Abstract:
Today, technology change is very fast. Security and fast processing are necessary for data transformation.
The health system is related to important roles in any country for its national interest. E-health care system include patient treatment result, diagnostic report. Patient Health
Information (PHI). Patient health information is securely stored and accesses this data so that only authorized entities can update and retrieve the data over the Internet. Safety becomes an important issue when providing an electric healthcare system because confidential patient data is collected and shared by different users and organizations. Two types of cryptography: Symmetric Key and Asymmetric Key. Using the same keys is Symmetric key and Asymmetric key is using Separate key. In this paper, a Symmetric Key algorithm called as KED (Key Encryption Decryption) using modulo92 is used. Two keys are used in which one is a natural number which is relatively prime to 92. In this paper, KED (Key Encryption and Decryption) algorithm combines AES S- box and DNA cryptography for electronic healthcare security system. In this system, propose an MCS (Medical Center Server) that connects to the patient and the doctor. The proposed system is fast in computing and can withstand cryptographic attacks such as differential and linear cryptanalysis attacks.
