Abstract
Sensor devices that act in the IoT architecture perception layer are characterized by low data processing and storage capacity. These reduced capabilities make the system ubiquitous and lightweight, but considerably reduce its security. The IoT-based Food Traceability Systems (FTS), aimed at ensuring food safety and quality, serve as a motivating scenario for BIoTS development and deployment; therefore, security challenges and gaps related with data integrity are analyzed from this perspective. This paper proposes the BIoTS hardware design that contains some modules built-in VHDL (SHA-256, PoW, and SD-Memory) and other peripheral electronic devices to provide capabilities to the perception layer by implementing the blockchain architecture’s security requirements in an IoT device. The proposed hardware is implemented on FPGA Altera DE0-Nano. BIoTS can participate as a miner in the blockchain network through Smart Contracts and solve security issues related to data integrity and data traceability in an Blockchain-IoT system. Blockchain algorithms implemented in IoT hardware opens a path to IoT devices’ security and ensures participation in data validation inside a food certification process.
Highlights
Internet of Things (IoT) has become an adaptable technology to any context for collecting and transmitting data, analyzing, or informing the stakeholders [1]
The BIoTS device comprises a platform of peripheral analog electronics connected to the digital module designed in a reconfigurable FPGA
This paper proposes the hardware architecture of blockchain (Cryptography and Consensus Algorithms) to enrich an IoT device and provide it with remarkable capabilities to address security issues in the IoT ecosystem
Summary
Internet of Things (IoT) has become an adaptable technology to any context for collecting and transmitting data, analyzing, or informing the stakeholders [1]. Improving the communication process between peer devices might focus on solving data management from several technological schemes (fog or edge computing), but the information transparency recorded is not guaranteed. A current IoT system contains various devices with embedded sensors characterized by low power, reduced memory capacity, and limited processing capabilities. These features allow identifying the origin of significant security problems. Any solution concerning IoT devices’ security capabilities is designed from the software that governs the management data, generally in the system’s management layer. For this reason, new challenges arise today in the management of informatic security in communication systems
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