CryptoGraphics Secret Key Cryptography Using Graphics Cards

Short Description
B. Schneier, Applied Cryptography, 2nd edition, John Wiley and Sons, New York, 1996. 27. C. Thompson, S. Hahn and M. Oskin, Using Modern Graphics …

Website: www1.cs.columbia.edu | Filesize: 129kb

Content
CryptoGraphics: Secret Key Cryptography Using
Graphics Cards
Debra L. Cook1, John Ioannidis1, Angelos D. Keromytis1, Jake Luck2
1 Department of Computer Science, Columbia University, New York, NY, USA
fdcook,ji,angelosg@cs.columbia.edu
2 10K Interactive
jake301@10k.org
Abstract. We study the feasibility of using Graphics Processing Units (GPUs)
for cryptographic processing, by exploiting the ability for GPUs to simultaneously
process large quantities of pixels, to offload symmetric key encryption from
the main processor. We demonstrate the use of GPUs for applying the key stream
when using stream ciphers.We also investigate the use of GPUs for block ciphers,
discuss operations that make certain ciphers unsuitable for use with a GPU, and
compare the performance of an OpenGL-based implementation of AES with implementations
utilizing general CPUs. While we conclude that existing symmetric
key ciphers are not suitable for implementation within a GPU given present
APIs, we discuss the applicability of moving encryption and decryption into the
GPU to image processing, including the handling of displays in thin-client applications
and streaming video, in scenarios in which it is desired to limit exposure
of the plaintext to…