CRYPTANALYSIS ASPECTS IN 3-D WATERMARKING

3-D object security is increasingly brought to the attention of the public by the expansion of new multimedia technolo-gies such as the 3-D printing. In the development of crypto-security systems of 3-D objects, we can identify two major directions represented by the cryptography and digital water-marking. A good security system has to be format compliant, has to preserve the original bit rate and, whenever possible, it should be reversible. Watermarking methodology has the ad-vantage of ensuring that the embedded hidden message can be verified at any processing stage such as the transmission, stor-age and when visualizing the embedding media. In this paper, we review the previous work in 3-D security and analyze the crypto-security of a 3-D watermarking method which embeds information by mesh surface distortion minimization. Then, we discuss future avenues of research by presenting emerging applications. Index Terms — 3-D watermarking, 3-D encryption, cryptanalysis, emerging applications. 1