thing.txt

create_signature(payload, type, timestamp, public_key, secret_key) {
  signature = sprintf("payload=%s&public_key=%s&timestamp=%s&type=%s",
              url_encode(payload),
              url_encode(public_key),
              url_encode(timestamp),
              url_encode(type))
  
  return hmac_sha256(signature, secret_key)
}

create_message(payload, type, timestamp, public_key, secret_key) {
  message.payload = payload
  message.type = type
  message.timestamp = timestamp
  message.public_key = public_key
  message.signature = create_signature(payload, type, timestamp, public_key, secret_key)
  
  return message
}