Comparisons of Encryption Algorithms in Histogram-Equalized Image

Abstract

In personal healthcare information systems we need to encrypt medical image for security reason. Histogram equalization is a significant application for image gray level transformation, which is widely used in image enhancement processing. We adopt keeping encrypted histogram-equalized image data in the database as the security strategy for our personal healthcare information cloud platform system. Three kinds of symmetric encryption algorithms are used to test histogram equalized image. The experiment results show AES encryption algorithm suitable for our personal healthcare information system.