Using the APA writing style, write a 23 page paper that answers the questions below. Be prepared to fully support your answers. Explain in your own words the following:

What is the history of DES, and why is s-DES studied?

How does DES and 3DES work? Provide an example of each.

Explain the following ingredients that decide the algorithm in the Fiestel cipher:

Block size Key size

Subkey generation

Round function

Fast software encryption/decryption

Ease of Analysis