net.rim.device.api.crypto.DSAPrivateKey
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java.lang.Object
public final class DSAPrivateKey
Represents a private key in a DSA system.
The Digital Signature Algorithm ( DSA ) is defined in FIPS 186.
DSACryptoSystem,
DSAPublicKey| Constructor Summary | ||
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DSAPrivateKey(DSACryptoSystem cryptoSystem,
byte[] data)
Constructs an DSA private key object under the given crypto system using the given data as the private key's mathematical representation. |
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DSAPrivateKey(DSACryptoSystem cryptoSystem,
CryptoTokenPrivateKeyData cryptoTokenData)
Constructs an DSA private key 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 ("DSA"). |
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CryptoSystem |
getCryptoSystem()
Returns the crypto system associated with the key. |
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CryptoTokenPrivateKeyData |
getCryptoTokenData()
Returns the DSA crypto token. |
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DSACryptoSystem |
getDSACryptoSystem()
Returns the DSA crypto system associated with the key. |
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DSACryptoToken |
getDSACryptoToken()
Returns the DSA 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 |
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public DSAPrivateKey(DSACryptoSystem cryptoSystem,
byte[] data)
throws InvalidKeyException,
CryptoTokenException,
CryptoUnsupportedOperationException
cryptoSystem - a DSACryptoSystem that contains parameters for the DSA 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.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.
public DSAPrivateKey(DSACryptoSystem cryptoSystem,
CryptoTokenPrivateKeyData cryptoTokenData)
cryptoSystem - A DSACryptoSystem that contains parameters for the DL computations.cryptoTokenData - The token data.| Method Detail |
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public String getAlgorithm()
getAlgorithm in interface Keypublic CryptoSystem getCryptoSystem()
getCryptoSystem in interface PrivateKeypublic DSACryptoSystem getDSACryptoSystem()
getDSACryptoSystem in interface DSAKey
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 DSACryptoToken getDSACryptoToken()
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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