Encryption EXIF Metadata for Protection Photographic Image of Copyright Piracy
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Many photographic images that are published to particular interests. This makes it more and more copyright piracy of images. In this study will make a tools and methods that can be used to protect the copyright of the digital image. The most important part of the digital image is a color image composition or texture images and EXIF metadata information contained therein. Image color and texture of the image reflects the beauty of the digital image. While reflecting the EXIF data information from digital image. In the science of cryptography many common cryptographic algorithms to secure data or information from copyright piracy. One of them is the eXtended Tiny Encryption Algorithm (XTEA) which is a cryptographic technique and operates in 64-bit block size and a 128bit key length. EXIF metadata in encrypted with XTEA, then insert it into End of File image, and delete the original EXIF, is expected to secure a digital image of the copyright piracy without changing primary data image. From the results of the encryption-decryption process, EXIF information and pixel digital image can be protected. There is a shrinkage of the size of the file capacity of -25.15% from size of original image, because image have a change in the type of EXIF metadata to JFIF format. This change only in bits header image, so that 74.85% of primary data bits are not changed.
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