Chapter

Topics in Cryptology - CT-RSA 2010

Volume 5985 of the series Lecture Notes in Computer Science pp 73-88

Speed Records for NTRU

  • Jens HermansAffiliated withLancaster UniversityESAT/SCD-COSIC and IBBT, Katholieke Universiteit Leuven
  • , Frederik VercauterenAffiliated withLancaster UniversityESAT/SCD-COSIC and IBBT, Katholieke Universiteit Leuven
  • , Bart PreneelAffiliated withLancaster UniversityESAT/SCD-COSIC and IBBT, Katholieke Universiteit Leuven

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Abstract

In this paper NTRUEncrypt is implemented for the first time on a GPU using the CUDA platform. As is shown, this operation lends itself perfectly for parallelization and performs extremely well compared to similar security levels for ECC and RSA giving speedups of around three to five orders of magnitude. The focus is on achieving a high throughput, in this case performing a large number of encryptions/decryptions in parallel. Using a modern GTX280 GPU a throughput of up to 200 000 encryptions per second can be reached at a security level of 256 bits. This gives a theoretical data throughput of 47.8 MB/s. Comparing this to a symmetric cipher (not a very common comparison), this is only around 20 times slower than a recent AES implementation on a GPU.

Keywords

NTRU encryption Graphical Processing Unit Parallelization CUDA