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00M-228 IBM WebSphere Cast Iron Sales Mastery Test v1

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00M-228 exam Dumps Source : IBM WebSphere Cast Iron Sales Mastery Test v1

Test Code : 00M-228
Test name : IBM WebSphere Cast Iron Sales Mastery Test v1
Vendor name : IBM
: 52 true Questions

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IBM IBM WebSphere Cast Iron

SugarCRM pronounces New Integrations with IBM utility | killexams.com true Questions and Pass4sure dumps

SAN FRANCISCO--(company WIRE)--SugarCRM, the world’s fastest becoming consumer relationship management (CRM) enterprise, nowadays announced new options that raise the means for agencies around the world to conduct convivial business, gain deeper perception into their statistics and achieve greater counsel circulation interior their organizations.

the new application builds on the growing to be relationship between SugarCRM and IBM to serve corporations execute advertising classes, develop earnings, hold purchasers and create custom enterprise purposes.

available today, the new options encompass an integration between SugarCRM and IBM LotusLive, new connectors for IBM Cognos company Intelligence Suite and IBM Websphere forged iron for SugarCRM integration platform. The announcements maintain been made during SugarCon, SugarCRM’s annual consumer, associate and developer convention.

“These new mixed options and connectors to effective IBM solutions extends the existing relationship between SugarCRM and IBM,” said Clint Oram, co-founder and CTO of SugarCRM. “As a member of IBM’s international Alliance Portfolio, they are dedicated to presenting compelling options for enterprises around the globe."

available today: convivial CRM with SugarCRM for LotusLive

available nowadays, SugarCRM for LotusLive locations convivial company capabilities into the arms of SugarCRM clients. by combining CRM and collaboration capabilities together with web conferencing and doc sharing capabilities remedy interior the Sugar equipment, sales, advertising and usher gurus can greater interact with their possibilities and consumers thus shortening revenue cycles and lengthening consumer delight and loyalty. the combination will likewise be leveraged by each SugarCRM and IBM LotusLive valued clientele.

"Social corporations are more engaged with their consumers, partners and colleagues," said Sean Poulley, vice chairman, convivial enterprise Cloud at IBM and a keynote speaker at this year’s SugarCon. "the integration of SugarCRM and LotusLive allows for deeper tiers of collaboration throughout enterprise boundaries making the manner of helping your clients and structure loyalty less complicated and greater helpful."

As a share of the launch of SugarCRM for LotusLive, IBM is offering SugarCRM clients a 30-day no cost visitation of LotusLive. For extra tips and to beginning your no cost trial, contend with: http://www.sugarcrm.com/lotuslive

commercial enterprise company Intelligence with Cognos and SugarCRM

The newly announced integration between IBM’s Cognos company Intelligence Suite and SugarCRM will proffer users of the mixed systems advanced reporting, analytics, dashboarding and scorecarding round their CRM information. With the mixed answer, groups can achieve greater insight into revenue, advertising and consumer assist activities, providing predictability into these crucial trade segments.

Seamless Integration with Websphere forged iron

The most effective manner to optimize a CRM gadget is to populate it with wealthy records from legacy and different third-birthday celebration techniques. Websphere forged iron for SugarCRM makes integration easy, leveraging commonplace internet capabilities to create a seamless circulation of facts into and out of a SugarCRM example. And, with Websphere forged iron for SugarCRM, that you may combine cloud-based mostly or on-premise options with Sugar with the equal ease and simplicity.

“the consume of IBM Websphere forged iron integration, SugarCRM users can now extract extra price from their CRM investment with the aid of getting true-time access to customer suggestions locked away in other enterprise applications,” spoke of David Wilson, vp, WebSphere trade companions. “With Websphere cast iron integration, SugarCRM shoppers secure a 360-degree view of their clients devoid of logging into varied applications and are able maximize their productivity."

About IBM:

For extra suggestions about IBM, tickle consult with www.ibm.com

About SugarCRM

SugarCRM makes CRM basic. as the world's quickest starting to be consumer relationship administration (CRM) enterprise, SugarCRM functions maintain been downloaded greater than nine million times and currently serve over 800,000 discontinue users in eighty countries. Over 7,000 customers maintain chosen SugarCRM's On-website and Cloud Computing features over proprietary alternatives. SugarCRM has been identified for its consumer success and product innovation by CRM journal, InfoWorld, customer interplay options and quick-witted business.

For extra assistance, name (408) 454-6900 or 1 87 SUGARCRM toll-free within the US, e-mail contact@sugarcrm.com, or talk over with http://www.sugarcrm.com.


Watch IBM's cast iron Acquisition intently: SaaS Integration in Play | killexams.com true Questions and Pass4sure dumps

No influence found, try new keyword!Phil Wainewright sums up the deal properly: IBM purchased cast iron techniques since it without problems had nothing in its huge Websphere toolbox that could achieve cloud integration. I simply heard the company’s SVP of it...

IBM Buys Sterling Commerce For $1.4 Billion | killexams.com true Questions and Pass4sure dumps

IBM is purchasing Sterling Commerce for $1.four billion. it's IBM’s greatest acquisition on account that buying Cognos in 2007 for $922 million.

The acquisition of the AT&T enterprise is suppositious to enhance IBM’s middleware portfolio and serve purchasers develop greater quick-witted enterprise networks. Gartner believes the acquisition is a complement to IBM’s acquisition of cast iron techniques a few weeks ago.

The transaction ambiance is undergoing speedy exchange as valued clientele more and more manufacture purchases on-line and through digital techniques by the consume of any number of roundabout channels. IBM’s expectation is that Sterling Commerce will simplify the course companies connect and talk with companions, shoppers and suppliers through an on-premise infrastructure or cloud beginning model.

Sterling Commerce provides trade transaction, promoting and fulfillment software. IBM’s purpose is to accelerate IBM’s efforts to tangle greater share in the company integration application and features market.

Gartner’s Benoit Lheureux says the acquisition indicates the deepening activity in the B2B area:

“We’re already engaged on a consolidated response to this acquisition as well, but capturing from the hip birthright here’s just a few introductory reactions:

* acquired by course of IBM WebSphere neighborhood, along with cast iron, Lombardi, etc. — they’re decisively assembling a lotta B2B horsepower

* The WebSphere neighborhood now has even *greater* integration software — hello, has anyone seen my software roadmap GPS?

* Sterling Collaborative community + forged iron Cloud == A workable integration as a provider offering for each ordinary ecommerce & Cloud capabilities

* The WebSphere neighborhood now has a bunch of Apps — some inherently multi-business Apps — that’s a august deal *on top* of application infrastructure

* IBM has pitched this acquisition in the context of “Dynamic enterprise Networks” — extra expansive, but builds upon enterprise procedure networks”

Gartner estimates the market is $5 billion. it is turning out to be at 10% annual expense.

IBM is spending aggressively to expand its choices. The trade is on tempo to spend $20 billion in acquisitions by using 2015.


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IBM WebSphere Cast Iron Sales Mastery Test v1

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Artifical Intelligence (AI) Influence on Internet of Things (IoT) and Mesh Technology Transforming Tech Industry | killexams.com true questions and Pass4sure dumps

PALM BEACH, Florida, March 8, 2018 /PRNewswire/ --

MarketNewsUpdates.com intelligence Commentary 

Artificial Intelligence continued influence and advancements for The Internet of Things (IoT) is transforming how businesses and consumers fade about their daily activities. The technology that underlies this whole segment is evolving quickly, whether it's the rapid mount of the Amazon reverberate and voice assistants upending the consumer space, or growth of AI-powered analytics platforms for the enterprise market. The Internet of Things (IoT) space is one of the hottest avenues within the tech sector as society becomes increasingly connected to the web at total times. Due to the rapid growth, advancements and consumer demand, the Boston Consulting Group is forecasting the sector to top $267 billion in revenues within two years. Additionally, the number of firms investing in the evolution of IoT platforms and technologies is rising, particularly as the infusion of mesh technology will serve to enhance the operating efficiency of IoT platforms, enabling companies to develop and release new platforms for consumers and businesses alike. dynamic companies in the markets this week comprise Gopher Protocol Inc. (OTC: GOPH), Microsoft Corporation (NASDAQ: MSFT), NVIDIA Corporation (NASDAQ: NVDA), Facebook Inc. (NASDAQ: FB), Alphabet Inc. (NASDAQ: GOOG) (NASDAQ: GOOGL).

Gopher Protocol Inc. (OTCQB: GOPH) BREAKING NEWS: Gopher Protocol, a company specializing in the creation of Internet of Things (IoT) and artificial Intelligence enabled mobile technologies, announced a closing of the sale of a convertible debenture containing a fixed conversion price, which generated $750,000 in low proceeds. The details on the funding can be create in the Company's shape 8-K - https://www.sec.gov/Archives/edgar/data/1471781/000161577418001621/s109251_8k.htm.

The financing is share of the Company's strategy to reduce its dependence on derivative convertible financing and create a balance sheet that gives investors clarity regarding the number of shares outstanding and potential dilution caused by convertible debenture financing. The investor that participated in this financing may, in its sole discretion, provide additional funding to the Company at similar terms of the current funding.  

As previously announced on January 2, 2018 ( https://finance.yahoo.com/news/gopher-protocol-closes-growth-financing-140000380.html ), an investor, that had previously acquired convertible debt from the Company, invested $1 million in a common equity financing and agreed to potentially purchase an additional $500,000 in its discretion, potentially bringing the total investment to $1.5 million. Read this and more intelligence for GOPH at http://www.marketnewsupdates.com/news/goph.html

"The Company is pleased to be on a august track financially, it should be a very positive signal to the market that in January 2018, a private accreditor investor made the transition from being a lender to an equity investor" stated Greg Bauer, CEO. "We believe the closing of the current convertible debenture with a fixed conversion price supports the notion that the investment community agrees that Gopher is on the birthright track, going forward", added Greg Bauer, CEO. Gopher Protocol has made a concerted pains to de-lever its balance and add shareholder equity to the balance sheet. As reported on its most recent shape 8-K, the Company continues to ameliorate its financial outlook by eliminating total derivative liabilities by paying off its reaming derivative liability on March 5, 2018.  

Along with the recently announced growth capital financing, the Company is positioned to pursue growth and fund the rollout of its new technologies. The de-levering is share of the Company's strategy to reduce its dependence on variable convertible debt financing and create a balance sheet that gives investors clarity regarding the number of shares outstanding and potential dilution caused by historical variable convertible debt financing.  

"We are pleased to manufacture this string of announcements, which they believe is evidence of the fact that they are on track to complete many of the tasks that I maintain laid out including their absorbing of their recent acquisition, as well as potentially new acquisitions, as they hunt to combine their distribution channels with their new technologies," stated Greg Bauer, CEO. "In simple words, the Company's debt schedule following the current funding and the payment of the last derivative liability result in only one outstanding liability of $750,000 that may potentially be converted into common stock at a fixed price" added Greg Bauer, CEO.

In other Tech and AI developments in the markets of note: 

Microsoft Corporation (NASDAQ: MSFT) is planning to comprise more artificial intelligence capabilities inside Windows 10 soon. The software giant is unveiling a new AI platform, Windows ML, for developers today, that will be available in the next major Windows 10 update available this spring. Microsoft's new platform will enable total developers that create apps on Windows 10 to leverage existing pre-trained machine learning models in apps. Windows ML will enable developers to create more powerful apps for consumers running Windows 10. Developers will be able to import existing learning models from different AI platforms and rush them locally on PCs and devices running Windows 10, speeding up real-time analysis of local data enjoy images or video, or even improving background tasks enjoy indexing files for quick search inside apps. Microsoft has already been using AI throughout Office 365, inside the Windows 10 Photos app, and even with its Windows Hello facial recognition to allow Windows 10 users to symptom into PCs and laptops with their faces.

NVIDIA Corporation (NASDAQ: NVDA) is one of the most prominent IoT hardware companies in the market at this moment. Nvidia's Tegra automotive systems chips are already an integral share of Tesla Motors' complete lineup, powering the self-driving capabilities of the Model S, Model X and Model 3. The company likewise recently announced partnerships with auto parts manufacturer Bosch, to ameliorate upon AI in automobiles, and with Audi, to reserve the first fully self-driving car on the market by 2020.

Facebook Inc. (NASDAQ: FB) recently obtained a patent for a new sort of robot, one that can swiftly transform into a unique "two-wheeled self-balancing mode." In documents recently made public, Scott C. Wiley, an inventor at Facebook, circumstantial how the futuristic robot would work, providing rudimentary sketches of its appearance. If the drawings prove accurate, it will attain equipped with a camera and microphone, a rotatable "main arm" and a set of wheels to serve it zoom around. The filing states: "The robot includes a corpse and a pair of drive wheels located at a first discontinue portion of the body. Each drive wheel is coupled to a drive assembly operative to propel the robot along a surface. A third wheel is located on the corpse at a second discontinue portion contrary the first discontinue portion.

Alphabet Inc. (NASDAQ: GOOG) (NASDAQ: GOOGL) recently announced its latest artificial intelligence home product in its "Google Clips" device. The $249 device, which is designed to clip onto furniture or other fixed objects, automatically captures subjects that rove into its viewfinder. But unlike some trail or security cameras that are triggered by motion or programmed on timers, Clips is more discerning. Google has trained its electronic brain to recognize smiles, human faces, dogs, cats and rapid sequences of movement. The company sees broad potential with parents and pet owners looking to grab candid shots of kids and animals. The Clip shoots seven-second videos, without audio, that can be edited into GIFs or high-definition photos. These images can then be downloaded and shared via smartphone. But Google's bigger ambition is the mastery - and commercialization - of artificial intelligence, an zone where it is investing big. Google executives insist success requires taut integration between hardware and software, which is why the search-engine giant keeps plugging away at consumer electronics.

DISCLAIMER: MarketNewsUpdates.com (MNU) is a third party publisher and intelligence dissemination service provider, which disseminates electronic information through multiple online media channels. MNU is NOT affiliated in any manner with any company mentioned herein. MNU and its affiliated companies are a intelligence dissemination solutions provider and are NOT a registered broker/dealer/analyst/adviser, holds no investment licenses and may NOT sell, proffer to sell or proffer to buy any security. MNU's market updates, intelligence alerts and corporate profiles are NOT a solicitation or recommendation to buy, sell or hold securities. The material in this release is intended to be strictly informational and is NEVER to be construed or interpreted as research material. total readers are strongly urged to accomplish research and due diligence on their own and consult a licensed financial professional before considering any even of investing in stocks. total material included herein is republished content and details which were previously disseminated by the companies mentioned in this release. MNU is not liable for any investment decisions by its readers or subscribers. Investors are cautioned that they may lose total or a portion of their investment when investing in stocks. For current services performed MNU has been compensated twenty three hundred dollars for intelligence coverage of the current press releases issued by Gopher Protocol Inc. by a non-affiliated third party. MNU HOLDS NO SHARES OF ANY COMPANY NAMED IN THIS RELEASE.

This release contains "forward-looking statements" within the import of Section 27A of the Securities Act of 1933, as amended, and Section 21E the Securities Exchange Act of 1934, as amended and such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. "Forward-looking statements" report future expectations, plans, results, or strategies and are generally preceded by words such as "may", "future", "plan" or "planned", "will" or "should", "expected," "anticipates", "draft", "eventually" or "projected". You are cautioned that such statements are topic to a army of risks and uncertainties that could antecedent future circumstances, events, or results to disagree materially from those projected in the forward-looking statements, including the risks that actual results may disagree materially from those projected in the forward-looking statements as a result of various factors, and other risks identified in a company's annual report on shape 10-K or 10-KSB and other filings made by such company with the Securities and Exchange Commission. You should deem these factors in evaluating the forward-looking statements included herein, and not plot undue reliance on such statements. The forward-looking statements in this release are made as of the date hereof and MNU undertakes no responsibility to update such statements.

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Java Cryptography | share 3 | killexams.com true questions and Pass4sure dumps

After you maintain secured your private electronic information using encryption and learned how to encrypt and digitally symptom files for others, how achieve you extract the information and determine who encrypted the file? Asymmetric public/private key encryption allows you to decipher the information and verify the accompanying digital signature if it exists.

This article illustrates how to decrypt and verify the digital signature on files encrypted using a hybrid combination of asymmetric public/private key encryption and symmetric encryption. A symmetric key is used to encrypt the file and the asymmetric public key encrypts the symmetric key. The asymmetric private key decrypts the symmetric key which in turn is used to decrypt the encrypted file.

Figure1: Asymmetric Key Encryption Functions

The same pair of keys can be used with digital signatures. The private key is used to symptom a file and generate a digital signature. The public key is used to verify the authenticity of the signature.

Figure 2: Asymmetric Key Signature Functions

The decryption technique requires the Java libraries developed by the Legion of the Bouncy Castle (www.bouncycastle.org). The Bouncy Castle jars, bcprov-jdk15on-147.jar and bcpkix-jdk15on-147.jar, contains total the methods required to encrypt, decrypt, symptom and verify a digital signature. The following Java code snippet loads the BouncyCastle provider, which implements the Java Cryptography Security services such as algorithms and key generation.

import org.bouncycastle.jce.provider.*;java.security.Security.addProvider(new BouncyCastleProvider());

Decryption for Files or Java ObjectsOnce a file has been encrypted and/or signed using the DocuArmor application, it can be deciphered by the owner of the matching asymmetric private key. The process involves reading the header, extracting the symmetric key and deciphering the appended encrypted data. The following steps along with the Java code snippets illustrate the process used to decrypt an encrypted file.

Step 1: Assume you want to decrypt the encrypted file, C:\sampleFile.txt.jxdoe_nnnn.asg and the String variable, tUniqueAlias = "jxdoe_nnnn", holds the alias associated to the encrypted file. Read the header from the encrypted file and determine decrypted output name.

File tSrcFile = new File("C:\\sampleFile.txt." + tUniqueAlias + ".aes");String tDecryptFile = tSrcFile.getName();tDecryptFile = tDecryptFile.substring(0, tDecryptFile.lastIndexOf('.'));tDecryptFile = tDecryptFile.substring(0, tDecryptFile.lastIndexOf('.'));OutputStream tFileOStream = new FileOutputStream(tDecryptFile);DataInputStream tDInStream =new DataInputStream(new FileInputStream(tSrcFile));Object tRC = CryptoHeader.readHeader(tDInStream);CryptoHeader tHead = (CryptoHeader)tRC;

Step 2: The private key is stored in a Java key store and is password protected. Load the key store using your password. Retrieve the asymmetric private key from the key store using the same password. The asymmetric private key will be used to decrypt the symmetric key.

FileInputStream tFIStream = new FileInputStream("C:\\jxdoe_nnnn.jks");KeyStore tMyKStore = KeyStore.getInstance("JKS", "SUN");char[] tPW = "password".toCharArray();tMyKStore.load(tFIStream, tPW);PrivateKey tPrivKey = (PrivateKey)tMyKStore.getKey("jxdoe_nnnn", tPW);

Figure 3: Private Key

Step 3: Generate a Java Cipher remonstrate using the asymmetric private key and set its mode to "Cipher.UNWRAP_MODE".

Cipher tCipherRSA = Cipher.getInstance("RSA", "BC");tCipherRSA.init(Cipher.UNWRAP_MODE, (PrivateKey)tPrivKey);

Step 4: consume the Java Cipher and asymmetric private key to unwrap the symmetric key. It's located in the header at the instance variable, wrappedSymKey or wrappedSymKeyOther, along with symmetric algorithm at symKeyAlgDesc. The symmetric key will be used to decrypt the file.

String tAlg = tHead.symKeyAlgDesc();Key tSymmetricKey =tCipherRSA.unwrap(tHead.wrappedSymKey(),tAlg, Cipher.SECRET_KEY);

Figure 4: Unwrap Symmetric Key

Step 5: Re-initialize the same Cipher to Cipher.DECRYPT_MODE. consume the Cipher and the asymmetric private key to decrypt the initialization vector stored within the header at the instance variable initVector or initVectorOther.

tCipher.init(Cipher.DECRYPT_MODE, (PrivateKey)tPrivKey);byte[] tInitVector = tCipher.doFinal(tHead.initVector());IvParameterSpec tIvParmSpec = new IvParameterSpec(tInitVector);

Figure 5: Unwrap Initialization Vector

Step 6: Generate a Java Cipher remonstrate using the symmetric key and initialization vector and set its mode to "Cipher.DECRYPT_MODE". The string representing the symmetric algorithm, mode and padding can be extracted from the Cryptography header using the "transformation" method.

tCipherDecrypt = Cipher.getInstance("AES/CTR/PKCS7Padding", "BC");or tCipherDecrypt = Cipher.getInstance(tHead.transformation(), "BC");tCipherDecrypt.init(Cipher.DECRYPT_MODE, tSymmetricKey, tIvParmSpec);

Step 7: consume the Java Cipher to decrypt the comfort of the file to a Java FileOutputStream. The DataInputStream points to the start of the encrypted data after reading the header. The discontinue result is a decrypted file.

byte[] tInBuffer = new byte[4096];byte[] tOutBuffer = new byte[4096];int tNumOfBytesRead = tDInStream.read(tInBuffer);while (tNumOfBytesRead == tInBuffer.length) {//-Encrypt the input buffer data and store in the output bufferint tNumOfBytesUpdated =tCipherDecrypt.update(tInBuffer, 0, tInBuffer.length, tOutBuffer);tFileOStream.write(tOutBuffer, 0, tNumOfBytesUpdated);tNumOfBytesRead = tDInStream.read(tInBuffer);}//-Process the remaining bytes in the input file.if (tNumOfBytesRead > 0) {tOutBuffer = tCipherDecrypt.doFinal(tInBuffer, 0, tNumOfBytesRead);} else {tOutBuffer = tCipherDecrypt.doFinal();}tFileOStream.write(tOutBuffer, 0, tOutBuffer.length);tFileOStream.close();

Figure 6: Decipher the Encrypted File

Step 7a: If the encrypted file contains a Java object, consume the Java Cipher to decrypt the comfort of the file to a Java ByteArrayOutputStream instead of a FileOutputStream. The discontinue result can be converted to an instance of its original Java class.

ByteArrayInputStream tBAIS = new ByteArrayInputStream(tBAOS.toByteArray());  ObjectInput tOIS = new ObjectInputStream(tBAIS);Object tObject = tOIS.readObject();  //-Original Java objecttBAOS.close();tBAIS.close();tOIS.close();

Alternatively, the same technique can be used to decrypt the encrypted file using the symmetric key that was wrapped with the CA or owner's asymmetric public key. If the file was encrypted for another user, the owner can decrypt it using the additionally wrapped symmetric key. If the file was encrypted for oneself, the CA can decrypt it using the additionally wrapped symmetric key in the enterprise version.

Signature VerificationWhen a file has been digitally signed with a user's asymmetric private key, the signature is stored in the Cryptography header. The signature can be validated with the user's matching asymmetric public key stored in a certificate. The process involves reading the header, extracting the digital signature and validating it against the comfort of the signed file and the asymmetric public key. The following steps report the process used to verify a digital signature.

Step 1: Assume you want to verify the signature on the encrypted and digitally signed file, "C:\sampleFile.txt.jxdoe_nnnn.asg" and the String variable, tUniqueAlias = "jxdoe_nnnn", holds the alias associated to the file. Read the header from the signed file. After the header is read, preserve in intuition that the DataInputStream now points to the beginning of the encrypted data.

File tSrcFile = new File("C:\\sampleFile.txt." + tUniqueAlias + ".asg");DataInputStream tDInStream =new DataInputStream(new FileInputStream(tSrcFile));Object tRC = CryptoHeader.readHeader(tDInStream);CryptoHeader tHead = (CryptoHeader)tRC;byte[] tCurrSignature = tHead.signature();

Step 2: Retrieve the certificate whose name is stored in the header and contains the asymmetric public key needed for verification. Retrieve the asymmetric public key from the certificate associated with the digital signature.

String tCertName = "C:\\" + tHead.verifySigCertName();InputStream tInStream = new FileInputStream(tCertName);CertificateFactory tFactory = CertificateFactory.getInstance("X.509","BC");X509Certificate tCert =(X509Certificate)tFactory.generateCertificate(tInStream);tInStream.close();PublicKey tPubKey = tCert.getPublicKey();

Figure 7: Extract Public Key

Step 3: Instantiate a Java signature engine and initialize it with the signature algorithm stored in the header and the asymmetric public key. The default value is "SHA512WithRSAEncryption".

Signature tSgnVerifyEngine = null;String tSigAlg = tHead.signatureAlgDesc();tSgnVerifyEngine = Signature.getInstance(tSigAlg,"BC");tSgnVerifyEngine.initVerify(tPubKey);

Step 4: consume the Java signature engine to process the comfort of the signed file and cipher a hash number that will be compared with the signature stored in the header.

int tBlockSize = 4096;byte[] tBuffer = new byte[tBlockSize];int tLength = tDInStream.read(tBuffer);while (tLength == tBlockSize) {tSgnVerifyEngine.update(tBuffer, 0, tBlockSize);tLength = tDInStream.read(tBuffer);} if (tLength > 0) {tSgnVerifyEngine.update(tBuffer, 0, tLength);}

Step 5: After the file has been processed, consume the Java signature engine to verify its result with the digital signature. A Boolean result is returned on whether the signature was valid.

Boolean tResult = tSgnVerifyEngine.verify(tCurrSignature);

SummaryThe article demonstrates how to decrypt and verify the digit signature of and encrypted file using Java Cryptography methods and the Cryptography libraries from Bouncy Castle organization. Using the information provided within the Cryptography header, the user can validate who encrypted its contents and/or decipher the encrypted file. The header likewise provides the flexibility to expand the usage of Cryptography such as allowing multiple recipients to decrypt a file by using each of their public keys to encrypt the same symmetric key. As society adopts file encryption as a touchstone course of protection, more creative uses will be invented by future Cyber warriors.

The source code (LaCryptoJarSample.java) is available on the ratiocinative Answers Inc. website under the education web page as an individual file and likewise within the zip file, laCrypto-4.2.0.zipx.

References and Other Technical NotesSoftware requirements:

  • Computer running Windows XP or higher...
  • Java Runtime (JRE V1.7 or higher)
  • Recommended reading:

  • "Beginning Cryptography with Java" by David Hook.
  • "The Code Book" by Simon Singh

  • Multiple Inheritance in Java | killexams.com true questions and Pass4sure dumps

    When Sun was designing Java, it omitted multiple inheritance - or more precisely multiple implementation inheritance - on purpose. Yet multiple inheritance can be useful, particularly when the potential ancestors of a class maintain orthogonal concerns. This article presents a utility class that not only allows multiple inheritance to be simulated, but likewise has other far-reaching applications.

    Have you ever create yourself wanting to write something similar to:

    public class Employee extends Person, Employment {// detail omitted}

    Here, Person is a concrete class that represents a person, while Employment is another concrete class that represents the details of a person who is employed. If you could only reserve them together, you would maintain everything necessary to define and implement an Employee class. Except in Java - you can't. Inheriting implementation from more than one superclass - multiple implementation inheritance - is not a feature of the language. Java allows a class to maintain a separate superclass and no more.

    On the other hand, a class can implement multiple interfaces. In other words, Java supports multiple interface inheritance. Suppose the PersonLike interface is:

    public interface PersonLike {String getName();int getAge();}

    and the EmployeeLike interface is:

    public interface EmployeeLike {float getSalary();java.util.Date getHireDate();}

    This is shown in figure 1.

    If Person implements the Person-Like interface, and Employment implements an EmployeeLike interface, it's perfectly acceptable to write:

    public class Employee implements PersonLike, EmployeeLike {// detail omitted}

    Here there is no categorical superclass. Since they are allowed to specify at most one superclass, they could likewise write:

    public class Employee extends Person implements PersonLike, EmployeeLike {// detail omitted}

    We would necessity to write the implementation of EmployeeLike, but the implementation of PersonLike is taken permeate of through the Person superclass. Alternatively they might write:

    public class Employee extends Employment implements PersonLike, EmployeeLike{// detail omitted}

    This is the contrary situation: the EmployeeLike interface is taken permeate of through the Employment superclass, but they achieve necessity to write an implementation for PersonLike.

    Java does not support multiple implementation inheritance, but does support multiple interface inheritance. When you read or overhear someone remark that Java does not support multiple inheritance, what is actually meant is that it does not support multiple implementation inheritance.

    Stay AdaptableSuppose then that you maintain the concrete implementations Person, which implements the PersonLike interface, and Employment, which implements the EmployeeLike interface. Although only one can be selected to be the superclass, it would be useful to in a manner of speaking exploit the other implementation.

    The easiest course to achieve this in Java is by applying the (Object) Adapter pattern. If they manufacture Person the superclass, they can consume Employment using an remonstrate adapter held within the employee:

    public class Employee extends Person implements PersonLike, EmployeeLike {private EmployeeLike employment = newEmployment();public float getSalary() { returnemployment.getSalary(); }public java.util.Date getHireDate() { recrudesce employment.getHireDate(); }}

    For each manner of EmployeeLike, the employee delegates to the remonstrate adapter. This helps motivate the determination as to whether Person or Employment should be the superclass; elect the one with the most methods as the superclass so there will be less manual delegation code to write when dealing with the other interface.

    The Adapter pattern is a fine course to support multiple interface inheritance while exploiting two concrete implementations. Indeed, it's more often the case that an anonymous inner class is used as the remonstrate adapter, allowing customization of behavior with respect to the context (of being embedded within a subclass).

    However, writing that delegation code is tedious, especially if both interfaces to be implemented maintain many methods in them. In many cases, they can secure Java to achieve the delegation to the would-be superclass(es) automatically.

    Enter Dynamic ProxiesDynamic proxies were introduced into Java in J2SE v1.3. share of the java.lang.reflect package, they allow Java to synthesize a class at runtime. The methods supported by this synthesized class are specified by the interface (or interfaces) that it implements. The implementation is taken permeate of through an invocation handler (java.lang.reflect.InvocationHandler) that is handed an remonstrate representing the manner being invoked (java.lang. reflect.Method). As you can see, dynamic proxies consume heavy doses of the Java Reflection API.

    This then is the key to simulating multiple implementation inheritance within Java. They can write a custom InvocationHandler that is constructed with a set of classes; these portray the superclasses of the subclass to be synthesized. The interface(s) of their subclass will be the union of the interfaces implemented by these superclasses. Their InvocationHandler will instantiate instances of these superclasses so that it can delegate to them. They then marshal it so that the invocation handler, on being given a manner to be invoked, will reflectively invoke the manner on the usurp superclass remonstrate instance. (There must be one; remember the subclass's interface is derived from the superclass's, so at least one superclass must be able to ply the manner invocation.)

    To manufacture things simple, they can manufacture their InvocationHandler implementation likewise recrudesce the proxy. In other words, the invocation handler can act as a factory, able to recrudesce instance(s) of the synthesized subclass that will delegate to the superclass instances. They convoke their invocation handler implementation DelegatorFactory for this reason:

    // imports omittedpublic final class DelegatorFactoryimplements InvocationHandler {public remonstrate getObject() {return Proxy.newProxyInstance(this.getClass().getClassLoader(),getSupportedInterfaces(),this);}}// code omitted}

    The supported interfaces of the resultant remonstrate are derived from the superclasses provided in the DelegatorFactory's constructor:

    // imports omittedpublic final class DelegatorFactory implements InvocationHandler {public DelegatorFactory(final Class[]ancestors) {// implementation omitted}// code omitted}

    There is more to DelegatorFactory as they shall soon see, but they now maintain enough to simulate multiple implementation inheritance. Going back to the question first posed, instead of:

    public class Employee extends Person, Employment {// detail omitted}

    followed (presumably) by:

    Employee employee = new Employee();

    We can instead write:

    Object employee =new DelgatorFactory(new Class[] {Person.class,Employee.class}).getObject();

    Although the syntax is rather different, the same essential information is being provided. That is, the concrete implementations are provided in Person and in Employment. This remonstrate will consume the implementation of Person if invoked as a PersonLike, and the implementation of Employment if invoked as an EmployeeLike:

    ((PersonLike)employee).getAge();((EmployableLike)employee).getHireDate();

    How ConvenientIn the above example, the casts are necessary because the getObject() manner of DelegatorFactory can only recrudesce a reference of sort java.lang.Object. But the clunkiness arises because their original aim of defining the Employee class with two concrete superclasses actually does something else as well:

    public class Employee extends Person, Employment {// detail omitted}

    Not only does this bespeak that the implementation of Employee should be based on that of its superclasses, it likewise defines Employee as a type. In other words, it's then practicable to write:

    Employee employee;

    What is missing in their dynamic proxy solution is this definition of type. Let's first achieve that in the habitual way. As shown in figure 2, they don't necessity to consume a class though; an interface is sufficient.

    As code, this is simply:

    public interface Employee extends PersonLike, EmployeeLike { }

    There is no detail omitted here; this is their complete definition. Note that Employee is now an interface and not a class. The following will not work, however:

    Employee employee =(Employee)new DelegatorFactory(new Class[] {Person.class,Employment.class}).getObject();

    This is because the only interfaces implemented by the dynamic proxy returned by getObject() are PersonLike and EmployableLike. No matter that logically the Employee interface does not require any additional implementation from their dynamically created object; Employee is not an interface that they can cast to. However, DelegatorFactory does provide an alternative constructor:

    Employee employee =(Employee)new DelegatorFactory(new Class[] {Person.class,Employment.class},Employee.class).getObject();

    Note the new second controversy (Employee.class) to the constructor. Casting the remonstrate returned from getObject() to Employee will now work. Behind the scenes, the Delegator- Factory simply adds this interface to the set of those to be implemented by the dynamic proxy. Note that Delegator Factory takes this interface remonstrate on trust: there is no validation that the interface doesn't introduce any new methods that are not already present in the interfaces of the superclasses.

    Initializing the SuperclassesIn "regular" Java, if a superclass does not provide a no-arg constructor, it's necessary for the subclass to correctly initialize the superclass using constructor chaining. Normally this is done by including the superclass's constructor's argument(s) in the subclass's constructor's argument(s), and then passing them up the class hierarchy using super().

    The facilities shown in Delegator-Factory thus far achieve not support this. The DelegatorFactory is given a list of superclasses, and then instantiates an instance of each (to delegate to) using java.lang.Class.newInstance(). This requires a public no-arg constructor to exist.

    If the would-be superclass does not proffer a public no-arg constructor, the DelegatorFactory should be instantiated using a different constructor that takes preinstantiated superclass instances:

    Person person = new Person("joe", 28);Employment employment =new Employment(someCalendar.getTime(),30000);Employee employee =(Employee)new DelegatorFactory(new Object[] {person, employment},Employee.class).getObject();

    If the would-be superclass does not maintain a public constructor, or is abstract, a custom subclass (probably an anonymous inner class) should be instantiated and used instead.

    Dealing with DiamondsTypically, multiple implementation inheritance is used when the superclasses maintain orthogonal concerns. Certainly this is the case with PersonLike and EmployeeLike, and each manner is unambiguous as to which progenitor it relates to.

    However, sometimes there may be a common super-interface in the interfaces implemented by the "superclasses." For example, suppose they maintain the concrete class, Car, which implements Driveable, the Boat class, which implements Sailable, and both Driveable and Sailable extend from Steerable. Since they want to consume both Car and Boat to define a new subclass, they will likewise introduce a convenience interface, AmphibiousCar (see figure 3).

    The steer() manner of Steerable is used to alter the presence (0 to 359 degrees) of the steerable object. The getBearing() method, of course, should recrudesce this bearing.

    For simplicity, the drive() manner of Driveable and the sail() manner of Sailable recrudesce a suitable string indicating the current bearing. Invoking drive() might recrudesce a string such as:

    driving at presence 30 degrees.

    From what they currently know, they would create an amphibious car remonstrate using:

    AmphibiousCar ac =(AmphibiousCar)new DelegatorFactory(Class[] {Car.class, Boat.class}).getObject();

    What happens if they invoke the steer() manner on their new amphibious car ac? Should the invocation handler delegate to the Car superclass remonstrate or the Boat? The default behavior is to delegate to the first matching object. Hence, they will get:

    ac.steer(30);System.out.println(ac.drive());// prints "driving at presence 30 degrees"System.out.println(ac.sail());// prints "sailing at presence 0 degrees"

    The Boat superclass component of their class never knew that the presence had changed.

    It's this benign of problem that persuaded the Java language designers to exclude multiple implementation inheritance. This is too great an zone to cover in this article, but what they maintain here is an example of share of the so-called "diamond" problem, where there is a common ancestor. You can observe the diamond in the interfaces: Steerable, Driveable, Sailable, and Amphibious-Car.

    The DelegatorFactory utility deals with the diamond problem by allowing you to specify the invocation behavior to the delegate superclasses as a pluggable strategy (an example of the Strategy pattern). The strategy is defined by the InvocationStrategy interface. The default strategy (InvokeFirstOnlyStrategy) is to invoke the first progenitor superclass that can ply the method. However, in the case of the diamond, what is required is that both ancestors necessity to ply the method. The InvokeAllStrategy handles this. If the manner being invoked has a nonvoid recrudesce type, the recrudesce value from the first progenitor is returned. The two strategies are shown in figure 4.

    The invocation strategy can either be set after the DelegatorFactory has been instantiated, or can be set through (yet another) overloaded constructor. Hence their amphibious car should be created using:

    AmphibiousCar ac =(AmphibiousCar)new DelegatorFactory(Class[] {Car.class, Boat.class},new InvokeAllStrategy()).getObject();

    This time, they get:

    ac.steer(30);System.out.println(ac.drive());// prints "driving at presence 30 degrees"System.out.println(ac.sail());// prints "sailing at presence 30 degrees"

    The InvokeFirstOnlyStrategy and InvokeAllStrategy are not the only strategies available (indeed they shall observe one more shortly); however, they should labor for most situations.

    If a custom invocation strategy is required, it can be written by implementing the InvocationStrategy interface:

    public interface InvocationStrategy {Object invoke(final List ancestors,final manner method,final Object[] args)throws Throwable}

    The ancestors parameter is an immutable list of the remonstrate instances representing the superclass. The manner parameter represents the manner being invoked, and the args parameter contains the arguments to that Method. A typical invocation strategy would likely convoke method.invoke(S) somewhere within its implementation, with the first controversy (the remonstrate upon which to invoke the method) being one of the ancestors.

    We shall hunt at some applications of custom invocation strategies shortly. For now, though, an adaptation of InvokeAllStrategy might be to recrudesce the tolerable recrudesce value of total ancestors, not just the recrudesce value of the first one.

    Implicit DiamondsIn the previous diamond example, the Steerable interface is explicitly a super-interface of both Driveable and Sailable. What if the super-interface has not been explicitly factored out, though?

    For example, in the original PersonLike and EmployeeLike example, what if each provided a foo() method, returning a string. Not imaginative, but never mind. Let's construct their employee and consume an InvokeAllStrategy:

    Employee employee = (Employee)new DelegatorFactory(new Class[]{Person.class, Employment.class},Employee.class,new InvokeAllStrategy()).getObject();

    Now let us invoke foo():

    employee.foo(); // what will happen?

    Should the Person's implementation be called, that of Employment, or both? Although you might wish that both would be called (by virtue of their installed strategy), the miserable verity is that only Person's implementation would be called. This is because the dynamic proxy has no course of knowing which interface to match foo() to, so it simply matches it to the first interface listed. (It's a java.lang.reflect.Method that is passed to the DelegatorFactory, not the string literal "foo()". Methods are associated with a specific declaring class/interface.) In terms of the DelegatorFactory's implementation, this means the first superclass listed in its constructor.

    Note likewise that the compile time sort does not matter. Neither of the following will change the outcome:

    ((PersonLike)employee).foo(); ((EmployeeLike)employee).foo();

    In fact, it would be practicable to modify DelegatorFactory to manufacture Invoke-AllStrategy effective in this case, but that would involve parsing on the Method.getName() rather than the method. However, this has deliberately not been done. We'd rather you factored out the super-interface and made the diamond explicit. In the above example, add a FooLike (or Fooable) interface and manufacture both PersonLike and EmployLike extend from it.

    Other ApplicationsThe issue raised by diamonds (implicit or otherwise) is that of how to deal with more than one implementation of a given manner within an interface. However, it's enchanting to turn this on its head.

    In aircraft and other safety-critical environments, it's common to implement subsystems in triplicate. For example, there may be three different navigational systems, possibly with each implemented by different subcontractors. Each of these would be able to respond to the request, "Where is the location of the aircraft?"

    Other systems within the aircraft interact with the navigational subsystem through a broker. This accepts the request on behalf of the navigational subsystem, and then forwards the request onto each implementation. Assuming there are no bugs in any of those implementations, they should total respond with the same data (within some delta of acceptable variance).

    If there is a bug in one of the implementations, it may submit a response that differs wildly from the other two implementations. In this case, the broker disregards that response completely and uses the responses of the other implementations that harmonize with each other.

    The design of DelegatorFactory and its pluggable invocation strategies manufacture it light to implement such a broker. Imagine a Calculator interface that defines a separate manner add(int, int):int. They can then maintain three implementations of this interface, as shown in figure 5.

    The FastCalculator uses regular integer arithmetic. The OneByOne- Calculator rather long-windedly performs its arithmetic by incrementing the first operand one-by-one in a loop. Both of these implementations are correct, just different. The final BrokenCalculator is just that; it actually performs a subtraction, not an addition.

    The InvokeSafelyStrategy invocation strategy requires at least three ancestors that implement each manner invoked. It will invoke the manner on total ancestors, and then hunt to observe that there is precisely one response that is most popular. Here is how to create a safe calculator that will ignore the incorrect implementation within the BrokenCalculator:

    DelegatorFactory dfInvokeSafely =new DelegatorFactory(new Class[] {BrokenCalculator.class,OneByOneCalculator.class,FastCalculator.class},Calculator.class,new InvokeSafelyStrategy());Calculator safeCalculator =(Calculator)dfInvokeSafely.getObject();assertEquals(7, safeCalculator.add(3,4));

    Note that the InvokeSafelyStrategy is not total that intelligent. It stores the recrudesce values from each progenitor within a HashSet, so it relies on an accurate implementation of equals() and hashCode(). If the actual recrudesce sort were a float (wrapped within a Float object), a more sophisticated invocation strategy would most likely be required. In general, this strategy will labor only with well-defined value objects that can intrinsically deal with any rounding and other such errors.

    You could easily accommodate or refine the InvokeSafelyStrategy into further strategies. For example:

  • A parameterized version of InvokeSafelyStrategy could be used to deal with floats and other recrudesce types that would maintain rounding issues.
  • A background strategy might accomplish each invocation within a divide thread. Any invocation that had not responded within a inevitable timeout would be discarded.
  • A high-performance system, on the other hand, might consume a strategy that again uses a backgrounding strategy but returns the result of the first one to finish, killing off the rest.
  • A logging strategy might accomplish some logging and then forward the invocation (typically to a separate delegate).
  • A caching strategy would check its cache with respect to the input parameter, and only if the result is unknown would it invoke the delegate (caching the subsequent result).
  • A listener/broadcast strategy could portray a collection of listener objects; notifying total listeners of an event would require notifying only the broadcaster, which would then iterate over total listener objects as required.

    Moreover, there is nothing to preclude multiple invocations from being chained together, (that is, the Decorator pattern). Alternatively, they could imagine a composite strategy (the Composite pattern) that combines a set of strategies together. Either the invocation chain (decorator) or the set of leaf strategies (composite) could be changed at runtime, import that they can change the behavior and responsibilities of the remonstrate dynamically. This is a fundamentally different paradigm from conventional Java with its static typing. Normally, it's the type/class of the remonstrate that determines its behavior, something that cannot be changed once the remonstrate is instantiated. Here, though, they maintain ended up configuring the behavior of objects on an instance-by-instance basis: so-called instance-based programming. In effect, the whole notion of sort becomes much less important.

    There are echoes here too of aspect-oriented programming. Most aspect-oriented programming uses compile-time techniques (the term used is "weaving") to add in behavior to classes. The classic example of aspect-oriented programming is to add logging within total manner calls. You can easily see, though, that these same features can be incorporated dynamically using invocation strategies; the decorator/composite invocation strategies would allow an whimsical set of aspects to be added to a class. The dissimilarity though is that now the aspects are applied at runtime (and hence can be changed without recompile and redeployment).

    ConclusionThe DelegatorFactory is simple to use, supporting classic mix-in (orthogonal) multiple-implementation inheritance "out-of-the-box" and - with its pluggable invocation strategy design - allows diamond hierarchies to be easily supported. Moreover, the design likewise lends itself to other quite unrelated problem spaces; for example, creating safe systems was explored. Taken to its ratiocinative conclusion, the approach supports both instance-based programming and aspect-oriented programming.

    Of course, what makes DelegatorFactory labor is Java's support for dynamic proxies, and that in turn requires that the progenitor superclasses implement interfaces. This approach won't labor for class-based designs (JDOM is an example that comes to mind). But arguably class-based designs should be used only for value objects that should be final anyway. Those situations where multiple inheritance is desired are more likely to occur when working with reference objects.

    One particular case deliberately not supported by DelegatorFactory is when there is a so-called implicit diamond. The solution though is to draw out the methods that loom in both interfaces, and poke them into a new super-interface. Then, manufacture certain you consume InvokeAllStrategy rather than the default InvokeFirstOnlyStrategy.

    Of course, using a dynamic proxy remonstrate will be slower than a hand-crafted solution, principally because reflection is used. However, the dissimilarity may not be noticeable in practice. In recent releases of Java, Sun has reserve much pains in speeding up reflective invocation; as of JDK 1.4.1, it may well be that regular invocation is only twice as speedily as reflective invocation (previously this figure was something enjoy 40 times faster).

    Using DelegatorFactoryThe DelegatorFactory utility class and supporting classes described here can be downloaded from www.sys-con.com/java/sourcec.cfm, and are compilable using Ant (v1.5.1 was used to create the build file). A JUnit-based test harness is likewise provided; JUnit v3.8.1 is required. The motivating examples in this article are based on the JUnit tests, so they should be light enough to follow.

    To rush the tests with JUnit's text-based test runner, use:

    ant test

    Alternatively, you can consume JUnit's test runner by running directly:

    ant rebuildjava -classpathdist/halware-util-dynamic-bin.jar;dist/halware-util-dynamic-bin-test.jarcom.halware.util.dynamic.test.AllTests gui

    (The GUI test runner is not the default since JUnit's classloaders achieve not understand the Class-Path manifest attribute.)

    I hope you find DelegatorFactory useful. It has been distributed under the GNU Lesser Public License, so you are free to embed it within your own software as required.

    AcknowledgmentsThe inspiration for this article came from a session presented by Benedict Heal at the remonstrate Technology Conference OT2002, rush by the British Computer Society and the IEE. observe www.ot2002.org/programme.html. Thanks, Benedict, for your further review comments on the draft of this article.

    The UML class diagrams were created directly from the Java source code using Together ControlCenter, observe www.borland.com.



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