AndroidCryptoDemystify the Secure Dynamic Message with NTAG 424 DNA NFC tags (Android/Java) Part 2This article will help you in understanding the “mysterious” Secure Dynamic Message (“SDM”) or Secure Unique Number (“SUN”) feature…19 min read·2 days ago----
AndroidCryptoDemystify the Secure Dynamic Message with NTAG 424 DNA NFC tags (Android/Java) Part 1This article will help you in understanding the “mysterious” Secure Dynamic Message (“SDM”) or Secure Unique Number (“SUN”) feature…12 min read·2 days ago----
AndroidCryptoMifare DESFire EVx NFC tag: Change the Master Application Key from DES to AES (Android/Java)This article shows you how to change the Master Application Key on a Mifare DESFire NFC tag from DES key type to AES key type. This will be…4 min read·2 days ago----
AndroidCryptoDesign an Access Control System based on Mifare DESFire EV3 NFC-tagsAn Access Control System is mandatory for each company or authority building. In former times the access was based on keys that were issued…11 min read·Mar 19, 2024----
AndroidCryptoMifare DESFire EV3 — a beginner tutorial (Android Java) using the DESFire for Android tools.Some days ago I was asked if there are tutorials available that show how to work with a Mifare DESFire NFC card *), but there is nothing…13 min read·Feb 18, 2024----
AndroidCryptoFinish the setup of a Firebase project for an Android app tutorial (step by step)This tutorial is about finishing the set up the of a Firebase project for an Android app, but not for a product like “Authentication” or…4 min read·Dec 24, 2023----
AndroidCryptoSetup of Firebase Storage tutorial (step by step)The Firebase environment needs a setup for each product, and in this article I’m setting up the Firebase Storage product. It is part 5 of…4 min read·Dec 24, 2023----
AndroidCryptoSetup of a Cloud Firestore Database tutorial (step by step)The Firebase environment needs a setup for each product, and in this article I’m setting up the Cloud Firestore Database product. It is…5 min read·Dec 24, 2023----
AndroidCryptoSetup of a Firebase Realtime Database tutorial (step by step)The Firebase environment needs a setup for each product, and in this article I’m setting up the Realtime Database product. It is part 3 of…5 min read·Dec 24, 2023----
AndroidCryptoSetup of Firebase Authentication tutorial (step by step)The Firebase environment needs a setup for each product, and in this article I’m setting up the Authentication product. It is part 2 of an…4 min read·Dec 24, 2023----