Volume 2 - Issue 3 – 4
Lattice Forward-Secure Identity Based Encryption Scheme
- Kunwar Singh
Computer Science and Engineering Department, NIT Trichy, Tiruchirappalli, India
kunwar@nitt.edu
- C. Pandurangan
Computer Science and Engineering Department, IIT Madras, India
rangan@cse.iitm.ac.in
- A.K.Banerjee
Mathematics Department, NIT Trichy, Tiruchirappalli, India
banerjee@nitt.edu
Keywords: attice, identity based encryption, forward security, random oracle model, learning with error (LWE).
Abstract
Protecting secret keys is crucial for cryptography. There are some relatively insecure devices (smart
cards, mobile phones etc.) which have threat of key exposure. The goal of the forward security is to
protect security of past uses of key even if the current secret key is exposed. In this paper we propose
lattice based forward-secure identity based encryption scheme based on LWE assumption in random
oracle model. We also propose lattice based forward-secure identity based encryption scheme in the
standard model.