Mr. D. Chattopadhyay obtained his B. Sc. Honours degree in Physics from the University of Burdwan in the year of 1994 and received National Scholarship from the Ministry of H.R.D., Govt. of India in 1996. He was awarded the M.Sc. degree in Physics in1997 from the University of Burdwan. In 1998, he completed his Bachelor’s degree in Education (B.Ed.) from the same University. From 1998 – 2000, he served as an Assistant Teacher in Physical Science in S.D.C. High School, Somrabazar. During 2000 – 2001, he took the responsibility of lecturer in Physics in Kalna College. In 2001, he joined as lecturer in M.B.C. Institute of Engineering & Technology, Burdwan. From 2002, he is attached to C.S.S.T. Academy, Chinsurah. In 2003, he participated in a research team (COMPASS Experiment) in CERN, Geneva. He is now pursuing his PhD in the field of Chaos-based Cryptography in N.I.T., Durgapur. He has published two journal papers and three conference papers on cryptography.