xjava.security
public class IJCE extends Object
If you bundle this classfile, and the other classfiles in java.security.* that have names starting "IJCE_" with your application, these methods should work as documented even if linked against JavaSoft's implementation, so using them does not result in any loss of compatibility.
This class also defines the version number of the IJCE library:
Version numbers should be written as a triple of integers, not as a decimal. If the last number is omitted it is assumed to be 0, so for example, version 1.10 is after version 1.2.
The IJCE version number corresponding to this documentation is 1.1. (This is independent of the version numbers of any libraries that IJCE may be distributed with, such as Cryptix.)
Copyright © 1997
Systemics Ltd on behalf of the
Cryptix Development Team.
All rights reserved.
$Revision: 1.5 $
Since: IJCE 1.0.1
Method Summary | |
---|---|
static void | debug(String s)
Prints a debugging message that may be significant to a developer. |
static void | disableTracing(Object obj)
Disables tracing of SPI methods for obj. |
static boolean | enableTracing(Object obj, PrintWriter out)
Enables tracing of calls to SPI methods for the algorithm object
obj. |
static boolean | enableTracing(Object obj)
Enables tracing of calls to SPI methods for the algorithm object
obj, with Output sent to the default location, given by
getDebugOutput() . |
static void | error(String s)
Prints an error message that may be significant to a user. |
static Target | findTarget(String name)
Returns a Target that can be passed to
PrivilegeManager.enablePrivilege(...) , in order to request
permission for an action that requires the user's trust.
|
static Target | findTarget(String name, Object arg)
Reserved for future use, in case parameterized targets are needed. |
static String[] | getAlgorithms(Provider provider, String type)
Gets the standard names of all algorithms of the given type
implemented by a provider.
|
static String[] | getAlgorithms(String type)
Gets the standard names of all algorithms of the given type
implemented by any installed provider. |
static int | getDebugLevel(String label)
Returns the debug level for label. |
static PrintWriter | getDebugOutput()
Returns the PrintWriter that debugging Output is to be sent to. |
static Object | getImplementation(String algorithm, String type)
Returns an object configured to the specified type. |
static Object | getImplementation(String algorithm, String provider, String type)
Returns an object configured to the specified type. |
static Class | getImplementationClass(String algorithm, String type)
Given an algorithm name (which may be an alias) and type, returns the
corresponding algorithm class from any provider. |
static Class | getImplementationClass(String algorithm, String provider, String type)
Given an algorithm name (which may be an alias), a provider name, and
a type, returns the corresponding algorithm class. |
static int | getIntermediateVersion()
Returns the intermediate version of this release of IJCE. |
static int | getMajorVersion()
Returns the major version of this release of IJCE. |
static int | getMinorVersion()
Returns the minor version of this release of IJCE. |
static String | getReleaseDate()
Returns the release date of this version of IJCE, as a string in
the form "yyyy/mm/dd". |
static String | getStandardName(String algorithm, String type)
Expands the possible alias algorithm to a standard name. |
static String | getVersionString()
Returns a string describing this version of IJCE. |
static boolean | isProvidingJCA()
Returns true if IJCE is providing the implementations of the JCA classes
(MessageDigest, Signature, etc). |
static boolean | isProvidingJCE()
Returns true if IJCE is providing the implementations of the JCE classes
(Cipher, KeyGenerator, etc). |
static boolean | isVersionAtLeast(int major, int minor, int intermediate)
Returns true iff this version of IJCE is at least the given
version. |
static void | listProviders()
Debugging method to list all providers. |
static void | main(String[] args)
Prints the IJCE version string, a list of statically configured providers,
and the location of the library directory. |
static void | reportBug(String s)
Prints a "can't happen" error, with a request to report this as a bug.
|
Some trivial methods (such as those that get the block size) are not traced.
This can produce a lot of Output, and it should only be used for debugging, when the data being processed by the algorithm object is not secret.
Tracing only works for classes whose implementations are being provided by IJCE. If there is a non-IJCE implementation of the base class for obj (Cipher, MessageDigest, etc.) earlier in the CLASSPATH, it will probably not support tracing, and false will be returned.
Note that the IJCE library includes an implementation of java.io.PrintWriter that will be used automatically when running on Java 1.0.2.
getDebugOutput()
.PrivilegeManager.enablePrivilege(...)
, in order to request
permission for an action that requires the user's trust.
Currently the following target names are recognized:
Parameters: name the name of the target to be returned
Returns: the Target object
Throws: ForbiddenTargetException if name is not recognized.
Parameters: name the name of the target to be returned arg a parameter object
Returns: the Target object
Throws: ForbiddenTargetException if name is not recognized.
Possible values for type include "Cipher", "Mode", "PaddingScheme", "MessageDigest", "Signature", "KeyGenerator", and "KeyPairGenerator". Other types can be configured in the IJCE.properties file.
Possible values for type include "Cipher", "Mode", "PaddingScheme", "MessageDigest", "Signature", "KeyGenerator", and "KeyPairGenerator". Other types can be configured in the IJCE.properties file.
The built-in padding scheme "NONE", or the built-in mode "ECB" are included if applicable.
Debug.Level.label
".
If this property is not set, "Debug.Level.*
" is
searched next. If neither property is set, or if the first property
found is not a valid decimal integer, then this method returns 0.
Possible values for type include "Cipher", "Mode", "PaddingScheme", "MessageDigest", "Signature", "KeyGenerator", and "KeyPairGenerator". Other types can be configured in the IJCE.properties file.
Parameters: algorithm the standard name or an alias for the algorithm. type the type of algorithm.
Returns: the implementation object.
Throws: NoSuchAlgorithmException if the algorithm is not available in the environment.
Possible values for type include "Cipher", "Mode", "PaddingScheme", "MessageDigest", "Signature", "KeyGenerator", and "KeyPairGenerator". Other types can be configured in the IJCE.properties file.
Parameters: algorithm the standard name or an alias for the algorithm. provider the string name of the provider. type the type of algorithm.
Returns: the implementation object.
Throws: NoSuchAlgorithmException if the algorithm is not available from the provider. NoSuchProviderException if the provider is not available in the environment.
Possible values for type include "Cipher", "Mode", "PaddingScheme", "MessageDigest", "Signature", "KeyGenerator", and "KeyPairGenerator". Other types can be configured in the IJCE.properties file.
Parameters: algorithm the possible alias type the type of algorithm
Returns: the standard name