com.licel.jcardsim.crypto

Class SymmetricKeyImpl

java.lang.Object

com.licel.jcardsim.crypto.KeyImpl

com.licel.jcardsim.crypto.SymmetricKeyImpl

All Implemented Interfaces:

KeyWithParameters, javacard.security.AESKey, javacard.security.DESKey, javacard.security.HMACKey, javacard.security.Key, javacard.security.SecretKey

public class SymmetricKeyImpl
extends KeyImpl
implements javacard.security.DESKey, javacard.security.AESKey, javacard.security.HMACKey

Implementation of secret key.

See Also:

DESKey, AESKey

Field Summary

Fields

Modifier and Type	Field and Description
protected ByteContainer	key

Fields inherited from class com.licel.jcardsim.crypto.KeyImpl

size, type

Constructor Summary

Constructors

Constructor and Description
SymmetricKeyImpl(byte keyType, short keySize) Create new instance of SymmetricKeyImpl

Method Summary

Modifier and Type	Method and Description
void	clearKey() Clears the key and sets its initialized state to false.
org.bouncycastle.crypto.BlockCipher	getCipher() Return the BouncyCastle BlockCipher for using with this key
byte	getKey(byte[] keyData, short kOff) Returns the Key data in plain text.
org.bouncycastle.crypto.KeyGenerationParameters	getKeyGenerationParameters(SecureRandom rnd) Get keypair generation parameters for use with BouncyCastle Crypto API
org.bouncycastle.crypto.CipherParameters	getParameters() Return the BouncyCastle KeyParameter of the key
boolean	isInitialized()
void	setKey(byte[] keyData, short kOff) Sets the Key data.
void	setKey(byte[] keyData, short kOff, short kLen) Sets the Key data.
void	setParameters(org.bouncycastle.crypto.CipherParameters params) Set cipher key for use with BouncyCastle Crypto API

Methods inherited from class com.licel.jcardsim.crypto.KeyImpl

getSize, getType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javacard.security.Key

getSize, getType

Field Detail

key

protected ByteContainer key

Constructor Detail

SymmetricKeyImpl

public SymmetricKeyImpl(byte keyType,
                        short keySize)

Create new instance of SymmetricKeyImpl

Parameters:

keyType - keyType interface

keySize - keySize in bits

See Also:

KeyBuilder

Method Detail

clearKey

public void clearKey()

Clears the key and sets its initialized state to false.

Specified by:

clearKey in interface javacard.security.Key

setKey

public void setKey(byte[] keyData,
                   short kOff)
            throws javacard.security.CryptoException,
                   NullPointerException,
                   ArrayIndexOutOfBoundsException

Sets the Key data.

Specified by:

setKey in interface javacard.security.AESKey

Specified by:

setKey in interface javacard.security.DESKey

Throws:

javacard.security.CryptoException

NullPointerException

ArrayIndexOutOfBoundsException

setKey

public void setKey(byte[] keyData,
                   short kOff,
                   short kLen)
            throws javacard.security.CryptoException,
                   NullPointerException,
                   ArrayIndexOutOfBoundsException

Sets the Key data.

Specified by:

setKey in interface javacard.security.HMACKey

Throws:

javacard.security.CryptoException

NullPointerException

ArrayIndexOutOfBoundsException

getKey

public byte getKey(byte[] keyData,
                   short kOff)

Returns the Key data in plain text.

Specified by:

getKey in interface javacard.security.AESKey

Specified by:

getKey in interface javacard.security.DESKey

Specified by:

getKey in interface javacard.security.HMACKey

setParameters

public void setParameters(org.bouncycastle.crypto.CipherParameters params)

Description copied from interface: KeyWithParameters

Set cipher key for use with BouncyCastle Crypto API

Specified by:

setParameters in interface KeyWithParameters

Parameters:

params - key parameters

getParameters

public org.bouncycastle.crypto.CipherParameters getParameters()
                                                       throws javacard.security.CryptoException

Return the BouncyCastle KeyParameter of the key

Specified by:

getParameters in interface KeyWithParameters

Returns:

parameter of the key

Throws:

javacard.security.CryptoException - if key not initialized

See Also:

KeyParameter

getCipher

public org.bouncycastle.crypto.BlockCipher getCipher()
                                              throws javacard.security.CryptoException

Return the BouncyCastle BlockCipher for using with this key

Returns:

BlockCipher for this key, or null for HMACKey

Throws:

javacard.security.CryptoException - if key not initialized

See Also:

BlockCipher

isInitialized

public boolean isInitialized()

Specified by:

isInitialized in interface javacard.security.Key

getKeyGenerationParameters

public org.bouncycastle.crypto.KeyGenerationParameters getKeyGenerationParameters(SecureRandom rnd)

Description copied from interface: KeyWithParameters

Get keypair generation parameters for use with BouncyCastle Crypto API

Specified by:

getKeyGenerationParameters in interface KeyWithParameters

Parameters:

rnd - Secure Random Generator

Returns:

key parameters