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Security Analysis of the NTRUEncrypt Public Key Encryption Scheme

Sakshaug, Halvor
Master thesis
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URI
http://hdl.handle.net/11250/258846
Date
2007
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  • Institutt for matematiske fag [2686]
Abstract
The public key cryptosystem NTRUEncrypt is analyzed with a main focus on lattice based attacks. We give a brief overview of NTRUEncrypt and the padding scheme NAEP. We propose NTRU-KEM, a key encapsulation method using NTRU, and prove it secure. We briefly cover some non-lattice based attacks but most attention is given to lattice attacks on NTRUEncrypt. Different lattice reduction techniques, alterations to the NTRUEncrypt lattice and breaking times for optimized lattices are studied.
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Institutt for matematiske fag

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