Blackberry Java Development Environment 4.6.0 Manuel - Page 10

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Cryptographic Smart Card Driver Development Guide

Task

Retrieve random data from

the internal random number

generator of the smart card.

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

Task

Create a token class.

Determine if the token object can perform

authentication for a BlackBerry device

user.

Determine if the token object supports the

CryptoSystem

current

Steps

CryptoSmartCardSession.getRandomBytesImpl(int maxNumBytes)

Implement

Steps

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

final class MyRSACryptoToken extends SmartCardRSACryptoToken

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

authentication information.

public boolean providesUserAuthentication()

{

return true;

}

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

CryptoSystem

current

public boolean isSupported(CryptoSystem cryptoSystem, int operation)

{

return (operation == PRIVATE_KEY_OPERATION);

}

class.