【摘要】 J2ME为移动无线设备带来了Java语言的平台无关性,能够动态地、安全地以各种类型的网络向移动无线设备传送交互内容和应用程序,并可以按用户的需求定制应用程序。连接限制设备配置(CLDC)将基本运行时环境定义为一组核心类和一个运行在特定设备上的特定JVM。然而,J2SE中所能提供的安全机制远远超过了支持CLDC的Java虚拟机(JVM)所能够承受的内存负荷,因此CLDC的安全模型采取了某些折中的措施,而且模型简单,允许以后的进一步扩充。首先介绍了J2ME平台,接着介绍了CLDC,最后对CLDC的安全机制进行了详细的研究。更多还原

【Abstract】 J2ME brings platform independency i n herited from Java language to mobil e wireless devices.It enables dynam-ic and secure delivery of interactiv e content and applications to those d evices via various network.And it ca n customize applica-tions according to users’ requir ements.Connected,Limited Device Configuration(CLDC)defines a set of core cla sses and a spe-cific JVMrunning on specific devices for basic Java Runtime Envi ronment (JRE).Yet,the total amount of code devote d to secu-rity in J2SE f ar exceeds the memory budget available for a JVM supporting CLDC.Therefore the security model fo r CLDC has some compromises and tries to be simp le and allow for more comprehensive s ecurity solutions in later versions.This paper first g ives basic concepts of J2ME platform;then introduces CLDC;finally int erprets the security mechanism of CLDC in detail.更多还原