demo
Class DemoUtil

java.lang.Object
  demo.DemoUtil

Direct Known Subclasses:

DemoSMimeUtil

public class DemoUtil
extends java.lang.Object

Some basic utility methods used by the demos.

Field Summary

static boolean	CREATE_DEMO_KEYSTORE_AUTOMATICAllY Whether to create a new demo keystore automatically if it is not present or to explicitly ask if to create it.
static boolean	DEMO_DEBUG Debug flag for all demos
static iaik.asn1.ObjectID	IAIK_JAVA_SECURITY_DEMO_CMS_OID Base OID for IAIK-CMS demos.

Method Summary

static void	addIaikProvider() Adds the IAIK JCE as a first security provider.
static void	addProvider(java.lang.String name) Adds the cryptography provider with the given name.
static iaik.asn1.structures.AlgorithmID	createPssAlgorithmID(iaik.asn1.structures.AlgorithmID hashID, iaik.asn1.structures.AlgorithmID mgfID, int saltLength) Creates a RSA-PSS AlgorithmID with the supplied parameters (hash algorithm id, mask generation function, salt length).
static double	getIaikProviderVersion() Gets the version number of the IAIK-JCE provider used for this demos.
static void	initDemos() Perform a some initial setup to allow the demos to work
static void	initDemos(boolean quickStart) Perform a some initial setup to allow the demos to work
static void	initRandom() Setup the random number generator for a quick start.
static void	initRandom(boolean quick) Setup the random number generator for a quick start.
static void	waitKey() Wait for the user to press the return key on System.in.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEMO_DEBUG

public static final boolean DEMO_DEBUG

Debug flag for all demos

See Also:

Constant Field Values

IAIK_JAVA_SECURITY_DEMO_CMS_OID

public static final iaik.asn1.ObjectID IAIK_JAVA_SECURITY_DEMO_CMS_OID

Base OID for IAIK-CMS demos.

CREATE_DEMO_KEYSTORE_AUTOMATICAllY

public static boolean CREATE_DEMO_KEYSTORE_AUTOMATICAllY

Whether to create a new demo keystore automatically if it is not present or to explicitly ask if to create it.

Method Detail

initDemos

public static void initDemos()

Perform a some initial setup to allow the demos to work

initDemos

public static void initDemos(boolean quickStart)

Perform a some initial setup to allow the demos to work

Parameters:

quickStart - whether to init the random generator with a (not strong) seed for quick start (ONLY FOR DEMO PURPOSES; NOT FOR PRODUCTION ENVIRONMENT!)

addIaikProvider

public static void addIaikProvider()

Adds the IAIK JCE as a first security provider.

getIaikProviderVersion

public static double getIaikProviderVersion()

Gets the version number of the IAIK-JCE provider used for this demos.

Returns:

the version number of the IAIK JCA/JCE provider

addProvider

public static void addProvider(java.lang.String name)

Adds the cryptography provider with the given name. Note that it may not be enough to just add it as a provider; see the SecurityProvider class for more information.

Parameters:

name - the name of the provider to be added

initRandom

public static void initRandom()

Setup the random number generator for a quick start. THIS IS NOT SECURE AND SHOULD BE USED FOR DEMO PURPOSES ONLY. ANY CRYPTOGRAPHIC KEY DERIVED IN THIS WAY IS WEAK AND NO STRONGER THAN 20 BIT!!!

initRandom

public static void initRandom(boolean quick)

Setup the random number generator for a quick start. THIS IS NOT SECURE AND SHOULD BE USED FOR DEMO PURPOSES ONLY. ANY CRYPTOGRAPHIC KEY DERIVED IN THIS WAY IS WEAK AND NO STRONGER THAN 20 BIT!!!

Parameters:

quick - whether to init the random generator with a (not strong) seed for quick start (only for demonstration purposes)

createPssAlgorithmID

public static iaik.asn1.structures.AlgorithmID createPssAlgorithmID(iaik.asn1.structures.AlgorithmID hashID,
                                                                    iaik.asn1.structures.AlgorithmID mgfID,
                                                                    int saltLength)
                                                             throws java.security.InvalidAlgorithmParameterException,
                                                                    java.security.NoSuchAlgorithmException

Creates a RSA-PSS AlgorithmID with the supplied parameters (hash algorithm id, mask generation function, salt length).

Parameters:

hashID - the hash algorithm to be used

mgfID - the mask generation function to be used

saltLength - the salt length to be used

Returns:

the RSA-PSS algorithm id with the given parameters

Throws:

java.security.InvalidAlgorithmParameterException - if the parameters cannot be created/set

java.security.NoSuchAlgorithmException - if there is no AlgorithmParameters implementation for RSA-PSS

waitKey

public static void waitKey()

Wait for the user to press the return key on System.in.