Vito API と購入

Authorization: Bearer vito_live_xxxxxxxxxxxxxxxx

X-Vito-Signature: ts=<unix>;h1=<hex>

const crypto = require('crypto');

function verify(rawBody, header, secret) {
  const parts = header.split(';');
  const ts = parts.find(p => p.startsWith('ts='))?.slice(3);
  const sigs = parts.filter(p => p.startsWith('h1=')).map(p => p.slice(3));
  if (!ts || sigs.length === 0) return false;

  // Reject anything older than ~5 minutes — replay protection.
  if (Math.abs(Date.now() / 1000 - Number(ts)) > 300) return false;

  const expected = Buffer.from(
    crypto.createHmac('sha256', secret).update(`${ts}:${rawBody}`).digest('hex'),
  );

  // Any matching signature is valid — a rotation emits several.
  return sigs.some(sig => {
    const actual = Buffer.from(sig);
    // timingSafeEqual throws when the lengths differ, so check first.
    return (
      actual.length === expected.length && crypto.timingSafeEqual(actual, expected)
    );
  });
}

{
  "success": false,
  "error": {
    "type": "Forbidden",
    "message": "API key lacks the required scope for this operation.",
    "code": "VITO_INSUFFICIENT_SCOPE"
  },
  "requestId": "…",
  "timestamp": 1735161600000
}