Test sending raw crypto keys via postMessage to a worker. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS All checks passed in worker PASS key.type is 'secret' PASS key.extractable is false PASS key.algorithm.name is 'PBKDF2' PASS key.usages is ['deriveBits', 'deriveKey'] PASS successfullyParsed is true TEST COMPLETE