Motorola MOTORAZR maxx V6 Developer's Manual page 88

Java ME Developer Guide
Chapter 12 - JSR-177 Java ME Security and Trust Services API
A subset of the
API or the MIDP API.
The
APDUConnection to support APDU exchanges.
APDUConnection Interface
This interface extends the
the APDU connection. MIDlets can use this connection to communicate with applica-
tions on a smart card using APDU protocol. ISO 7816-4 defines the APDU protocol as
an application-level protocol between a smart card and an application on the device.
There are two types of APDU messages:
command APDUs - sent to the smart card by a MIDlet
response APDUs - messages received from the smart card
All APDUs is generated according to the ISO 7816-4 specification.
Opening an APDU Connection
An APDU connection is established between a MIDlet and an application on a smart
card. It uses one dedicated logical channel for that connection. The implementation
supports multiple APDU connections between the handset and a smart card. Addi-
tionally it supports multiple APDU connections between a MIDlet and an application
on a smart card (if multiple connections are supported by the application on a smart
card).
A MIDlet uses method
connection. An APDU connection is created by passing a generic connection URI
string with the smart card AID and, optionally, the slot in which the smart card is in-
serted, to the
method
plementation requests a new logical channel from the smart card, for the APDU con-
nection, unless channel 0 is used. When method
DRAFT - Subject to Change
package. It supports the exception class
, which is not included in the CLDC
package. It includes the interface
method. When the
is called by a MIDlet, the im-
is called by a MIDlet, and the logical
interface. It defines
to open an APDU
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