• Journal of the Korea Institute of Information Security & Cryptology
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• v.11 no.1
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• pp.25-33
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• 2001

In 1998, A. Young and M. Yung introduced the concept of ARC that conjugates functionalities of a typical PKI with the ability to escrow privte keys of the system users. Also in 1999, P. Paillier and M. Yung proposed a new notion - called SE-PKI -which presents other additional advantages beyond ARC. But SE-PKI system uses only one escrow agent. The storage of users secret information at a single agent can make it significant point of attack and arouse controversy about invasion of privacy. This paper presents SE-PKI key recovery system that multiple escrow agents can participate in it. Also, in our system, escrow agents can\`t recover user\`s ciphertext.