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Secure key-exchange protocol with an absence of injective functions | | R Mislovaty
; Y Perchenok
; I Kanter
; W Kinzel
; | | Date: |
30 Nov 2002 | | Journal: | Phys Rev E, 66 (6 Pt 2), 066102 | | Abstract: | The security of neural cryptography is investigated. A key-exchange protocol over a public channel is studied where the parties exchanging secret messages use multilayer neural networks which are trained by their mutual output bits and synchronize to a time dependent secret key. The weights of the networks have integer values between +/-L. Recently an algorithm for an eavesdropper which could break the key was introduced by [A. Shamir, A. Mityagin, and A. Klimov, Ramp Session (Eurocrypt, Amsterdam, 2002)]. We show that the synchronization time increases with L2 while the probability to find a successful attacker decreases exponentially with L. Hence for large L we find a secure key-exchange protocol which depends neither on number theory nor on injective trapdoor functions used in conventional cryptography. | | Source: | PubMed, pmid12513342 | | Services: | Forum | Review | Favorites | |
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