浏览器指纹如何计算：从采集信号到验证隐私设置

await (async () => {
  const module = await import('/public/nickname.js');
  const measurement = await module.fingerprint();
  const record = {
    capturedAt: new Date().toISOString(),
    page: location.href,
    userAgent: navigator.userAgent,
    measurement
  };
  console.log(JSON.stringify(record, null, 2));
})();

await (async () => {
  const { fingerprint } = await import('/public/nickname.js');
  const result = await fingerprint();
  if (!result.clean.length || result.algo !== 'SHA-256') {
    console.log('No SHA-256 result to compare');
    return;
  }

  const lines = [];
  for (const name of result.clean) {
    lines.push(`${name}:${result.sources[name].value}`);
  }
  const bytes = new TextEncoder().encode(lines.join('\n'));
  const digest = new Uint8Array(
    await crypto.subtle.digest('SHA-256', bytes)
  );
  const calculated = Array.from(digest, byte =>
    byte.toString(16).padStart(2, '0')
  ).join('');
  if (calculated !== result.hex) throw new Error('Digest mismatch');
  console.log('SHA-256 matches');
})();