@book{4568,
	author = {Forouzan, Behrouz A., and Mukhopadhyay, Debdeep,},
	title = {Cryptography and network security},
	publisher = {Tata Mcgraw hill Education Pvt. Ltd.,},
	year = {2011.},
	address = {New Delhi:},
	edition = {2nd.}
}