net.rim.device.api.crypto.DHPrivateKey
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java.lang.Object
public final class DHPrivateKey
Represents a private key in an Diffie-Hellman system.
Diffie-Hellman ( DH ) is defined in PKCS #3 and various other spots.
DHCryptoSystem,
DHPublicKey| Constructor Summary | ||
|---|---|---|
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DHPrivateKey(DHCryptoSystem cryptoSystem,
byte[] data)
Constructs a DHPrivateKey object under the given crypto system using the given
data as the private key's mathematical representation. |
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DHPrivateKey(DHCryptoSystem cryptoSystem,
CryptoTokenPrivateKeyData cryptoTokenData)
Constructs a DHPrivateKey object under the given crypto system associated with the given crypto token. |
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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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String |
getAlgorithm()
Returns a string containing the name of the algorithm associated with this key ("DH"). |
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CryptoSystem |
getCryptoSystem()
Returns the crypto system associated with the key. |
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CryptoTokenPrivateKeyData |
getCryptoTokenData()
Returns the crypto token data. |
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DHCryptoSystem |
getDHCryptoSystem()
Returns the DH crypto system associated with the key. |
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DHCryptoToken |
getDHCryptoToken()
Returns the DH crypto token. |
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byte[] |
getPrivateKeyData()
Returns a copy of the private key data. |
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byte[] |
getPublicKeyData()
Returns a copy of the associated public key data. |
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int |
hashCode()
Returns a hash code value for the object. |
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void |
verify()
Checks the integrity of the associated CryptoSystem, and then
performs integrity checks on the private key parameters. |
| Methods inherited from class java.lang.Object |
|---|
getClass, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public DHPrivateKey(DHCryptoSystem cryptoSystem,
byte[] data)
throws InvalidKeyException,
CryptoTokenException,
CryptoUnsupportedOperationException
DHPrivateKey object under the given crypto system using the given
data as the private key's mathematical representation.
cryptoSystem - A DHCryptoSystem that contains parameters for the DH computations.data - The keying material that is to be used for all private key operations.
InvalidKeyException - Thrown if the key data is invalid.
CryptoTokenException - Thrown if an error occurs with the crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.
public DHPrivateKey(DHCryptoSystem cryptoSystem,
CryptoTokenPrivateKeyData cryptoTokenData)
DHPrivateKey object under the given crypto system associated with the given crypto token.
cryptoSystem - A DHCryptoSystem that contains parameters for the DH computations.cryptoTokenData - The data associated with the crypto token.| Method Detail |
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public String getAlgorithm()
This method will always return the String "DH".
getAlgorithm in interface Keypublic DHCryptoSystem getDHCryptoSystem()
getDHCryptoSystem in interface DHKeypublic CryptoSystem getCryptoSystem()
getCryptoSystem in interface PrivateKey
public void verify()
throws InvalidKeyException,
InvalidCryptoSystemException,
CryptoTokenException,
CryptoUnsupportedOperationException
CryptoSystem, and then
performs integrity checks on the private key parameters. The CryptoSystem
is checked via its verify() method, and then the following
are verified:
verify in interface PrivateKeyInvalidKeyException - Thrown if the private key parameters are invalid.
InvalidCryptoSystemException - Thrown if the crypto system
parameters are invalid.
CryptoTokenException - Thrown if an error occurs with the crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.
public byte[] getPrivateKeyData()
throws CryptoTokenException,
CryptoUnsupportedOperationException
CryptoTokenException - Thrown if an error occurs with the crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.
public byte[] getPublicKeyData()
throws CryptoTokenException,
CryptoUnsupportedOperationException
CryptoTokenException - Thrown if an error occurs with the crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.public DHCryptoToken getDHCryptoToken()
public CryptoTokenPrivateKeyData getCryptoTokenData()
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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