Correlation power analysis of DECIM～v2

Power analysis has been a powerful and thoroughly studied threat for implementations of block ciphers and public key algorithms but not yet for stream ciphers.Based on the consumed power differences between two neighboring clock cycles,this paper presents a correlation power analysis(CPA)attack on the synchronous stream cipher DECIM～v2(the tweaked version of the original submission DECIM).This attack resynchronizes the cryptographic device ceaselessly with many different initialization values(IVs)to obtain enough power traces.Then by modeling the statistical properties of the differential power traces with the correlation coefficients,the proposed attack algorithm can completely reveal the secret key of DECIM～v2.Furthermore,a simulation attack is mounted to confirm the validity of the algorithm.The results show that the entire secret key of DECIM～v2 can be restored within several minutes by performing 12 CPA attacks.It seems that there are still some defects in the design of DECIM～v2 and thus some further improvements should be made to resist the proposed attack.     

爱情一转身～～

据说,《飞鸟和鱼》这首歌是音乐人根据这样一个伤情故事编写的。一只美丽的小鸟,在飞过一片波光潋滟的饿水域时,偶遇一条浮在水面呼吸的鱼,眼神碰撞,久久凝望,它们惊讶地发现,彼此爱上了对方。小鸟就在空中盘旋,迟迟不肯飞走,而这条鱼也久久不愿沉入水底。然而,它们毕竟是两个完全不同世界中的生命,注定无法走到一起。最后,这条鱼带着深深的叹息,沉入水底,而那只飞鸟也悲伤地离开了那片海域。匆匆相遇,匆匆离散。从此,这只鸟再也没有经过这片水域,鱼也再没有离开水底……     

炼金术士～玛莉

多达百余种的魔法道具调配,并穿插出外冒险与战斗等一些突发事件,游戏全程的日语配音和多种游戏结局,令人想一玩再玩。     

The Third Editorial Committee of China Laser Journal(April 1982～April 1985)

Chief Editor Wang Zhijiang Deputy Chief Editor Zhang Cunhao, Zhang Zhiming, Zhang Hongjun Members (in order of strokes of surname) Yu Rongjin (Changchun Institute of Physics, Academia Sinica)     

Room temperature continuous wave operation of quantum cascade laser at λ～ 9.4μm

Continuous wave (CW) operation of long wave infrared (LWIR) quantum cascade lasers (QCLs) is achieved up to a temperature of 303 K.For room temperature CW operation,the wafer with 35 stages was processed into buried heterostructure lasers.For a 2-mm-long and 10-μm-wide laser with high-reflectivity (HR) coating on the rear facet,CW output power of 45 mW at 283 K and 9 mW at 303 K is obtained.The lasing wavelength is around 9.4μm locating in the LWIR spectrum range.     

0～20mA/4～20mA电流环

电流环信号与电压信号相比不易受噪声干扰,在一定范围内不受传输线长度的制约(电流值不受线电阻的影响),因此,工业控制中常采用这种方式传输信号。图1电路允许数字选择电流环传输的标准范围:0mA至20mA或4mA至20mA,这两种电流范围已被广泛用于工业系统。 图中,模拟开关(IC2)控制由2.5V基准源(IC1)驱动的电阻分压器,数模转换器(DAC)(IC3)     

TGL炼金术士～玛莉

多达百余种的魔法道具调配,并穿插出外冒险与战斗等一些突发事件,游戏全程的日语配音和多种游戏结局,令人想一玩再玩.     

1～400MHz,1～900MHz混合集成系列放大器

采用厚薄膜混合集成电路工艺,研制了1～400MHz,1～900MHz系列混合集成放大器。由于采用了负反馈电路,放大器具有优良的增益平坦特性、温度特性和稳定性。良好的匹配性能可使放大器多级级联。     

0～500V直流稳压电源

通常我们见到的直流稳压电源,要么输出电流较大(3A左右),但输出电压不高(最高200V左右),要么输出电压较高(最高可达500V),但输出电流不大(仅几十mA~1A)。而在工业应用场合,有时需要用到输出电压调整范围大、输出电流也大的高性能稳压电源,而且要求发热量小、持续工作的可靠性要     

1～9月电信业运行状况

一、主要指标发展情况(一)业务总量和业务收入图12005～2008年各月电信业务收入比较2008年1～9月,全国电信业务总量累计完成16605.5亿元,比上年同期增长23.2%;电信业务收入累计完成6100.2亿元,比上年同期增长8.3%。     

Atmosphere Transmission Performance for 0.4 μm～0.8 μm Ray Radiation in Middle Latitude of China

This paper researched on the atmospheric transmission performance of 0.4μm～0.8 μm ray radiation based on the characteristic of the middle latitude atmosphere in China. By analysis of the characteristic of the actual atmosphere, the absorption of molecular and the scattering of the steam and ozone, as well as the aerosol scattering(big granule scattering) are play a leading role to the 0. 4 μm～0.8μm ray radiation. Then a better atmospheric transmission formula in horizontal path has been deducted. The result of computer simulation indicates that this equation can best calculate the transmission performance of 0.4 μm～ 0.8 μm visible radiation in the middle latitude area of China. This computing result was applied to the nuclear explosion parameter detection system based on 0.4 μm～0.8μm visible radiation. Through nuclear explosion simulator to produce ray radiation, the tested result indicates that this method has the better measuring precision than the traditional method with the software of LOWTRAN. The calculation result of this formula not only can apply directly to each kind of optoelectronics detecting system, but also to the optical wireless communication system based on the 0.4μm～0.8μm ray radiation.     

《OPTOELECTRONIC TECHNOLOGY》Vol.21(2001),No.1～4 Table of contents

No.1 The Status and Trends of Display Devices Tong Linsu( 1 )…………………………………Transparent Conductive Oxide Doped Thin Films with High Valence Difference betwe-en Dopantand Ion SubstitutedMeng Yang,Yang Xiliang,Chen Huaxian etal( 1 7)…………………………………Design and the Aanalysis of the Discharging Cell Parameters in Color PDPFan Weihua,Li Qingqin( 2 5)……………………………………………………………A Research about Regularized Linear Least-squares EstimateShi Fagang…     

1～9月电信业运行状况

一、主要指标发展情况(一)业务总量和业务收入图12005～2008年各月电信业务收入比较2008年1～9月,全国电信业务总量累计完成16605.5亿元,比上年同期增长23.2%;电信业务收入累计完成6100.2亿元,比上年同期增长8.3%。     

800～950MHz/1800～1900MHz晶体管低噪声放大器

８００～９５０ＭＨｚ／１８００～１９００ＭＨｚ晶体管低噪声放大器在低噪声放大器设计中,往往会遇到晶体管选择的问题。一般情况下,砷化稼晶体管增益较高,但价格较贵,而硅晶体管尽管价格便宜,但增益往往不尽人意。针对这种情况,ＨＰ公司最新推出的ＨＢＦＰ－０４...     

100W～3kW地面数字电视发射机（KT-UDT514～5110）

产品特点●工作频段：470-806MHz，捷变频频道输出。工作带宽：6／7／8MHz可选●易于适应向不同的数字电视制式转换，适用于我国地面数字电视标准和欧洲标准     

MICROELECTRONICS List of Contents(2001;Vol.31,No.1～No.6)

·Research Papers·Title Authors No.( Page)Maximum Power Estimation for CMOS Sequential Circuits by Genetic AlgorithmLU Ju　n- ming,LIN Zheng- hu　i 1 ( 6)………………………………………………………………………A Simulation and Study of Electro- Thermal Coupling Effects in CMOS IC'sLIU Miao,ZHOU Ru　n- de,JIA Song- liang1 ( 1 0 )………………………………………………………Modeling of Heavily Doped Substrate Crosstalk in Mixed- Signal IC'sSHI Yi- bing,CHEN Gu　ang- ju,WAN…     

《RESEARCH & PROGRESS OF SSE》Table of contents Vol.212001,No.1～4

PapersNo. PagePerspective of Solid State Electronics in New Century L IN Jinting　 1　 1……………………………………A 19W C- band MMIC Multichip Combined Power AmplifierCH EN Tangsheng,SH EN Ya,L I F uxiao,et al.　 1　 5…………………………………………………3mm Finline Mixer for 3mm FM/ CW Component ApplicationsH U Jiankai,H UAN G Zhenqi,L I Baoling,et al.　 1　 10………………………………………………Dynamic Characteristics of L arge Amplitude Random Telegraph Signals in…     

解析401～402MHz与405～406MHz短距离设备电磁兼容欧洲标准

介绍了短距离设备欧洲标准ETSI EN 302 537-1 V1.1.2的测试条件、电源要求和环境要求,分析了辐射测试场地和测试布置。最后,详尽解读了401～402 MHz与405～406 MHz频段超低功耗医学设备的频率误差、发射带宽、有效辐射功率、杂散发射、低电压条件下的频率稳定度、基于低功率低占空比条件的频谱访问等发射机参数要求,以及接收机杂散的要求。