Public key diversification method

Details Public key diversification method Public key diversification method

H - Electricity

04

L

354/67, 340/70

H04L 9/30 (2006.01)

Patent

CA 1321835

PUBLIC KEY DIVERSIFICATION METHOD Abstract A method is disclosed whereby individual members of a group of members or entities may be provided, under the control of a trusted member, referred to as the parent, with respective individual secret keys for use in public key cryptography, such that the matching public key can be readily derived, and group membership authenticated. The parent initially establishes a public key (e,N) where N = P?Q is the product of two primes. In response to a request from a group member, the parent selects two further primes R,S and communicates two values dependent thereon to the requesting member, which selects two more primes T and U for use in conjunction with the received values to establish the member's secret key.

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