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java.lang.Object | +--net.rim.device.api.crypto.InitializationVector
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.
| Constructor Summary | ||
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InitializationVector(byte[] data)
Creates an InitializationVector object using the specified data. |
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InitializationVector(byte[] data,
int offset,
int length)
Creates an InitializationVector object using the specified section of the data. |
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InitializationVector(int length)
Creates an InitializationVector object with the specified number of bytes of random data. |
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| Method Summary | ||
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boolean |
equals(Object obj)
Indicates whether some other object is "equal to" this one. |
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byte[] |
getData()
Returns a copy of the initialization vector data. |
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int |
getLength()
Returns the length of the initialization vector in bytes. |
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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 |
public InitializationVector(byte[] data)
InitializationVector object using the specified data.
data - A byte array containing the initialization vector data to use.
public InitializationVector(byte[] data,
int offset,
int length)
InitializationVector object using the specified section of the data.
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.public InitializationVector(int length)
InitializationVector object with the specified number of bytes of random data.
length - The number of bytes to use.| Method Detail |
public boolean equals(Object obj)
Object
The equals method implements an equivalence relation:
x,
x.equals(x) should return true.
x and
y, x.equals(y) should return
true if and only if y.equals(x) returns
true.
x,
y, and z, if x.equals(y)
returns true and y.equals(z) returns
true, then x.equals(z) should return
true.
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.
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).
Objectobj - the reference object with which to compare.true if this object is the same as the obj
argument; false otherwise.Boolean.hashCode(),
Hashtablepublic byte[] getData()
public int getLength()
public int hashCode()
Objectjava.util.Hashtable.
The general contract of hashCode is:
hashCode method on each of
the two objects must produce the same integer result.
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.)
ObjectObject.equals(java.lang.Object),
Hashtable
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