@book{31919,
	author = {Sehgal, Umesh, and Kaur, Kuljeet,},
	title = {Network security and cryptography / },
	publisher = {S.K. Kataria & Sons,},
	year = {2009 ; Reprint 2022.},
	address = {New Delhi, India :},
	edition = {First edition.}
}