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A Note on Secure Key Issuing in ID-based Cryptography
Authors: XU Chunxiang, ZHOU Junhui, QIN ZhiguangAbstract:
Most recently, Lee B. et al proposed a key issuing protocol for ID-based cryptography to solve the key escrow problem. However in this letter, we show that a malicious key generation center (KGC) can successfully attack the protocol to obtain users¡¯ private keys. This means that in the protocol, the key escrow problem isn¡¯t really removed.
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