Survey of Secure and Compression Encryption Key Based Textual Data Deduplication using Digital Watermarking

Digital watermarking is one of the important digital image processing techniques and it is a popular research area. Due to development in multimedia technology and vast use of Internet, the watermarking technique has developed rapidly and it plays a major role in digital data security. The introduction to telemedicine, e-diagnosis and tele-diagnosis, leads to creation of copy, transmit and distribute digital data over networks which involves security risks. Providing security and authentication to the medical data has become an essential aspect in the field of medical sciences. This paper studied of compressed textual data deduplication using encryption key and digital watermarking technique. The symmetric Key is also called as session key and each symmetric key is used only once. The encrypted message and its session key are sent to the recipients of the email message. The session key must be sent to the email recipients so that, they know how to decrypt the message. The public key encryption algorithm is used to securely share the session key with the recipients of the email.