Abstract
Abstract Oblivious transfer (OT) is an important primitive used in many cryptographic protocols. According to the traditional OT’s security requirements, the privacy of the receiver is protected forever, which, however, limits the applications of OT in some areas. In this paper, we propose a new OT with timed-release receiver’s privacy in which the sender has N messages, of which the receiver can choose to receive one or more, in such a way that (a) the receiver only learns about the requested messages, and (b) the sender learns the receiver’s selections after a designated time. Thus the receiver’s privacy is just protected within a period of time. Besides, we also present a concrete scheme combining Tzeng’s OT scheme with Casassa Mont et al.’s timed-release encryption scheme.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
