Hybrid Data Encryption Algorithm for Secure Medical Data Transmission in Cloud Environment

At present times, healthcare data stored in cloud is considered as a highly sensitive record, which should be hidden towards unauthorized accesses to protect the information about the patient. Hence, security related to cloud based medical data transmission receives significant attention among researchers and academicians. This study presents a new hybridization of data encryption model to shelter the diagnosis data in medical images. The proposed model is presented by the integration of 2D discrete wavelet transform technique with a proposed hybrid encryption scheme. The presented hybrid encryption scheme is derived by the integration of Blowfish and Two fish encryption algorithms. The presented model begins with the encryption of secrecy data and then concealed the outcome by the use of outcome in a cover image and 2D-DWT-1L or 2D-DWT-2L. The color images are utilized as cover images for concealing various text sizes. The outcome of the projected technique is tested against different benchmark images and the results are ensured by the use of different performance measures.