搜索结果: 1-11 共查到“NFS”相关记录11条 . 查询时间(0.079 秒)
Challenges with Assessing the Impact of NFS Advances on the Security of Pairing-based Cryptography
finite fields discrete logarithm problem tower number field sieve
2016/12/7
In the past two years there have been several advances in Number Field Sieve (NFS) algorithms for computing discrete logarithms in finite fields \fpn\fpn where pp is prime and n>1n>1 is a small intege...
Faster individual discrete logarithms in non-prime finite fields with the NFS and FFS algorithms
finite field discrete logarithm number field sieve
2016/7/13
Computing discrete logarithms in finite fields is a main concern in cryptography. The best algorithms known are the Number Field Sieve and its variants in large and medium characteristic fields (e.g. ...
Improving NFS for the discrete logarithm problem in non-prime finite fields
Discrete logarithm computation NFS
2016/6/12
The aim of this work is to investigate the hardness of the discrete logarithm problem in fields GF(pn) where n is a small integer greater than 1. Though less studied than the small characteristic case...
This paper shows, assuming standard heuristics regarding the number-field sieve, that a "batch NFS" circuit of area L^{1.181...+o(1)} factors L^{0.5+o(1)} separate B-bit RSA keys in time L^{1.022...+o...
A note on the practical complexity of the NFS in the medium prime case: Smoothness of Norms
DLP NFS pairing based cryptography
2013/4/18
During an ongoing examination of the behaviour, in practice, of the Number Field Sieve (NFS) in the medium prime case we have noticed numerous interesting patterns. In this paper we present findings o...
基于方位deramp和NFS大斜视聚束SAR成像算法
聚束合成孔径雷达 方位deramp 非线性频率变标 大斜视
2011/5/17
该文针对聚束SAR回波信号方位向频谱混叠和大斜视时距离向和方位的严重耦合，提出了一种结合方位向deramp和非线性频率变标(NFS)的斜视聚束SAR成像算法。首先在方位向进行deramp操作，消除方位频谱混叠。然后通过非线性频率变标并考虑距离向时频变换的标度变化补偿方位相位，实现场景成像。仿真结果表明，该算法可有效消除方位频谱混叠，具有较高的精度，满足大斜视聚束SAR的成像要求和较大测绘带宽度要求...
In this contribution we investigate practical issues with imple-
menting the NFS algorithm to solve the DLP arising in XTR-based cryptosys-
tems. We can transform original XTR-DLP to a DLP instance ...
NFS over Lustre性能评测与分析
Lustre 文件系统 性能测试
2009/5/8
传统的网络文件系统难以满足高性能计算系统的I/O 需求，基于对象存储的全局并行文件系统Lustre可以有效地解决传统文件系统在可扩展性、可用性和性能上存在的问题。该文介绍了Lustre文件系统的结构及其优势，对NFS over Lustre 进行了性能测试，并将测试结果与Lustre文件系统、NFS网络文件系统及本地磁盘Ext3文件系统的性能进行了比较分析，给出了性能差异的原因，提出了一种可行的解...
集群环境中影响NFS文件系统带宽的测试与分析
NFS 带宽 性能分析
2009/2/26
NFS是集群系统中提供全局文件共享的主要手段，研究影响NFS带宽的因素对于优化集群系统的性能十分重要。该文针对集群系统中I/O特征建立了NFS的带宽模型，设计和实现了基于MPI开发的并行文件系统测试工具Mpbonnie，在集群系统中测试和分析了多种因素对NFS性能的影响。结果表明，除已知的存储和网络因素外，与NFS带宽关系密切的因素还包括客户端数量、服务器文件系统类型、读写方式和服务器处理能力等。
Non-Wafer-Scale Sieving Hardware for the NFS：Another Attempt to Cope with 1024-bit
RSA cryptanalytic hardware factoring integers
2008/12/29
Significant progress in the design of special purpose hardware for supporting
the Number Field Sieve (NFS) has been made. From a practical cryptanalytic point
of view, however, none of the published...
在Windows上实现NFS的用户资源管理机制*
NFS Windows服务器 用户资源管理
2008/3/6
针对Linux NFS系统只能基于主机的访问控制，提出了一种在Windows上实现NFS的用户资源管理机制的方法。