Articles

This was originally posted as the accepted answer to the question “Where can I find official test vectors for NIST SP 800-56C r1 Single Step KDF” on crypto.stackexchange.com.

If you can’t use authenticated encryption like AES+GCM, this article will show how and why to use AES+CBC with Ecrypt-then-Mac with HMAC.

While writing my own bcrypt library, I discovered a lot of odd things surrounding the bcrypt protocol.

This was originally posted as an answer to the question “Initial bytes incorrect after Java AES/CBC decryption” on stackoverflow.com.

WeAreDevelopers 2018 delivered an impressively large, celebrity-packed developer convention in Vienna, but for me the scale made it feel impersonal and the content often too surface-level to justify returning.

A convenient pattern to always use interfaces where possible but to keep the code-footprint and complexity of relations small

In this article I will show you how to strengthen ProGuard’s name obfuscation, making it harder for an attacker the reverse engineer your…

When starting a new project, all the Proguard configuration goes into that single proguard-rules.pro file. This is fine for the beginning…

In this article I will show you how we adapted our logging strategy to a massively grown project structure. In the first part I will go…

What to consider when encrypting your data and how to correctly implement it with AES-GCM.

This was originally posted as an answer to the question “Bit shift operations on a byte array in Java” on stackoverflow.com.

This was originally posted as an answer to the question “Android: How to programmatically access the device serial number shown in the AVD manager (API Version 8)” on stackoverflow.com.

Droidcon London 2017 combined high-quality Android engineering talks with a fun and community-driven atmosphere, making it one of the most enjoyable Android conferences in Europe.

This was originally posted as an answer to the question “Is HKDF implemented in Java Cryptography Architecture?” on stackoverflow.com.

This was originally posted as an answer to the question “Android Studio 3.0 Error. Migrate dependency configurations for local modules” on stackoverflow.com.