Global Patent Index - EP 2243247 A1

EP 2243247 A1 20101027 - METHOD FOR EXCHANGING KEYS BY INDEXATION IN A MULTIPATH NETWORK

Title (en)

METHOD FOR EXCHANGING KEYS BY INDEXATION IN A MULTIPATH NETWORK

Title (de)

VERFAHREN ZUM AUSTAUSCH VON SCHLÜSSELN DURCH INDEXIERUNG IN EINEM MEHRWEGENETZWERK

Title (fr)

PROCEDE POUR ECHANGER DES CLES PAR INDEXATION DANS UN RESEAU MULTI CHEMIN

Publication

EP 2243247 A1 20101027 (FR)

Application

EP 08861893 A 20081218

Priority

  • EP 2008067923 W 20081218
  • FR 0708837 A 20071218

Abstract (en)

[origin: WO2009077598A1] Method making it possible to generate encryption keys and to exchange the parameters making it possible to generate said keys in a network comprising n entities X wishing to exchange data, characterized in that it comprises at least the following steps: o the n entities elect a common generator of arrays (G M (?)), o at least one of the entities X communicates these values (? i) via several different routing paths Ci, plus a reference random number N x, N y, o each entity X, Y generates an array T s, o each entity X, Y composes a secret key on the basis of the array (T s) generated and on the basis of several values indexed by several pairs ((i, j),(k,l);...;(o, p)) of said array so as to create its secret value, o the encrypted random number of a first entity X is returned to a second entity Y, one of the n entities X, Y at least compares the consistency of the two values N x after decryption with its own key Kxs.

IPC 8 full level

H04L 9/08 (2006.01)

CPC (source: EP US)

H04L 9/0844 (2013.01 - EP US)

Citation (search report)

See references of WO 2009077598A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

FR 2925244 A1 20090619; FR 2925244 B1 20100226; EP 2243247 A1 20101027; US 2011211701 A1 20110901; WO 2009077598 A1 20090625

DOCDB simple family (application)

FR 0708837 A 20071218; EP 08861893 A 20081218; EP 2008067923 W 20081218; US 80952708 A 20081218