(Ab)using foreign VMs: Running Java Card Applets in non-Java Card Virtual Machines

Michael Roland, J. Langer, R. Mayrhofer
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引用次数: 2

Abstract

Creating Java Card applications for Near Field Communication's card emulation mode requires access to a secure smartcard chip (the secure element). Today, even for development purposes, it is difficult to get access to the secure element in most current smart phones. Therefore, it would be useful to have an environment that emulates a secure element for rapid prototyping and debugging. Our approach to such an environment is emulation of Java Card applets on top of non-Java Card virtual machines (e.g. Android's Dalvik VM). However, providing a Java Card run-time environment on top of another Java virtual machine faces one big problem: The Java Card virtual machine's operation principle is based on persistent memory technology. As a result, the VM and the applications that run on top of it have a significantly different life-cycle compared to other Java VMs. Based on specific scenarios for secure element emulators for the Android platform, we evaluate these differences and their impact on Java VM-based Java Card emulation. Further, we propose possible solutions to the problems that arise from these differences in the life-cycles.
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(b)使用国外虚拟机:在非Java卡虚拟机上运行Java卡小程序
为近场通信的卡仿真模式创建Java卡应用程序需要访问安全的智能卡芯片(安全元件)。今天,即使是出于开发目的,也很难访问大多数当前智能手机中的安全元素。因此,拥有一个模拟安全元素的环境对于快速原型和调试是很有用的。我们实现这种环境的方法是在非Java卡虚拟机上模拟Java卡小程序(例如Android的Dalvik VM)。然而,在另一个Java虚拟机之上提供Java Card运行时环境面临一个大问题:Java Card虚拟机的操作原理是基于持久内存技术的。因此,与其他Java虚拟机相比,虚拟机及其上运行的应用程序具有明显不同的生命周期。基于Android平台的安全元素仿真器的特定场景,我们评估了这些差异及其对基于Java vm的Java Card仿真的影响。此外,我们提出了可能的解决方案,由这些生命周期的差异产生的问题。
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