A threshold key escrow scheme based on public key cryptosystem

摘要

In Key escrow field it is important to solve the problem that user's secret key completely depends on the trusted escrow agency. In 1995, some methods of solving the problem were present- ed. But these methods are no better than that of directly using threshold cryptography. In this paper, we present a common pattern of threshold key escrow scheme based on pulic key cryptosystem, and a detailed design based on the improved RSA algorithm is given. The above problem is solved by this scheme.