الفهرس 
Cryptography at the molecular levelOnly 14 pages are availabe for public view
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Abstract
Acknowledgements
First and foremost, Great thanks to Allah for giving me patience, strength , and the ability to complete this work. Then, I’d like to express gratitude to my supervisor, Prof. Ihab.A.Ali, for his continuous encouragement, advice, and knowledge during my research. I wish to express my sincere gratitude to Dr. Tamer Barakat for his support, motivation, and guidance. The success of my efforts is due to his advice and encouragement. I deeply thank Dr. Mohamed Hamdi for his help throughout this research.
Special gratitude must be offered to Dr. Fatty Ahmed Salem, and to Prof. Amr Mohamed Refaat Gody for their acceptance, to referee my thesis.
I expand my thanks and sincere gratitude to my family, for their continuous support throughout the study years. I am very grateful to my mother for being in my life, she is the first motivation to continue my study, and I cannot reward her no matter what I do. I would also like to introduce my sincere thanks to my husband for his help and support to overcome the difficulties that have faced me in this work. I can’t forget my lovely kids Ahmed and Mahmoud who light my life; I wish to accomplish my dreams with them.
Finally, I thank my friends for their ever-lasting love and support.