US 2007/0169043 A1 · Supporting applets on a high end platform

Abstract

To execute legacy smart card applications in a next generation smart card environment, a mechanism converts the applications into a format executable by the next generation smart card platforms. For instance, in a Java-based environment, a normalizer tool translates a CAP file into a Java Class file. Additional mechanisms recreate, on next generation smart cards, a specialized environment that allows the legacy applications to execute without impacting legacy and non-legacy application performance. For example, mechanisms create new instances of previously shared objects so that legacy applications can continue to expect exclusive access to those objects. Moreover, mechanisms manage the communication between a legacy application and non-legacy applications by controlling how and when calls are sent to the legacy application.

Claims20

Dependent claims

A method comprising:

executing a set of applications in a multi-threaded runtime environment on a smart card, wherein at least one application in said set of applications is a single threaded application designed to run in a single-threaded environment, and wherein the single threaded application is accessible to other applications in the set of applications through a shareable interface object;
and
generating in the multi-threaded runtime environment a specialized environment in which the single threaded application can execute safely, wherein said specialized environment includes a proxy object which encapsulates the shareable interface object, and wherein said proxy object controls access by the other applications in said set of applications to the shareable interface object such that only one application is allowed to access code in the single threaded application at a time.

Dependencies are inferred from the claim text.

Supporting applets on a high end platform

Life of this patent

Supporting applets on a high end platform

Life of this patent

Abstract

Claims20