This textbook provides a piece of adequate information about cryptographic methods, which are of paramount significance for the cyberspace world. It involves the state-of-the-art cryptographic algorithms that are either being used commercially or become standard. This book is about building the influential concept of the learners to identify the significance of those cryptographic algorithms. It is highly useful in conducting the hands of experience. This book is designed for a wide range of individuals who are highly intrigued to improve their knowledge as a cybersecurity professional.