Motorola maxx V6 manual New Implementation, Draft Subject to Change 87/201

Java ME Developer Guide

Chapter 12 - JSR-177 Java ME Security and Trust Services API

∙CLDC 1.1

∙MIDP 2.0

12.3New Implementation

This article will only reference the APDU package of JSR 177, SATSA-APDU since it is the only one implemented on Motorola JSR 177 compliant devices.

The smart card communication API is based on the Generic Connection Framework in the ￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿ package. The APDUConnection interface is used to com- municate with ISO 7816-4 compliant smart cards.

12.3.1javax.microedition.apdu Optional Package

The SATSA-APDU optional package supports the following functions:

∙A MIDlet can create an APDUConnection to communicate with a smart card application identified by an AID.

∙An APDUConnection supports exchange of APDU commands encoded in the format, which conforms to ISO 7816-4.

∙Each APDUConnection has a logical channel reserved exclusively for it.

∙Logical channel management is handled by the API implementation, which requests the smart card to allocate an unused logical channel.

∙More than one APDUConnection can be created to communicate simultaneously with smart card applications on one (via logical channels) or multiple smart cards.

∙An APDUConnection can be created to communicate with (U)SAT applications on channel 0 of a smart card. The APDUConnection has limited capabilities when communicating with a (U)SAT application.

∙Only ENVELOPE APDUs may be sent by a MIDlet to trigger a (U)SAT application.

∙Proactive sessions and commands are not supported by the APDUConnection. It is the MIDlet's responsibility to not send an envelope to the (U)SAT application that would result in a proactive session being initiated via the APDUConnection interface.

The optional package SATSA-APDU includes two components to support communica- tion with ISO 7816-4 compliant smart cards using the APDU protocol:

DRAFT - Subject to Change [87/201]