An ideal lattice based IBE scheme in the standard model |
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| Authors: | Xiaoyuan Yang Liqiang Wu Minqing Zhang Ping Wei Lixian Wei |
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| Institution: | YANG Xiaoyuan1,WU Liqiang2,ZHANG Minqing1,WEI Ping2,WEI Lixian1 1.The Institute of Information Security,Engineering College of Chinese Armed Police Force,Xi'an 710086,Shaanxi,China,2.Key Laboratory of Network & Information Security |
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| Abstract: | Under the standard model,an IND-sID-CPA secure IBE (Identity Based Encryption) scheme is proposed,which is based on an improved trapdoor generation function over ring and decisional R-LWE (ring-learning with errors) assumption,thus the hardness of recovering system master key can be reduced to solve the Ideal-SIS (small integer solution) problem,and the attack to the ciphertext is equivalent to solving the SVP (the shortest vector problem) in the worst case on ideal lattice to within a fixed poly(n) factor.... |
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| Keywords: | IBE provable security ideal lattice R-LWE |
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