net.rim.device.api.crypto
Class DESKey

java.lang.Object
  extended by net.rim.device.api.crypto.DESKey
All Implemented Interfaces:
Key, SymmetricKey, Persistable, Persistable

public final class DESKey
extends Object
implements SymmetricKey, Persistable

Creates a DES key.

For more information regarding DES, see the javadoc description of the DESDecryptor and DESEncryptor engines.

For information on cryptographic algorithms, see Crypto Algorithms.

Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

Field Summary
Category: Signed static int LENGTH
          The size of the key represented in bytes, namely 8 bytes.
 
Constructor Summary
Category: Signed DESKey()
          Creates a new random DESKey object and stores the keying material in the object.
Category: Signed DESKey(byte[] data)
          Creates a DESKey object using as much of the key data as necessary.
Category: Signed DESKey(byte[] data, int offset)
          Creates a DESKey object using as much of the key data as necessary.
Category: Signed DESKey(DESCryptoToken cryptoToken, byte[] data, int offset)
          Creates a DESKey object using as much of the key data as necessary.
Category: Signed DESKey(DESCryptoToken cryptoToken, CryptoTokenSymmetricKeyData cryptoTokenData)
          Creates a DESKey object.
 
Method Summary
Category: Signed  boolean equals(Object obj)
          Indicates whether some other object is "equal to" this one.
Category: Signed  String getAlgorithm()
          Returns a string containing the name of the algorithm associated with this key ("DES").
Category: Signed  int getBitLength()
          Returns the number of bits that make up the actual keying material ( for example parity bits aren't counted ).
Category: Signed  CryptoTokenSymmetricKeyData getCryptoTokenData()
          Returns the data associated with the crypto token.
Category: Signed  DESCryptoToken getDESCryptoToken()
          Returns the crypto token associated with the key.
Category: Signed  byte[] getData()
          Returns a copy of the byte array representing the key.
Category: Signed  int getLength()
          Returns the length of the key in bytes.
Category: Signed  SymmetricCryptoToken getSymmetricCryptoToken()
          Returns the crypto token associated with this key.
Category: Signed  int hashCode()
          Returns a hash code value for the object.
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, toString, wait, wait, wait
 



Field Detail

LENGTH

public static final int LENGTH
The size of the key represented in bytes, namely 8 bytes.

See Also:
Constant Field Values
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0


Constructor Detail

DESKey

public DESKey()
Creates a new random DESKey object and stores the keying material in the object.

Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

DESKey

public DESKey(byte[] data)
Creates a DESKey object using as much of the key data as necessary.

Parameters:
data - A byte array containing the data to be used as the key.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

DESKey

public DESKey(byte[] data,
              int offset)
Creates a DESKey object using as much of the key data as necessary.

Parameters:
data - A byte array containing the bytes to use as data for the key.
offset - The offset, or start position, of the key data within the array.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

DESKey

public DESKey(DESCryptoToken cryptoToken,
              byte[] data,
              int offset)
       throws CryptoTokenException,
              CryptoUnsupportedOperationException
Creates a DESKey object using as much of the key data as necessary.

Parameters:
cryptoToken - The crypto token that protects the key.
data - The bytes to use as data for the key.
offset - The offset, or start position, of the key data within the array.
Throws:
CryptoTokenException - Thrown if there was an error communicating with the token.
CryptoUnsupportedOperationException - Thrown if a call is made to an unsupported operation.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

DESKey

public DESKey(DESCryptoToken cryptoToken,
              CryptoTokenSymmetricKeyData cryptoTokenData)
Creates a DESKey object.

Parameters:
cryptoToken - The token that protects the key.
cryptoTokenData - The data associated with the crypto token.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0


Method Detail

getSymmetricCryptoToken

public SymmetricCryptoToken getSymmetricCryptoToken()
Returns the crypto token associated with this key.

Specified by:
getSymmetricCryptoToken in interface SymmetricKey
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

getDESCryptoToken

public DESCryptoToken getDESCryptoToken()
Returns the crypto token associated with the key.

Returns:
The DES crypto token.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

getCryptoTokenData

public CryptoTokenSymmetricKeyData getCryptoTokenData()
Returns the data associated with the crypto token.

Returns:
The symmetric key data contained on the crypto token.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

getAlgorithm

public String getAlgorithm()
Returns a string containing the name of the algorithm associated with this key ("DES").

This method will always return the String "DES".

Specified by:
getAlgorithm in interface Key
Returns:
A String representing the name of the algorithm.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

getLength

public int getLength()
              throws CryptoTokenException
Description copied from interface: SymmetricKey
Returns the length of the key in bytes.

Specified by:
getLength in interface SymmetricKey
Returns:
An integer that represents the number of bytes.
Throws:
CryptoTokenException - Thrown when a problem occurs with a crypto token or the crypto token is invalid.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

getBitLength

public int getBitLength()
                 throws CryptoTokenException
Returns the number of bits that make up the actual keying material ( for example parity bits aren't counted ). In this case it is 56 bits since DES has 8 bits of parity.

Specified by:
getBitLength in interface SymmetricKey
Returns:
An integer that represents the number of bits in the key.
Throws:
CryptoTokenException - Thrown when a problem occurs with a crypto token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown when a call is made to an unsupported operation.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

getData

public byte[] getData()
               throws CryptoTokenException,
                      CryptoUnsupportedOperationException
Description copied from interface: SymmetricKey
Returns a copy of the byte array representing the key.

Specified by:
getData in interface SymmetricKey
Returns:
A byte array containing the key.
Throws:
CryptoTokenException - Thrown when a problem occurs with a crypto token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown when a call is made to an unsupported operation.
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

hashCode

public int hashCode()
Description copied from class: Object
Returns a hash code value for the object. This method is supported for the benefit of hashtables such as those provided by java.util.Hashtable.

The general contract of hashCode is:

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.)

Overrides:
hashCode in class Object
Returns:
a hash code value for this object.
See Also:
Object.equals(java.lang.Object), Hashtable
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0

equals

public boolean equals(Object obj)
Description copied from class: Object
Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation:

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any reference values x and y, this method returns true if and only if x and y refer to the same object (x==y has the value true).

Overrides:
equals in class Object
Parameters:
obj - the reference object with which to compare.
Returns:
true if this object is the same as the obj argument; false otherwise.
See Also:
Boolean.hashCode(), Hashtable
Category:
Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
Since:
BlackBerry API 3.6.0





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