AI;DR - The security review described here was done by Claude Code with the Fable model, and the resulting changes and this blog post were developed with significant help from it. If you don't want to read "AI slop", stop reading now. TxtCipher is a small web page that encrypts and decrypts text with a … Continue reading TxtCipher code review: RC4 keystream reuse and a versioned AES format
Category: TxtCipher
TxtCipher now supports AES-256-GCM
TxtCipher started as a small web-based replacement for TxtCrypt, a macOS (and previously also Android) tool that encrypts short pieces of text with RC4 and Base64. RC4 is well past its prime by modern standards, but it was good enough for the original use case: Encrypt a password or PIN in Denkzettel which is unlikely … Continue reading TxtCipher now supports AES-256-GCM