code: func EasySeal(message []byte, peersPublicKey, privateKey nacl.Key) []byte {
  	nonce := nacl.NewNonce()
  	return Seal(nonce[:], message, nonce, peersPublicKey, privateKey)
  }
docs: // EasySeal encrypts message using peersPublicKey and privateKey. The output
  // will have a randomly generated nonce prepended to it. The output will be
  // Overhead + 24 bytes longer than the original.