HYBRID BAKER MAP WITH AES IN CIPHER BLOCK CHAINING MODE IN MEDICAL IMAGES
K. Amudha, Nelson Kennedy Babu C, Balu S · International Research Journal of Pharmacy · 2017
While transferring the medical images from one place to another place lot of security issues are raised.The security issues are confidentiality, integrity and authenticity.Combined encryption and watermarking technique used to verify the integrity and authenticity of medical images.Encryption algorithms are operated in stream cipher and block cipher mode.Advanced Encryption Standard (AES) algorithm is one of the block cipher algorithm.The proposed method uses Advanced Encryption Standard Algorithm in Cipher Block Chaining (CBC) mode.To increase the security, the proposed technique uses baker key in the original image before applying the AES algorithm.Based on the baker key the image pixel position has been changed.To increase the data hiding capacity this technique embeds the information in the spatial domain and encrypted domain.The main objective of this method is to provide integrity and authenticity of the medical images at the same time increase the information embedding capacity.Experimental security analysis is taken for the 8-bit ultrasound images and 16-bit Positron Emission Tomography (PET) images.