NAME

PCSC::Card - Smarcard communication library

SYNOPSIS

 $hCard = new PCSC::Card ($hContext,
                        "GemPC430 0 0",
                        $PCSC::SCARD_SHARE_EXCLUSIVE);

 $RecvData = $hCard->Transmit([0xBC,0xB0,0x09,0xC8, 2]);

 $hCard->Disconnect($PCSC::SCARD_LEAVE_CARD);

DESCRIPTION

The PCSC::Card module implements the PCSC::Card class. Object from this class are used to communicate with a given reader. They are constructed out of a reference to a PCSC object that drives the reader.

For more information about PCSC please read the PCSC(3pm) man page.

A PCSC::Card object uses the following propoerty: $pcsccard_object->{hContext} the reference to the underlying pcsc object $pcsccard_object->{hCard} the current pcsc connection handle $pcsccard_object->{dwProtocol} the protocol being used

CONSTRUCTORS

The following methods construct a PCSC::Card object:

• $hCard = new PCSC::Card ($hContext);

  Constructs a new PCSC::Card object without connecting to any reader.

  - $hContext is mandatory and contains the reference to a valid PCSC oject.

• $hCard = new PCSC::Card ($hContext, $reader_name, $share_mode, $prefered_protocol);

  Constructs a new PCSC::Card object and connect to the specified reader.

  - $hContext is mandatory and contains the reference to a valid PCSC oject.

  - $reader_name is the name of the reader you want to connect to. It is of the form "GCR 410 0 0".

  Please note that the list of available readers can be obtained with a call to $hContext->ListReaders(). (See the section named 'PCSC METHODS' in the PCSC(3pm) man page for more informations on ListReaders).

  - $share_mode is the desired mode of connection to the reader. It can be any of the following: $PCSC::SCARD_SHARE_EXCLUSIVE the application do not share the reader $PCSC::SCARD_SHARE_SHARED the application will allow others to share the reader. $PCSC::SCARD_SHARE_DIRECT (not used by PCSClite)

  - $prefered_protocol is the protocol which should be used if possible. If the protocol is not available, an other protocol will be used and $hCard->{dwProtocol} will be set accordingly. Both $hCard->{dwProtocol} and $prefered_protocol accept the following values: $PCSC::SCARD_PROTOCOL_T0 the T=0 protocol $PCSC::SCARD_PROTOCOL_T1 the T=1 protocol $PCSC::SCARD_PROTOCOL_RAW raw protocol

• $hCard = new PCSC::Card ($hContext, $reader_name, $share_mode);

  This method is equivalent to: $hCard = new PCSC::Card ($hContext, $reader_name, $share_mode, $PCSC::SCARD_PROTOCOL_T0);

• $hCard = new PCSC::Card ($hContext, $reader_name);

  This method is equivalent to: $hCard = new PCSC::Card ($hContext, $reader_name, $PCSC::SCARD_SHARE_EXCLUSIVE, $PCSC::SCARD_PROTOCOL_T0);

CONSTRUCTION FAILURE

PCSC::Card constructors return an undef value when the object can not be created. $PCSC::errno can be used to get more information about the error. (See section "ERROR HANDLING" in PCSC(3pm) man page for more information)

PCSC::Card METHODS

Here is a list of all the methods that can be used with a PCSC::Card object.

• $hCard->Connect($reader_name, $share_mode, $prefered_protocol);

  Connect() can be used to connect to the reader and its smartcard if the connection has not been established yet. The default constructor can establish the connection if given enougth parameters.

  The return value upon successful completion is the protocol used to communicate with the smartcard. It can be any of the following: $PCSC::SCARD_PROTOCOL_T0 the T=0 protocol $PCSC::SCARD_PROTOCOL_T1 the T=1 protocol $PCSC::SCARD_PROTOCOL_RAW raw protocol

  - $reader_name is mandatory. It contains the name of the reader you want to connect to. It is of the form "GCR 410 0 0".

  Please note that the list of available readers can be obtained with a call to $hContext->ListReaders(). (See the section named 'PCSC METHODS' in the PCSC(3pm) man page for more informations on ListReaders).

  - $share_mode is the desired mode of connection to the reader. It can be any of the following: $PCSC::SCARD_SHARE_EXCLUSIVE the application do not share the reader $PCSC::SCARD_SHARE_SHARED the application will allow others to share the reader. $PCSC::SCARD_SHARE_DIRECT (not used by PCSClite)

  - $prefered_protocol is the protocol which should be used if possible. If the protocol is not available, an other protocol will be used and $hCard->{dwProtocol} will be set accordingly. $prefered_protocol accept the following values: $PCSC::SCARD_PROTOCOL_T0 the T=0 protocol $PCSC::SCARD_PROTOCOL_T1 the T=1 protocol $PCSC::SCARD_PROTOCOL_RAW raw protocol

• $hCard->Connect($reader_name, $share_mode);

  This method is equivalent to: $hCard->Connect($reader_name, $share_mode, $PCSC::SCARD_PROTOCOL_T0);

• $hCard->Connect($reader_name);

  This method is equivalent to: $hCard->Connect($reader_name, $PCSC::SCARD_SHARE_EXCLUSIVE, $PCSC::SCARD_PROTOCOL_T0);

• $hCard->Reconnect($share_mode, $prefered_protocol, $initialization);

  Reconnect() can be used to re-nogociate an already opened connection. This implies that the PCSC::Card object is connected and has $hCard->{hCard} set accordingly. Reconnecting to a smartcard is used to change the share mode and the current protocol.

  The return value upon successful completion is the protocol choosed to communicate with the smartcard. It can be any of the following: $PCSC::SCARD_PROTOCOL_T0 the T=0 protocol $PCSC::SCARD_PROTOCOL_T1 the T=1 protocol $PCSC::SCARD_PROTOCOL_RAW raw protocol

  - $share_mode is the desired mode of connection to the reader. It can be any of the following: $PCSC::SCARD_SHARE_EXCLUSIVE the application do not share the reader $PCSC::SCARD_SHARE_SHARED the application will allow others to share the reader. $PCSC::SCARD_SHARE_DIRECT (not used by PCSClite)

  - $prefered_protocol is the protocol which should be used if possible. If the protocol is not available, an other protocol will be used and $hCard->{dwProtocol} will be set accordingly. $prefered_protocol accept the following values: $PCSC::SCARD_PROTOCOL_T0 the T=0 protocol $PCSC::SCARD_PROTOCOL_T1 the T=1 protocol $PCSC::SCARD_PROTOCOL_RAW raw protocol

  - $initialization is the action to take when reconnecting to the smartcard. It can be any of the following values: $PCSC::SCARD_LEAVE_CARD do nothing on close $PCSC::SCARD_RESET_CARD reset on close $PCSC::SCARD_UNPOWER_CARD power down on close $PCSC::SCARD_EJECT_CARD eject on close

• $hCard->Reconnect($share_mode, $prefered_protocol);

  This method is equivalent to: $hCard->Reconnect($share_mode, $prefered_protocol, $PCSC::SCARD_LEAVE_CARD);

• $hCard->Reconnect($share_mode);

  This method is equivalent to: $hCard->Reconnect($share_mode, $PCSC::SCARD_PROTOCOL_T0, $PCSC::SCARD_LEAVE_CARD);

• $hCard->Reconnect();

  This method is equivalent to: $hCard->Reconnect($PCSC::SCARD_SHARE_EXCLUSIVE, $PCSC::SCARD_PROTOCOL_T0, $PCSC::SCARD_LEAVE_CARD);

• $hCard->Disconnect($initialization);

  Disconnect() closes the connection to the smartcard reader. It returns true upon successful completion or undef otherwise. $hCard->{hContext} will be set to undef if the connection is successfuly closed.

  - $initialization is the action to take when reconnecting to the smartcard. It can be any of the following values: $PCSC::SCARD_LEAVE_CARD do nothing on close $PCSC::SCARD_RESET_CARD reset on close $PCSC::SCARD_UNPOWER_CARD power down on close $PCSC::SCARD_EJECT_CARD eject on close

• $hCard->Disconnect();

  This method is equivalent to: $hCard->Disconnect($PCSC::SCARD_EJECT_CARD);

• $hCard->Status();

  Status() returns the current status of the connection to a smartcard. It is used to retrieve the ATR (Answer To Reset) value as well as the protocol being used to communicate.

  The return value is the undef value if an error occurs. In such case, $! should be set with a string describing the error. Upon successful completion Status returns an array as follows: ($reader_name, $reader_state, $protocol, \@atr)

  - $reader_name is a string containing the name of the reader

  - $reader_state is a scalar containing the current state of the reader. It can be any combination of the following values: $PCSC::SCARD_UNKNOWN unknown state $PCSC::SCARD_ABSENT card is absent $PCSC::SCARD_PRESENT card is present $PCSC::SCARD_SWALLOWED card not powered $PCSC::SCARD_POWERED card is powered $PCSC::SCARD_NEGOTIABLE ready for PTS $PCSC::SCARD_SPECIFIC PTS has been set

  - $protocol is the protocol being used. It can be any of the following values: $PCSC::SCARD_PROTOCOL_T0, $PCSC::SCARD_PROTOCOL_T1, $PCSC::SCARD_PROTOCOL_RAW

  - \@atr is a reference to an array containing the ATR. Each cell of the array contains one byte of the ATR. This parameter is however optional as the ATR may not be available under some circumstances. For instance when the card is not inserted, no ATR can be returned and this parameter will be 'undef'

• $hCard->Transmit(\@data);

  Transmit() is used to exchange data with the card.

  It returns a reference to an anonymous array holding the answer to the emitted data. In case of an error, the reference is the undef value.

  - \@data is a reference to the data to be sent to the card.

  Here is a small sample of how to use transmit:

   $SendData = [0x00,0xA4,0x01,0x00, 0x02, 0x01, 0x00];
   $RecvData = $hCard->Transmit($SendData);
  
   print "  Recv = ";
   foreach $tmpVal (@{$RecvData}) {
       printf ("%02X ", $tmpVal);
   } print "\n";

• $hCard->BeginTransaction();

  BeginTransaction() is used to temporarily get exclusive control over the smart card.

  It returns TRUE upon succesful completion and FALSE otherwise. $PCSC::errno should be set accordingly in case of an error (See section "ERROR HANDLING" in PCSC(3pm) man page for more information)

• $hCard->EndTransaction($disposition);

  EndTransaction() is used to end a transaction initiated with BeginTransaction().

  It returns TRUE upon succesful completion and FALSE otherwise. $PCSC::errno should be set accordingly in case of an error (See section "ERROR HANDLING" in PCSC(3pm) man page for more information)

  - $disposition is the action to take when ending the transaction. It can be any of the following values: $PCSC::SCARD_LEAVE_CARD do nothing on close $PCSC::SCARD_RESET_CARD reset on close $PCSC::SCARD_UNPOWER_CARD power down on close $PCSC::SCARD_EJECT_CARD eject on close

• $hCard->EndTransaction();

  This method is equivalent to: $hCard->EndTransaction($PCSC::SCARD_LEAVE_CARD);

SEE ALSO

PCSClite manpage has useful informations about PCSClite. PCSC(3pm) manpage holds all the necessary information to create the PCSC object which will be the basis of PCSC::Card.

COPYRIGHT

Please see the copyright file included with your distribution

AUTHORS / ACKNOWLEDGEMENT

 Lionel VICTOR <lionel.victor@unforgettable.com>
               <lionel.victor@free.fr>