A Note on Secure Key Issuing in ID-based Cryptography
نویسندگان
چکیده
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.
منابع مشابه
Secure Key Issuing in ID-based Cryptography
ID-based cryptosystems have many advantages over PKI based cryptosystems in key distribution, but they also have an inherent drawback of key escrow problem, i.e. users’ private keys are known to the key generation center (KGC). Therefore secure key issuing (SKI) is an important issue in ID-based cryptography. In multiple authority approach (Boneh & Franklin 2001, Chen et al. 2002), key generati...
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عنوان ژورنال:
- IACR Cryptology ePrint Archive
دوره 2005 شماره
صفحات -
تاریخ انتشار 2005