Class java.security.Signer





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Class java.security.Signer


java.lang.Object
|
+----java.security.Identity
|
+----java.security.Signer



public abstract class Signer
extends Identity

This class is used to represent an Identity that can also digitally
sign data.
The management of a signer's private keys is an important and
sensitive issue that should be handled by subclasses as appropriate
to their intended use.


See Also:
Identity








Signer()

Creates a signer.

Signer(String)

Creates a signer with the specified identity name.

Signer(String, IdentityScope)

Creates a signer with the specified identity name and scope.






getPrivateKey()
Returns this signer's private key.

setKeyPair(KeyPair)
Sets the key pair (public key and private key) for this signer.

toString()
Returns a string of information about the signer.







Signer

protected Signer()


Creates a signer. This constructor should only be used for
serialization.



Signer

public Signer(String name)


Creates a signer with the specified identity name.


Parameters:
name - the identity name.



Signer

public Signer(String name,
IdentityScope scope) throws KeyManagementException


Creates a signer with the specified identity name and scope.


Parameters:
name - the identity name.
scope - the scope of the identity.
Throws: KeyManagementException
if there is already an identity
with the same name in the scope.







getPrivateKey

public PrivateKey getPrivateKey()


Returns this signer's private key.


Returns:
this signer's private key, or null if the private key has
not yet been set.



setKeyPair

public final void setKeyPair(KeyPair pair) throws InvalidParameterException, KeyException


Sets the key pair (public key and private key) for this signer.


Parameters:
pair - an initialized key pair.
Throws: InvalidParameterException
if the key pair is not
properly initialized.
Throws: KeyException
if the key pair cannot be set for any
other reason.



toString

public String toString()


Returns a string of information about the signer.


Returns:
a string of information about the signer.
Overrides:
toString in class Identity




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