Abstract
Secure key issuing is an important issue in identity- based cryptography. At present there are some key issuing protocols in ID-based cryptography, but existent protocols are not applied due to centerless, self-organization, free move and other distinct characteristics of ad hoc network. In this paper, we propose an identity-based key issuing protocol for ad hoc networks, in which it makes use of the blind signature to ensure the secure issuing of the private key of the nodes in public channel. None of the nodes can impersonate the users to obtain the private keys. And the protocol, which suits ad hoc networks, is secure against replay, man-in-the-middle and insider attacks.
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