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310-110 Sun Certified Mobile Application Developer for the Java 2 Platform, Micro Edition, Version 1.0

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310-110 exam Dumps Source : Sun Certified Mobile Application Developer for the Java 2 Platform, Micro Edition, Version 1.0

Test Code : 310-110
Test denomination : Sun Certified Mobile Application Developer for the Java 2 Platform, Micro Edition, Version 1.0
Vendor denomination : SUN
: 340 real Questions

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SUN SUN Sun Certified Mobile

sun Belt convention champion will play in recent Orleans Bowl | killexams.com real Questions and Pass4sure dumps

The sun Belt convention champion will play within the R+L Carriers recent Orleans Bowl, the league workplace introduced Friday.

In years past, the brand recent Orleans Bowl had first pick from among bowl-eligible sun Belt groups, however was no longer required to win the champion. With the establishment this yr of a conference championship game, the bowl will now automatically win the winner.

“The R+L Carriers recent Orleans Bowl and solar Belt football own been linked together from the inception of both in 2001 and they are excited to retain on their longstanding relationship with the game in this recent and pleasing method,” talked about sun Belt convention Commissioner Karl Benson. “Our pupil-athletes, coaches, administrators and fanatics own outright the time loved their visits to recent Orleans and own at outright times had a first-class bowl experience.

“The sun Belt champion could breathe greeted with the metropolis’s widespread hospitality and may play in the iconic Mercedes-Benz Superdome. it is an exciting time for each the solar Belt and the R+L Carriers recent Orleans Bowl.”

The sun Belt championship online game takes vicinity Dec. 1 on the domestic web site of the highest ranked division champion, with ESPN featuring live coverage at 11 a.m.. With two weeks left within the ordinary season, Troy (8-2, 6-0) and Louisiana-Monroe (6-four, four-2) are in first locality in the East and West Divisions.

The solar Belt champion will kisser a team from convention united states within the recent Orleans Bowl, which takes position Dec. 15 on the Mercedes Benz Superdome. The online game kicks off at 8 p.m. and may breathe televised via ESPN.’

The sun Belt has 4 different postseason tie-ins, the dollar universal (mobile), Camellia (Sir Bernard Law), remedy (Orlando) and Arizona (Tucson) Bowls. Troy, Appalachian State, Georgia Southern, Louisiana-Monroe and Arkansas State own already earned bowl-eligibility, with Louisiana-Lafayette and Coastal Carolina desiring one other victory each.


Cisco to tender Wi-sun certified IoT items for snug Utility and smart city Deployments | killexams.com real Questions and Pass4sure dumps

At Cisco, we’ve been supplying networking infrastructure to utilities and smart Cities around the world.  Their valued clientele own informed us that they requisite snug interoperability across their gadgets and sensors linked over at ease multi-intention networks.

As a Sponsor member of the Wi-sun Alliance – a global ecosystem of corporations seeking to speed up the implementation of open requirements-primarily based sphere enviornment Networks (FAN) and web of things (IoT) conclusion gadget interoperability – Cisco has been actively working with member groups to define, verify, and bring a typical open-requisites primarily based profile for this interoperability.

within the identical approach that diverse smartphones, capsules, computer systems and other gadgets can unite by the utilize of Wi-Fi, the Wi-sun FAN specifications support manufacture sure that diverse utility, wise metropolis and industrial instruments can securely hook up with business-grade smart utility and sensible city networks.

nowadays we're completely contented to declar Cisco’s aid for the recent Wi-solar container enviornment community (FAN) Certification program. Cisco has already begun the manner to certify the CGR1240, IR509, IR510, IR529, and the IR530 industrial routers under these recent Wi-sun requirements – and they are expecting to tender their first Wi-sun licensed IoT items by means of the conclusion of this yr.

Wi-solar = instant smart Ubiquitous Networks.take a observe at this video for a brief overview.

in keeping with open industry requirements posted via the IEEE and IETF, the Wi-sun FAN Certification defines a relaxed, resilient, multi-carrier IEEE 802.15.4 mesh community that can aid IPv6 Industrial IoT sphere purposes at a million-node scale. The Wi-sun FAN Certification will supply consumers self assurance that certified items in the program are interoperable with one one other and sourced from diverse companies.

This recent certification software is the culmination of a long time of great work by Cisco – in collaboration with different like-minded vendors – to implement and validate a at ease, multi-supplier, multi-service FAN infrastructure, giving consumers a attainable election to closed and proprietary service offerings.

extra particulars in regards to the Wi-solar Alliance can also breathe organize here.

Share:


Renesas is a component of 1st wave of testing for Wi-solar FAN 1.0 certification | killexams.com real Questions and Pass4sure dumps

07 November 2018

Wi-sun Alliance has adopted Renesas Electronics' sub-gigahertz (Sub-G) instant concede as a candidate of the interoperability check bed devices (TBUs) for the Wi-sun FAN (container enviornment community) Certification program.

Renesas is portion of the primary wave of groups taking portion in the Wi-sun FAN 1.0 certification process with its RAA604S00/RX651 wireless answer. Certifications are deliberate by way of the conclusion of 2018.

The Sub-G instant solution elements Tessera technology’s contrast platform, which contains an assessment board established with Renesas’ RAA604S00 instant communications equipment-on-chip (SoC) and RX651 microcontroller (MCU), in addition to communique manage software provided by Renesas.

“The Wi-solar neighborhood has been making colossal strides within the development and deployment of instant communications in the energy management systems business, and they are pleased to extend their dedication to the sensible energy markets and enhance the latest Wi-solar requisites with their Wi-solar FAN-certified solution and test mattress units,” talked about Akihiro Kuroda, vice president, power Infrastructure traffic Division, Renesas Electronics organization.

clients who extend sensible meters, wise illumination, infrastructure device, and equivalent products using the Renesas Sub-G instant concede could breathe capable of comfortably assure interoperability between device that makes utilize of the Wi-sun FAN specification. due to this fact, they should breathe capable of reduce back their pile length for Wi-solar FAN-compliant software paraphernalia by using about three hundred and sixty five days compared with election options.

The Sub-G company presents points which are resilient to actual limitations and can transmit facts even extra than supported through prior requirements, even in urban environments. considering the fact that vast areas can breathe coated with decent steadiness via mesh networks, it is applicable for purposes such smart meter communique, power utilization visualisation, monitoring device utilisation, and managing a variety of sensors inside a utility, factories and buildings.

creator Bethan Grylls


310-110 Sun Certified Mobile Application Developer for the Java 2 Platform, Micro Edition, Version 1.0

Study sheperd Prepared by Killexams.com SUN Dumps Experts


Killexams.com 310-110 Dumps and real Questions

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310-110 exam Dumps Source : Sun Certified Mobile Application Developer for the Java 2 Platform, Micro Edition, Version 1.0

Test Code : 310-110
Test denomination : Sun Certified Mobile Application Developer for the Java 2 Platform, Micro Edition, Version 1.0
Vendor denomination : SUN
: 340 real Questions

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Sun Certified Mobile Application Developer for the Java 2 Platform, Micro Edition, Version 1.0

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Java 2 Platform Security | killexams.com real questions and Pass4sure dumps

This chapter explains the Java 2 platform architecture and its security features as they apply to pile Java applications. In particular, it describes the various Java platforms and the core security features that contribute to the end-to-end security of Java-based applications running on various systems—from servers to stand-alone computers, computers to devices, and devices to smart cards.

This chapter is from the bespeak 

Topics in This Chapter

  • Java Security Architecture
  • Java Applet Security
  • Java Web Start Security
  • Java Security Management Tools
  • J2ME Security Architecture
  • Java Card Security Architecture
  • Securing the Java Code
  • Sun's Java philosophy of "Write Once, flee Anywhere" has been an evolving success sage since its inception, and it has revolutionized the computing industry by delivering to us the most capable platform for pile and running a wide reach of applications and services. In general, the Java platform provides a general-purpose object-oriented programming language and a standard runtime environment for developing and delivering secure, cross-platform application solutions that can breathe accessed and dynamically loaded over the network or flee locally.

    With the release of the Java 2 Platform, Sun categorized the Java technologies under three key major editions in order to simplify software development and deployment. The Java 2 Standard Edition (J2SE) provides the runtime environment and API technologies for developing and executing basic Java applications, and it also serves as the secure foundation for running Java enterprise applications. The Java 2 Enterprise Edition (J2EE), or the J2EE Platform, is a set of standards and API technologies for developing and deploying multi-tier traffic applications. To support Java on microdevices and embedded systems, Java 2 Micro Edition (J2ME) provides the runtime environment and API technologies for addressing the needs of consumer electronics and devices. With its widespread adoption, today Java technology is enabled and executed from smart cards to microdevices, handhelds to desktops, workstations to enterprise servers, mainframes to supercomputers, and so on.

    To facilitate end-to-end security of the Java platform-based application solutions, the Java runtime environment (JRE) and the Java language provide a solid security foundation from the ground up by imposing strong format and structural constraints on the code and its execution environment. This distinguishes the Java platform from other application programming languages—it has a well-defined security architectural model for programming Java-based solutions and their secure execution.

    In this chapter, they will explore the various Java platforms and the intricate details of their security architecture that contribute to the end-to-end security of Java-based application solutions. In particular, they will study Java security and the inherent features of the following technologies:

  • J2SE security
  • Java applet security
  • Java Web start security
  • Java security management tools
  • J2ME security
  • Java Card security
  • Java Code obfuscation
  • Security has been an integral portion of Java technology from day one. Security is also an evolving design goal of the Java community—building and running secure and robust Java-based network applications. The primary intuition for Java's success today as a secure execution environment is the intrinsic security of its architectural foundation—the Java Virtual Machine (JVM) and the Java language. This foundation achieves the basic Java security goal and its definitive ways for extending security capabilities to ensure features such as confidentiality, integrity, trust, and so forth. A second intuition for its success is its skill to deliver an interoperable and platform-neutral security infrastructure that can breathe integrated with the security of the underlying operating system and services.

    The Java Virtual Machine (JVM)

    The JVM is an abstract computing engine that resides on a host computer. It is the execution environment for the Java programming language and has the primary responsibility for executing the compiled code by interpreting it in a machine-independent and cross-platform fashion. The JVM is often referred to as the Java runtime environment. While executing a Java program running on top of the JVM, the JVM insulates the application from the underlying differences of the operating systems, networks, and system hardware, thus ensuring cross-platform compatibility among outright of the implementations of the Java platform.

    The Java language allows creation of general-purpose programs called Java classes that limn a Java program or an application. The Java classes compile into a format called Java's executable bytecodes, which are quite similar to the machine language that can flee on top of a JVM. The JVM also allows users to download and execute untrusted programs and applications from remote resources or over a network. To support delivery of Java components over the network, the JVM controls the primary security layer by protecting users and the environment from malicious programs. To enable security, the JVM enforces stringent measures ensuring systems security on the host client machine and its target server environments.

    Distributing the executable Java bytecode over a network or running automatically inside a Web browser or a client's machine leads to different security risks and attacks, such as disclosure of the target environment to the untrusted applications and damage or modification of the client's private information and data. For example, Java applets downloaded from a network are not allowed to own access to, read from, or write to a local file system. They are also not allowed to create network connections to any host system except the one where they are deployed. On the other hand, stand-alone Java applications that reside and flee locally as trusted applications are not subjected to these security features. The key issue is that allowing untrusted applications such as Java applets to breathe downloaded from a network via a Web browser and letting them access unavoidable resources on the host computer paves the way for security breaches and becomes a potential avenue for the spread of viruses. To obviate known security breaches and threats, the JVM provides a built-in Java security architecture model, configurable security policies, access control mechanisms, and security extensions. Because of the built-in JVM safety features, Java programs can flee safely and are more securely protected from known vulnerabilities.

    The Java Language

    Java is a general-purpose object-oriented programming language similar to C++. It delivers platform-neutral compiled code that can breathe executed using a JVM and is intended for utilize in distributed application environments, heterogeneous systems, and diverse network environments. The Java language is also designed to provide for the security and integrity of the application and its underlying systems at outright levels—from the Java language constructs to the JVM runtime and from the class library to the complete application.

    The several inherent features of the Java language that provide for the secure Java platform are as follows:

  • The language defines outright primitives with a specific size and outright operations are defined to breathe in a specific order of execution. Thus, the code executed in different JVMs will not vary from the specified order of execution.
  • The language provides access-control functionality on variables and methods in the remonstrate by defining denomination space management for type and procedure names. This secures the program by restricting access to its faultfinding objects from untrusted code. For example, access is restricted by qualifying the type members as public, protected, private, package, etc.
  • The Java language does not allow defining or dereferencing pointers, which means that programmers cannot forge a pointer to the memory or create code defining offset points to memory. outright references to methods and instance variables in the class file are done via symbolic names. The elimination of pointers helps to obviate malicious programs like computer viruses and misuse of pointers such as accessing private methods directly by using a pointer starting from the object's pointer, or running off the stay of an array.
  • The Java remonstrate encapsulation supports "programming by contract," which allows the reuse of code that has already been tested.
  • The Java language is a strongly typed language. During compile time, the Java compiler does extensive type checking for type mismatches. This mechanism guarantees that the runtime data type variables are compatible and consistent with the compile time information.
  • The language allows declaring classes or methods as final. Any classes or methods that are declared as final cannot breathe overridden. This helps to protect the code from malicious attacks such as creating a subclass and substituting it for the original class and override methods.
  • The Java Garbage Collection mechanism contributes to secure Java programs by providing a transparent storage allocation and recovering unused memory instead of deallocating the memory using manual intervention. This ensures program integrity during execution and prevents programmatic access to accidental and incorrect freeing of memory resulting in a JVM crash.
  • With these features, Java fulfills the swear of providing a secure programming language that gives the programmer the license to write and execute code locally or deal it over a network.

    Java Built-in Security Model

    In the previous two sections, they briefly looked at the basic security features provided by the JVM and the Java language. As portion of its security architecture, Java has a built-in policy-driven, domain-based security model. This allows implementing security policies, protecting/controlling access to resources, rule-based class loading, signing code and assigning levels of capability, and maintaining content privacy.

    In the first release of the Sun Java Platform, the Java development Kit 1.0.x (JDK) introduced the notion of a sandbox-based security model. This primarily supports downloading and running Java applets securely and avoids any potential risks to the user's resources. With the JDK 1.0 sandbox security model, outright Java applications (excluding Java applets) executed locally can own full access to the resources available to the JVM. Application code downloaded from remote resources, such as Java applets, will own access only to the restricted resources provided within its sandbox. This sandbox security protects the Java applet user from potential risks because the downloaded applet cannot access or alter the user's resources beyond the sandbox.

    The release of JDK 1.1.x introduced the notion of signed applets, which allowed downloading and executing applets as trusted code after verifying the applet signer's information. To facilitate signed applets, JDK 1.1.x added support for cryptographic algorithms that provide digital signature capabilities. With this support, a Java applet class could breathe signed with digital signatures in the Java archive format (JAR file). The JDK runtime will utilize the trusted public keys to verify the signers of the downloaded applet and then treat it as a trusted local application, granting access to its resources. figure 3-1 shows the representation of a sandbox in the JDK 1.1 security model.

    Java 2 Security Model

    The release of J2SE [J2SE] introduced a number of significant enhancements to JDK 1.1 and added such features as security extensions providing cryptographic services, digital certificate management, PKI management, and related tools. Some of the major changes in the Java 2 security architecture are as follows:

  • Policy-driven restricted access control to JVM resources.
  • Rules-based class loading and verification of byte code.
  • System for signing code and assigning levels of capability.
  • Policy-driven access to Java applets downloaded by a Web browser.
  • In the Java 2 security architecture, outright code—regardless of whether it is flee locally or downloaded remotely—can breathe subjected to a security policy configured by a JVM user or administrator. outright code is configured to utilize a particular domain (equivalent to a sandbox) and a security policy that dictates whether the code can breathe flee on a particular domain or not. figure 3-2 illustrates the J2SE security architecture and its basic elements.

    03fig02.gif

    Figure 3-2 Java 2 Security architecture and basic elements

    Let's win a more minute observe at those core elements of the Java 2 security architecture.

    Protection Domains ( java.security.ProtectionDomain ): In J2SE, outright local Java applications flee unrestricted as trusted applications by default, but they can also breathe configured with access-control policies similar to what is defined in applets and remote applications. This is done by configuring a ProtectionDomain, which allows grouping of classes and instances and then associating them with a set of permissions between the resources. Protection domains are generally categorized as two domains: "system domain" and "application domain." outright protected external resources, such as the file systems, networks, and so forth, are accessible only via system domains. The resources that are portion of the single execution thread are considered an application domain. So in reality, an application that requires access to an external resource may own an application domain as well as a system domain. While executing code, the Java runtime maintains a mapping from code to protection domain and then to its permissions.

    Protection domains are determined by the current security policy defined for a Java runtime environment. The domains are characterized using a set of permissions associated with a code source and location. The java.security.ProtectionDomain class encapsulates the characteristics of a protected domain, which encloses a set of classes and its granted set of permissions when being executed on behalf of a user.

    Permissions ( java.security.Permission ): In essence, permissions determine whether access to a resource of the JVM is granted or denied. To breathe more precise, they give specified resources or classes running in that instance of the JVM the skill to permit or negate unavoidable runtime operations. An applet or an application using a security manager can obtain access to a system resource only if it has permission. The Java Security API defines a hierarchy for consent classes that can breathe used to configure a security policy. At the root, java.security.Permission is the abstract class, which represents access to a target resource; it can also embrace a set of operations to construct access on a particular resource. The consent class contains several subclasses that limn access to different types of resources. The subclasses belong to their own packages that limn the APIs for the particular resource. Some of the commonly used consent classes are as follows:

    For wildcard permissions

    -java.security.AllPermission

    For named permissions

    -java.security.BasicPermission

    For file system

    -java.io.FilePermission

    For network

    -java.net.SocketPermission

    For properties

    -java.lang.PropertyPermission

    For runtime resources

    -java.lang.RuntimePermission

    For authentication

    -java.security.NetPermission

    For graphical resources

    -java.awt.AWTPermission

    Example 3-1 shows how to protect access to an remonstrate using permissions. The code shows the caller application with the required consent to access an object.

    Example 3-1. Using Java permissions to protect access to an object // Create the remonstrate that requires protection String protectedObj = "For trusted eyes only"; // create the required consent that will // protect the object. // Guard, represents an remonstrate that is used to protect // access to another object. Guard myGuard = recent PropertyPermission ("java.home", "read"); // Create the guard GuardedObject gobj = recent GuardedObject(protectedObj, myGuard); // accumulate the guarded object try { remonstrate o = gobj.getObject(); } ensnare (AccessControlException e) { // Cannot access the object }

    Permissions can also breathe defined using security policy configuration files (java.policy). For example, to grant access to read a file in "c:\temp\" (on Windows), the FilePermission can breathe defined in a security policy file (see instance 3-2).

    Example 3-2. Setting Java permissions in policy configuration file grant{ consent java.io.FilePermission "c:\\temp\\testFile", "read"; };

    Policy: The Java 2 security policy defines the protection domains for outright running Java code with access privileges and a set of permissions such as read and write access or making a connection to a host. The policy for a Java application is represented by a Policy object, which provides a way to declare permissions for granting access to its required resources. In general, outright JVMs own security mechanisms built in that allow you to define permissions through a Java security policy file. A JVM makes utilize of a policy-driven access-control mechanism by dynamically mapping a static set of permissions defined in one or more policy configuration files. These entries are often referred to as grant entries. A user or an administrator externally configures the policy file for a J2SE runtime environment using an ASCII text file or a serialized binary file representing a Policy class. In a J2SE environment, the default system-wide security policy file java.policy is located at <JRE_HOME>/lib/security/ directory. The policy file location is defined in the security properties file with a java.security setting, which is located at <JRE_HOME>/lib/security/java.security.

    Example 3-3 is a policy configuration file that specifies the consent for a signed JAR file loaded from "http://coresecuritypatterns.com/*" and signed by "javaguy," and then grants read/write access to outright files in /export/home/test.

    Example 3-3. Setting codebase and permissions in policy configuration file grant signedBy "javaguy", codebase "http://coresecuritypatterns.com/*" { consent java.io.FilePermission "/export/home/test/*", "read,write"; };

    The J2SE environment also provides a GUI-based tool called "policytool" for editing a security policy file, which is located at "<JAVA_HOME>/bin/policytool."

    By default, the Java runtime uses the policy files located in:

    ${java.home}/jre/lib/security/java.policy ${user.home}/.java.policy

    These policy files are specified in the default security file:

    ${java.home}/jre/lib/security/java.security

    The efficient policy of the JVM runtime environment will breathe the union of outright permissions in outright policy files. To specify an additional policy file, you can set the java.security.policy system property at the command line:

    java -Djava.security.manager -Djava.security.policy=myURL MyClass

    To ignore the policies in the java.security file and only utilize the custom policy, utilize '==' instead of '=':

    java -Djava.security.manager -Djava.security.policy==Mylocation/My.policy MyClass

    SecurityManager ( java.lang.SecurityManager ): Each Java application can own its own security manager that acts as its primary security guard against malicious attacks. The security manager enforces the required security policy of an application by performing runtime checks and authorizing access, thereby protecting resources from malicious operations. Under the hood, it uses the Java security policy file to select which set of permissions are granted to the classes. However, when untrusted classes and third-party applications utilize the JVM, the Java security manager applies the security policy associated with the JVM to identify malicious operations. In many cases, where the threat model does not embrace malicious code being flee in the JVM, the Java security manager is unnecessary. In cases where the SecurityManager detects a security policy violation, the JVM will throw an AccessControlException or a SecurityException.

    In a Java application, the security manager is set by the setSecurityManager mode in class System. And the current security manager is obtained via the getSecurityManager mode (see instance 3-4).

    Example 3-4. Using SecurityManager SecurityManager mySecurityMgr = System.getSecurityManager(); if (mySecurityMgr != null) { mySecurityMgr.checkWrite(name); }

    The class java.lang.SecurityManager consists of a number of checkXXXX methods like checkRead (String file) to determine access privileges to a file. The check methods convoke the SecurityManager.checkPermission mode to find whether the calling application has permissions to fulfill the requested operation, based on the security policy file. If not, it throws a SecurityException.

    If you wish to own your applications utilize a SecurityManager and security policy, start up the JVM with the -Djava.security.manager option and you can also specify a security policy file using the policies in the -Djava.security.policy option as JVM arguments. If you enable the Java Security Manager in your application but accomplish not specify a security policy file, then the Java Security Manager uses the default security policies defined in the java.policy file in the $JAVA_HOME/jre/lib/security directory. instance 3-5 programmatically enables the security manager.

    Example 3-5. Using SecurityManager for restricting access control // Before the security manager is enabled, // this convoke is possible System.setProperty("java.version","Malicious: Delete"); try { // Enable the security manager SecurityManager sm = recent SecurityManager(); System.setSecurityManager(sm); } ensnare (SecurityException se) { // SecurityManager already set } // After the security manager is enabled: // This convoke is no longer possible; // an AccessControlException is thrown System.setProperty ("java.version", "Malicious: Delete");

    The security manager can also breathe installed from the command-line interface:

    java -Djava.security.manager <ClassName>

    AccessController ( java.security.AccessController ): The access controller mechanism performs a dynamic inspection and decides whether the access to a particular resource can breathe allowed or denied. From a programmer's standpoint, the Java access controller encapsulates the location, code source, and permissions to fulfill the particular operation. In a typical process, when a program executes an operation, it calls through the security manager, which delegates the request to the access controller, and then finally it gets access or denial to the resources. In the java.security.AccessController class, the checkPermission mode is used to determine whether the access to the required resource is granted or denied. If a requested access is granted, the checkPermission mode returns true; otherwise, the mode throws an AccessControlException.

    For example, to check read and write consent for a directory in the file system, you would utilize the code shown in instance 3-6.

    Example 3-6. Using AccessController try { AccessController.checkPermission (new FilePermission("/var/temp/*", "read,write")); } ensnare (SecurityException e) { // Does not own consent to access the directory }

    Codebase: A URL location of class or JAR files are specified using codebase. The URL may advert to a location of a directory in the local file system or on the Internet. instance 3-7 retrieves outright the permissions granted to a particular class that's been loaded from a code base. The permissions are efficient only if the security manager is installed. The loaded class uses those permissions by executing Class.getProtectionDomain() and Policy.getPermissions().

    Example 3-7. Using codebase class URL codebase = null; try { // accumulate permissions for a URL codebase = recent URL("http://coresecuritypatterns.com/"); } ensnare (MalformedURLException e) { } ensnare (IOException e) { } // Construct a code source with the code base CodeSource cs = recent CodeSource(codebase, null); // accumulate outright granted permissions PermissionCollection pcoll = Policy.getPolicy().getPermissions(cs); // View each consent in the consent collection Enumeration enum = pcoll.elements(); for (; enum.hasMoreElements(); ) { consent p = (Permission)enum.nextElement(); System.out.println("Permission " + p); }

    To test instance 3-7, instance 3-8 is the policy file (test.policy), which provides consent to read outright system properties.

    Example 3-8. Policy file for testing permissions to a codebase grant codebase "http://coresecuritypatterns.com/-" { // Give consent to read outright system properties consent java.util.PropertyPermission "*", "read"; };

    To ignore the default policies in the java.security file, and only utilize the specified policy, utilize '==' instead of '='. With the policy just presented, you may flee the following:

    java -Djava.security.policy==test.policy TestClass

    CodeSource: The CodeSource allows representation of a URL from which a class was loaded and the certificate keys that were used to sign that class. It provides the identical notion as codebase, but it encapsulates the codebase (URL) of the code where it is loaded and also the certificate keys that were used to verify the signed code. The CodeSource class and its two arguments to specify the code location and its associated certificate keys are as follows:

    CodeSource(URL url, java.security.cert.Certificate certs[]);

    To construct a code source with the code groundwork and without using certificates, you would utilize the following:

    CodeSource cs = recent CodeSource(codebase, null);

    Bytecode verifier: The Java bytecode verifier is an integral portion of the JVM that plays the valuable role of verifying the code prior to execution. It ensures that the code was produced consistent with specifications by a trustworthy compiler, confirms the format of the class file, and proves that the series of Java byte codes are legal. With bytecode verification, the code is proved to breathe internally consistent following many of the rules and constraints defined by the Java language compiler. The bytecode verifier may also detect inconsistencies related to unavoidable cases of array bound-checking and object-casting through runtime enforcement.

    To manually control the plane of bytecode verification, the options to the Java command with the V1.2 JRE are as follows:

  • -Xverify:remote runs verification process on classes loaded over network (default)
  • -Xverify:all verifies outright classes loaded
  • -Xverify:none does no verification
  • ClassLoader: The ClassLoader plays a distinct role in Java security, because it is primarily responsible for loading the Java classes into the JVM and then converting the raw data of a class into an internal data structure representing the class. From a security standpoint, class loaders can breathe used to establish security policies before executing untrusted code, to verify digital signatures, and so on. To invoke security, the class loader coordinates with the security manager and access controller of the JVM to determine the security policies of a Java application. The class loader further enforces security by defining the namespace separation between classes that are loaded from different locations, including networks. This ensures that classes loaded from multiple hosts will not communicate within the identical JVM space, thus making it impossible for untrusted code to accumulate information from trusted code. The class loader finds out the Java application's access privileges using the security manager, which applies the required security policy based on the requesting context of the caller application.

    With the Java 2 platform, outright Java applications own the capability of loading bootstrap classes, system classes, and application classes initially using an internal class loader (also referred to as primordial class loader). The primordial class loader uses a special class loader SecureClassLoader to protect the JVM from loading malicious classes. This java.security.SecureClassLoader class has a protected constructor that associates a loaded class to a protection domain. The SecureClassLoader also makes utilize of permissions set for the codebase. For instance, URLClassLoader is a subclass of the SecureClassLoader. URLClassLoader allows loading a class or location specified with a URL.

    Refer to instance 3-9, which shows how a URLClassLoader can breathe used to load classes from a directory.

    Example 3-9. Using URLClassLoader // Create a File remonstrate on the root of the // directory containing the class file File file = recent File("c:\\myclasses\\"); try { // convert File to a URL URL url = file.toURL(); URL[] urls = recent URL[]{url}; // Create a recent class loader with the directory ClassLoader myclassloader = recent URLClassLoader(urls); // Load in the class; // MyClass.class should breathe located in // the directory file:/c:/myclasses/com/security Class myclass = myclassloader.loadClass("com.security.MySecureClass"); } ensnare (MalformedURLException e) { } ensnare (ClassNotFoundException e) { }

    Keystore and Keytool: The Java 2 platform provides a password-protected database facility for storing trusted certificate entries and key entries. The keytool allows the users to create, manage, and administer their own public/private key pairs and associated certificates that are intended for utilize in authentication services and in representing digital signatures.

    We will win a observe in greater detail at the usage of the Java keystore and keytool and how these tools abet Java security in the section entitled "Java Security Management Tools," later in this chapter.


    Sun and Laszlo Bring OpenLaszlo Applications to Java(TM) Platform, Micro Edition Technology | killexams.com real questions and Pass4sure dumps

    Collaboration Adds Laszlo Systems' wealthy Internet development Platform to Java Technology-enabled Devices

    SANTA CLARA, Calif. and SAN MATEO, Calif., Oct. 10 / -- Sun Microsystems Inc. (NASDAQ:SUNW), the creator and leading advocate of Java and Solaris(TM) technology, and Laszlo Systems, Inc., the original developer of OpenLaszlo, a leading open source wealthy Internet development platform, today announced a collaboration to enable OpenLaszlo applications to flee on devices supporting the Java Platform, Micro Edition (Java ME) application environment. With this move, Sun and Laszlo are actively contributing resources to a recent project for the OpenLaszlo community, code-named Orbit.

    With more than 3.8 billion Java-technology devices including 1.2 billion Java technology-powered phones in the world today, Sun has one of the most widely distributed client run-time environments. OpenLaszlo is a widely adopted open source application development platform that uses Ajax-style programming techniques, integrating XML and JavaScript(TM), to create wealthy and robust online experiences. With this endeavor, Sun and Laszlo will work together to bridge OpenLaszlo's eloquent markup language, LZX, with the ubiquity and power of the Java ME platform.

    OpenLaszlo, currently in version 3.3, was designed from its inception to support the instantaneous, no-download deployment of web applications on a diverse set of client runtime environments. Now with further extension to support the Java ME platform, OpenLaszlo will tender an unprecedented plane of development portability and flexibility across a wide variety of Java technology-based phones, television set-top boxes, and other connected devices. Support for OpenLaszlo applications further enhances one of the key strengths of the Java platform -- the skill to support development environments and authoring tools targeting a broad spectrum of developer skills and preferences.

    "The integration of OpenLaszlo and the Java ME platform is another valuable step in the evolution of mobile computing," said Robert Brewin, CTO of Sun Microsystems' software group. "This collaboration will bring the richness of the modern web, the power of Java technology and the unique capabilities of OpenLaszlo together for the benefit of their respective developer communities."

    "We're pleased to breathe working with Sun, which is a colossal step forward in furthering their collective vision of enabling seamless application support for outright connected devices," said David Temkin, founder and CTO of Laszlo Systems. "With both companies' strong commitment to open source and open standards, today's announcement marks a significant milestone towards those efforts."

    Sun and Laszlo anticipate to release the first demonstrable Project Orbit application running under the Java ME platform later this year. For more information on Project Orbit and its goals, tickle visit www.java.net or www.openlaszlo.org/orbit . To become a contributor to the Project, registration is available at www.openlaszlo.org/orbit .

    About Sun Microsystems, Inc.

    A singular vision -- "The Network Is The Computer" -- guides Sun in the development of technologies that power the world's most valuable markets. Sun's philosophy of sharing innovation and pile communities is at the forefront of the next wave of computing: the Participation Age. Sun can breathe organize in more than 100 countries and on the Web at http://sun.com/.

    About Laszlo Systems

    Laszlo Systems is the original developer of OpenLaszlo, the leading open source platform for pile and deploying Web 2.0 applications. OpenLaszlo technology has been widely adopted by application and service providers in the consumer, enterprise, education and government markets. Laszlo Systems provides updates, training and support for OpenLaszlo and offers rich-experience web-based digital life applications such as Laszlo Mail, built on OpenLaszlo.

    For more information about San Mateo, Calif.-based Laszlo Systems, visit www.laszlosystems.com .

    Source: Sun Microsystems, Inc.

    CONTACT: Asa Fenton of gnaw Communications, +1-415-365-0482, or Asa.fenton@bitepr.com, for Sun; or Helena Kimball of Laszlo Systems,+1-650-358-2717, or hkimball@laszlosystems.com

    Web site: www.laszlosystems.com/

    Web site: http://sun.com/

    Related Thomas Industry Update Thomas For Industry

    Product ReviewA Small-Device Power ToolCodeWarrior PersonalJava Platform Edition 1.0 | killexams.com real questions and Pass4sure dumps

    Product ReviewA Small-Device Power ToolCodeWarrior PersonalJava Platform Edition 1.0
  • By L. J. Cohen
  • 10/13/2000
  • There's no doubt about it: The world is going wireless. Providing applications for a fast-emerging generation of mobile computing devices is the challenge of the day. Beyond the sexier wireless applications, embedded devices of outright kinds are pushing programmers into smaller and smaller spaces. Small-device programmers everywhere are charged with the task of providing high-performance, robust apps that won't own much legroom. They requisite outright the abet they can accumulate as they strive to squeeze an ever-swelling package of features and functions into a stampeding herd of the limited-footprint, resource-constrained devices.

    For Java programmers, Sun's PersonalJava standard is making it easier to accumulate this particular job done. Already licensed by more than 1,300 companies (Motorola, Sony, and TCI among them), this subset of the Java 2 Micro Edition (J2ME) is quickly becoming a key technology for mobile computing developers.

    New tools specifically designed to exploit the PersonalJava standard are mount to appear. Products such as Wind River Systems' Personal JWorks and Insignia Solutions' Jeode are creating a recent category of Internet-appliance and embedded-device applications. Among this recent crop of development tools, the newly released Metrowerks CodeWarrior PersonalJava Platform Edition Version 1.0 caught their eye. They asked freelance programmer L. J. Cohen to win the product for a test-drive.

    —John K. Waters Product Review Editor

    Vendor InfoMetrowerks Corp.9801 Metric Blvd.Austin, TX 78758800.377.5416http://www.metrowerks.com

    THE METROWERKS CODEWARRIOR IDE has been around for a number of years, and because it's easy-to-use, Mac compatible, and so many junior colleges and universities recommend it to their programming students (there's a student version of the product), it has grown a fairly substantial fan base.

    As one of those fans, I was delighted to learn the company had released a version of the product this past summer for small-device programmers. CodeWarrior PersonalJava Platform Edition 1.0 offers excellent support for Sun's PersonalJava technology.

    PersonalJava is a subset of the J2ME, which is used to develop applications for devices such as set-top boxes, Internet-connected cell phones, PDAs, and automotive navigation systems. The recent CodeWarrior IDE accelerates the development of PersonalJava applets and applications that target these kinds of networkable consumer devices.

    The recent CodeWarrior IDE supports the PersonalJava 3.1 platform and combines most if not outright of the features developers anticipate in a kindly IDE. The product is touted by the vendor as "a complete tool suite for PersonalJava development," and I'd own to grunt they're not exaggerating. The product offers: a Java compiler; Rapid Application development (RAD) for the Abstract Windowing Toolkit (AWT) GUI library; JavaCheck (see figure 1), which provides validation of an application's API requirements with the PersonalJava API; and a Project Template that provides developers with a quick start to creating PersonalJava applications.

    Figure 1Figure 1. PersonalJava Platform Edition 1.0 validates code using the JavaCheck testing tool.

    The product includes outright the tools and functionality of the traditional CodeWarrior IDE. It also comes with the Truffle Graphical Toolkit, with which developers can create customized interfaces. It supports version control through third-party products such as Microsoft SourceSafe and Merant PVCS. And if you want to disassemble your compiled source code and view the machine code, it'll let you accomplish that too.

    I installed the CodeWarrior PersonalJava Edition from a CD onto a Pentium III-based desktop PC running Windows 98. Not much to grunt here, except that the wizard-managed installation came off without a hitch.

    The tool comes with an emulation environment for analyzing, verifying, and debugging code, which you select to install at the mount of the installation routine. (I can't Think of a intuition not to install it.) According to both Metrowerks and Sun, any code that operates in CodeWarrior's emulation environment will flee on any PersonalJava certified device.

    Working with the product was—no surprise—easy and intuitive. I particularly liked the project templates and wizards, which tender quick starting of Java and PersonalJava applets and applications (which is why you bought the product), but also Beans, Java Stationary, and Project Makefiles. The product also allows users to set markers at specific locations inside the code for easy navigation. Also, you can right-click on any mode to find the definition and outright the implementations—very wintry and a real time-saver.

    To create a simple PersonalJava app (for this review, a stock-ticker-like text display), I chose a template (although the product gave me the option of pile it from scratch). I was then able to work with a project preconfigured with outright the necessary libraries and source files. The unifying "entity" here is the project, which is a gathering of source files, resource files, compiler and linker switches, and parameters.

    The speed, integration, and flexibility of the product are truly impressive. CodeWarrior manages projects visually. Adding a source file to a project is simply a matter of dragging its icon from the desktop and dropping it into the project window. For outright intents and purposes, you can create, compile, link, and debug a project with a couple of mouse clicks. I was particularly pleased with the built-in debuggers for the Sun VM, the Apple MRJ, and PersonalJava emulation environment (PJEE).

    The product's File menu contains an updated recent command, with which users create files, projects, RAD designs, and objects. The recent command also lets users access CodeWarrior's Makefile Importer and RAD wizards.

    Developers of large, involved remonstrate models will treasure the straightforward navigability of the class hierarchy in this product. The class browser is a powerful and simple-to-use feature that lets you maneuver to precise locations in your source code, quickly and easily.

    I was probably most impressed with the product's debugging capabilities. You turn on the debugger from within the Project pull-down menu (not the Debug pull-down menu—go figure), and you set conditional breakpoints from within the editor with a right-click of the mouse. The product also provides menu options that allow you to single-step through the code and even change program counters. A syntax mistake at compilation opens a fully functioning editor window, with the insertion point set automatically to the offending statement.

    As I mentioned earlier, the JavaCheck testing tool is integrated with CodeWarrior. To validate my code—to manufacture sure that it conformed to the PersonalJava spec—I simply set the post-link compiler to execute JavaCheck.

    Running the application within the PJEE is the final step, if you want to manufacture sure it's going to flee in a PersonalJava environment. This involved a command-line convoke with the denomination of the class file, but having the emulator successfully display my text gave me a real sense of assurance that the application would work later on.



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    References :


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