Most of the existing encryption methods use the same key to secure different RTP payloads during a given session. However, the use of the session key cannot guarantee protection against brute force attacks that can be done after transmission using the captured RTP data for the realtime multimedia streams. This paper deals with the packet key methods where Diffie-Hellman key exchange procedures ...

Encryption and watermarking are complementary lines of defense in protecting multimedia content. Recent watermarking techniques have therefore been developed independent from encryption techniques. In this paper, we present a hybrid image protection scheme to establish a relation between the data encryption key and the watermark. Prepositioned secret sharing allows the reconstruction of differe...

Encryption and watermarking are complementary lines of defense in protecting multimedia content. Recent watermarking techniques have therefore been developed independent from encryption techniques. In this paper, we present a hybrid image protection scheme to establish a relation between the data encryption key and the watermark. Prepositioned secret sharing allows the reconstruction of differe...

Security has become an important issue with the proliferation of digital communication. Multimedia sources such as images plays an important role in security of data communication. Data hiding technique can be used to implant secret data in host images where existence of data is undisclosed which reduces chances of unauthorized access. Some applications containing legal considerations require r...

Security is an important issue in digital data transmission and storage. The security can be provided by image encryption. Encryption is one of the ways to provide high security when images are transmitted over the network. Image encryption techniques scrambled the pixels of the image and decrease the correlation among the pixels, so that we will get lower correlation among the pixel and get th...

In this paper, combined the encrypting and compressing processes to consider the choices of which types of bits are most effective in the selective encryption sense when they are changed. So, instead of encrypting the whole file bit by bit, changed only these highly sensitive bits. Moreover, by combining the compression and encryption tasks and reducing the total encryption work required, it wi...

Secrete permutations are widely used in multimedia encryption algorithms, and many permutation-only ciphers have been proposed in recent years for protection of different types of multimedia data, especially digital images and videos. Based on a normalized encryption/decryption model, this paper analyzes the security of permutation-only image ciphers working in spatial domain from a general per...

Both encryption and digital watermarking techniques need to be incorporated in a digital rights management framework to address different aspects of content management. While encryption transforms original multimedia object into another form, digital watermarking leaves the original object intact and recognizable. The objective is to develop low power, real time, reliable and secure watermarkin...