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Cryptography & Theory 2: What is Pseudorandom

As was concluded in the first part of this series, security without randomness is impossible. Deterministic ciphers are unable to protect against strong attackers and true random generators ...
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This is Stuff: Cryptography & Theory 1: Meaning of Secure

Cryptography & Theory is series of blog posts on things I learned in coursera stanford online crypto class. The class contained just right mixture of theory, math and programming ...
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ANTLR – Semantic Predicates

Parsing simple grammar with antlr is simple. All you have to do is to use regular expressions to describe your language and let antlr generate lexer and parser. Parsing big or complicated ...
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Writing Eclipse Plugins Tutorial – Part 1

Eclipse is one of three most popular java development IDEs. One reason for its success is its extensibility. Writing eclipse plugins can be very fast and easy for anyone who knows what ...
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Apache Shiro Part 3 – Cryptography

Besides securing web pages and managing access rights Apache Shiro does also basic cryptography tasks. The framework is able to:encrypt and decrypt data, hash data, generate ...
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Apache Shiro Part 2 – Realms, Database and PGP Certificates

This is second part of series dedicated to Apache Shiro. We started previous part with simple unsecured web application. When we finished, the application had basic authentication ...
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Apache Shiro Part 1 – Basics

Apache Shiro, originally called JSecurity, is Java security framework. It was accepted and became Apache top level project in 2010. It aims to be powerful and easy to be used. The ...
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MapReduce Questions and Answers Part 2

4 Inverting Indexing for Text Retrieval The chapter contains a lot of details about integer numbers encoding and compression. Since these topics are not directly about MapReduce, ...
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MapReduce Questions and Answers Part 1

With all the hype and buzz surrounding NoSQL, I decided to have a look at it. I quickly found that there is not one NoSQL I could learn. Rather, there are various different solutions ...
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AppSensor – Intrusion Detection

Imagine that you have created a nice web application and secured it to your best. Users came, used it and everything was OK until someone stumbled upon vulnerability in your application ...
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