Java Cards

Java Card for the Internet of Things : ecure IoT Cloud Edge

2021-07-19 10:59:14 M&W SmartCard 15

secure iot cloud edge

The last couple years have seen the introduction of a large numbers of IoT platforms looking to connect devices, analyze data and dispatch processed information to business applications. Unlike the previous generation of M2M systems, most of those IoT platforms are cloud- based, and have indirect control or oversight over the devices themselves. IoT solution vendors generally rely on partners to connect objects to the cloud and to make sure that edge components are secure.

A secure element running Java Card can play a critical role to ensure trust between the cloud and connected device. It can be leveraged by the device to delegate the provisioning of device identity and to manage the initial on-boarding process. It can further secure the cloud authentication and authorisation process and store the related credentials securely.

Related to the advent of cloud platforms is a growing need for the management of device lifecycle states and local enforcement of security policies.

In a market where connected objects are likely to outlive several generations of IoT systems, control over the lifecycle of a device is key to ensure that it can be retired or repurposed securely, and that it continues to align with security policies as they evolve.

Since many objects may be intermittently connected to the network, it also helps to have a secure local focal point for the administration and enforcement of security policies.

Java Card can support this use case by combining the flexibility and updatability of Java with the local enforcement capabilities of a secure element.


Java Card is an open standard from Sun Microsystems for a smart card developmentplatform. Smart cards created using the Java Card platform have Java applets stored on them. The applets can be added to or changed after the card is issued.

There are two basic types of smart cards. The memory smart card is the familiar removable memory device; it usually features read and write capabilities and perhaps security features. The more complex version, the processor smart card, is a very small and extremely portable computing device that could be carried in your wallet. Java-based smart cards belong to the latter category. They store data on an integrated microprocessor chip. Applets are loaded into the memory of the microprocessor and run by the Java Virtual Machine. Similarly to MULTOS, another smart card development technology, Java Card enables multiple application programs to be installed and coexist independently. Individual applets are protected by a firewall to preserve their integrity and prevent tampering. Applications can be updated dynamically.

In the United States, the Department of Defense, Visa, and American Express are among the organizations creating Java Card-based applications.


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