This chapter covers the following topics:
• Functions of Cryptography: You should understand the functions of cryptography because it can be used to provide confidentiality, integrity, authenticity, and nonrepudiation. For example, symmetric encryption can provide confidentiality, hashing can provide integrity, and digital signatures can provide authenticity, integrity, and nonrepudiation.
• History of Cryptography: Knowing the history of cryptographic solutions can help you understand its role in our world today. Throughout time, people have wanted to protect information. Systems such as Caesar’s cipher, Enigma, and One-Time Pads were developed to protect sensitive information.
• Algorithms: You ...