With future network equipment the security service becomes a critical and serious problem. Especially in the network, users do not want to expose their message to others or to be forged by others. They make extensive use of cryptography and integrity algorithms to achieve security. The sender can achieve the high quality of security service (high security level), only if the receivers and route...

Introduction..................................................................... Security Strata................................................................. Low-Level Security Needs.......................................... Mid-Level Security Needs .......................................... High-Level Security Needs......................................... A Security Platform................

Data management and transaction processing are essential in supporting advanced time-critical applications. In many of these applications, security is another important requirement. Security is especially critical in electronic commerce applications where databases often maintain and provide sensitive information. In electronic commerce, service providers are sensitive to the needs of the clien...

VANETs have the potential to dramatically increase road safety by giving drivers more time to react adequately to dangerous situations. To prevent abuse of VANETs, a security infrastructure is needed that ensures security requirements like message integrity, confidentiality, and availability. After giving more details on the requirements we propose a security infrastructure that uses asymmetric...

for each country, national security in the most urgent and significant value and need, so each government tries to justify its policies and strategies in order to reach and preserve national security. acquiring national security is, people should share national interests by haying health, land integrity, independence, power, credits and all the values generally. they should be sure of this secu...

The reliable execution of a mobile agent is a very important design issue in building a mobile agent system and many fault-tolerant schemes have been proposed so far. Security is a major problem of mobile agent systems, especially when money transactions are concerned . Security for the partners involved is handled by encryption methods based on a public key authentication mechanism and by secr...