Steve Gordon • 1/14/2026

Encrypting Properties with System.Text.Json and a TypeInfoResolver Modifier (Part 1)

This article is the first part of a series on building a system to automatically encrypt and decrypt specific properties during JSON serialization/deserialization using System.Text.Json. It covers scenarios like securing data in document databases and enabling crypto shredding for compliance, with a practical example of securing OAuth tokens. The post details using a custom attribute and an IJsonTypeInfoResolver to mark and handle sensitive properties.

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#Data Protection #JSON Serialization #Encryption