الفهرس 
CHAPTER 1: INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Quantum information processing has great deal of attention from both engineers and quantum scientists. It is a discipline devoted to the development of novel quantum algorithms for storing, processing, and retrieving visual information. There is now a general agreement that quantum information science will lead to the creation of a quantum computer to solve problems that could not be efficiently solved on the traditional computer. In recent years, Intensive research efforts are underway around the world to investigate a number of technologies such as quantum communications, quantum cryptography, and quantum steganography, among many others, that could lead to more powerful quantum computers in the near future.
Steganography is the technical method of hiding sensitive or secret information by embedding it in a large innocent message. Quantum steganography can be defined as the quantum vision of classical steganography. The key difference between quantum and classical steganography is a security matter. As an alternative method for privacy protection, quantum steganography employs quantum mechanical effects, including quantum communication and quantum computation, to achieve quantum or classical information hiding tasks. The security of quantum communication has been guaranteed by the quantum no-cloning principle and quantum uncertainty principle to prevent the unconditional attack of eavesdroppers. The technique of eavesdroppers is only based on the laws of quantum mechanics.
Quantum steganography is the most important sub-discipline of quantum information hiding, which can be used to transmit quantum or classical messages under the cover of normal quantum communication. In the earlier works, there is no prior quantum steganography protocol verifying the security of whole embedded secret message. In addition, there is no previous quantum image steganography scheme to embed quantum text or quantum gray image into a quantum cover image. This thesis mainly focuses on designing quantum steganography protocol based on hash function to verify the security of whole embedded secret message. Moreover, quantum image steganography approaches are proposed to embed quantum text or quantum gray image into a quantum image. The simulation results and analyses demonstrate that the proposed approaches have high efficiency and high security compared to the competitive approaches.