An Introduction to Block Cipher Algorithms and Their Applications in Communication Security

Contributed by Anonymous

“The price of freedom is eternal vigilance.” [3] Thomas Jefferson said that in the early 1800’s and it still applies today as much as it applied back then. The rapidly growing need for an “unbreakable” or end-all of all encryption algorithms has been sought after since 1900 BC when the art of Cryptography was first developed. So far, that search has been in vain. There has yet to be an algorithm that is considered unbreakable. However, an algorithm is considered to be secure as long as there has not been found vulnerability through cryptanalysis.

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