Systems and methods for creating an extended smart card application file from multiple smart card application files

A method comprising:

• accessing, by an application that bundles smart card applications, a plurality of application files that are executable by a smart card runtime environment to run a plurality of smart card applications;
• and
• generating, within volatile or non-volatile storage of a computing device based at least in part on the plurality of application files for running the plurality of smart card applications, a single application file that is executable by the smart card runtime environment to run the plurality of smart card applications within the smart card runtime environment, wherein generating the single application file includes (a) merging, by the application that bundles smart card applications, at least a first package including executable code from a first application file for executing a first smart card application on a smart card with a second package including executable code from a second application file for executing a second smart card application on the smart card and (b) modifying, by the application that bundles smart card applications, the first package including executable code that is public in the plurality of application files to private in the single application file, wherein modifying the first package including executable code to private includes removing an export file and each application programming interfaces (API) for accessing classes associated with the first smart card application within the first package, wherein the single application file has a smaller storage size than the plurality of application files;
• and
• installing the single application file having the smaller storage size within memory the smart card, wherein the smart card runs the plurality of smart card applications, including the first smart card application and the second smart card application, by executing, using a secure element processor, the single application file, wherein when executing the single application file, the smart card prevents one or more packages associated with the second smart card application from accessing classes associated with the first smart card application within the first package made private.

A system comprising:

• one or more hardware processors;
• one or more non-transitory computer-readable media storing instructions, which, when executed by the one or more hardware processors, cause the system to perform operations comprising:
• accessing, by an application that bundles smart card applications, a plurality of application files that are executable by a smart card runtime environment to run a plurality of smart card applications;
• and
• generating, within volatile or non-volatile storage of a computing device based at least in part on the plurality of application files for running the plurality of smart card applications, a single application file that is executable by the smart card runtime environment to run the plurality of smart card applications within the smart card runtime environment, wherein generating the single application file includes (a) merging, by the application that bundles smart card applications, at least a first package including executable code from a first application file for executing a first smart card application on a smart card with a second package including executable code from a second application file for executing a second smart card application on the smart card and (b) modifying, by the application that bundles smart card applications, the first package including executable code that is public in the plurality of application files to private in the single application file, wherein modifying the first package including executable code to private includes removing an export file and each application programming interface (API) for accessing classes associated with the first smart card application within the first package, wherein the single application file has a smaller storage size than the plurality of application files;
• and
• installing the single application file having the smaller storage size within memory of the smart card, wherein the smart card runs the plurality of smart card applications, including the first smart card application and the second smart card application, by executing, using a secure element processor, the single application file, wherein when executing the single application file, the smart card prevents one or more packages associated with the second smart card application from accessing classes associated with the first smart card application within the first package made private.