| 摘要 |
<p>A method for carrying out a key distribution process, whereby each member (Useri) who uses the services of a Certifying Authority (CA) is provided with a member's public key (PUi) and a member's private key (si), wherein said process is effected over a finite group of points comprising the steps of: (1) permitting said Certifying Authority to select a generating group-point (G); (2) to generate a random Certifying Authority private key (d); (3) to generate a Certifying Authority public key (PS) (PS=d*G); (4) permitting said member (Useri) to generate a first member's random value (xi) and calculate a first intermediate member's public key (xi*G); (6) permitting said Certifying Authority to calculate said member's public key (PUi) and member's intermediate private key (pi), wherein: a second member's random value (yi) is generated and a second intermediate member's public key (yi*G) is calculated, said member's public key (PUi) is calculated: PUi = xi*G + yi*G, a member's temporary value (H(IDi, PUi)) is calculated by operating with a hash transformation (H), said member's intermediate private key (pi) is calculated (pi=H(IDi, PUi)*d+yi); (7) permitting said member to generate said member's private key (si) (si=pi+xi).</p> |
