SHOW Signed SHOW CryptoExtensionAPI
 

net.rim.device.api.crypto
Class SkipjackKey

java.lang.Object
  |
  +--net.rim.device.api.crypto.SkipjackKey
All Implemented Interfaces:
Key, Persistable, Persistable, SymmetricKey

public final class SkipjackKey
extends Object
implements SymmetricKey, Persistable

Creates a SkipjackKey object.

Skipjack is an algorithm developed by the National Security Agency (NSA) in the United States. It operates with an 80 bit key length and a 64 bit block length. The specification for Skipjack can be found here.

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:
JDE 3.6.0

Field Summary
 Category: Signed static int LENGTH
          Represents the size of the key in bytes, ie 10 bytes.
 
Constructor Summary
 Category: Signed SkipjackKey()
          Creates a new random SkipJackKey object and stores the key material in the object.
 Category: Signed SkipjackKey(byte[] data)
          Creates a SkipjackKey object using as much of the specified data as necessary.
 Category: Signed SkipjackKey(byte[] data, int offset)
          Creates a SkipjackKey object using as much of the specified data as necessary.
 Category: CryptoExtensionAPI Category: Signed SkipjackKey(SkipjackCryptoToken cryptoToken, byte[] data, int offset)
          Creates a SkipjackKey object using as much of the specified data as necessary.
 Category: CryptoExtensionAPI Category: Signed SkipjackKey(SkipjackCryptoToken cryptoToken, CryptoTokenSymmetricKeyData cryptoTokenData)
          Creates a SkipjackKey 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 ("Skipjack").
 Category: Signed  int getBitLength()
          Returns the number of bits that make up the actual keying material ( for example parity bits are not counted ).
 Category: CryptoExtensionAPI Category: Signed  CryptoTokenSymmetricKeyData getCryptoTokenData()
          Returns the skipjack crypto token data.
 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: CryptoExtensionAPI Category: Signed  SkipjackCryptoToken getSkipjackCryptoToken()
          Returns the skipjack crypto token.
 Category: CryptoExtensionAPI 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
Represents the size of the key in bytes, ie 10 bytes.
Since:
JDE 3.6.0
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.
Constructor Detail

SkipjackKey

public SkipjackKey()
Creates a new random SkipJackKey object and stores the key material in the object.
Since:
JDE 3.6.0
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.

SkipjackKey

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

Parameters:
data - The bytes to use as key data.
Since:
JDE 3.6.0
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.

SkipjackKey

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

Parameters:
data - The bytes to use as key data.
offset - The offset, or initial position, of the key data within the array.
Since:
JDE 3.6.0
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.

SkipjackKey

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

Parameters:
cryptoToken - The crypto token that protects the key.
data - A byte array containing the bytes to use as key data.
offset - The starting offset of the key data.
Throws:
CryptoTokenException - Thrown if an error occurs with a crypto token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to an unsupported operation.
Since:
JDE 3.6.0
Category:
CryptoExtensionAPI: This element is part of the Crypto Extension API. These APIs are intended for parties interested in extending the security provider frameworks, such as integrating a new security medium.
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.

SkipjackKey

public SkipjackKey(SkipjackCryptoToken cryptoToken,
                   CryptoTokenSymmetricKeyData cryptoTokenData)
Creates a SkipjackKey object.

Parameters:
cryptoToken - The crypto token that protects the key.
cryptoTokenData - The data associated with the crypto token.
Since:
JDE 3.6.0
Category:
CryptoExtensionAPI: This element is part of the Crypto Extension API. These APIs are intended for parties interested in extending the security provider frameworks, such as integrating a new security medium.
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.
Method Detail

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:

  • It is reflexive: for any reference value x, x.equals(x) should return true.
  • It is symmetric: for any reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the object is modified.
  • For any non-null reference value x, x.equals(null) should return false.

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
Since:
JDE 3.6.0

Following copied from 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.

getAlgorithm

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

This method will always return the String "Skipjack".

Returns:
A String that specifies the name of the algorithm.
Since:
JDE 3.6.0
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.

getBitLength

public int getBitLength()
                 throws CryptoTokenException,
                        CryptoUnsupportedOperationException
Description copied from interface: SymmetricKey
Returns the number of bits that make up the actual keying material ( for example parity bits are not counted ).

Since:
JDE 3.6.0

Following copied from 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.

getCryptoTokenData

public CryptoTokenSymmetricKeyData getCryptoTokenData()
Returns the skipjack crypto token data.

Returns:
A SkipjackCryptoToken data.
Since:
JDE 3.6.0
Category:
CryptoExtensionAPI: This element is part of the Crypto Extension API. These APIs are intended for parties interested in extending the security provider frameworks, such as integrating a new security medium.
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.

getData

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

Since:
JDE 3.6.0

Following copied from 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.

getLength

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

Since:
JDE 3.6.0

Following copied from 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.
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.

getSkipjackCryptoToken

public SkipjackCryptoToken getSkipjackCryptoToken()
Returns the skipjack crypto token.

Returns:
A SkipjackCryptoToken.
Since:
JDE 3.6.0
Category:
CryptoExtensionAPI: This element is part of the Crypto Extension API. These APIs are intended for parties interested in extending the security provider frameworks, such as integrating a new security medium.
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.

getSymmetricCryptoToken

public SymmetricCryptoToken getSymmetricCryptoToken()
Returns the crypto token associated with this key.
Since:
JDE 3.6.0
Category:
CryptoExtensionAPI: This element is part of the Crypto Extension API. These APIs are intended for parties interested in extending the security provider frameworks, such as integrating a new security medium.
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.

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:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the Object.equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hashtables.

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
Since:
JDE 3.6.0

Following copied from 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.



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