Enkripcija — разлика између измена

Svi sistemi enkripcije imaju u svojoj osnovi sledeće zajedničke elemente:<ref>{{Cite web

* Robert A. Burgelman, Claiyton M. Christensen, Steven C. Wheelwright, Strategic management of technology and inovation, 4th Edition (2004,. pp. 398)

* Helen Fouché Gaines, “Cryptanalysis”, Dover. {{page|year=1939. ISBN |isbn=978-0-486-20097-2.|pages=}}

* David Kahn. ''The Codebreakers - The Story of Secret Writing''. {{page|year=1967. ISBN |isbn=978-0-684-83130-5.|pages=}}

* {{Cite book |authorref=Abraham harv|last=Sinkov|first=Abraham|title=Elementary Cryptanalysis: A Mathematical Approach|location=|publisher=Mathematical Association of America|year=1966|isbn=978-0-88385-622-2|pages=}}