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.
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机译：在物联网架构感知层中起作用的传感器设备的特征在于数据处理和存储容量。这些减少的能力使系统无处不在，轻量化，但大大降低了其安全性。基于物联网的食物可追溯性系统（FTS），旨在确保食品安全和质量，作为Biot开发和部署的激励情景;因此，从这个角度分析了与数据完整性相关的安全挑战和差距。本文提出了BIOS硬件设计，其中包含一些内置VHDL（SHA-256，POW和SD-Memory）和其他外围电子设备的模块，以通过在IOT设备中实现区块链架构的安全要求为感知层提供能力。所提出的硬件在FPGA Altera De0-Nano上实现。 Biots可以通过智能合同作为区块链网络中的矿工参与，并解决与BlockChain-IoT系统中的数据完整性和数据可追溯性相关的安全问题。在IOT硬件中实现的区块链算法可打开到IOT设备安全性的路径，并确保在食品认证过程中参与数据验证。
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