Google Inc.

Alexej Muehlberg

Jonathan Wall

Hauke Meyn

Rob Von Behren

Ismail Cem Paya

Certain legacy contactless card readers recognize only applets having a short-form AID. However, the long-form AID applets can allow more functionality and specifically can allow use of multiple software applications within a mobile device. A legacy card reader requests invocation of a software applet based on the short-form AID known to the legacy card reader. A router applet operating on the mobile device receives the request for the short-form AID applet, determines the long-form AID applet corresponding to the short-form AID applet, and routes the request to the long-form AID applet, thereby invoking the long-form AID applet. In this manner, legacy readers that have stored therein only the short-form AID applet can invoke the functionality of the long-form AID applet on the smart card. Additionally, newer readers implementing the long-form AID applet can request directly the long-form AID applet.

Routing secure element payment requests to an alternate application

Systems, methods, computer programs, and devices are disclosed herein for partitioning the namespace of a secure element in contactless smart card devices and for writing application data in the secure element using requests from a software application outside the secure element. The secure element is a component of a contactless smart card incorporated into a contactless smart card device. A control software application resident in the same or a different secure element provides access types and access bits, for each access memory block of the secure element namespace, thereby portioning the namespace into different access types. Further, a software application outside the secure element manages the control software application by passing commands using a secure channel to the secure element, thereby enabling an end-user of the contactless smart card device or a remote computer to control the partitioning and use of software applications within the secure element.

Writing application data to a secure element

Communication between a software application midlet of a contactless payment device and a control applet resident within a secure element of the contactless payment device includes selecting, on the software application midlet, a card applet to configure from a registered list of card applets, the list comprising application identifiers (AIDs) of card applets resident in the secure element; transmitting, through a secure channel, to the control applet on the secure element, the selected card applet's AID and an instruction for a selected function to be performed on the selected card applet; invoking, by the control applet, process method function calls of a card runtime environment, wherein the process method function calls are defined by the card issuer or the card runtime environment for performing the selected function on the selected card applet; and rendering the process method function calls, thereby performing the selected function on the selected card applet.

Wallet application for interacting with a secure element application without a trusted server for authentication

Partitioning the namespace of a contactless smart card

Managing the lifecycle of a card software application received from a remote trusted service manager (TSM) for a secure element of a contactless smart card comprises receiving, from the remote TSM, a card application and an instruction for performing a function on the card application. The card application comprises account information of one card instrument and an application identifier (AID). The instruction is rendered in the secure element to perform the function on the card application. The card application is registered in a control application of the secure element using the AID. The control application comprises a list of AIDs of previously received and registered card software applications and a card application status tag for each of the listed AIDs. The card application status tag of the registered card application is updated in the control application based on the function performed.

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Hamburg, Germany

Alexej Muehlberg