A Two-Dimensional Key Vector Based Fast and Lightweight Block Cipher for Constrained Devices

Gathering sensitive patient information is vital in healthcare for providing the proper therapy. The collected data must also be shared with the relevant parties in order to keep the environment open and honest. There is still a significant risk of patient data leakage and misuse for unethical purposes, even with privacy protection mechanisms in place. As a result, we are suggesting a lightweight encryption solution for storing and sharing sensitive data with all parties involved. The data may be easily decrypted and retrieved by the stakeholders who also have the key. Compared to classical encryption approaches, the computing costs are reduced. To illustrate the regulating cryptographic operations, this article uses a 2D key bunch vector with 2048 binary bits. In lesser computer systems, the key length can be conveniently extended with relatively small changes to the computational outlays. In contexts with limited resources, the problem of creating an effective block cypher using the larger key is tackled.