An image authentication scheme considering privacy - a first step towards surveillance camera authentication

In this paper, we propose an authentication scheme considering privacy aimed for JPEG images. A picture from a surveillance camera must be authenticated when submitted to a third party, such as a legal organization, courts and so on. On one hand, privacy of objects in the picture must be considered. Therefore, mosaic and masking must be performed to the picture if needed. Our scheme authenticate JPEG picture, where parts are processed by mosaic and masking. Our scheme uses Merkle tree and Sandhu tree and achieves small overhead size needed to authenticate the processed picture.