Lattice Based Forward-Secure Identity Based Encryption Scheme with Shorter Ciphertext
نویسندگان
چکیده
In MIST 2012 conference Singh et al [21] presented lattice based forward-secure identity based encryption schemes based on LWE assumption in the random oracle model as well as in the standard model. In this paper we propose lattice based forward-secure identity based encryption scheme with shorter ciphertext in the random oracle model. We have reduced size of the ciphertext C from (m(i+ 2)+ 1)×‖Zq‖ to (m+ 1)×‖Zq‖ where ‖Zq‖ is number of bits required to represent an element of Zq.
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عنوان ژورنال:
- J. Internet Serv. Inf. Secur.
دوره 3 شماره
صفحات -
تاریخ انتشار 2013