Cryptography
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Core Java
Understanding Java SecureRandom Algorithms on Linux
High-quality random numbers are essential for cryptography, secure key generation, and other security-sensitive applications. Standard pseudo-random number generators (PRNGs) produce…
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Core Java
Java 21 Key Encapsulation Mechanism (KEM) API
Secure communication relies on exchanging cryptographic keys safely over untrusted networks. Until Java 21, implementing this in Java required combining…
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Core Java
Electronic Signature Using The WebCrypto API
Sometimes we need to let users sign something electronically. Often people understand that as placing your handwritten signature on the…
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Software Development
Don’t just randomize, truly randomize!
The state of web application cryptography has changed, and each development language provides its own way of working with it.…
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Core Java
Getting A List of Available Cryptographic Algorithms
How do you learn what cryptographic algorithms are available to you? The Java spec names several required ciphers, digests, etc.,…
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Software Development
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…
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Software Development
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…
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Core Java
How to use ECC with OpenJDK
Everyone who ever tried to use Elliptic Curve Cryptography (ECC) in Java with an OpenJDK was either forced to use…
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Core Java
Creating Password-Based Encryption Keys
This article discusses creating password-based encryption PBE keys. First a reminder of earlier points – as a rule you should,…
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