Abstract: The internet of things is a system of connecting devices to the internet. It interacts with the real world with wide range of applications. Nowadays, in many home, user can remotely access and control a variety of home devices such as smart curtains, lights etc. despite providing convenient services including home monitoring, temperature management and daily work assistance. A smart home can be vulnerable to malicious attacks because all messages are transmitted over insecure channels. Moreover, home devices can be a target for device capture attacks since they are placed in physically accessible locations. But, IOT has a disadvantage that it has less security. To provide security for protecting information to be delivered and communication through the use of codes we use cryptography. In cryptography we are using AES algorithm, in this message will be passed in turns of block ciphers. To connect IOT and cryptography we require MQTT (message queuing telemetry transport) broker to publish and subscribe system takes place, in which we can publish and receive message as a client. This encrypted message cannot be decoded until it has decryption key, so the device can secure from attacks.

Keywords: Internet of Things (IoT), Message Queuing theory telemetry transport (MQTT), Advanced Encryption Standard (AES), Amazon web service (AWS), Light Emitting Diode(LED).

PDF | DOI: 10.17148/IJARCCE.2023.125115

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