May 2001
Intermediate to advanced
1088 pages
30h 13m
English
Content preview from Special Edition Using Java™ 2 Enterprise EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Digitally Signing Data
Now that you know how to digitally sign data, you'll be happy to know that the Signature class in the java.security package takes care of most of the work for you. You don't have to go through the trouble of computing the message digest or encrypting it. You just create a Signature object, feed it a public or private key along with the data, and ask it either to sign the data or verify a signature.
There are a few combinations of message digests and encryption algorithms you can use. First, there are two types of public key encryption you can use: DSA (Digital Signature Algorithm) or good old RSA. There are three message digest algorithms available with the JDK: MD2 (Message Digest version 2), MD5 (Message Digest version ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.