Title :
Multimedia asymmetric watermarking and encryption
Author :
Boato, G. ; Conci, N. ; Conotter, V. ; De Natale, Francesco G. B. ; Fontanari, C.
Author_Institution :
Dept. of Inf. Eng. & Comput. Sci., Trento Univ., Trento
Abstract :
An asymmetric watermarking algorithm is presented, involving a private key for embedding and a public key for detection, joint with a suitable encryption scheme, thus achieving a double security level for digital data protection. A commutative scheme is designed based on linear algebra and on a secret random permutation, allowing both to cipher watermarked data and to mark encrypted data without interfering with the watermark detection process.
Keywords :
linear algebra; multimedia systems; private key cryptography; public key cryptography; watermarking; asymmetric watermarking; digital data protection; double security; encryption; linear algebra; multimedia; private key; public key; secret random permutation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080492
