KEY MATCHING PROTOCOL BASED ON ELLIPTIC CURVE ISOGENY Russian patent published in 2020 - IPC H04L9/08 H04L9/30 

FIELD: physics.

SUBSTANCE: invention relates to encryption, in particular, to preliminary distribution of keys for configuration of multiple network nodes with information of local keys. Said result is achieved by using at least first hash function (147) and second hash function (148) to digital identifier of network node. First and second hash functions map the digital identifier to the first open point (141; H₁(ID)) and the second open point (142; H₂(ID)) on the first elliptic curve (131) and the second elliptic curve (132). First and second secret isogenies (135) are applied to the first and second open points (141, 142) of the ellipsoidal curve in order to obtain the first closed point (151) of the elliptic curve and the second closed point (152) of the ellipsoidal curve, which form part of closed (155) material switches for network node (210).

EFFECT: technical result consists in improvement of cryptographic systems stability.

13 cl, 11 dwg