Welcome to the resource topic for 2019/904
Title:
Timed-Release Encryption With Master Time Bound Key (Full Version)
Authors: Gwangbae Choi, Serge Vaudenay
Abstract:Timed-release encryption allows senders to send a message to a receiver which cannot decrypt until a server releases a time bound key at the release time. The release time usually supposed to be known to the receiver, the ciphertext therefore cannot be decrypted if the release time is lost. We solve this problem in this paper by having a master time bound key which can replace the time bound key of any release time. We first present security models of the timed-release encryption with master time bound key. We present a provably secure construction based on the Weil pairing.
ePrint: https://eprint.iacr.org/2019/904
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