A Hybrid Data Logging System Using Cryptographic Hash Blocks Based on SHA-256 and MD5 for Water Treatment Plant and Distribution Line

To maintain and ensure that the quality of water produced from the water treatment plant and the same quality is delivered to customers, there is the need to create a mechanism called the Data Logging System, where data will be collected from strategic points along the distribution pipe line, using sensors planted on the distribution line and if there is any change in one of the characteristics of the quality of the water, it could quickly be detected remotely using a distributed system. The purpose of this paper is to propose a hybrid data logging system by using cryptographic hash blocks based on Secure Hash Function 256 (SHA-256) and Message Digest 5 (MD5) to monitor the quality of water produced from the water treatment plant to the customers. The hash functions generated at the data logging centre using cryptographic hash blocks based on SHA-256 and MD5 (Hybrid) will be secured and very difficult to attack because it was stored using the Blockchain technology.