Title	An Efficient and Secure Web-Based Dual Watermarking Scheme
Author	Nidal F. Shilbayeh, Sameer A. Nooh, Reem A. Al-Saidi
Citation	Vol. 19  No. 6  pp. 149-157
Keywords	Copyright protection public key infrastructure dual watermarking protocol authentication web-based security public key cryptosystem Digital to Analog (DTA) Analog to Digital (ATD).

Title	A Novel Reversible Watermarking Scheme based on SHA3 for Copyright Protection and Integrity of Satellite Imagery
Author	Alavi Kunhu, Saeed Al Mansoori and Hussain Al-Ahmad
Citation	Vol. 19  No. 3  pp. 92-102
Keywords	Reversible watermarking, Satellite images, SHA3, Hash function

Title	Audio Watermarking by Hybridization of DWT-DCT
Author	Ghulam Ali, Muhammad Tahir Mumtaz, Inam Ul Haq, Zia Ul Rehman, Nazir Ahmad, Zunaira Saleem, Sohail Iqbal, Khurshid Asghar, Muhammad Tayyab Mumtaz
Citation	Vol. 17  No. 8  pp. 19-27
Keywords	Audio watermarking, Discrete Wavelet Transform, Discrete Cosine Transform, Human Auditory System, Human Visual System, Adding White Gaussian Noise.

Title	Audio Zero-Watermarking Based on Discrete Hartley Transform and Non-Negative Matrix Factorization
Author	Pranab Kumar Dhar, Emtiaj Hasan, and Tetsuya Shimamura
Citation	Vol. 17  No. 8  pp. 11-18
Keywords	Copyright protection Discrete Hartley transform Non-negative matrix factorization Zero watermarking