IoT is an emerging technology. In this paper, we will talk about the disadvantages of the Internet of Things. It has a centralized approach, and there is a lack of faith between different devices. There is also only one point that can fail in an IoT system because it is decentralized.
In this paper, we will use Blockchain to solve the problems with IoT devices. The mechanism we have described in the papers is a continuous security mechanism. In this environment, every time a person interacts with an IoT device, their interactions are stored in the BC database as a user’s trial of their IoT device. This way, not any person can easily interact with an IoT device.
A user must have a crypto token to connect with the IoT devices. Tokens are generated by the Blockchain, and proper security measures are in mind. In this paper, we show how to make IoT devices more secure, incorruptible etc. You can get game-changing blockchain services using IT Support Services.
Groundwork of BlockChain
The framework is used in this paper is the Hyper ledger framework. This hyper ledger is used to store the transaction done by the user in a blockchain database. As we know that Blockchain is distributed and decentralized in nature. Using this technology in IoT. We do not have a single point of failure as we have in a centralized approach.
For security purposes, we always have our PIN codes, passcodes etc. But, with the Blockchain, the user also has the crypto token created by the Blockchain itself, so only the legitimate will be able to access data. The crypto token is not just a regular password. It cannot be regenerated easily.
How to perform continuous security?
It involves Identification of IoT-Zone, generation of IoT token and Validation of IoT token.
IoT Zone’s ID: For the purpose of IoT zone identification, we have to continuously monitor the tracks of user transactions. A model has been designed that uses the calculation model to increase the user capability. Markov model and neural recurring network model have been used for the user IoT Zone identification.
Generation of IoT Token: In smart homes, there is an authority known as Enrollment Certificate Authority, aka ECA. The user has to enroll him/herself with ECA to get the IoT token.
Validation of IoT Token: The token generation is not a common process, and it is not easy to hack the token due to its validation process. We sign the IoT token using the algorithm of the RSA digital signature. In the end, the digital signature is being stored in the Blockchain for the trust to develop, and so it cannot be hacked or changed.
So, in the end, we have to say that continuous security is a very good way to keep data safe. We can do this with the help of Blockchain in smart cities.
Managing IoT Devices using Blockchain Platform
Bitcoin was introduced in 2008. To store all the transactions of Bitcoin, the new technology came into being named Blockchain. It was a revolutionary technology. On the other hand, there was new technology on the horizon known as the Internet of Things.
This paper is about how to use a public, decentralized platform called Ethereum to make IoT devices safe. We will store the public keys on Ethereum and the private key on the device. If you are interested, read this paper.
Mitigating IoT Device-based DDoS Attacks using Blockchain
Most IoT devices are small, lightweight, and do not have much memory or computational power. They are open to any type of attack. We want to use Ethereum for the data security of IoT devices because it prevents attacks that mostly involve denial-of-service (DoS) and distributed denial-of-service (DDoS) attacks. We want to avoid a centralized approach where one device is attached to the framework so we can prevent unauthorized devices from being attached.
IoT Blockchain Model
You need to use Ethereum as a software platform for the purpose of decentralized and distributed data and all smart contracts apps. Ethereum has two types of accounts 1st is known as EOA (Externally Owned Accounts), and the 2nd one is Contract accounts.
Centralized vs. Decentralized Servers
Most of the IoT devices have a centralized system that is responsible for the security and data sharing of all IoT devices. This can be a problem because then one system can fail and take down everything. With Ethereum IoT, there is no single point of failure, so it creates a distributed trust.
Block Malicious Devices
This procedure is easier because of blockchain technology. The blocks are chains of data, and Ethereum can be used to maintain records and lists for devices. If a device wants to connect with the IoT framework, Ethereum checks that it has proper credentials that match up with the records available. It then allows the device to connect with other devices in this framework. If not, then it just simply rejects the request.
DDoS attacks protection
If too many requests are sent, the Internet of Things devices will be slowed down. Ethereum has a solution to this called a gas limit. This is where Ethereum sets a limit on the number of requests that can be sent to an IoT device for a specific amount of time. When the number of requests exceeds, Ethereum blocks users from sending any more requests for a certain amount of time.
Working of Trust Free System
IoT devices count on an integrated server to protect them from unauthorized people. The 3rd party offers you a service that is based on monthly or yearly subscriptions. They charge you for the subscription and the labor involved in it. We need a system where we do not have to spend money or buy something else to get trust. We can create our own system using block chaining and the Ethereum framework.
How can Blockchain provide security to smart devices?
Ethereum is a framework that allows users to create their own apps. These Ethereum apps use the infrastructure provided by the Blockchain and smart contracts.
The Blockchain uses cryptographic signatures for all transactions and is decentralized. It means it has no single point of failure and every node on the network has a copy of the ledger. So if one fails, then others take over with no loss of data or information.
The network has some security. You can’t get into someone’s records or anything. This is good because it keeps people safe. Using Blockchain, we can make our private servers secure without spending money on hardware.