MTProto 2.0 is a suite of cryptographic protocols for instant messaging at
the core of the popular Telegram messenger application. In this paper we
analyse MTProto 2.0 using the symbolic verifier ProVerif. We provide fully
automated proofs of the soundness of MTProto 2.0’s authentication, normal chat,
end-to-end encrypted chat, and rekeying mechanisms with respect to several
security properties, including authentication, integrity, secrecy and perfect
forward secrecy; at the same time, we discover that the rekeying protocol is
vulnerable to an unknown key-share (UKS) attack. We proceed in an incremental
way: each protocol is examined in isolation, relying only on the guarantees
provided by the previous ones and the robustness of the basic cryptographic
primitives. Our research proves the formal correctness of MTProto 2.0 w.r.t.
most relevant security properties, and it can serve as a reference for
implementation and analysis of clients and servers.

360 Mobile Vision - North & South Carolina Security products and Systems Installations for Commercial and Residential - $55 Hourly Rate. ACCESS CONTROL, INTRUSION ALARM, ACCESS CONTROLLED GATES, INTERCOMS AND CCTV INSTALL OR REPAIR 360 Mobile Vision - is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

By admin