共查询到20条相似文献,搜索用时 187 毫秒
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描述了一种新型的高性能高能效SIMD乘法阵列的结构.该乘法阵列支持同时执行1个64位乘法,4个32位乘法或16个16位有符号/无符号乘法.通过修改乘法算法实现结构,提高了乘加单元的面积复用度,在较小的面积和性能开销下实现了上述功能.并引入了"溢出补偿技术"解决了复数矩阵乘法运算的判溢出问题.通过牺牲非关键路径上短位宽乘法性能,提高关键路径上高位宽乘法性能.所述结构与文献[1]中乘法簇结构相比,64位乘法延时减少3.65%,面积降低3.92%,功耗提高5.71%. 相似文献
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声光卷积数字乘法运算 总被引:1,自引:0,他引:1
光计算具有运算速度快、易并行操作、容量大等特点,如今越来越被人们所重视,并获得迅速发展。介绍了利用声光卷积器来实现声光数字乘法运算的实验结果。 相似文献
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视频乘法检波器ψ角延迟量发生机理 总被引:1,自引:1,他引:0
从无线电物理学的角度分析了视频乘法检波器延迟量ψ角的发生机理。有利于电视机整机生产厂和器件厂正确认识乘法检波器,从而正确补偿ψ角所造成的不良影响。 相似文献
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最小二乘法是线性规划中最基本的原理 ,具有相关关系的变量间的关系虽然是不确定的 ,但我们可以通过大量的试验找出其统计规律性 ,然后近似地用函数关系描述它们之间的关系。这时的函数关系称为回归函数 ,如果函数是线性的 ,则称之为线性回归函数。例如 :移动通信规划当中 ,年份与用户数之间的具体关系见表 1。散步图见图 1。表 1 年份与用户数间具体关系第 x年 (x) 1 2 3 4 5 6 7用户数 (万 ) 33 34.5 36.5 40 .5 44.5 4955.5·······图 1散步图及回归直线x(年 )765432103035404 55055(万 ) y 从散步图上可以形象地看出这两个变… 相似文献
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物理量之间的函数关系的确定在实际研究工作中有很重要的作用。目前我们用于曲线拟合的方法主要是三次多项式插值法,抛物线加权平均法,张力样条函数插值法等,但这些方法计算量大。本文结合最小二乘法的基本原理,利用最小二乘方法进行曲线拟合,计算过程简便。首先介绍了最小二乘法拟合的基本原理,然后介绍了用Matlab实现曲线拟合以得到函数关系的方法和步骤,最后举例详细介绍了该方法的应用。 相似文献
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Optimized FPGA-based elliptic curve cryptography processor for high-speed applications 总被引:1,自引:0,他引:1
Kimmo JärvinenAuthor vitae 《Integration, the VLSI Journal》2011,44(4):270-279
In this paper, we introduce an FPGA-based processor for elliptic curve cryptography on Koblitz curves. The processor targets specifically to applications requiring very high speed. The processor is optimized for performing scalar multiplications, which are the basic operations of every elliptic curve cryptosystem, only on one specific Koblitz curve; the support for other curves is achieved by reconfiguring the FPGA. We combine efficient methods from various recent papers into a very efficient processor architecture. The processor includes carefully designed processing units dedicated for different parts of the scalar multiplication in order to increase performance. The computation is pipelined providing simultaneous processing of up to three scalar multiplications. We provide experimental results on an Altera Stratix II FPGA demonstrating that the processor computes a single scalar multiplication on average in and achieves a throughput of 235,550 scalar multiplications per second on NIST K-163. 相似文献
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提出了GF(2m)上的椭圆曲线点积加速器的一种有效的硬件设计,针对不同有限域GF(2m)及其上的椭圆曲线的特点,设计出较优的专用电路。此外,在控制器的设计中提出了一种新的方法—有限状态机的分解与合成,该方法灵活有效,且设计简单,尤其适合设计步进式状态机。最后,用Verilog HDL在FPGA上编程实现了GF(2193)上的点积加速器,计算一次点积仅需0.125ms,且通过重配置,可实现任何一个GF(2m)上的点积算术功能。 相似文献
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Kazuo Sakiyama Lejla Batina Bart Preneel Ingrid Verbauwhede 《Mobile Networks and Applications》2007,12(4):245-258
We present a high-speed public-key cryptoprocessor that exploits three-level parallelism in Elliptic Curve Cryptography (ECC)
over GF(2
n
). The proposed cryptoprocessor employs a Parallelized Modular Arithmetic Logic Unit (P-MALU) that exploits two types of different
parallelism for accelerating modular operations. The sequence of scalar multiplications is also accelerated by exploiting
Instruction-Level Parallelism (ILP) and processing multiple P-MALU instructions in parallel. The system is programmable and
hence independent of the type of the elliptic curves and scalar multiplication algorithms. The synthesis results show that
scalar multiplication of ECC over GF(2163) on a generic curve can be computed in 20 and 16 μs respectively for the binary NAF (Non-Adjacent Form) and the Montgomery
method. The performance can be accelerated furthermore on a Koblitz curve and reach scalar multiplication of 12 μs with the
TNAF (τ-adic NAF) method. This fast performance allows us to perform over 80,000 scalar multiplications per second and to enhance
security in wireless mobile applications.
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Ingrid VerbauwhedeEmail: |
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Benaissa M. Wei Ming Lim 《Very Large Scale Integration (VLSI) Systems, IEEE Transactions on》2006,14(6):659-662
The design of flexible elliptic curve cryptography processors (ECP) is considered in this paper. Novel word-level algorithms and implementations for the underlying GF(2/sup m/) multiplication and squaring arithmetic which enable improved flexibility versus performance tradeoffs, are presented and employed in the design of an efficient flexible ECP architecture; corresponding field-programmable gate-array (FPGA) prototyping results for two different processor word lengths are also included for evaluation. 相似文献
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Lo’ai Ali Tawalbeh Abidalrahman Mohammad Adnan Abdul-Aziz Gutub 《Journal of Signal Processing Systems》2010,59(3):233-244
This paper presents a processor architecture for elliptic curve cryptography computations over GF(p). The speed to compute
the Elliptic-curve point multiplication over the prime fields GF(p) is increased by using the maximum degree of parallelism,
and by carefully selecting the most appropriate coordinates system. The proposed Elliptic Curve processor is implemented using
FPGAs. The time, area and throughput results are obtained, analyzed, and compared with previously proposed designs showing
interesting performance and features. 相似文献
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彭庆军 《信息安全与通信保密》2006,(4):91-93
椭圆曲线密码系统高速实现的关键是点的数乘与加法,实现点的数乘与加法要在基域中做大量的算术运算,其中最耗时的是域元素的乘法。本文给出了一类有限域GF(2m)中乘法的快速实现方法,该方法简单、高效,容易硬件实现。 相似文献
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Elixir: High-Throughput Cost-Effective Dual-Field Processors and the Design Framework for Elliptic Curve Cryptography 总被引:1,自引:0,他引:1
《Very Large Scale Integration (VLSI) Systems, IEEE Transactions on》2008,16(11):1567-1580
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圆锥曲线密码学是一种新型的公钥密码学,迄今对圆锥曲线密码学的研究成果都是以有限域GF(p)上的圆锥曲线为基础的.本文将有限域GF(p)上的圆锥曲线C(GF(p))推广为有限域GF(2n)上的圆锥曲线C(GF(2n)),证明了圆锥曲线C(GF(2n))上的点和加法运算构成有限交换群(C(GF(2n)),),并给出了圆锥曲线群(C(GF(2n)),)的阶的计算.此外,提出了使用有限域GF(2n)上的圆锥曲线群构造公钥密码系统,并给出了ElGamal加密方案和数字签名算法(DSA)在圆锥曲线C(GF(2n))上模拟的算法,最后分析其安全性. 相似文献