eHealthcare Security Concept Based on Pki and Blockchain Technology

Technological advances in information and communication technologies induce the inevitable automation of life processes. The transition of social and business activities to cyberspace has brought a new quality to everyday life, but at the same time, it has produced new challenges in the field of data protection. One of the areas where this issue is particularly sensitive is the field of healthcare. Unauthorized access to a patient's data can cause many almost insurmountable problems in life, ranging from theft and identity abuse to putting them in an unequal life situation compared to insurance companies, credit and banking systems, transportation systems, and many other life situations. In this paper, the concept of eHealthcare data protec- tion based on PKI and Blockchain technology is proposed. PKI technology ensures reliable identification of all entities in the system by applying digital certificates of the appropriate type and controlling data integrity at the time of creation. Blockchain technology ensures the integrity of data in time in the sense that data entered into the blockchain cannot be changed, deleted, or inserted into new ones without violating a chaining structure. Finally, it was shown that the electronic healthcare information system based on these principles is compatible with the GDPR of the European Union. The proposed principles are also in line with the main directions of designing secure information systems known under the name zero trust information systems.