IoT Devices, User Authentication, and Data Management in a Secure, Validated Manner through the Blockchain System

Table 4

The output in the case of an authenticated communicational transaction is performed by the end-user mapped on to the IoT device.

Key Points	Authentic computational transaction description
Status	01 valid transactional and authentication succeed
From	0CDLWGMGv0Ol6uXy0Tc92IRXJSTOlPVlHrvQxJ0VX3iQ23v20YvHP65YR4yBD3Tia
To	0SkOD81SAGJVuKZXarAkrFkh5tDJjs9TW5y7XKkzJvhdunX8b5wkrejfjr
Input	User data and device information for the transaction
Decoded input	{ $characters = ‘0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ’;
	$charactersLength = strlen($characters);
	$randomString = “;
	For ($i = 0; $i < $length; $i++) {
	$randomString. = $characters [rand(0, $charactersLength - 1)];
	}
Decoded output	while($row = mysqli_fetch_array($run)){
	$id = $row[“id”];
	$username = $row[“username”];
	$publickey = $row[“publickey”];
	$previoushash = $row[“previoushash”];
Transactional cost	Algorithm running cost: O(n)s