Signature.getInstance
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public static Signature getInstance( String algorithm ) throws NoSuchAlgorithmException
Parameters
- algorithm
- the standard name of the algorithm requested.
See Appendix A in the
Java Cryptography Architecture API Specification & Reference
for information about standard algorithm names.
Returns
the new Signature object.
Description
Generates a Signature object that implements the specified
algorithm. If the default provider package contains a Signature
subclass implementing the algorithm, an instance of that subclass
is returned. If the algorithm is not available in the default
package, other packages are searched.
Exceptions
NoSuchAlgorithmException
if the algorithm is
not available in the environment.
public static Signature getInstance( String algorithm,
String provider ) throws NoSuchAlgorithmException, NoSuchProviderException
Parameters
- algorithm
- the name of the algorithm requested.
See Appendix A in the
Java Cryptography Architecture API Specification & Reference
for information about standard algorithm names.
- provider
- the name of the provider.
Returns
the new Signature object.
Description
Generates a Signature object implementing the specified
algorithm, as supplied from the specified provider, if such an
algorithm is available from the provider.
Exceptions
NoSuchAlgorithmException
if the algorithm is
not available in the package supplied by the requested
provider.
Exceptions
NoSuchProviderException
if the provider is not
available in the environment.
See Also
Provider