Using SASL Authentication in Java

Encoder Denso QR Bar Code in Java Using SASL Authentication
Using SASL Authentication
QR Code Creation In Java
Using Barcode generation for Java Control to generate, create QR Code 2d barcode image in Java applications.
RFC 2222 ( Simple Authentication and Security Layer ) proposes a method for adding authentication support to connection-based protocols The protocol (LDAP in this case) supports a command to identify and authenticate a user to the server
Bar Code Creator In Java
Using Barcode printer for Java Control to generate, create barcode image in Java applications.
Using SASL Authentication 183
Barcode Decoder In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
The command requires that you specify the name of the mechanism to use for authentication Netscape Directory Server supports the use of SASL mechanisms through server plug-ins You can write a server plug-in that handles authentication through a SASL mechanism SASL mechanisms are registered with the IANA (Internet Assigned Numbers Authority) and have names such as CRAM-MD5, GSSAPI, and KERBEROS_V4 The same mechanism can be used with many protocols LDAP, IMAP (Internet Message Access Protocol), ACAP (Application Con guration Access Protocol), and so on If the directory server supports the SASL mechanism, it can issue a challenge to the LDAP client The client sends a response to the challenge The server and client can continue to issue a series of server challenges and client responses During this process, the directory server sends the LDAP result code SASL_BIND_IN_PROGRESS to the client When authentication is completed, the server sends a different LDAP result code to the client: SUCCESS if authentication succeeded, and an error code such as INVALID_CREDENTIALS if it failed If authentication completes successfully, the client and server may agree on a security layer to protect the privacy of the session from that point on For more information on SASL, you can nd RFC 2222 at this location: http:// wwwietforg/rfc/rfc2222txt
Create Quick Response Code In Visual C#.NET
Using Barcode drawer for .NET Control to generate, create QR Code 2d barcode image in VS .NET applications.
Authenticating with SASL in LDAP
Draw QR Code In .NET Framework
Using Barcode generation for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
In Directory SDK for Java, you can use SASL authentication by choosing one of the LDAPConnectionauthenticate methods with an appropriate signature:
QR Drawer In VS .NET
Using Barcode maker for VS .NET Control to generate, create QR Code image in Visual Studio .NET applications.
public void authenticate( String dn, Hashtable props, CallbackHandler cbh) throws LDAPException public void authenticate( String dn, String mechanism, Hashtable props, CallbackHandler cbh) throws LDAPException public void authenticate( String dn, String mechanisms[], Hashtable props, CallbackHandler cbh) throws LDAPException
Print QR Code JIS X 0510 In VB.NET
Using Barcode creation for Visual Studio .NET Control to generate, create QR Code image in .NET applications.
Specify the arguments as follows: mechanism The name of the SASL mechanism for example, GSSAPI mechanisms An array of names of acceptable SASL mechanisms for example, { GSSAPI , KERBEROS_V4 } If no mechanisms are speci ed, the SDK contacts the server to query its supported mechanisms
Data Matrix 2d Barcode Generation In Java
Using Barcode maker for Java Control to generate, create DataMatrix image in Java applications.
184 Securing the Data
Generate UPC-A Supplement 5 In Java
Using Barcode printer for Java Control to generate, create UPCA image in Java applications.
props Any optional properties that apply to the mechanism for example, the minimum acceptable encryption strength expressed as a number of bits, and the name of a package containing an implementation of SaslClientFactory that can produce a handler for the desired mechanism The argument may be null if default properties are acceptable Table 7-1 lists properties that can be speci ed in props cbh If the mechanism requires additional credentials or other information during the authentication process, it will call the CallbackHandler interface that you supply, if you supply a value other than null
Print Barcode In Java
Using Barcode maker for Java Control to generate, create barcode image in Java applications.
Callbacks in SASL
EAN13 Generation In Java
Using Barcode generation for Java Control to generate, create UPC - 13 image in Java applications.
The Callback interface is de ned in the javaxauthsecuritycallback package, which is provided with the SDK in jaasjar A current version of jaasjar can be obtained from http://javasuncom The javadoc documentation for the interface provides the following description of javaxauthsecuritycallbackCallbackHandler An application implements a CallbackHandler and passes it to underlying security services so that they may interact with the application to retrieve speci c authenti-
Generate Code 128C In Java
Using Barcode creation for Java Control to generate, create ANSI/AIM Code 128 image in Java applications.
TABLE 7-1 Properties for SASL authentication
Encode USPS Confirm Service Barcode In Java
Using Barcode creator for Java Control to generate, create USPS PLANET Barcode image in Java applications.
PROPERTY NAME MEANING
EAN-13 Supplement 5 Creator In .NET Framework
Using Barcode creator for .NET Control to generate, create EAN 13 image in Visual Studio .NET applications.
javaxsecuritysaslencryptionminimum
Decoding Code 3 Of 9 In .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in VS .NET applications.
Minimum key length; default 0 (no session protection); 1 means integrity protection only Maximum key length; default 256 If server must authenticate to client, then true ; default false IP address in dotted decimal format, for Kerberos version 4; no default IP address in dotted decimal format, for Kerberos version 4; no default Maximum size of security layer frames; default 0 (client will not use the security layer) A space-separated list of package names to use when locating a SaslClientFactory interface
Encoding GS1 - 12 In .NET
Using Barcode generator for VS .NET Control to generate, create UPC-A image in .NET framework applications.
javaxsecuritysaslencryptionmaximum javaxsecuritysaslserverauthentication
EAN 128 Drawer In .NET
Using Barcode printer for Visual Studio .NET Control to generate, create EAN / UCC - 14 image in .NET applications.
javaxsecuritysasliplocal
Making Code-39 In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create Code 3/9 image in ASP.NET applications.
javaxsecuritysaslipremote
Code39 Generation In C#
Using Barcode generator for VS .NET Control to generate, create Code39 image in VS .NET applications.
javaxsecuritysaslmaxbuffer
Draw Barcode In .NET
Using Barcode drawer for ASP.NET Control to generate, create bar code image in ASP.NET applications.
javaxsecuritysaslclientpkgs
Using SASL Authentication 185
cation data, such as user names and passwords, or to display certain information, such as error and warning messages CallbackHandler interfaces are implemented in an application-dependent fashion For example, implementations for an application with a graphical user interface (GUI) may pop up windows to prompt for requested information or to display error messages An implementation may also choose to obtain requested information from an alternate source without asking the end user Underlying security services make requests for different types of information by passing individual Callback objects to the CallbackHandler The CallbackHandler implementation decides how to retrieve and display information depending on the Callback objects passed to it For example, if the underlying service needs a user name and password to authenticate a user, it uses a NameCallback and PasswordCallback The CallbackHandler can then choose to prompt for a user name and password serially, or to prompt for both in a single window A class that implemented CallbackHandler with support for several different Callback types in a command-line application environment could look like this:
class SampleCallbackHandler implements CallbackHandler { SampleCallbackHandler( String userName ) { _userName = userName; } /** * Invoke the requested Callback */ public void invokeCallback(Callback[] callbacks) throws javaioIOException, UnsupportedCallbackException { for (int i = 0; i < callbackslength; i++) { if (callbacks[i] instanceof TextOutputCallback) { // display the message according to the specified STYLE TextOutputCallback toc = (TextOutputCallback)callbacks[i]; switch (tocgetStyle()) { case TextOutputCallbackERROR: Systemoutprintln("ERROR: " + tocgetMessage()); break; case TextOutputCallbackINFORMATION: Systemoutprintln(tocgetMessage()); break; case TextOutputCallbackWARNING: Systemoutprintln("WARNING: " + tocgetMessage()); break; }