ABSTRACT
This chapter provides an introduction to the area of modern digital media fingerprinting and discusses symmetric fingerprinting as well as fingerprinting in a broadcast channel environment, which involves sending one encrypted copy of the multimedia to several end users, where symmetric fingerprinting at decryption takes place. It presents a formal presentation of symmetric fingerprinting as well as fingerprinting in a broadcast channel environment. The problem of digital fingerprinting consists of many components that can be formulated separately. A digital watermark is an imperceptible mark, such as a logo, that is embedded into multimedia. The fingerprinting schemes discussed are known as symmetric fingerprinting. Symmetric fingerprinting can also be classified by where in the content distribution chain the fingerprint is embedded. The chapter concludes with some novel insights into the use of chameleonlike ciphers for bandwidth efficient combined media decryption and fingerprinting.
