The book “Cryptographic means of information protection . In 2 h. H. 2" by H. N. Busnyuka is a deep and comprehensive study in the field of cryptography, which will be of particular interest to both specialists and those who are just beginning to get acquainted with this fascinating and complex topic. The second part of this work continues to reveal the key aspects of information security, delving into the technical details and modern approaches that make this book an indispensable tool for students, graduate students and practitioners in the field of information security. Cryptography is not just a set of mathematical methods, but a whole science that guards our digital security. Busniuk’s book examines various cryptographic algorithms, protocols and systems that are used to protect data in the modern world. The author shares his knowledge about symmetric and asymmetric encryption methods, digital signatures and hash functions, as well as analyzes their application in real-world scenarios. Readers will be able to learn about recent advances in cryptography, such as quantum cryptography, and how these technologies could change the approach to information security in the future. The book will be especially useful for technical students, graduate students, as well as professionals working in the field of information technology and security .. If you are interested in how to protect your data from unauthorized access or want to understand how modern encryption systems work, this book will be a real guide for you It will also be of interest to researchers working on new methods of information security, and anyone who wants to be aware of the latest trends in cryptography. The topics raised in the book cover not only technical aspects, but also philosophical issues related to security and privacy in the digital world. Busniuk addresses important ethics issues in cryptography, discussing how technology can be used for both good and harm. This makes the book relevant and important for understanding not only the technical details, but also the social consequences of using cryptographic tools. The author's style is distinguished by clarity and accessibility of presentation, which allows readers to easily assimilate complex concepts. N. N. Busniuk is an experienced specialist in the field of information security, and his work has already established itself as an authoritative source. Among his other well-known works are Cryptographic Protocols and Their Applications, where he also shares his knowledge and experience, making him one of the leading experts in the field. If you are looking for books on cryptography, information security or just want to expand your knowledge on data protection, "Cryptographic Information Protection Tools. In 2 h. H. 2" will be a great choice for you. This book will not only enrich your knowledge, but also help you understand how to ensure security in a world where information is increasingly vulnerable. Do not miss the opportunity to immerse yourself in the exciting world of cryptography and learn how to protect your data with the help of modern technologies!