Resource-Saving Cryptography for Microcontrollers in Biomedical Devices

With the advancement of medical technologies, there is an increasing need for the integration of modern biomedical devices that provide not only diagnosis and treatment but also continuous health monitoring of patients. One of the key requirements for such devices is ensuring the security and confidentiality of the processed data. This is especially relevant for implanted medical devices, which often operate autonomously and have limited computational resources. Microcontrollers used in medical implants typically have low performance and limited power consumption. Therefore, traditional cryptographic methods, which require significant computational resources, are not efficient for such devices. This necessitates the development and implementation of lightweight cryptographic algorithms capable of providing an adequate level of security without overburdening the microcontrollers. The article discusses contemporary approaches to lightweight cryptography, focusing on its use in medical microcontrollers. It analyzes existing methods, their advantages and disadvantages, as well as prospects for the development and implementation of new solutions in this field. Particular attention is given to issues of energy conservation and optimization of computational processes, which are critically important for ensuring the prolonged operation of implanted medical devices.