net.rim.device.api.crypto.RSAPublicKey
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java.lang.Object
public final class RSAPublicKey
The RSAPublicKey class represents a public key in an RSA system.
A description of the RSA algorithm can be found in PKCS #1 version 2.1. We support this definition of RSA.
RSACryptoSystem| Constructor Summary | ||
|---|---|---|
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RSAPublicKey(RSACryptoSystem cryptoSystem,
byte[] e,
byte[] n)
Constructs an RSAPublicKey object. |
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RSAPublicKey(RSACryptoSystem cryptoSystem,
CryptoTokenPublicKeyData cryptoTokenData)
Constructs an RSAPublicKey object. |
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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 the name of the algorithm associated with this key ("RSA"). |
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CryptoSystem |
getCryptoSystem()
Returns the CryptoSystem used by this public key. |
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CryptoTokenPublicKeyData |
getCryptoTokenData()
Returns the crypto token public key data. |
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byte[] |
getE()
Returns a copy of the public key exponent. |
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byte[] |
getN()
Returns a copy of the public key modulus. |
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RSACryptoSystem |
getRSACryptoSystem()
Returns the RSA crypto system associated with the key. |
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RSACryptoToken |
getRSACryptoToken()
Returns the crypto token. |
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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 public key parameters. |
| Methods inherited from class java.lang.Object |
|---|
getClass, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public RSAPublicKey(RSACryptoSystem cryptoSystem,
byte[] e,
byte[] n)
throws InvalidKeyException,
CryptoTokenException,
CryptoUnsupportedOperationException,
UnsupportedCryptoSystemException
RSAPublicKey object.
cryptoSystem - An RSACryptoSystem that contains parameters for the RSA computations.e - A byte array containing the public exponent.n - A byte array containing the modulus.
InvalidKeyException - Thrown if the key data is invalid.
CryptoTokenException - Thrown if an error occurs with a crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.
UnsupportedCryptoSystemException - Thrown if the specified crypto
system is invalid.
public RSAPublicKey(RSACryptoSystem cryptoSystem,
CryptoTokenPublicKeyData cryptoTokenData)
RSAPublicKey object.
cryptoSystem - An RSACryptoSystem that contains parameters for the RSA 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 "RSA".
getAlgorithm in interface Keypublic RSACryptoSystem getRSACryptoSystem()
RSAKey
getRSACryptoSystem in interface RSAKeyRSACryptoSystem.public CryptoSystem getCryptoSystem()
PublicKeyCryptoSystem used by this public key.
getCryptoSystem in interface PublicKey
public void verify()
throws InvalidKeyException,
InvalidCryptoSystemException
CryptoSystem, and then
performs integrity checks on the public key parameters. At present, there
are no checks for public key parameters, but some may be added in the future.
verify in interface PublicKeyInvalidKeyException - If the public key parameters are invalid
InvalidCryptoSystemException - If the crypto system parameters are invalid
public byte[] getE()
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[] getN()
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 RSACryptoToken getRSACryptoToken()
RSACryptoToken that protects the key.public CryptoTokenPublicKeyData 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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