it.trento.comune.j4sign.examples

Class SimpleSignApplet

java.lang.Object

java.awt.Component

java.awt.Container

java.awt.Panel

java.applet.Applet

javax.swing.JApplet

it.trento.comune.j4sign.examples.SimpleSignApplet

All Implemented Interfaces:

java.awt.event.ActionListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.util.EventListener, javax.accessibility.Accessible, javax.swing.RootPaneContainer

Deprecated.

This is old code not more maintained; see PKCS11SignApplet for replacement.

This is the client side part of the j4sign usage example in a web environment.
SimpleSignApplet is simple in the sense that refined GUI features are avoided (like multiple threads used to correctly implement the progress bar), in favor to a clear exposition of specific signature procedures.

The goal was to illustrate an approach in which the client side encryption, involving cryptographic token management via JNI, is completely separated from server side CMS message building. This lightens the applet, which has not to bear the weight of the BouncyCastle classes.

Note that in actual implementation of SimpleSignApplet digesting is done on the server, and encapsulated in a digestInfo. Only digestInfo is sent to the applet.

Another feature is the encapsulation of the JNI part (the excellent pkcs11 wrapper developed by IAIK of Graz University of Technology, and the pcsc wrapper taken from Open Card Framework project), along with the corresponding native libraries, in a standard Java Extension, named SmartCardAccess. See it.trento.comune.j4sign.installer and Deploying Java Extensions.
The extension is deployed automatically the first time the applet is loaded.
The ultimate dependency for the applet is the cryptoki library, which has to be provided from the PKCS11 token manufacturer. The PCSCHelper class uses the pcsc wrapper trying to infer the correct library from the ATR string returned from the token.

Some words about security; all downloaded jars, including the SmartCardAccess extension, has to be signed in order to work; this is needed for tho reasons:

• the applet loads native libraries
• the applet deploys a java extension.

This gives more confidence about signing software integrity.

The entire example, with the CMSServlet server side counterpart, is designed to permit the use of the standard JDK tools. The applet can be executed with applet viewer tool (no HttpSession in the servlet, nor HTML forms on the client side are used).
This eases the use of an IDE for test and debugging; we use, and recommend, the Eclipse) IDE.

N.B.: IN A REAL WORLD WEB APPLICATION SCENARIO, YOU CAN (AND SHOULD) TAKE ADVANTAGE OF THE FULL SERVLET API, AND HTTP/HTML FEATURES.

Here are the SimpleSignApplet operations in detail; the applet talks with the server (servlet) in HTTP:

1. The applet initialization method (init()) builds the GUI layout: a text area in the center, and, in the bottom, a button to load data from server and a password field.
   A detailed log is shown on System out (Java Plugin console).
2. When the "Load data" button is pressed, the non repudiation certificate is searched on the PKCS11 token. If such certificate is found a GET request is generated, specifiying a retrieve parameter with value DATA; the server returns the message to sign.
   Immediately after, another GET request is sent, specifiying a retrieve parameter with value ENCODED_AUTHENTICATED_ATTRIBUTES, and a retrieve parameter with the certificate as value; the server calculates (using also the certificate) the Authenticated Attributes data, SHA-256 digests and encapsulates them in a digestInfo.
   The digestInfo is returned to the applet.
   The message and a textual representation of the authenticated attributes are presented in the text area.
   Note that authenticated attributes includes a timestamp, then even if the message is the same, the digestInfo to encrypt change every time the user loads the data from server.
3. When the user insert the password in the field and press return, the signing process starts:
   
   1. the PCSC layer is invoked to query for an inserted token, and if one is found the relative PKCS#11 cryptoki is (hopefully) detected and loaded.
   2. Then the token is checked for the required signature algorithm (RSA_PKCS), and queried for a suitable (non repudiation) certificate - private key pair.
   3. Then the digestInfo is sent to the token for the encryption procedure.
4. The signature is sent to the server via HTTP POST, along with the signer certificate extracted from the token (The same that was already sent before).
5. The server acknowledges confirming signature verification and CMS building and saving.

N.B. note that in this example signature verification only ensures integrity; a complete verification to ensure non-repudiation requires checking the full certification path including the CA root certificate, and CRL verification on the CA side. (Good stuff for a next release ...)

public class SimpleSignApplet
extends javax.swing.JApplet
implements java.awt.event.ActionListener

Author:

Roberto Resoli

See Also:

CMSServlet, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JApplet

javax.swing.JApplet.AccessibleJApplet

Nested classes/interfaces inherited from class java.applet.Applet

java.applet.Applet.AccessibleApplet

Nested classes/interfaces inherited from class java.awt.Panel

java.awt.Panel.AccessibleAWTPanel

Nested classes/interfaces inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	attrPrintout Deprecated.
private java.lang.String	baseHttpUrl Deprecated.
private byte[]	certificate Deprecated.
private java.lang.String	cryptokiLib Deprecated.
static int	DATA_LOADED Deprecated.
private javax.swing.JTextArea	dataArea Deprecated.
static java.lang.String	DEFAULT_BASE_HTTP_URL Deprecated.
private byte[]	digestInfo Deprecated.
private byte[]	encryptedDigest Deprecated.
static int	ERROR Deprecated.
private javax.swing.JButton	loadButton Deprecated.
private java.io.PrintStream	log Deprecated.
private short	OBJECT_SEARCH_CRITERION Deprecated.
static int	POST_ERROR Deprecated.
static int	POST_OK_VERIFY_ERROR Deprecated.
static int	POST_OK_VERIFY_OK Deprecated.
private javax.swing.JProgressBar	progressBar Deprecated.
private javax.swing.JPasswordField	pwd Deprecated.
static int	RESET Deprecated.
private static short	SEARCH_BY_CERTIFICATE_KEY_USAGE Deprecated.
private static short	SEARCH_BY_PRIVATE_KEY Deprecated.
static int	SIGN_DONE Deprecated.
private java.lang.String	signerLabel Deprecated.
private java.lang.String	textToSign Deprecated.

Fields inherited from class javax.swing.JApplet

accessibleContext, rootPane, rootPaneCheckingEnabled

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors

Constructor and Description
SimpleSignApplet() Deprecated.

Method Summary

Methods

Modifier and Type	Method and Description
void	actionPerformed(java.awt.event.ActionEvent e) Deprecated. The implementation of the callback method for ActionListener.
void	destroy() Deprecated. Cleans up whatever resources are being held.
private boolean	detectCardAndCriptoki() Deprecated. This triggers the PCSC wrapper stuff; a PCSCHelper class is used to detect reader and token presence, trying also to provide a candidate PKCS#11 cryptoki for it; detection is bypassed if an applet parameter forcing cryptoki selection is provided.
private void	displayDataToSign() Deprecated. Shows on the text area of the applet the message content and the current authenticated attributes dump (that includes the timestamp that will be signed).
private void	findCertificate() Deprecated.
(package private) java.lang.String	formatAsHexString(byte[] bytes) Deprecated.
java.lang.String	getBaseHttpUrl() Deprecated.
byte[]	getCertificate() Deprecated. Gets the signer certificate.
private java.lang.String	getCryptokiLib() Deprecated. Gets the native cryptoki library name; this is the library provided by the token manufacturer that implements the PKCS#11 standard API.
byte[]	getDigestInfo() Deprecated. Returns the digest of the bytes to sign.
byte[]	getEncryptedDigest() Deprecated. The result of encryption of data obtained from #getDigest(); Encryption is done on the token.
private java.lang.String	getSignerLabel() Deprecated. The textual identifier of the objects related to the signer on a PKCS#11 token; do not rely only on this to find objects; labels are manufacturer dependent.
private java.lang.String	httpGet(java.net.URL url) Deprecated. Generic implementation of a HTTP GET; used from the data retrieval methods.
private java.lang.String	httpPOST(java.net.URL url, java.lang.String data) Deprecated. Generic implementation of a HTTP POST; used from the data sending and retrieval methods.
void	init() Deprecated. Initializes the applet; the applet accepts as optional parameters the label of the signer on the token, and the url of the running servlet to use for CMS operations.
private void	initStatus(int min, int max) Deprecated. Initializes the status bar, extabilishing the value range.
private boolean	loadData() Deprecated. Triggers three different HTTP GET requests against the server: The first for retrieving the textual content to sign (the message) The second for retrieving the time-dependent bytes to sign (the authenticated attributes) The third for retrieving a textual rapresentetion of the bytes to sign (the authenticated attributes printout) The local digest value is updated according with the new bytes to sign.
private java.lang.String	retrieveAuthenticatedAttributesPrintout() Deprecated. Implements the HTTP GET request that returns the textual representation of the current "authenticated attributes".
private byte[]	retrieveDigestInfo() Deprecated. Implements the HTTP GET request that returns the data to digest and encrypt..
private java.lang.String	retrieveTextToSign() Deprecated. Implements the HTTP GET request that returns the message to sign.
private int	sendSignatureAndCertificate() Deprecated. Implements of the HTTP POST that sends the encrypted digest and the signer certificate to the server.
void	setBaseHttpUrl(java.lang.String baseHttpUrl) Deprecated.
private void	setCertificate(byte[] newCertificate) Deprecated. Inserire qui la descrizione del metodo.
private void	setCryptokiLib(java.lang.String newCryptokiLib) Deprecated. Sets the native PKCS#11 implementation to use.
void	setDigestInfo(byte[] newDigestInfo) Deprecated. Sets the digest.
void	setEncryptedDigest(byte[] newEncryptedDigest) Deprecated. Sets the encrypted digest.
private void	setSignerLabel(java.lang.String newSignerLabel) Deprecated. The label to use to retrieve signer - related objects on the token.
private void	setStatus(int code, java.lang.String statusString) Deprecated. Manages status messages displayed on the status bar.
void	sign() Deprecated. Triggers the digest encryption on the token, using services provided by PKCS11Signer class.
void	start() Deprecated. Called to start the applet.
void	stop() Deprecated. Called to stop the applet.

Methods inherited from class javax.swing.JApplet

addImpl, createRootPane, getAccessibleContext, getContentPane, getGlassPane, getGraphics, getJMenuBar, getLayeredPane, getRootPane, getTransferHandler, isRootPaneCheckingEnabled, paramString, remove, repaint, setContentPane, setGlassPane, setJMenuBar, setLayeredPane, setLayout, setRootPane, setRootPaneCheckingEnabled, setTransferHandler, update

Methods inherited from class java.applet.Applet

getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, isActive, isValidateRoot, newAudioClip, play, play, resize, resize, setStub, showStatus

Methods inherited from class java.awt.Panel

addNotify

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getListeners, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, removeAll, removeContainerListener, removeNotify, setComponentZOrder, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, revalidate, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

dataArea

private javax.swing.JTextArea dataArea

Deprecated.

loadButton

private javax.swing.JButton loadButton

Deprecated.

pwd

private javax.swing.JPasswordField pwd

Deprecated.

log

private java.io.PrintStream log

Deprecated.

progressBar

private javax.swing.JProgressBar progressBar

Deprecated.

textToSign

private java.lang.String textToSign

Deprecated.

attrPrintout

private java.lang.String attrPrintout

Deprecated.

digestInfo

private byte[] digestInfo

Deprecated.

encryptedDigest

private byte[] encryptedDigest

Deprecated.

cryptokiLib

private java.lang.String cryptokiLib

Deprecated.

signerLabel

private java.lang.String signerLabel

Deprecated.

baseHttpUrl

private java.lang.String baseHttpUrl

Deprecated.

certificate

private byte[] certificate

Deprecated.

SEARCH_BY_PRIVATE_KEY

private static final short SEARCH_BY_PRIVATE_KEY

Deprecated.

See Also:

Constant Field Values

SEARCH_BY_CERTIFICATE_KEY_USAGE

private static final short SEARCH_BY_CERTIFICATE_KEY_USAGE

Deprecated.

See Also:

Constant Field Values

OBJECT_SEARCH_CRITERION

private short OBJECT_SEARCH_CRITERION

Deprecated.

ERROR

public static final int ERROR

Deprecated.

See Also:

Constant Field Values

RESET

public static final int RESET

Deprecated.

See Also:

Constant Field Values

DATA_LOADED

public static final int DATA_LOADED

Deprecated.

See Also:

Constant Field Values

SIGN_DONE

public static final int SIGN_DONE

Deprecated.

See Also:

Constant Field Values

POST_ERROR

public static final int POST_ERROR

Deprecated.

See Also:

Constant Field Values

POST_OK_VERIFY_OK

public static final int POST_OK_VERIFY_OK

Deprecated.

See Also:

Constant Field Values

POST_OK_VERIFY_ERROR

public static final int POST_OK_VERIFY_ERROR

Deprecated.

See Also:

Constant Field Values

DEFAULT_BASE_HTTP_URL

public static final java.lang.String DEFAULT_BASE_HTTP_URL

Deprecated.

See Also:

Constant Field Values

Constructor Detail

SimpleSignApplet

public SimpleSignApplet()

Deprecated.

Method Detail

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Deprecated.

The implementation of the callback method for ActionListener. Entry point for all applet operations: data loading, signature, data sending.

Specified by:

actionPerformed in interface java.awt.event.ActionListener

See Also:

ActionListener.actionPerformed(java.awt.event.ActionEvent)

destroy

public void destroy()

Deprecated.

Cleans up whatever resources are being held. If the applet is active it is stopped. Forces a system garbage collection to reclaim memory.

Overrides:

destroy in class java.applet.Applet

See Also:

init(), start(), stop()

getCertificate

public byte[] getCertificate()

Deprecated.

Gets the signer certificate.

Returns:

byte the certificate bytes as extracted from the pkcs11 token.

getCryptokiLib

private java.lang.String getCryptokiLib()

Deprecated.

Gets the native cryptoki library name; this is the library provided by the token manufacturer that implements the PKCS#11 standard API.

Returns:

java.lang.String

getDigestInfo

public byte[] getDigestInfo()

Deprecated.

Returns the digest of the bytes to sign.

Returns:

byte[] data to be sento to the token for encryption.

getEncryptedDigest

public byte[] getEncryptedDigest()

Deprecated.

The result of encryption of data obtained from #getDigest(); Encryption is done on the token.

Returns:

iaik.pkcs.pkcs7.SignedData

getSignerLabel

private java.lang.String getSignerLabel()

Deprecated.

The textual identifier of the objects related to the signer on a PKCS#11 token; do not rely only on this to find objects; labels are manufacturer dependent.

Returns:

java.lang.String

loadData

private boolean loadData()

Deprecated.

Triggers three different HTTP GET requests against the server:

1. The first for retrieving the textual content to sign (the message)
2. The second for retrieving the time-dependent bytes to sign (the authenticated attributes)
3. The third for retrieving a textual rapresentetion of the bytes to sign (the authenticated attributes printout)

The local digest value is updated according with the new bytes to sign.

Returns:

true if all data retrieval operations were successful.

retrieveTextToSign

private java.lang.String retrieveTextToSign()

Deprecated.

Implements the HTTP GET request that returns the message to sign.

Returns:

the message content to sign.

retrieveDigestInfo

private byte[] retrieveDigestInfo()

Deprecated.

Implements the HTTP GET request that returns the data to digest and encrypt..

Returns:

the "authenticated attributes" bytes.

retrieveAuthenticatedAttributesPrintout

private java.lang.String retrieveAuthenticatedAttributesPrintout()

Deprecated.

Implements the HTTP GET request that returns the textual representation of the current "authenticated attributes". This is requested to the server because the applet is not equipped with the BouncyCastle classes required to decode the "authenticated attributes". The current digest is used as on the server a key to retrive the printout.

Returns:

the authenticated attributes textual dump.

httpGet

private java.lang.String httpGet(java.net.URL url)
                          throws java.io.IOException

Deprecated.

Generic implementation of a HTTP GET; used from the data retrieval methods.

Parameters:

url - the url to GET.

Returns:

the result of the GET method.

Throws:

java.io.IOException

See Also:

retrieveTextToSign(), #retrieveBytesToSign(), retrieveAuthenticatedAttributesPrintout()

httpPOST

private java.lang.String httpPOST(java.net.URL url,
                        java.lang.String data)
                           throws java.io.IOException

Deprecated.

Generic implementation of a HTTP POST; used from the data sending and retrieval methods.

Parameters:

url - the url to POST to.

data - the data to POST.

Returns:

the result of the POST method.

Throws:

java.io.IOException

sendSignatureAndCertificate

private int sendSignatureAndCertificate()

Deprecated.

Implements of the HTTP POST that sends the encrypted digest and the signer certificate to the server.

Returns:

an int result code of POST_ERROR if the POST was not completed, POST_OK_VERIFY_ERROR if the POST was ok but there was a signature verification error, POST_OK_VERIFY_OK if all was ok and the CMS message file was written on the server filesystem.

init

public void init()

Deprecated.

Initializes the applet; the applet accepts as optional parameters the label of the signer on the token, and the url of the running servlet to use for CMS operations. Another parameter can force the cryptoki library to use.

Overrides:

init in class java.applet.Applet

See Also:

start(), stop(), destroy()

displayDataToSign

private void displayDataToSign()

Deprecated.

Shows on the text area of the applet the message content and the current authenticated attributes dump (that includes the timestamp that will be signed).

initStatus

private void initStatus(int min,
              int max)

Deprecated.

Initializes the status bar, extabilishing the value range.

Parameters:

min - minimum value for the status bar.

max - maximum value for the status bar.

setStatus

private void setStatus(int code,
             java.lang.String statusString)

Deprecated.

Manages status messages displayed on the status bar. And error messages shown on a MessageBox.

Parameters:

code -

statusString -

detectCardAndCriptoki

private boolean detectCardAndCriptoki()
                               throws java.io.IOException

Deprecated.

This triggers the PCSC wrapper stuff; a PCSCHelper class is used to detect reader and token presence, trying also to provide a candidate PKCS#11 cryptoki for it; detection is bypassed if an applet parameter forcing cryptoki selection is provided.

Returns:

true if a token with corresponding candidate cryptoki was detected.

Throws:

java.io.IOException

setCertificate

private void setCertificate(byte[] newCertificate)

Deprecated.

Inserire qui la descrizione del metodo. Data di creazione: (10.05.01 14.28.07)

Parameters:

newCertificate - byte

setCryptokiLib

private void setCryptokiLib(java.lang.String newCryptokiLib)

Deprecated.

Sets the native PKCS#11 implementation to use.

Parameters:

newCryptokiLib - java.lang.String name of the native library

setDigestInfo

public void setDigestInfo(byte[] newDigestInfo)

Deprecated.

Sets the digest.

Parameters:

newDigest - byte[] containing the digest value to set.

setEncryptedDigest

public void setEncryptedDigest(byte[] newEncryptedDigest)

Deprecated.

Sets the encrypted digest.

Parameters:

newEncryptedDigest - byte[] containing the encrypted digest value to set..

setSignerLabel

private void setSignerLabel(java.lang.String newSignerLabel)

Deprecated.

The label to use to retrieve signer - related objects on the token.

Parameters:

newSignerLabel - java.lang.String the signer identifier on the token.

sign

public void sign()
          throws java.security.cert.CertificateException

Deprecated.

Triggers the digest encryption on the token, using services provided by PKCS11Signer class. Different criteria can be used to find relevant objects on the key: the default implementation here tries to act in order to build an italian legal-value document. A Certificate carrying an KeyUsage extension of non-repudiation marked critical is searched; if found the corresponding private key is used to sign. A real-world application should consent the user the certificate for signing.

Throws:

java.security.cert.CertificateException

findCertificate

private void findCertificate()
                      throws java.security.cert.CertificateException

Deprecated.

Throws:

java.security.cert.CertificateException

start

public void start()

Deprecated.

Called to start the applet. You never need to call this method directly, it is called when the applet's document is visited.

Overrides:

start in class java.applet.Applet

See Also:

init(), stop(), destroy()

stop

public void stop()

Deprecated.

Called to stop the applet. It is called when the applet's document is no longer on the screen. It is guaranteed to be called before destroy() is called. You never need to call this method directly.

Overrides:

stop in class java.applet.Applet

See Also:

init(), start(), destroy()

formatAsHexString

java.lang.String formatAsHexString(byte[] bytes)

Deprecated.

getBaseHttpUrl

public java.lang.String getBaseHttpUrl()

Deprecated.

setBaseHttpUrl

public void setBaseHttpUrl(java.lang.String baseHttpUrl)

Deprecated.