RSA算法是第一個能同時用于加密和數字簽名的算法，也易于理解和操作。 RSA是被研究得最廣泛的公鑰算法，從提出到現在已近二十年，經歷了各種攻擊的考驗，逐漸為人們接受，普遍認為是目前最優秀的公鑰方案之一。RSA的安全性依賴于大數的因子分解，但并沒有從理論上證明破譯RSA的難度與大數分解難度等價。即RSA的重大缺陷是無法從理論上把握它的保密性能如何，而且密碼學界多數人士傾向于因子分解不是NPC問題。RSA的缺點主要有：A)產生密鑰很麻煩，受到素數產生技術的限制，因而難以做到一次一密。B)分組長度太大，為保證安全性，n 至少也要 600 bits以上，使運算代價很高，尤其是速度較慢，較對稱密碼算法慢幾個數量級；且隨著大數分解技術的發展，這個長度還在增加，不利于數據格式的標準化。目前，Set(Secure Electronic Transaction)協議中要求CA采用2048比特長的密鑰，其他實體使用1024比特的密鑰。 這種算法1978年就出現了，它是第一個既能用于數據加密也能用于數字簽名的算法。它易于理解和操作，也很流行。算法的名字以發明者的名字命名：Ron Rivest, AdiShamir 和Leonard Adleman。但RSA的安全性一直未能得到理論上的證明。
上傳時間： 2014-01-20
上傳用戶：蠢蠢66
JavaServer Faces (JSF) is the “offcial” component-based view technology in the Java EE web tier. JSF includes a Set of predefned UI components, an event-driven programming model, and the ability to add third-party components. JSF is designed to be extensible, easy to use, and toolable. This refcard describes the JSF development process, standard JSF tags, the JSF expression language, and the faces-confg.xml confguration fle.
標簽： component-based JavaServer technology the
上傳時間： 2014-01-12
上傳用戶：songyue1991
Aircrack-ng is an 802.11 WEP and WPA-PSK keys cracking program that can recover keys once enough data packets have been captured. It implements the standard FMS attack along with some optimizations like KoreK attacks, as well as the all-new PTW attack, thus making the attack much faster compared to other WEP cracking tools. In fact, Aircrack-ng is a Set of tools for auditing wireless networks.
標簽： keys Aircrack-ng cracking WPA-PSK
上傳時間： 2013-12-25
上傳用戶：bruce
Run following Matlab commands to make sure the installation worked correctly. Unlike query function, filterdb does not load all waveforms to memory but returns filtered database object. This is useful when the resulting Set of the query is too big to fit in memory. Consequent calls to read function can be made to read content of this filtered database object.
標簽： installation following correctly commands
上傳時間： 2013-12-30
上傳用戶：ainimao
Introduction ? ? The ARM Cortex -A8 microprocessor is the first applications microprocessor in ARM!ˉs new Cortex family. With high performance and power efficiency, it targets a wide variety of mobile and consumer applications including mobile phones, Set-top boxes, gaming consoles and automotive navigation/entertainment systems. The Cortex-A8 processor spans a range of performance points depending on the implementation, delivering over to 2000 Dhrystone MIPS (DMIPS) of performance for demanding consumer applications and consuming less than 300mW for low-power mobile devices. This translates into a large increase in processing capability while staying with the power levels of previous generations of mobile devices. Consumer applications will benefit from the reduced heat dissipation and resulting lower packaging and integration costs.
標簽： microprocessor Introduction applications Cortex
上傳時間： 2013-12-09
上傳用戶：xzt
Architecture and Implementation ? ? Cortex -A8 of the ARM Microprocessor October 2005 Introduction ? ? The ARM Cortex -A8 microprocessor is the first applications microprocessor in ARM!ˉs new Cortex family. With high performance and power efficiency, it targets a wide variety of mobile and consumer applications including mobile phones, Set-top boxes,
標簽： Implementation Microprocessor Architecture October
上傳時間： 2013-12-15
上傳用戶：daoxiang126
Architecture and Implementation ? ? Cortex -A8 of the ARM Microprocessor October 2005 Introduction ? ? The ARM Cortex -A8 microprocessor is the first applications microprocessor in ARM!ˉs new Cortex family. With high performance and power efficiency, it targets a wide variety of mobile and consumer applications including mobile phones, Set-top boxes,
標簽： Implementation Microprocessor Architecture October
上傳時間： 2017-07-23
上傳用戶：lizhizheng88
Written for engineering and computer science students and practicing engineers, this book provides the fundamental applications and mathematical techniques of signal processing. Topics covered include programming in MATLAB, filters, networking, and parallel processing. MATLAB is introduced and used to solve numerous examples in the book. Companion software available In addition, a Set of MATLAB M-files is available on a CD bound in the book.
標簽： engineering practicing and engineers
上傳時間： 2017-07-28
上傳用戶：fandeshun
QualNet Sensor Networks Library QualNet’s new Sensor Networks Library is a much awaited feature Set that supports the IEEE 802.15.4 standard, otherwise known as Zigbee. Zigbee networks are Wireless Personal Area Networks (WPANs) that are defi ned by a low data rate, long battery life, and secure networking. Zigbee networks support automation and remote control
標簽： Networks QualNet Library Sensor
上傳時間： 2017-07-30
上傳用戶：CSUSheep
RS_latch using vhdl, When using static gates as building blocks, the most fundamental latch is the simple SR latch, where S and R stand for Set and reSet. It can be constructed from a pair of cross-coupled NOR (Not OR) logic gates. The stored bit is present on the output marked Q. Normally, in storage mode, the S and R inputs are both low, and feedback maintains the Q and Q outputs in a constant state, with Q the complement of Q. If S (Set) is pulsed high while R is held low, then the Q output is forced high, and stays high when S returns to low similarly, if R (ReSet) is pulsed high while S is held low, then the Q output is forced low, and stays low when R returns to low.
標簽： using fundamental the RS_latch
上傳時間： 2017-07-30
上傳用戶：努力努力再努力
