net.rim.device.api.crypto
Class InitializationVector

java.lang.Object
  extended by net.rim.device.api.crypto.InitializationVector
All Implemented Interfaces:
Persistable

public final class InitializationVector
extends Object
implements Persistable

Represents an initialization vector (IV) for block cipher modes. The initialization vector adds randomness to the ciphertext. Thus if the same message is encrypted twice with the same key, the resulting ciphertexts will be different, as long as different initialization vectors are used.

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 Summary
Category: Signed InitializationVector(byte[] data)
          Creates an InitializationVector object using the specified data.
Category: Signed InitializationVector(byte[] data, int offset, int length)
          Creates an InitializationVector object using the specified section of the data.
Category: Signed InitializationVector(int length)
          Creates an InitializationVector object with the specified number of bytes of random data.
 
Method Summary
Category: Signed  boolean equals(Object obj)
          Indicates whether some other object is "equal to" this one.
Category: Signed  byte[] getData()
          Returns a copy of the initialization vector data.
Category: Signed  int getLength()
          Returns the length of the initialization vector in bytes.
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
 



Constructor Detail

InitializationVector

public InitializationVector(int length)
Creates an InitializationVector object with the specified number of bytes of random data.

Parameters:
length - The number of bytes to use.
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

InitializationVector

public InitializationVector(byte[] data)
Creates an InitializationVector object using the specified data.

Parameters:
data - A byte array containing the initialization vector data to use.
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

InitializationVector

public InitializationVector(byte[] data,
                            int offset,
                            int length)
Creates an InitializationVector object using the specified section of the data.

Parameters:
data - The array containing the IV data.
offset - the starting offset of the data in the array.
length - the length of data to use as the IV.
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

getLength

public int getLength()
Returns the length of the initialization vector in bytes.

Returns:
An integer that represents the number of bytes in the initialization vector.
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()
Returns a copy of the initialization vector data.

Returns:
A byte array containing a copy of the initialization vector.
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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