A digital camera equipped with a processor for authentication of images produced from an image file taken by the digital camera is provided. The digital camera processor has embedded therein a private key unique to it, and the camera housing has a public key that is so uniquely related to the private...http://www.google.ca/patents/US5499294?utm_source=gb-gplus-sharePatent US5499294 - Digital camera with apparatus for authentication of images produced from an image file
