Conclusions

Abstract

In this book, the fundamentals of cryptography are discussed. It provides a comprehensive study of the three critical aspects of security: confidentiality, integrity, and authentication. As it is known, cryptography plays a vital and critical role in achieving the primary aims of security goals, such as authentication, integrity, confidentiality, and no-repudiation. Cryptographic algorithms are developed in order to achieve these goals as discussed during this book. Moreover, this book discusses the fundamentals of private and public key cryptography. Moreover, it explains the details of the main building blocks of these cryptographic systems. Besides, this chapter explores the different crypto-analysis techniques. It addresses stream ciphers, DES and 3DES, AES, block ciphers, the RSA cryptosystem, and public key cryptosystems based on the discrete logarithm problem, ECC, key exchange algorithms, and so many other algorithms. Moreover, this chapter provides a comparison between different encryption algorithms in terms of speed encryption, decoding, complexity, the length of the key, structure, and flexibility. This book explores different cryptography concepts such as authentication, integrity, availability, access control, and non-repudiation. It presents concepts of digital signatures, hash functions, and MACs. Finally, this book discusses the cutting-edge cryptographic techniques such as quantum cryptography, DNA cryptography, chaotic cryptography, lightweight cryptography, and blockchain cryptography. All these cryptography techniques are promising and rapid emerging fields in data security.