Timed-Release Encryption With Master Time Bound Key

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.


Published in:
[Proceedings of the WISA 2019]
Presented at:
WISA 2019 - The 20th World Conference on Information Security Applications, Jeju Island, Korea, August 21-24, 2019
Year:
2019
Keywords:
Note:
WISA 2019 proceedings will be published in Springer LNCS (Lecture Notes in Computer Science).
Laboratories:




 Record created 2019-09-06, last modified 2019-09-09

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