net.rim.device.api.crypto.DESKey
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java.lang.Object
public final class DESKey
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.
| Field Summary | ||
|---|---|---|
|
static int |
LENGTH
The size of the key represented in bytes, namely 8 bytes. |
| Constructor Summary | ||
|---|---|---|
|
DESKey()
Creates a new random DESKey object and stores the keying
material in the object. |
|
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DESKey(byte[] data)
Creates a DESKey object using as much of the key data as necessary. |
|
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DESKey(byte[] data,
int offset)
Creates a DESKey object using as much of the key data as necessary. |
|
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DESKey(DESCryptoToken cryptoToken,
byte[] data,
int offset)
Creates a DESKey object using as much of the key data as necessary. |
|
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DESKey(DESCryptoToken cryptoToken,
CryptoTokenSymmetricKeyData cryptoTokenData)
Creates a DESKey object. |
|
| Method Summary | ||
|---|---|---|
|
boolean |
equals(Object obj)
Indicates whether some other object is "equal to" this one. |
|
String |
getAlgorithm()
Returns a string containing the name of the algorithm associated with this key ("DES"). |
|
int |
getBitLength()
Returns the number of bits that make up the actual keying material ( for example parity bits aren't counted ). |
|
CryptoTokenSymmetricKeyData |
getCryptoTokenData()
Returns the data associated with the crypto token. |
|
DESCryptoToken |
getDESCryptoToken()
Returns the crypto token associated with the key. |
|
byte[] |
getData()
Returns a copy of the byte array representing the key. |
|
int |
getLength()
Returns the length of the key in bytes. |
|
SymmetricCryptoToken |
getSymmetricCryptoToken()
Returns the crypto token associated with this key. |
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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 |
| Field Detail |
|---|
public static final int LENGTH
| Constructor Detail |
|---|
public DESKey()
DESKey object and stores the keying
material in the object.
public DESKey(byte[] data)
DESKey object using as much of the key data as necessary.
data - A byte array containing the data to be used as the key.
public DESKey(byte[] data,
int offset)
DESKey object using as much of the key data as necessary.
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.
public DESKey(DESCryptoToken cryptoToken,
byte[] data,
int offset)
throws CryptoTokenException,
CryptoUnsupportedOperationException
DESKey object using as much of the key data as necessary.
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.
CryptoTokenException - Thrown if there was an error communicating
with the token.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.
public DESKey(DESCryptoToken cryptoToken,
CryptoTokenSymmetricKeyData cryptoTokenData)
DESKey object.
cryptoToken - The token that protects the key.cryptoTokenData - The data associated with the crypto token.| Method Detail |
|---|
public SymmetricCryptoToken getSymmetricCryptoToken()
getSymmetricCryptoToken in interface SymmetricKeypublic DESCryptoToken getDESCryptoToken()
public CryptoTokenSymmetricKeyData getCryptoTokenData()
public String getAlgorithm()
This method will always return the String "DES".
getAlgorithm in interface Key
public int getLength()
throws CryptoTokenException
SymmetricKey
getLength in interface SymmetricKeyCryptoTokenException - Thrown when a problem occurs with a crypto
token or the crypto token is invalid.
public int getBitLength()
throws CryptoTokenException
getBitLength in interface SymmetricKeyCryptoTokenException - 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.
public byte[] getData()
throws CryptoTokenException,
CryptoUnsupportedOperationException
SymmetricKey
getData in interface SymmetricKeyCryptoTokenException - 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.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.)
hashCode in class ObjectObject.equals(java.lang.Object),
Hashtablepublic 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).
equals in class Objectobj - the reference object with which to compare.
true if this object is the same as the obj
argument; false otherwise.Boolean.hashCode(),
Hashtable
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