A Reliable Time Lock Encryption Scheme For Relatively Weak Computational Resources
Remyasree N1, Chungath Srinivasan2 

1Remyasree N., TIFAC-CORE in Cyber Security, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India.
2Chungath Srinivasan, TIFAC-CORE in Cyber Security, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India.

Manuscript received on 11 March 2019 | Revised Manuscript received on 16 March 2019 | Manuscript published on 30 July 2019 | PP: 893-897 | Volume-8 Issue-2, July 2019 | Retrieval Number: B1674078219/19©BEIESP | DOI: 10.35940/ijrte.B1674.078219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Time-lock encryption is a type of encryption in which the process is bound by a factor of time that enables previously impossible applications such as secure auctions, mortgage payment, key escrow, or fair multiparty computations. Existing solution approaches of time lock either employ computational overhead to calculate time or use analogues to map the real-world time, hence lacks reliability. We propose a reliable time-lock encryption scheme, where even receivers with relatively weak computational resources can decrypt the cipher after an accurate real-world deadline, without any interaction with the sender. Proposed solution uses time fetched from timeservers over secured https channel for time lock accuracy and strong AES-256 encryption/decryption techniques for reliability. The paper briefly discusses a java based prototype implementation of the proposed approach and the experimental results.
Index Terms: Time-Lock Encryption, Time-Release Cryptography, Time-Lapse Encryption.

Scope of the Article: Encryption Methods and Tools