公开(公告)号：US20170295021A1

公开(公告)日：2017-10-12

申请号：US15480659

申请日：2017-04-06

Applicant: Telefonica, S.A.

Inventor： Pedro A. ARANDA GUTIÉRREZ ,  Diego R. LOPEZ ,  Norisy C. OREA BARRIOS

IPC: H04L9/32 ,  H04L12/833 ,  H04L9/06 ,  H04L12/801

CPC classification number: H04L9/3239 ,  H04L9/0637 ,  H04L9/14 ,  H04L9/3252 ,  H04L45/00 ,  H04L47/31 ,  H04L47/34 ,  H04L63/12 ,  H04L2209/38

Abstract: The method comprising, in a network based on a chain of individual Service Functions, SFs, that are composed to implement Network Services, NSs: assigning, at an ingress node of a network architecture, to at least one data packet received by said ingress node from the network, a unique cryptographic tag; processing said assigned unique cryptographic tag using a cryptographic function specific to each Service Function, SF; and verifying, at a given point of the network architecture, said processed unique cryptographic tag by applying a cryptographic verification function composed by the inverse functions of the cryptographic functions associated to the SFs traversed by the at least one data packet.