Transposition ciphers

Objectives of Chapter 3: To define the terms and the concepts of symmetric key ciphers; to emphasize the two categories of traditional ciphers: substitution and transposition ciphers; to describe the categories of cryptanalysis used to break the symmetric ciphers.

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Objectives of Chapter 6: To review a short history of DES; to define the basic structure of DES; to describe the details of building elements of DES; to describe the round keys generation process; to analyze DES.

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Objectives of Chapter 7: To review a short history of AES; to define the basic structure of AES; to define the transformations used by AES; to define the key expansion process; to discuss different implementations.

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