By David Hook
Whereas cryptography can nonetheless be a debatable subject within the programming neighborhood, Java has weathered that hurricane and gives a wealthy set of APIs that permit you, the developer, to successfully comprise cryptography in applications-if you recognize how.
This ebook teaches you the way. Chapters one via 5 hide the structure of the JCE and JCA, symmetric and uneven key encryption in Java, message authentication codes, and the way to create Java implementations with the API supplied by means of the Bouncy fortress ASN.1 programs, all with lots of examples. construction on that origin, the second one 1/2 the ebook takes you into higher-level themes, permitting you to create and enforce safe Java purposes and utilize usual protocols corresponding to CMS, SSL, and S/MIME.
What you are going to study from this e-book tips on how to comprehend and use JCE, JCA, and the JSSE for encryption and authentication The ways that padding mechanisms paintings in ciphers and the way to identify and attach normal error An knowing of ways authentication mechanisms are carried out in Java and why they're used tools for describing cryptographic gadgets with ASN.1 tips on how to create certificates revocation lists and use the net certificates prestige Protocol (OCSP) Real-world net ideas utilizing Bouncy fort APIs
Who this e-book is for
This publication is for Java builders who are looking to use cryptography of their purposes or to appreciate how cryptography is getting used in Java functions. wisdom of the Java language is critical, yet you needn't be acquainted with any of the APIs discussed.
Wrox starting guides are crafted to make studying programming languages and applied sciences more uncomplicated than you're thinking that, supplying a established, educational structure that might advisor you thru the entire options concerned.
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Additional resources for Beginning Cryptography with Java
Qxd 7/6/05 2:04 PM Page 20 Chapter 2 However if you do, it is purely up to the provider you are using as to which mode and padding will be used in the Cipher object that has been returned. It is advised against doing this in the interests of allowing your code to be portable between providers. Specify exactly what you need and you should be spared unnecessary surprises. getInstance() at a minimum, you then have to initialize it with the type of operation it is to be used for and with the key that is to be used.
GetProvider() to retrieve it. Of course, if there is no match for the simple name BC and a null is returned, it means the provider has not been installed correctly. getProviders() method. Installing During Execution A provider can also be added during the execution of your program. Security using the addProvider() method. addProvider(new BouncyCastleProvider()); This line must be added before the provider is referred to in your program. getProvider(). The examples in the book and on the book Web site assume you have installed the Bouncy Castle provider by configuring the JRE.
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