Java Cryptography Extensions: Practical Guide for by Jason R. Weiss

By Jason R. Weiss

For a very long time, there was a necessity for a pragmatic, down-to-earth builders ebook for the Java Cryptography Extension. i'm more than happy to determine there's now a publication that may solution the various technical questions that builders, managers, and researchers have approximately this type of serious subject. i'm yes that this booklet will give a contribution tremendously to the good fortune of securing Java purposes and deployments for e-business. --Anthony Nadalin, Java safeguard Lead Architect, IBM

For many Java builders and software program engineers, cryptography is an "on-demand" programming workout, the place cryptographic innovations are shelved till the subsequent undertaking calls for renewed concentration. yet issues for cryptography needs to be made early on within the layout method and it’s primary that builders recognize what different types of recommendations exist.

One of Java’s recommendations to aid bridge the space among educational study and real-world challenge fixing is available in the shape of a well-defined structure for enforcing cryptographic suggestions. in spite of the fact that, to take advantage of the structure and its extensions, it is very important realize the professionals and cons of alternative cryptographic algorithms and to understand tips on how to enforce quite a few units like key agreements, electronic signatures, and message digests, to call a few.

In Java Cryptography Extensions (JCE), cryptography is mentioned on the point that builders want to know to paintings with the JCE and with their very own functions yet that doesn’t weigh down by way of packing in info unimportant to the busy expert. The JCE is explored utilizing a number of code examples and tutorial aspect, with basically provided sections on each one point of the Java library. a web open-source cryptography toolkit and the code for all the examples extra reinforces the techniques coated in the booklet. No different source provides so concisely or successfully the precise fabric had to commence using the JCE.

  • Written by way of a professional veteran of either cryptography and server-side programming
  • Covers the structure of the JCE, symmetric ciphers, uneven ciphers, message digests, message authentication codes, electronic signatures, and handling keys and certificates

Show description

Read or Download Java Cryptography Extensions: Practical Guide for Programmers (The Practical Guides) PDF

Best cryptography books

Introduction to Cryptography

A result of fast progress of electronic communique and digital facts alternate, details defense has turn into a vital factor in undefined, company, and management. sleek cryptography presents crucial strategies for securing details and keeping info. within the first half, this e-book covers the main suggestions of cryptography on an undergraduate point, from encryption and electronic signatures to cryptographic protocols.

Public Key Cryptography – PKC 2004: 7th International Workshop on Theory and Practice in Public Key Cryptography, Singapore, March 1-4, 2004. Proceedings

This publication constitutes the refereed complaints of the seventh overseas Workshop on conception and perform in Public Key Cryptography, PKC 2004, held in Singapore in March 2004. The 32 revised complete papers awarded have been conscientiously reviewed and chosen from 106 submissions. All present concerns in public key cryptography are addressed starting from theoretical and mathematical foundations to a huge number of public key cryptosystems.

The Mathematics of Coding Theory, 1st Edition

This e-book makes a truly obtainable advent to a crucial modern software of quantity concept, summary algebra, and likelihood. It includes a number of computational examples all through, giving inexperienced persons the chance to use, perform, and money their figuring out of key recommendations. KEY issues insurance begins from scratch in treating likelihood, entropy, compression, Shannon¿s theorems, cyclic redundancy assessments, and error-correction.

Extra info for Java Cryptography Extensions: Practical Guide for Programmers (The Practical Guides)

Sample text

6 JCA Helper Classes 2 while(iter, hasNext ()) { } System. out. println(iter, next (). toString () ) ; This small code sample produces algorithm names that can be effectively used in an opaque provider strategy. Nothing about the provider that implements the algorithm is revealed--the algorithm essentially remains a black box. This code sample also d e m o n s t r a t e s the use of the Security class to dynamically register new JCE providers. Running the code with the dynamic registration c o m m e n t e d out should reveal a small list similar to this for the S i g n a t u r e engine: MD2WITHRSA SHAIWITHRSA SHAIWITHDSA MDSWITHRSA Now, if we u n c o m m e n t the two lines of code that dynamically register the Cryptix provider, we should see a much larger list of algorithms that the S i g n a t u r e engine supports.

Running the code with the dynamic registration c o m m e n t e d out should reveal a small list similar to this for the S i g n a t u r e engine: MD2WITHRSA SHAIWITHRSA SHAIWITHDSA MDSWITHRSA Now, if we u n c o m m e n t the two lines of code that dynamically register the Cryptix provider, we should see a much larger list of algorithms that the S i g n a t u r e engine supports. MD2WITHRSA RIPEMDI28WITHRSA SHA/DSA SHA- 384/RSA/PKCS#1 SHAIWITHRSA SHAIWITHDSA RSASSA-PSS/SHA-I RSASSA-PSS/SHA- 512 RSASSA-PSS/SHA- 384 RSASSA-PSS/SHA-256 RIPEMDI60WITHRSA SHA-256/RSA/PKCS#1 MD5WITHRSA SHA- 512/RSA/PKCS#1 24 Chapter 1" Understanding Java's Cryptographic Architecture 9 RAWDSA ~)4WITHRSA The other technique for locating the nomenclature of the installed algorithms is via the Provider class.

The KeyGenerator engine encapsulates these concepts for us, ultimately creating a data-rich symmetric secret key of appropriate size that contains sufficient initialization data for the named cipher algorithm. The KeyGenerator engine follows the original design goals of the JCA, providing algorithm independent or algorithm specific secret key generation. It does this through a set of overloaded i n i t ( ) methods. You are not required to invoke any of these initialization routines. Instead, you may defer to an algorithm independent initialization based on what the provider deems appropriate, that is, a provider defined default key size generated through a provider defined default source of randomness.

Download PDF sample

Rated 4.19 of 5 – based on 43 votes