| 摘要 |
<p>A method and system for generating asymmetric crypto-keys usable by network (10) users to transform messages is provided. The system includes a first network station associated with a user (30), a second network station associated with a trusted entity (60), and a third network station associated with a sponsor (50). The trusted entity (60) authorizes the sponsor (50) to generate symmetric crypto-key and associated user identification. The sponsor (50) both stores the generated symmetric crypto-key and the associated user identification and transmits the symmetric crypto-key and user identification to the trusted entity (60). The trusted entity (50) then distributes the symmetric crypto-key and user identification to the user (30). The user (30) then presents the user identification to the sponsor (50). The sponsor (50) then generates a challenge to the user (30). The user (30) then further transforms the challenge and transmits the further transformed challenge back to the sponsor (50). In response to receipt of the further transformed challenge, the sponsor (50) then generates the asymmetric crypto-key.</p> |
