U215-A PRINTER

U215-A PRINTER

cation, the two categories of mechanism are adopted according to varied needs. COS security system COS safety system mainly consists of three sections: Safety state: current safety classification of card, which is used for judging holder whether or not has right to operate. Before power of IC card being connected, COS just has the minimum right to operation. Only pass authentication, like password verification and interactive authentication, can access to higher rights. Safety state is stored and indicated in special memory. Security attribute: every file has a corresponding requirement whether or not conduct an operation. Only security state meets file’s needs, operation concerned can be conducted. Therefore, security attribute is also called operation purview. When prepare to conduct an item of operation, system would automatically inspect current security classification whether or not meet requirement of purview. Security mechanism: based upon above security structure, it is needed to establish a security mechanism to interchange safety state, so that connecting safety state and security attribute. In other words, make valid user holding relevant operating right, and hinder illegal user. Generally, the transformation of safety state includes password verification, authentication, encryption /decryption.etc. PIN authorization Verifying PIN, like using bank card, terminal transmit password into IC card, in which being compared with the password stored in secret area. Card holder gets operation right if passwords are matched. If fail to match there are only three times to try. After three times card holder is su fuel dispenser pposed as illegal user, verifying PIN is closed. PIN authentication technology has a long history, which is only testify card holder whether or not know password, unable to testify he or she whe fuel dispenser ther legitimate holder. Because of the shortcoming, a series of new authenticating technology have researched that employs human creation trait to fuel dispenser distinguish personal identification. At prese

........ 33　　 10.1.2.1. Principles ............................................................................................................................................33　　 10.1.2.2. Block level protocol ..........................................................................................................................34　　 10.1.2.2.1. Data frames...................................................................................................................................34　　 10.1.2.2.2. Service frames ..............................................................................................................................34　　 10.1.2.2.3. Protocol description .....................................................................................................................35　　 10.1.2.2.4. Protocol parameters ....................................................................................................................37　　 10.1.2.3. Message level protocol...................................................................................................................37　　 10.1.2.3.1. Protocol description .....................................................................................................................38　　 10.1.2.3.2. Transport of application messages vs. frame length ...........................................................38　　 10.1.3. Processing invalid application messages ............................................................... fuel dispenser ..... 38　　 10.1.4. Protocol parameterisation.......................................................................................... 39　　 10.2. TCPIP LINK...................... fuel dispenser ............................................................................................ 40　　 10.2.1. Principles..................... fuel dispenser ......................

About sponsorship Stockmarkets Mar 16th 2006 From The Economist print edition © 2006 .  About sponsorship Trade, exchange rates and budgets Mar 16th 2006 From The Economist print edition © 2006 .  About sponsorship The world s richest people Mar 16th 2006 From The Economist print edition © 2006 .  About sponsorship Overview Mar 16th 2006 From The Economist print edition China s industrial production in January and February was 16.2% higher than a year ago. Its inflation rate fell to 0.9% in February. In the same month China s trade surplus narrowed sharply to $2.5 billion; its 12-month surplus fell to $102.6 billion. Russia s trade surplus is even bigger it rose to $124.3 billion in the year to January. Brazil s inflation rate fell to 5.5% in February, its lowest for almost two years. © 2006 .  About sponsorship Current-account balances Mar 16th 2006 From The Economist print edition America s $805 billion current-account deficit last year was the world s biggest in absolute terms, but as a percentage of GDP it pales in comparison with the 24.5% deficit forecast this year for Eritrea or the 24.6% forecast for São Tomé e Príncipe. The biggest surpluses belong to countries such as Trinidad and Tobago, with large energy exports. © 2006 .  About sponso fuel dispenser rship Economy Mar 16th 2006 From The Economist print edition © 2006 .  About sponsorship Financial markets Mar 16th 20 fuel dispenser 06 From The Economist print edition © 2006 .  SEARCH fuel dispenser RESEARCH TOOLS