The interlock protocol cannot save quantum cryptography from man-in-the-middle attacks
Karl Svozil · arXiv (Cornell University) · 2005
The feasibility of the interlock protocol to prevent against man-in-the-middle attacks on quantum cryptography is discussed. If an eavesdropper succeeds to compromise the quantum as well as the classical channels and mimicks the receiver "Bob" for the sender "Alice" and vice versa, one defense strategy not requiring authentication is the successive, temporally interlocked partial transmission of the entire encrypted message.