The book "Cryptographic means of information protection in 2 hours . H. 1" by T. G. Krupenkova is a fascinating and deep immersion in the world of cryptography, which will become an indispensable resource for students, information security specialists and anyone interested in data protection. In the first part of this two-volume edition, the author examines in detail the basic principles and methods of cryptographic protection, revealing their significance in the modern digital society. Cryptography, as a science of encryption and data protection, plays a key role in ensuring data security in the era of the Internet and digital technologies. Krupenkov, with a wealth of experience and deep knowledge, offers the reader not only theoretical foundations, but also practical aspects of the use of cryptographic tools. It explains how various encryption algorithms work, what authentication methods exist, and how information can be protected from unauthorized access. The reader will be able to learn about current topics such as symmetric and asymmetric encryption, digital signatures and certificates, as well as modern security standards. This book will be of particular interest to students and graduate students of technical specialties, as well as professionals in the field of information technology and cybersecurity . If you are fond of programming, network technologies or just want to better understand how to protect your data on the Internet, “Cryptographic means of information protection” will be a real discovery for you. Krupenkov uses an accessible and understandable language, which makes complex concepts easier to understand. The topics raised in the book are more relevant than ever. In the face of constant threats of cyber attacks and data leaks, knowledge of the basics of cryptography becomes necessary for everyone who works with information. Krupenkov emphasizes the importance of protecting personal and corporate information, which makes his work especially valuable for businessmen and managers seeking to ensure the security of their companies. The author’s style is distinguished by clarity and logical presentation . He masterfully combines theory with practical examples, which allows the reader not only to assimilate the material, but also to apply it in practice. Krupenkov is a well-known specialist in the field of information security, and his previous work has also received recognition among professionals. His books and articles are often used in educational institutions and in advanced training courses. If you are looking for literature on topics such as “data protection”, “information security”, “encryption”, “cryptography for beginners” or “information protection methods”, then “Cryptographic information protection tools in 2 h. H. 1" will be a great choice for you. This book will not only expand your knowledge, but also help you better navigate the modern world of technology, where information is the new currency. In conclusion, “Cryptographic means of information protection at 2 h. H. 1" is not just a textbook, but a real find for anyone who wants to deepen their knowledge in the field of information protection T. G. Krupenkov offers readers a unique opportunity to learn about the best practices and technologies that will help protect data in a rapidly changing digital world. Do not miss the opportunity to become an expert in this important and relevant field!