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AES Advanced Encryption Standard an Encryption standards, is the U.S. government organizations to protect sensitive but without the confidential information of a kind of special Encryption algorithm. And a very likely outcome is, the encryption algorithm may eventually become formally private enterprise of encryption standard business department. (for U.S. military communications, and other confidentiality of the algorithm encrypt by independent, secret algorithm.)

In 1997, the us department of commerce on January a unit, the national institute of standards and technology (NIST) invented a new encryption process, and discovered that this new encryption can be a very good replace data encryption standard (DES) and can use less degree of three layers of data encryption standard (DES) Triple. This application block encrypt method (i.e. cipher technology which is called symmetry encryption algorithm (just as its name implies, it is to use the same encryption and decryption code block). Advanced encryption standard will be designed three key length: 128 bytes, 192 bytes and 256 bytes. Also, the requirement for this encryption algorithm can worldwide, and can use royalty-free level of security to provide sufficient to protect the future of 20 to 30 years. This method in software and hardware are easy to implement, in some limited environment (for example, smart CARDS) and easy to use, but also can provide good defensive various attacks.

The selection process is completely open to public supervision of public opinion and the. Allegedly, the full visibility to ensure the best possible design analysis and inspection. In 1998, the national institute of standards and technology (NIST) for AES selected candidates, this algorithm of 15 15 algorithm became the world community of password test analysis. The code includes national security community. Based on this, August 1999, the national institute of standards and technology for further analysis, the candidate will be reduced to five algorithm. They are:

MARS algorithm by IBM research department of a large group.

RC6 issued by the RSA laboratory.

Joan Rijndael Daemen, by Rijmen two Belgian Vincent and password by experts.

Serpent, w., Eli Biham by Ross Knudsen Lars and released.

Twofish Counterpane include the company by a highly respected password Schneier Bruce experts in a large team.

All of the above the speed and reliability of candidate algorithm with ANSI C and are widely Java language testing, such as in the hardware and software system, the speed of encryption and decryption keys and algorithm, and all kinds of setup time, degree of the interceptor against the test. Once again, the world community (including some code to overthrow their previous judge team), provides a more detailed analysis. Finally, the result is in October 2000 2, nist Rijndael announced the best candidate for AES algorithm. 6 December 2001, the United States secretary of commerce official admits the information processing standards FIPS 197 () and specified all sensitive information and documents without confidentiality will Rijndael adopted as senior encryption standard.

CMOS, refers to the Complementary Metal Oxide Semiconductor - a large-scale integrated circuit chip manufacturing applied materials) is a computer on the mainboard writeable only to keep the RAM chips, hardware configuration and the current system of some parameters of the user. By the motherboard CMOS battery power, even if the system power, will not lose information. CMOS RAM itself is a piece of memory, only the data storage function, and the parameters of the CMOS setup in through specific procedures.

In the field of computer, CMOS often refers to the preservation of computer basic startup information (e.g., date, time, startup Settings, etc.) of the chip. Sometimes people will say, mixed with BIOS CMOS on the mainboard is actually a CMOS RAM chips, is the writeable only to preserve the hardware configuration and user BIOS setup of some parameters. By the motherboard CMOS battery power, even if the system power, will not lose information. CMOS RAM itself is a piece of memory, only the data storage function. But for all the parameters in the BIOS setting to pass a special program. BIOS setup procedures are generally manufacturer integrating in chip, in particular the buttons on startup through can enter BIOS setup program, convenient for system Settings. Therefore the BIOS setting is sometimes called the CMOS setup.

Early CMOS chip is a separate MC146818A (DIP encapsulation), were 64 bytes storage system information. 386 later MC146818A chip microcomputer generally will be integrated into other IC chip (such as 82C206, PQFP encapsulation), especially after the mainboard 45/79 with real-time clock will CMOS battery back-up and integrated into a DALLDA called DS1287 chip. Along with the development of computer and the parameters of the CMOS RAM, now have generally 128 bytes when 256 bytes of capacity. To maintain the compatibility, the BIOS manufacturers will own the CMOS RAM about 64 bytes of MC146818A unified content with the CMOS RAM expanded format, but in the part with their special setting, so the BIOS chip that different manufacturer usually are not interchangeable, even can exchange, exchange information and to CMOS reset to ensure the normal operation of system.

CMOS original refers to the complementary metal oxide semiconductor memory, is a large-scale integrated circuit chip manufacturing applied materials) is a computer on the mainboard writeable only the RAM chips, mainly used to save the current system of the hardware configuration and the operator of some parameters Settings. CMOS RAM chips through a backup battery by the system in power, therefore it, or meet system power, CMOS information would be lost.

Due to the CMOS RAM chip itself is only a piece of memory, only has the function, so save data of the parameters set in the CMOS setup through special process. Early in the CMOS setup program resident floppy disk (such as IBM’s PC/AT machine), use very convenient. Now most manufacturers will CMOS setup program do BIOS chip, by pressing the boot in particular key can enter CMOS setup program and very easily, so the system setup the CMOS setup again, often called the BIOS setting.

Cloud Computing is the combination of Distributed Computing, Parallel Processing and Grid Computing, or also know as the computer science concept of business.

Many multinational company such as the information technology industry, Yahoo and Google IBM’s use of the concept of cloud calculative selling their products and services. Cloud calculative this term may be borrowed from the quantum physics of Electron Cloud “(” Cloud), emphasize that the calculation of diffuse and omnipresent distribution and social characteristics. In quantum physics “probability cloud)”, electron (around the nucleus in electronic is not a sport such as the rail track objects, but as the space, cloud filled the existence of the movement is described, electronic Newton classical mechanics but a probability distribution density function, use the schrodinger equation to describe fluctuations within the time specified, the probability of a particle size, with the formulation of the classical mechanics is totally different. Has the following characteristics of cloud, however, diffuse, simultaneously, etc., may indeed is calculated from the clouds cloud concept, this is the so-called “before the Ubiquitous computing”, IBM has a Ubiquitous computing is Ubiquitous “, “MS (Bill) soon followed a Ubiquitous computing” Pervade “, people is right now Ubiquitous computing is a new understanding, now say “Omnipresent”. However, the cloud calculative is purely commercial hype, it will change the pattern of information industry, now many people already use Google Apps and Google Doc, USES the many remote software applications such as word processors Office rather than with your local machine install these applications, who will buy Office software? There are many enterprise applications such as e-commerce applications, such as to write a transaction procedures, Google’s enterprise scheme and contains the templates, a salesperson didn’t study Netbeanr also can make. This calculation and industry trends is the source of the spirit, with a Service SaaS (on) the trend. Now, there’s only five computers in the world today, is a Google, one is the IBM, is a Yahoo, one is amazon.com, is a Microsoft, because these five company takes the lead in the distributed processing business applications on the leading the trend. From very early computer network is proposed that “is prescient.

ERP is the abbreviation of Enterprise Resourse Planning in English. It is a management accounting information system as the core enterprise resource planning, identification and, thus obtaining customer orders, finish machining, finally get customer delivery and payment.

In other words, the enterprise internal ERP will put all resources together, to purchase, production, costs, inventory, distribution, transportation, finance, human resource planning, so as to achieve the best combination of resources, the best benefit.

Enterprise Resource Planning (ERP), rational use has changed the face of Enterprise operation. ERP by using the best business system and integrated enterprise soul AD key business processes to raise questions and processes soul profit, market demand and reaction speed enterprise.

At the same time, enterprises in the ever-changing market opportunities, price and service level in the challenge, must constantly changing environment, improve enterprise management mode, enhance the competitiveness of enterprises. Previously only focus on enterprise internal process improvement, product development and manufacturing to raise the level of the market has now face. The fact that, in the modern competitive environment of enterprise survival and development to maintain with business partners to coordinate a sufficient to build a competitive edge of the value chain.

ERP software reasonable use can help enterprise internal operation rationalization, at the same time, feature-rich cooperation/cooperation can help enterprises as collaborative technologies in the cooperative enterprise groups and trade partner, and to improve the management level between space and improve expand enterprise competition ability.

E-business brings the abundant enterprise competition methods and tools that can help enterprises to better use ERP will vast network information system of traditional business and enterprise resource information effectively combined. Enterprise and customers, suppliers and employees, traders in an unprecedented way through the website together.

ERP application of symbol is: a successful operation system integration, software, and the operation across multiple departments, Second, business process rationalization, various business department of the optimized process according to completely reconstruct, Third, performance monitoring dynamic performance system can immediate feedback to correct the problem existing in the management, Four, management, enterprise can establish a continued unceasingly self evaluation and improvement of management mechanism.