A Novel Digital Content Protection Scheme Combining Iris Identity Based Digital Signature and Semi-fragile Watermark

A novel digital content protection algorithm combined iris biometric based digital signature and semi-fragile watermark is proposed. Iris-based PKI architecture is constructed to create digital signature, which has numerous advantages such as reduced cost of ownership, increased security, regulatory compliance, and flexibility. We use the iris biometric-based key string and an elliptic curve point embedding technique to create the public key and corresponding private key. The signed iris code is used as watermark to achieve the semi-fragile watermarking scheme. Our simulation shows that the proposed algorithm can effectively protect the digital content and has the advantages of security, creditability, and authenticity.