Blackbe;rry JAVA DEVELOPMENT ENVIRONMENT - - CRYPTOGRAPHIC SMART CARD DRIVER

BlackBerry Java Development

Environment

Version 4.6.0

Cryptographic Smart Card Driver Development Guide

BlackBerry Java Development Environment Version 4.6.0 Cryptographic Smart Card Driver Development Guide

Last modified: 6 October 2008

Part number: 12802084

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Contents

1Using smart cards................................................................................................................................................. 3

Smart cards........................................................................................................................................................ 3

Add support for smart cards .................................................................................................................... 3

Creating a cryptographic smart card driver ................................................................................................. 4

Set up the project for the cryptographic smart card driver ................................................................ 4

Design a cryptographic smart card driver............................................................................................. 4

Create a cryptographic session for a cryptographic smart card........................................................ 5

Create a cryptographic token for private key operations ................................................................... 6

Store the location of the private key file................................................................................................ 8

2Testing a cryptographic smart card driver...................................................................................................... 11

Set up the BlackBerry Device Simulator to test a cryptographic smart card driver...............................11

Set up a BlackBerry device to test a cryptographic smart card driver .....................................................11

Test the cryptographic smart card driver.....................................................................................................12

3Code samples .......................................................................................................................................................15

Code sample: Creating a cryptographic smart card object.......................................................................15

Code sample: Creating a cryptographic session for a cryptographic smart card driver ......................18

Code sample: Enabling a CryptoToken object for RSA operations using a private key.......................24

Code sample: Storing the location of a private key file on the smart card............................................28

Using smart cards

Smart cards

Add support for smart cards

You can use the net.rim.device.api.smartcard package and the net.rim.device.api.crypto package to

create smart card drivers that interact with smart cards and BlackBerry Smart Card Readers. The smart card API

was included in BlackBerry® Java® Development Environment Version 4.1. The

SmartCardProtocolErrorException API was added in BlackBerry JDE Version 4.2.

A cryptographic smart card driver that implements the smart card API can work with the S/MIME Support

Package for BlackBerry® smartphones on a BlackBerry smartphone with S/MIME support. A cryptographic smart

card driver can perform private key operations on the smart card such as signing and decrypting messages. A

cryptographic smart card driver does not require the S/MIME Support Package for BlackBerry smartphones to be

able to import certificates from the smart card, or to provide two-factor authentication for a BlackBerry device. See

BlackBerry with the S/MIME Support Package for more information on S/MIME.

The smart card API information included with BlackBerry JDE Version 4.2 or later contains some deprecated

elements. The deprecated elements provide backward compatibility for a cryptographic smart card driver

application created for a BlackBerry device that uses BlackBerry® Device Software Version 4.1.x. If you want to

create a cryptographic smart card driver for a BlackBerry device that is compatible with either BlackBerry Device

Software Version 4.1.x or Version 4.2 or later, you can use the deprecated elements to avoid having to create two

versions of the cryptographic smart card driver.

If you want to create a cryptographic smart card driver for a BlackBerry device that is compatible with BlackBerry

Device Software Version 4.2 or later, use the non-deprecated API items in the smart card API.

Smart cards

Creating a cryptographic smart card driver

Smart card scenarios Description

supported smart cards The BlackBerry® device supports the following smart cards:

•Common Access Card (CAC)

•SafeNet® Model 330 smart card

unsupported smart cards If your smart card is not a CAC or SafeNet smart card, use the smart card API to create a cryptographic smart

card driver to support your smart card.

Cryptographic Smart Card Driver Development Guide

Creating a cryptographic smart card driver

To create a cryptographic smart card driver for BlackBerry Device Software Version 4.1 or later, complete the

following tasks:

1. Set up the project for the cryptographic smart card driver.

2. Design a cryptographic smart card driver.

3. Create a cryptographic session for a cryptographic smart card driver.

4. Create a cryptographic token for private key operations.

5. Store the location of the private key file.

Set up the project for the cryptographic smart card driver

Design a cryptographic smart card driver

You must implement all of the following methods:

Task Steps

Set up the project. 1. Open the BlackBerry® Integrated Development Environment.

2. Create a new project for the cryptographic smart card driver.

Configure the project. 1. In the Workspace window, right-click the new project.

2. Select Properties.

3. On the Application tab, in the Project type field, type Library.

4. Select the Auto-run on startup check box.

5. In the Startup Tier field, select the 7(Last; 3rd party apps only) option.

6. Click OK.

Create a libMain() method. > In your extension of the CryptoSmartCard class, implement the libMain() method.

Task Steps

Enable a smart card driver to open a

cryptographic session with a smart card.

>ImplementSmartCard.openSessionImpl(SmartCardReaderSession).

Enable a smart card driver to verify if a smart

card is compatible with a specific Answer To

Reset (ATR) sequence.

>ImplementSmartCard.checkAnswerToResetImpl(AnswerToReset).

Enable a smart card driver to display

settings or properties.

>ImplementSmartCard.displaySettingsImpl(Object).

Enable a smart card driver to indicate

support for display settings.

>ImplementSmartCard.isDisplaySettingsAvailableImpl(Object).

Retrieve the capabilities of a smart card. >ImplementSmartCard.getCapabilitiesImpl(). The capabilites of a smart card

include the protocols the card supports, the baud rate, and the clock adjustment factors.

Retrieve the smart card type. >ImplementSmartCard.getLabelImpl().

1: Using smart cards

See “Code sample: Creating a cryptographic smart card object” on page 15 for more information.

Create a cryptographic session for a cryptographic smart card

Retrieve the names of the algorithms that

the smart card supports, for example (“RSA”,

“DSA”).

>ImplementCryptoSmartCard.getAlgorithms().

Retrieve a CryptoToken object that

supports the given algorithm.

>ImplementCryptoSmartCard.getCryptoToken(String).

Task Steps

Create a cryptographic smart

card session for a

cryptographic smart card.

> Extend the abstract CryptoSmartCardSession class.

Close a cryptographic smart

card session.

> Implement SmartCardSession.closeImpl().

Retrieve the maximum

number of login attempts.

> Implement SmartCardSession.getMaxLoginAttemptsImpl().

Retrieve the ID for the smart

card.

> Implement SmartCardSession.getSmartCardIDImpl().

Retrieve the remaining

number of login attempts.

> Implement SmartCardSession.getRemainingLoginAttemptsImpl().

Attempt to log in to the

cryptographic session using a

given password string.

> Implement SmartCardSession.loginImpl(String).

Retrieve the certificates from

the smart card.

> Perform one of the following steps:

•To create a cryptographic smart card driver that is compatible with BlackBerry Device Software Version

4.2 or later, implement CryptoSmartCardSession.getKeyStoreDataArrayImpl()as follows:

RSACryptoToken token = new MyRSACryptoToken();

RSACryptoSystem cryptoSystem = new RSACryptoSystem(token, 1024);

RSAPrivateKey privateKey;

PrivateKey privateKey = new RSAPrivateKey(cryptoSystem, new

MyCryptoTokenData());

•To create a cryptographic smart card driver that is compatible with BlackBerry Device Software Version 4.1

and Version 4.2 or later, and to include the cryptographic smart card driver in two-factor authentication,

implement the getKeyStoreDataArrayImp method as follows:

PrivateKey privateKey = CryptoSmartCardUtilities2.createPrivateKey(token,

1024, new MyCryptoTokenData());

Validate the input

parameters in the

cryptographic session.

> Perform one of the following steps:

•To create a cryptographic smart card driver that is compatible with BlackBerry Device Software Version

4.2 or later, in your implementation of the signDecrypt method, validate the parameters as follows:

int modulusLength = cryptoSystem.getModulusLength();

•To create a cryptographic smart card driver that is compatible with BlackBerry Device Software Version 4.1

and Version 4.2 or later, and to include the cryptographic smart card driver in two-factor authentication,

in your implementation of the signDecrypt method, validate the parameters as follows:

int modulusLength = (cryptoSystem.getBitLength()/8);

Task Steps

Cryptographic Smart Card Driver Development Guide

See “Code sample: Creating a cryptographic session for a cryptographic smart card driver” on page 18 for more

information.

Create a cryptographic token for private key operations

Retrieve random data from

the internal random number

generator of the smart card.

> Implement CryptoSmartCardSession.getRandomBytesImpl(int maxNumBytes).

Task Steps

Create a token class. > Perform one of the following steps:

•To create a cryptographic smart card driver that is compatible with BlackBerry Device

Software Version 4.2 or later, create a class that extends an RSA®, DSA, or ECC token class.

For example:

final class MyRSACryptoToken extends RSACryptoToken implements

Persistable

•To create a cryptographic smart card driver that is compatible with BlackBerry Device

Software Version 4.1 and Version 4.2 or later, and to include the cryptographic smart card

driver in two-factor authentication, create a class that extends the

SmartCardRSACryptoToken class.

final class MyRSACryptoToken extends SmartCardRSACryptoToken

Determine if the token object can perform

authentication for a BlackBerry device

user.

> Create a method that returns true if your token object prompts the BlackBerry device user for

authentication information.

public boolean providesUserAuthentication()

{

return true;

}

Determine if the token object supports the

current CryptoSystem.

> Create a method that returns a Boolean value that indicates if the token object supports the

current CryptoSystem.

public boolean isSupported(CryptoSystem cryptoSystem, int operation)

{

return (operation == PRIVATE_KEY_OPERATION);

}

Task Steps

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