com.goldencode.p2j.util

Class CryptoUtils.CipherParams

java.lang.Object

com.goldencode.p2j.util.CryptoUtils.CipherParams

Enclosing class:

CryptoUtils

public static class CryptoUtils.CipherParams
extends java.lang.Object

Symmetric cipher parameters

Field Summary

Fields

Modifier and Type	Field and Description
private CryptoUtils.CipherEngine	engine Cipher algorithm name
private int	ivSize Cipher IV size
private int	keySize Cipher key size
private CryptoUtils.CipherMode	mode Cipher algorithm mode

Constructor Summary

Constructors

Constructor and Description
CipherParams(java.lang.String spec) Constructor which creates CipherParams instance for a 4GL style spec string

Method Summary

Modifier and Type	Method and Description
javax.crypto.Cipher	cipher() Get a new Cipher instance for the specified parameters
CryptoUtils.CipherEngine	getEngine() Get cipher code
int	getIvSize() Get IV size in bytes
int	getKeySize() Get key size in bytes
CryptoUtils.CipherMode	getMode() Get cipher mode
byte[]	newIV() Get empty byte array of the required IV size
byte[]	newKey() Get empty byte array of the required key size
byte[]	process(byte[] data, int mode, byte[] key, byte[] iv) Encrypt/Decript byte array
java.lang.String	toString() return String representation of the CipherParams instance

Methods inherited from class java.lang.Object

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

Field Detail

engine

private final CryptoUtils.CipherEngine engine

Cipher algorithm name

mode

private final CryptoUtils.CipherMode mode

Cipher algorithm mode

keySize

private final int keySize

Cipher key size

ivSize

private final int ivSize

Cipher IV size

Constructor Detail

CipherParams

public CipherParams(java.lang.String spec)

Constructor which creates CipherParams instance for a 4GL style spec string

Parameters:

spec - A 4GL style spec string

Method Detail

getEngine

public CryptoUtils.CipherEngine getEngine()

Get cipher code

Returns:

cipher code

getMode

public CryptoUtils.CipherMode getMode()

Get cipher mode

Returns:

cipher mode

getKeySize

public int getKeySize()

Get key size in bytes

Returns:

key size in bytes

getIvSize

public int getIvSize()

Get IV size in bytes

Returns:

IV size in bytes

newIV

public byte[] newIV()

Get empty byte array of the required IV size

Returns:

empty byte array of the required IV size

newKey

public byte[] newKey()

Get empty byte array of the required key size

Returns:

empty byte array of the required key size

process

public byte[] process(byte[] data,
                      int mode,
                      byte[] key,
                      byte[] iv)
               throws java.security.NoSuchAlgorithmException,
                      java.security.NoSuchProviderException,
                      javax.crypto.NoSuchPaddingException,
                      java.security.InvalidKeyException,
                      java.security.InvalidAlgorithmParameterException,
                      javax.crypto.IllegalBlockSizeException,
                      javax.crypto.BadPaddingException

Encrypt/Decript byte array

Parameters:

data - source data

mode - operation mode

key - encryption/decryption key

iv - encryption/decryption IV

Returns:

the result of the encryption/decryption

Throws:

java.security.NoSuchAlgorithmException

java.security.NoSuchProviderException

javax.crypto.NoSuchPaddingException

java.security.InvalidKeyException

java.security.InvalidAlgorithmParameterException

javax.crypto.IllegalBlockSizeException

javax.crypto.BadPaddingException

toString

public java.lang.String toString()

return String representation of the CipherParams instance

Overrides:

toString in class java.lang.Object

cipher

public javax.crypto.Cipher cipher()
                           throws java.security.NoSuchAlgorithmException,
                                  java.security.NoSuchProviderException,
                                  javax.crypto.NoSuchPaddingException

Get a new Cipher instance for the specified parameters

Returns:

a new Cipher instance for the specified parameters

Throws:

java.security.NoSuchAlgorithmException

java.security.NoSuchProviderException

javax.crypto.NoSuchPaddingException