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Improved Elliptic Curve Cryptography with Homomorphic Encryption for Medical Image Encryption

Medical image contains sensitive information of patients. In order to improve the efficiency and security of medical image encryption, we propose an improved elliptic curve cryptography by combining with homomorphic encryption in this paper. Traditional elliptic curve cryptography has some disadvantages, so we first make improvement for elliptic curve cryptography. Then the modified elliptic curve cryptography combining with homomorphic encryption is used in the process of medical image encryption. The experimental results show that compared with other algorithms, this new algorithm not only has good encryption effect, high security and large amount of key, but also has good sensitivity to initial value and anti-attack ability.