ARTUR VALIULIN. Architecture of The PRIVATGRAM Secure Corporate Messenger for Critical Infrastructure Based on X3DH And Double Ratchet Protocols. The American Journal of Engineering and Technology, [S. l.], v. 8, n. 05, p. 159–164, 2026. DOI: 10.37547/tajet/Volume08Issue05-15. Disponível em: https://www.theamericanjournals.com/index.php/tajet/article/view/8077. Acesso em: 20 jun. 2026.