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}
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return {
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login,
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keys: {
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deviceKey: String(keys.deviceKey || ''),
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blockchainKey: String(keys.blockchainKey || ''),
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rootKey: String(keys.rootKey || ''),
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},
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keyTypes: describeTransferKeys(keys),
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};
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}
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export function renderQrSvg(text, { cellSize = 4, margin = 4 } = {}) {
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const qr = qrcode(0, 'L');
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qr.addData(String(text || ''), 'Byte');
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qr.make();
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return qr.createSvgTag(cellSize, margin);
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}
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