Modern Cryptography Applied Mathematics for Encryption and Information Security

Cryptography is an integral part of information security. Thus, the need to understand cryptography is substantial. The study of cryptography can be daunting, particularly for readers who do not have a rigorous mathematical background. It is often useful to begin with studying ancient ciphers. While these ciphers lack sufficient security to be useful today, they are effective at teaching the fundamental concepts of cryptography. These ancient ciphers still have a plaintext, an algorithm, and a key, used to produce the ciphertext. For this reason, ancient ciphers are an appropriate starting point for the study of cryptography.