2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93497This paper has been withdrawn: it does not evade the no-go results of Mayers, Lo and Chau, to whom I am most grateful for helpful correspondences.This paper was withdrawn on 19.11.97. The protocol described does not evade the no-go results of Mayers, Lo and Chau, to whom I am most grateful for helpful correspondencesQuantum Physicstext