Function validateKeyOps

lib/internal/crypto/util.js:943–971

(keyOps, usagesSet)

}

function validateKeyOps(keyOps, usagesSet) {
  if (keyOps === undefined) return;
  validateArray(keyOps, 'keyData.key_ops');
  let keyOpsMask = 0;
  for (let n = 0; n < keyOps.length; n++) {
    const op = keyOps[n];
    const opMask = kUsageMasks[op];
    // Skipping unknown key ops
    if (opMask === undefined)
      continue;
    // Have we seen it already? if so, error
    if (keyOpsMask & opMask)
      throw lazyDOMException('Duplicate key operation', 'DataError');
    keyOpsMask |= opMask;

    // TODO(@jasnell): RFC7517 section 4.3 strong recommends validating
    // key usage combinations. Specifically, it says that unrelated key
    // ops SHOULD NOT be used together. We're not yet validating that here.
  }

  if (usagesSet !== undefined) {
    const usagesMask = getUsagesMask(usagesSet);
    if ((keyOpsMask & usagesMask) !== usagesMask) {
      throw lazyDOMException(
        'Key operations and usage mismatch',
        'DataError');
    }
  }
}

function secureHeapUsed() {
  const val = _secureHeapUsed();