Books — cryptography
RU

Theoretical Foundations of Computer Science. A Textbook for Universities
AБ. Е. Стариченко
OtherRU

Information Security Methods. Passwords, Steganography, Encryption
BС. Н. Никифоров
Cybersecurity
Б. Е. Стариченко
Other
С. Н. Никифоров
Cybersecurity