Abstract
Puncturable encryption can achieve forward secrecy by puncturing the secret key after each decryption operation, such that a given ciphertext can only be decrypted once, and it has many practical applications such as asynchronous messaging transport systems, forward-secret zero round-trip time (0-RTT) protocol, and public-key watermarking schemes. In this paper, we present a generic construction that converts any existing chosen-ciphertext secure identity-based encryption scheme into a puncturable encryption scheme. The security proof of our construction can be derived from the underlying identity-based encryption scheme employing the same assumptions. Furthermore, we present an instantiation of the proposed generic construction. In comparison with previous schemes, our construction of puncturable encryption is efficient, in particular, a puncturing operation only involves a small number of very efficient computations, plus the deletion of certain parts of the secret key.
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.
