Review On Cryptography and Steganography Techniques in Video

Secure data transmission over the unsecured internet is an important aspect in data communication. Nowadays, authenticity, secrecy, confidentiality are the most important concern in the secure data communication. To provide these concerns, data hiding techniques are used. Cryptography, Steganography and Watermarking techniques are used for data hiding and secure data transmission. Cryptography is the technique of modification or encrypting the secret data in an unreadable form. Steganography is the process of covering the secret data within a carrier file such as text, image, audio and video. Watermarking is a protection technique to shield the information from intruders. For secure data transmission, combinations of cryptography and steganography techniques are most widely used. The secret data is first encrypted using cryptography technique and it is embedded into cover file using steganography technique. In this paper, various techniques for cryptography and steganography are analyzed for secure data transmission over video.