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首頁> 外文會(huì)議>Cryptographic Hardware and Embedded Systems-CHES 2008 >Exploiting the Power of GPUs for Asymmetric Cryptography
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Exploiting the Power of GPUs for Asymmetric Cryptography

機(jī)譯：利用GPU的非對稱密碼功能

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Modern Graphics Processing Units (GPU) have reached a dimension with respect to performance and gate count exceeding conventional Central Processing Units (CPU) by far. Many modern computer systems include - beside a CPU - such a powerful GPU which runs idle most of the time and might be used as cheap and instantly available co-processor for general purpose applications. In this contribution, we focus on the efficient realisation of the computationally expensive operations in asymmetric cryptosystems on such off-the-shelf GPUs. More precisely, we present improved and novel implementations employing GPUs as accelerator for RSA and DSA cryptosystems as well as for Elliptic Curve Cryptography (ECC). Using a recent Nvidia 8800GTS graphics card, we are able to compute 813 modular exponentiations per second for RSA or DSA-based systems with 1024 bit integers. Moreover, our design for ECC over the prime field P-224 even achieves the throughput of 1412 point multiplications per second.
機(jī)譯：在性能和門數(shù)方面，現(xiàn)代圖形處理單元（GPU）的規(guī)模已經(jīng)遠(yuǎn)遠(yuǎn)超過了傳統(tǒng)的中央處理單元（CPU）。許多現(xiàn)代計(jì)算機(jī)系統(tǒng)（除了CPU之外）還包括這樣一個(gè)功能強(qiáng)大的GPU，該GPU在大多數(shù)時(shí)間都處于空閑狀態(tài)，可以用作通用應(yīng)用程序的廉價(jià)且即時(shí)可用的協(xié)處理器。在這一貢獻(xiàn)中，我們著重于在這種現(xiàn)成的GPU上非對稱密碼系統(tǒng)中高效實(shí)現(xiàn)計(jì)算上昂貴的操作。更準(zhǔn)確地說，我們提出了采用GPU作為RSA和DSA密碼系統(tǒng)以及橢圓曲線密碼術(shù)（ECC）的加速器的改進(jìn)且新穎的實(shí)現(xiàn)。使用最新的Nvidia 8800GTS圖形卡，對于具有1024位整數(shù)的基于RSA或DSA的系統(tǒng)，我們能夠每秒計(jì)算813個(gè)模塊化指數(shù)。此外，我們針對素場P-224的ECC設(shè)計(jì)甚至實(shí)現(xiàn)了每秒1412點(diǎn)乘法的吞吐量。

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