"Encryption, or the art of writing in cipher" - this book opens to the reader the exciting world of cryptography - the science of encryption and decryption of messages. Author Pierre-Louis Jacob examines the history of cryptography, the various methods of encryption, the differences between ciphers, and the importance of this science in today's world. The book "Cryptography, or the art of writing in a cipher" will be a valuable guide for those who are interested in the secrets of ciphers and who will find excitement in the study of cryptography.