Part I: INTRODUCTION TO SYMMETRIC CRYPTOGRAPHY Module 1 First Considerations Module 2 Plaintext Module 3 Digitization of Plaintext Module 4 Toward a Cryptographic Paradigm Module 5 What We Want from the Keytext Module 6 Randomness I Module 7 Finite State Sequential Machines Module 8 m-sequences Module 9 The Paradigm Attempted Module 10 The Block Cipher Function - A Modern Ke…