Fragile watermarking and unkeyed hash function implementation for image authentication on CNN-UM

Image authentication and integrity have become an important issue for multimedia applications since digital images may be easily modified and perfectly reproduced. This paper addresses the protection of image authentication and integrity on CNN-UM. Watermarking and cryptographic hash functions are techniques used for this protection. We propose two methods using each technique, spatial domain fragile watermarking and a novel unkeyed hash function named Cellhash2D.