Achieving High Security for Image Data
Image Security Technologies
Canon has developed technologies that provide high security protection for photographic data captured by digital cameras. This technology has garnered considerable attention in the insurance industry, where the reliability of photographs plays a critical role, as well as in industries requiring high security, such as the news media, product development, and others.
Original Image Verification Technology
Image data captured by digital cameras can be easily falsified. Original Image Verification System is a technology that facilitates the detection of such falsifications. Signature data "a" created by arithmetic processing using a MAC (Message Authentication Code) secret key, is attached to the original data. During verification, if signature data "b," recreated from the image data through the same process described above, does not agree with signature data "a" of the original data, then the image data has been falsified.
Overview of Original Image Verification Technology
Image Encryption Technology
This technology prevents illegal copying by encrypting image data captured by digital cameras. A dedicated IC card containing a secret key is inserted into the camera to encrypt the image data. Upon successful authentication between the camera and IC card, the secret key stored in the IC card is sent to the camera to encrypt the image data. The encrypted image data can only be viewed or reproduced by a user possessing the IC card as well as a password. The world saw the first use of this technology with its incorporation into the EOS-1D Mark III digital SLR camera.
Overview of Image Encryption Technology
